[chronojump/michrolab: 47/57] Included the library for SD




commit 614a1d58b9388692f06bd7012dc2527daea6c0e0
Author: Xavier Padullés <testing chronojump org>
Date:   Sat May 21 12:07:11 2022 +0200

    Included the library for SD

 arduino/ForceSensorTFT/libraries/SD/README.adoc    |   26 +
 .../libraries/SD/examples/CardInfo/CardInfo.ino    |  116 ++
 .../SD/examples/Datalogger/Datalogger.ino          |   84 ++
 .../libraries/SD/examples/DumpFile/DumpFile.ino    |   65 +
 .../libraries/SD/examples/Files/Files.ino          |   75 +
 .../examples/NonBlockingWrite/NonBlockingWrite.ino |   91 ++
 .../libraries/SD/examples/ReadWrite/ReadWrite.ino  |   79 +
 .../libraries/SD/examples/listfiles/listfiles.ino  |   80 +
 .../SD/extras/codespell-ignore-words-list.txt      |    0
 arduino/ForceSensorTFT/libraries/SD/keywords.txt   |   31 +
 .../ForceSensorTFT/libraries/SD/library.properties |    9 +
 arduino/ForceSensorTFT/libraries/SD/src/File.cpp   |  168 +++
 arduino/ForceSensorTFT/libraries/SD/src/README.txt |   13 +
 arduino/ForceSensorTFT/libraries/SD/src/SD.cpp     |  637 ++++++++
 arduino/ForceSensorTFT/libraries/SD/src/SD.h       |  138 ++
 .../libraries/SD/src/utility/FatStructs.h          |  418 ++++++
 .../libraries/SD/src/utility/Sd2Card.cpp           |  777 ++++++++++
 .../libraries/SD/src/utility/Sd2Card.h             |  273 ++++
 .../libraries/SD/src/utility/Sd2PinMap.h           |  525 +++++++
 .../libraries/SD/src/utility/SdFat.h               |  641 ++++++++
 .../libraries/SD/src/utility/SdFatUtil.h           |   77 +
 .../libraries/SD/src/utility/SdFatmainpage.h       |  202 +++
 .../libraries/SD/src/utility/SdFile.cpp            | 1527 ++++++++++++++++++++
 .../libraries/SD/src/utility/SdInfo.h              |  232 +++
 .../libraries/SD/src/utility/SdVolume.cpp          |  351 +++++
 25 files changed, 6635 insertions(+)
---
diff --git a/arduino/ForceSensorTFT/libraries/SD/README.adoc b/arduino/ForceSensorTFT/libraries/SD/README.adoc
new file mode 100644
index 000000000..fb3ed030c
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/README.adoc
@@ -0,0 +1,26 @@
+= SD Library for Arduino =
+
+image:https://travis-ci.org/arduino-libraries/SD.svg?branch=master[Build Status, 
link=https://travis-ci.org/arduino-libraries/SD]
+
+The SD library allows for reading from and writing to SD cards.
+
+For more information about this library please visit us at
+http://www.arduino.cc/en/Reference/SD
+
+== License ==
+
+ Copyright (C) 2009 by William Greiman
+Copyright (c) 2010 SparkFun Electronics
+
+This program is free software: you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation, either version 3 of the License, or
+(at your option) any later version.
+
+This program is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with this program.  If not, see <http://www.gnu.org/licenses/>.
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/CardInfo/CardInfo.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/CardInfo/CardInfo.ino
new file mode 100644
index 000000000..97913efde
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/CardInfo/CardInfo.ino
@@ -0,0 +1,116 @@
+/*
+  SD card test
+
+  This example shows how use the utility libraries on which the'
+  SD library is based in order to get info about your SD card.
+  Very useful for testing a card when you're not sure whether its working or not.
+
+  The circuit:
+    SD card attached to SPI bus as follows:
+ ** MOSI - pin 11 on Arduino Uno/Duemilanove/Diecimila
+ ** MISO - pin 12 on Arduino Uno/Duemilanove/Diecimila
+ ** CLK - pin 13 on Arduino Uno/Duemilanove/Diecimila
+ ** CS - depends on your SD card shield or module.
+               Pin 4 used here for consistency with other Arduino examples
+
+
+  created  28 Mar 2011
+  by Limor Fried
+  modified 9 Apr 2012
+  by Tom Igoe
+*/
+// include the SD library:
+#include <SPI.h>
+#include <SD.h>
+
+// set up variables using the SD utility library functions:
+Sd2Card card;
+SdVolume volume;
+SdFile root;
+
+// change this to match your SD shield or module;
+// Arduino Ethernet shield: pin 4
+// Adafruit SD shields and modules: pin 10
+// Sparkfun SD shield: pin 8
+// MKRZero SD: SDCARD_SS_PIN
+const int chipSelect = 4;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+
+  Serial.print("\nInitializing SD card...");
+
+  // we'll use the initialization code from the utility libraries
+  // since we're just testing if the card is working!
+  if (!card.init(SPI_HALF_SPEED, chipSelect)) {
+    Serial.println("initialization failed. Things to check:");
+    Serial.println("* is a card inserted?");
+    Serial.println("* is your wiring correct?");
+    Serial.println("* did you change the chipSelect pin to match your shield or module?");
+    while (1);
+  } else {
+    Serial.println("Wiring is correct and a card is present.");
+  }
+
+  // print the type of card
+  Serial.println();
+  Serial.print("Card type:         ");
+  switch (card.type()) {
+    case SD_CARD_TYPE_SD1:
+      Serial.println("SD1");
+      break;
+    case SD_CARD_TYPE_SD2:
+      Serial.println("SD2");
+      break;
+    case SD_CARD_TYPE_SDHC:
+      Serial.println("SDHC");
+      break;
+    default:
+      Serial.println("Unknown");
+  }
+
+  // Now we will try to open the 'volume'/'partition' - it should be FAT16 or FAT32
+  if (!volume.init(card)) {
+    Serial.println("Could not find FAT16/FAT32 partition.\nMake sure you've formatted the card");
+    while (1);
+  }
+
+  Serial.print("Clusters:          ");
+  Serial.println(volume.clusterCount());
+  Serial.print("Blocks x Cluster:  ");
+  Serial.println(volume.blocksPerCluster());
+
+  Serial.print("Total Blocks:      ");
+  Serial.println(volume.blocksPerCluster() * volume.clusterCount());
+  Serial.println();
+
+  // print the type and size of the first FAT-type volume
+  uint32_t volumesize;
+  Serial.print("Volume type is:    FAT");
+  Serial.println(volume.fatType(), DEC);
+
+  volumesize = volume.blocksPerCluster();    // clusters are collections of blocks
+  volumesize *= volume.clusterCount();       // we'll have a lot of clusters
+  volumesize /= 2;                           // SD card blocks are always 512 bytes (2 blocks are 1KB)
+  Serial.print("Volume size (Kb):  ");
+  Serial.println(volumesize);
+  Serial.print("Volume size (Mb):  ");
+  volumesize /= 1024;
+  Serial.println(volumesize);
+  Serial.print("Volume size (Gb):  ");
+  Serial.println((float)volumesize / 1024.0);
+
+  Serial.println("\nFiles found on the card (name, date and size in bytes): ");
+  root.openRoot(volume);
+
+  // list all files in the card with date and size
+  root.ls(LS_R | LS_DATE | LS_SIZE);
+}
+
+void loop(void) {
+}
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/Datalogger/Datalogger.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/Datalogger/Datalogger.ino
new file mode 100644
index 000000000..c2631c0a4
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/Datalogger/Datalogger.ino
@@ -0,0 +1,84 @@
+/*
+  SD card datalogger
+
+  This example shows how to log data from three analog sensors
+  to an SD card using the SD library.
+
+  The circuit:
+   analog sensors on analog ins 0, 1, and 2
+   SD card attached to SPI bus as follows:
+ ** MOSI - pin 11
+ ** MISO - pin 12
+ ** CLK - pin 13
+ ** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
+
+  created  24 Nov 2010
+  modified 9 Apr 2012
+  by Tom Igoe
+
+  This example code is in the public domain.
+
+*/
+
+#include <SPI.h>
+#include <SD.h>
+
+const int chipSelect = 4;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+
+  Serial.print("Initializing SD card...");
+
+  // see if the card is present and can be initialized:
+  if (!SD.begin(chipSelect)) {
+    Serial.println("Card failed, or not present");
+    // don't do anything more:
+    while (1);
+  }
+  Serial.println("card initialized.");
+}
+
+void loop() {
+  // make a string for assembling the data to log:
+  String dataString = "";
+
+  // read three sensors and append to the string:
+  for (int analogPin = 0; analogPin < 3; analogPin++) {
+    int sensor = analogRead(analogPin);
+    dataString += String(sensor);
+    if (analogPin < 2) {
+      dataString += ",";
+    }
+  }
+
+  // open the file. note that only one file can be open at a time,
+  // so you have to close this one before opening another.
+  File dataFile = SD.open("datalog.txt", FILE_WRITE);
+
+  // if the file is available, write to it:
+  if (dataFile) {
+    dataFile.println(dataString);
+    dataFile.close();
+    // print to the serial port too:
+    Serial.println(dataString);
+  }
+  // if the file isn't open, pop up an error:
+  else {
+    Serial.println("error opening datalog.txt");
+  }
+}
+
+
+
+
+
+
+
+
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/DumpFile/DumpFile.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/DumpFile/DumpFile.ino
new file mode 100644
index 000000000..74919991c
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/DumpFile/DumpFile.ino
@@ -0,0 +1,65 @@
+/*
+  SD card file dump
+
+  This example shows how to read a file from the SD card using the
+  SD library and send it over the serial port.
+
+  The circuit:
+   SD card attached to SPI bus as follows:
+ ** MOSI - pin 11
+ ** MISO - pin 12
+ ** CLK - pin 13
+ ** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
+
+  created  22 December 2010
+  by Limor Fried
+  modified 9 Apr 2012
+  by Tom Igoe
+
+  This example code is in the public domain.
+
+*/
+
+#include <SPI.h>
+#include <SD.h>
+
+const int chipSelect = 4;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+
+  Serial.print("Initializing SD card...");
+
+  // see if the card is present and can be initialized:
+  if (!SD.begin(chipSelect)) {
+    Serial.println("Card failed, or not present");
+    // don't do anything more:
+    while (1);
+  }
+  Serial.println("card initialized.");
+
+  // open the file. note that only one file can be open at a time,
+  // so you have to close this one before opening another.
+  File dataFile = SD.open("datalog.txt");
+
+  // if the file is available, write to it:
+  if (dataFile) {
+    while (dataFile.available()) {
+      Serial.write(dataFile.read());
+    }
+    dataFile.close();
+  }
+  // if the file isn't open, pop up an error:
+  else {
+    Serial.println("error opening datalog.txt");
+  }
+}
+
+void loop() {
+}
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/Files/Files.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/Files/Files.ino
new file mode 100644
index 000000000..cabebba51
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/Files/Files.ino
@@ -0,0 +1,75 @@
+/*
+  SD card basic file example
+
+  This example shows how to create and destroy an SD card file
+  The circuit:
+   SD card attached to SPI bus as follows:
+ ** MOSI - pin 11
+ ** MISO - pin 12
+ ** CLK - pin 13
+ ** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
+
+  created   Nov 2010
+  by David A. Mellis
+  modified 9 Apr 2012
+  by Tom Igoe
+
+  This example code is in the public domain.
+
+*/
+#include <SPI.h>
+#include <SD.h>
+
+File myFile;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+
+  Serial.print("Initializing SD card...");
+
+  if (!SD.begin(4)) {
+    Serial.println("initialization failed!");
+    while (1);
+  }
+  Serial.println("initialization done.");
+
+  if (SD.exists("example.txt")) {
+    Serial.println("example.txt exists.");
+  } else {
+    Serial.println("example.txt doesn't exist.");
+  }
+
+  // open a new file and immediately close it:
+  Serial.println("Creating example.txt...");
+  myFile = SD.open("example.txt", FILE_WRITE);
+  myFile.close();
+
+  // Check to see if the file exists:
+  if (SD.exists("example.txt")) {
+    Serial.println("example.txt exists.");
+  } else {
+    Serial.println("example.txt doesn't exist.");
+  }
+
+  // delete the file:
+  Serial.println("Removing example.txt...");
+  SD.remove("example.txt");
+
+  if (SD.exists("example.txt")) {
+    Serial.println("example.txt exists.");
+  } else {
+    Serial.println("example.txt doesn't exist.");
+  }
+}
+
+void loop() {
+  // nothing happens after setup finishes.
+}
+
+
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/NonBlockingWrite/NonBlockingWrite.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/NonBlockingWrite/NonBlockingWrite.ino
new file mode 100644
index 000000000..29d8ec66d
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/NonBlockingWrite/NonBlockingWrite.ino
@@ -0,0 +1,91 @@
+/*
+  Non-blocking Write
+
+  This example demonstrates how to perform non-blocking writes
+  to a file on a SD card. The file will contain the current millis()
+  value every 10ms. If the SD card is busy, the data will be buffered
+  in order to not block the sketch.
+
+  NOTE: myFile.availableForWrite() will automatically sync the
+        file contents as needed. You may lose some unsynced data
+        still if myFile.sync() or myFile.close() is not called.
+
+  The circuit:
+  - Arduino MKR Zero board
+  - micro SD card attached
+
+  This example code is in the public domain.
+*/
+
+#include <SD.h>
+
+// file name to use for writing
+const char filename[] = "demo.txt";
+
+// File object to represent file
+File txtFile;
+
+// string to buffer output
+String buffer;
+
+unsigned long lastMillis = 0;
+
+void setup() {
+  Serial.begin(9600);
+  while (!Serial);
+
+  // reserve 1kB for String used as a buffer
+  buffer.reserve(1024);
+
+  // set LED pin to output, used to blink when writing
+  pinMode(LED_BUILTIN, OUTPUT);
+
+  // init the SD card
+  if (!SD.begin()) {
+    Serial.println("Card failed, or not present");
+    // don't do anything more:
+    while (1);
+  }
+
+  // If you want to start from an empty file,
+  // uncomment the next line:
+  // SD.remove(filename);
+
+  // try to open the file for writing
+  txtFile = SD.open(filename, FILE_WRITE);
+  if (!txtFile) {
+    Serial.print("error opening ");
+    Serial.println(filename);
+    while (1);
+  }
+
+  // add some new lines to start
+  txtFile.println();
+  txtFile.println("Hello World!");
+}
+
+void loop() {
+  // check if it's been over 10 ms since the last line added
+  unsigned long now = millis();
+  if ((now - lastMillis) >= 10) {
+    // add a new line to the buffer
+    buffer += "Hello ";
+    buffer += now;
+    buffer += "\r\n";
+
+    lastMillis = now;
+  }
+
+  // check if the SD card is available to write data without blocking
+  // and if the buffered data is enough for the full chunk size
+  unsigned int chunkSize = txtFile.availableForWrite();
+  if (chunkSize && buffer.length() >= chunkSize) {
+    // write to file and blink LED
+    digitalWrite(LED_BUILTIN, HIGH);
+    txtFile.write(buffer.c_str(), chunkSize);
+    digitalWrite(LED_BUILTIN, LOW);
+
+    // remove written data from buffer
+    buffer.remove(0, chunkSize);
+  }
+}
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/ReadWrite/ReadWrite.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/ReadWrite/ReadWrite.ino
new file mode 100644
index 000000000..d964668c4
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/ReadWrite/ReadWrite.ino
@@ -0,0 +1,79 @@
+/*
+  SD card read/write
+
+  This example shows how to read and write data to and from an SD card file
+  The circuit:
+   SD card attached to SPI bus as follows:
+ ** MOSI - pin 11
+ ** MISO - pin 12
+ ** CLK - pin 13
+ ** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
+
+  created   Nov 2010
+  by David A. Mellis
+  modified 9 Apr 2012
+  by Tom Igoe
+
+  This example code is in the public domain.
+
+*/
+
+#include <SPI.h>
+#include <SD.h>
+
+File myFile;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+
+  Serial.print("Initializing SD card...");
+
+  if (!SD.begin(4)) {
+    Serial.println("initialization failed!");
+    while (1);
+  }
+  Serial.println("initialization done.");
+
+  // open the file. note that only one file can be open at a time,
+  // so you have to close this one before opening another.
+  myFile = SD.open("test.txt", FILE_WRITE);
+
+  // if the file opened okay, write to it:
+  if (myFile) {
+    Serial.print("Writing to test.txt...");
+    myFile.println("testing 1, 2, 3.");
+    // close the file:
+    myFile.close();
+    Serial.println("done.");
+  } else {
+    // if the file didn't open, print an error:
+    Serial.println("error opening test.txt");
+  }
+
+  // re-open the file for reading:
+  myFile = SD.open("test.txt");
+  if (myFile) {
+    Serial.println("test.txt:");
+
+    // read from the file until there's nothing else in it:
+    while (myFile.available()) {
+      Serial.write(myFile.read());
+    }
+    // close the file:
+    myFile.close();
+  } else {
+    // if the file didn't open, print an error:
+    Serial.println("error opening test.txt");
+  }
+}
+
+void loop() {
+  // nothing happens after setup
+}
+
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/examples/listfiles/listfiles.ino 
b/arduino/ForceSensorTFT/libraries/SD/examples/listfiles/listfiles.ino
new file mode 100644
index 000000000..48f84fb99
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/examples/listfiles/listfiles.ino
@@ -0,0 +1,80 @@
+/*
+  Listfiles
+
+  This example shows how print out the files in a
+  directory on a SD card
+
+  The circuit:
+   SD card attached to SPI bus as follows:
+ ** MOSI - pin 11
+ ** MISO - pin 12
+ ** CLK - pin 13
+ ** CS - pin 4 (for MKRZero SD: SDCARD_SS_PIN)
+
+  created   Nov 2010
+  by David A. Mellis
+  modified 9 Apr 2012
+  by Tom Igoe
+  modified 2 Feb 2014
+  by Scott Fitzgerald
+
+  This example code is in the public domain.
+
+*/
+#include <SPI.h>
+#include <SD.h>
+
+File root;
+
+void setup() {
+  // Open serial communications and wait for port to open:
+  Serial.begin(9600);
+  while (!Serial) {
+    ; // wait for serial port to connect. Needed for native USB port only
+  }
+
+  Serial.print("Initializing SD card...");
+
+  if (!SD.begin(4)) {
+    Serial.println("initialization failed!");
+    while (1);
+  }
+  Serial.println("initialization done.");
+
+  root = SD.open("/");
+
+  printDirectory(root, 0);
+
+  Serial.println("done!");
+}
+
+void loop() {
+  // nothing happens after setup finishes.
+}
+
+void printDirectory(File dir, int numTabs) {
+  while (true) {
+
+    File entry =  dir.openNextFile();
+    if (! entry) {
+      // no more files
+      break;
+    }
+    for (uint8_t i = 0; i < numTabs; i++) {
+      Serial.print('\t');
+    }
+    Serial.print(entry.name());
+    if (entry.isDirectory()) {
+      Serial.println("/");
+      printDirectory(entry, numTabs + 1);
+    } else {
+      // files have sizes, directories do not
+      Serial.print("\t\t");
+      Serial.println(entry.size(), DEC);
+    }
+    entry.close();
+  }
+}
+
+
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/extras/codespell-ignore-words-list.txt 
b/arduino/ForceSensorTFT/libraries/SD/extras/codespell-ignore-words-list.txt
new file mode 100644
index 000000000..e69de29bb
diff --git a/arduino/ForceSensorTFT/libraries/SD/keywords.txt 
b/arduino/ForceSensorTFT/libraries/SD/keywords.txt
new file mode 100644
index 000000000..91e74b830
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/keywords.txt
@@ -0,0 +1,31 @@
+#######################################
+# Syntax Coloring Map SD
+#######################################
+
+#######################################
+# Datatypes (KEYWORD1)
+#######################################
+
+SD     KEYWORD1        SD
+File   KEYWORD1        SD
+SDFile KEYWORD1        SD
+
+#######################################
+# Methods and Functions (KEYWORD2)
+#######################################
+begin  KEYWORD2
+exists KEYWORD2
+mkdir  KEYWORD2
+remove KEYWORD2
+rmdir  KEYWORD2
+open   KEYWORD2
+close  KEYWORD2
+seek   KEYWORD2
+position       KEYWORD2
+size   KEYWORD2        
+
+#######################################
+# Constants (LITERAL1)
+#######################################
+FILE_READ      LITERAL1
+FILE_WRITE     LITERAL1
diff --git a/arduino/ForceSensorTFT/libraries/SD/library.properties 
b/arduino/ForceSensorTFT/libraries/SD/library.properties
new file mode 100644
index 000000000..60e885928
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/library.properties
@@ -0,0 +1,9 @@
+name=SD
+version=1.2.4
+author=Arduino, SparkFun
+maintainer=Arduino <info arduino cc>
+sentence=Enables reading and writing on SD cards. 
+paragraph=Once an SD memory card is connected to the SPI interface of the Arduino or Genuino board you can 
create files and read/write on them. You can also move through directories on the SD card.
+category=Data Storage
+url=http://www.arduino.cc/en/Reference/SD
+architectures=*
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/File.cpp 
b/arduino/ForceSensorTFT/libraries/SD/src/File.cpp
new file mode 100644
index 000000000..5e37166b5
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/File.cpp
@@ -0,0 +1,168 @@
+/*
+
+  SD - a slightly more friendly wrapper for sdfatlib
+
+  This library aims to expose a subset of SD card functionality
+  in the form of a higher level "wrapper" object.
+
+  License: GNU General Public License V3
+          (Because sdfatlib is licensed with this.)
+
+  (C) Copyright 2010 SparkFun Electronics
+
+*/
+
+#include <SD.h>
+
+/* for debugging file open/close leaks
+   uint8_t nfilecount=0;
+*/
+
+File::File(SdFile f, const char *n) {
+  // oh man you are kidding me, new() doesn't exist? Ok we do it by hand!
+  _file = (SdFile *)malloc(sizeof(SdFile));
+  if (_file) {
+    memcpy(_file, &f, sizeof(SdFile));
+
+    strncpy(_name, n, 12);
+    _name[12] = 0;
+
+    /* for debugging file open/close leaks
+       nfilecount++;
+       Serial.print("Created \"");
+       Serial.print(n);
+       Serial.print("\": ");
+       Serial.println(nfilecount, DEC);
+    */
+  }
+}
+
+File::File(void) {
+  _file = 0;
+  _name[0] = 0;
+  //Serial.print("Created empty file object");
+}
+
+// returns a pointer to the file name
+char *File::name(void) {
+  return _name;
+}
+
+// a directory is a special type of file
+boolean File::isDirectory(void) {
+  return (_file && _file->isDir());
+}
+
+
+size_t File::write(uint8_t val) {
+  return write(&val, 1);
+}
+
+size_t File::write(const uint8_t *buf, size_t size) {
+  size_t t;
+  if (!_file) {
+    setWriteError();
+    return 0;
+  }
+  _file->clearWriteError();
+  t = _file->write(buf, size);
+  if (_file->getWriteError()) {
+    setWriteError();
+    return 0;
+  }
+  return t;
+}
+
+int File::availableForWrite() {
+  if (_file) {
+    return _file->availableForWrite();
+  }
+  return 0;
+}
+
+int File::peek() {
+  if (! _file) {
+    return 0;
+  }
+
+  int c = _file->read();
+  if (c != -1) {
+    _file->seekCur(-1);
+  }
+  return c;
+}
+
+int File::read() {
+  if (_file) {
+    return _file->read();
+  }
+  return -1;
+}
+
+// buffered read for more efficient, high speed reading
+int File::read(void *buf, uint16_t nbyte) {
+  if (_file) {
+    return _file->read(buf, nbyte);
+  }
+  return 0;
+}
+
+int File::available() {
+  if (! _file) {
+    return 0;
+  }
+
+  uint32_t n = size() - position();
+
+  return n > 0X7FFF ? 0X7FFF : n;
+}
+
+void File::flush() {
+  if (_file) {
+    _file->sync();
+  }
+}
+
+boolean File::seek(uint32_t pos) {
+  if (! _file) {
+    return false;
+  }
+
+  return _file->seekSet(pos);
+}
+
+uint32_t File::position() {
+  if (! _file) {
+    return -1;
+  }
+  return _file->curPosition();
+}
+
+uint32_t File::size() {
+  if (! _file) {
+    return 0;
+  }
+  return _file->fileSize();
+}
+
+void File::close() {
+  if (_file) {
+    _file->close();
+    free(_file);
+    _file = 0;
+
+    /* for debugging file open/close leaks
+      nfilecount--;
+      Serial.print("Deleted ");
+      Serial.println(nfilecount, DEC);
+    */
+  }
+}
+
+File::operator bool() {
+  if (_file) {
+    return  _file->isOpen();
+  }
+  return false;
+}
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/README.txt 
b/arduino/ForceSensorTFT/libraries/SD/src/README.txt
new file mode 100644
index 000000000..495ea4c79
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/README.txt
@@ -0,0 +1,13 @@
+
+** SD - a slightly more friendly wrapper for sdfatlib **
+
+This library aims to expose a subset of SD card functionality in the
+form of a higher level "wrapper" object.
+
+License: GNU General Public License V3
+         (Because sdfatlib is licensed with this.)
+
+(C) Copyright 2010 SparkFun Electronics
+
+Now better than ever with optimization, multiple file support, directory handling, etc - ladyada!
+
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/SD.cpp b/arduino/ForceSensorTFT/libraries/SD/src/SD.cpp
new file mode 100644
index 000000000..8c9a29e71
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/SD.cpp
@@ -0,0 +1,637 @@
+/*
+
+  SD - a slightly more friendly wrapper for sdfatlib
+
+  This library aims to expose a subset of SD card functionality
+  in the form of a higher level "wrapper" object.
+
+  License: GNU General Public License V3
+          (Because sdfatlib is licensed with this.)
+
+  (C) Copyright 2010 SparkFun Electronics
+
+
+  This library provides four key benefits:
+
+     Including `SD.h` automatically creates a global
+     `SD` object which can be interacted with in a similar
+     manner to other standard global objects like `Serial` and `Ethernet`.
+
+     Boilerplate initialisation code is contained in one method named
+     `begin` and no further objects need to be created in order to access
+     the SD card.
+
+     Calls to `open` can supply a full path name including parent
+     directories which simplifies interacting with files in subdirectories.
+
+     Utility methods are provided to determine whether a file exists
+     and to create a directory hierarchy.
+
+
+  Note however that not all functionality provided by the underlying
+  sdfatlib library is exposed.
+
+*/
+
+/*
+
+  Implementation Notes
+
+  In order to handle multi-directory path traversal, functionality that
+  requires this ability is implemented as callback functions.
+
+  Individual methods call the `walkPath` function which performs the actual
+  directory traversal (swapping between two different directory/file handles
+  along the way) and at each level calls the supplied callback function.
+
+  Some types of functionality will take an action at each level (e.g. exists
+  or make directory) which others will only take an action at the bottom
+  level (e.g. open).
+
+*/
+
+#include "SD.h"
+
+namespace SDLib {
+
+  // Used by `getNextPathComponent`
+#define MAX_COMPONENT_LEN 12 // What is max length?
+#define PATH_COMPONENT_BUFFER_LEN MAX_COMPONENT_LEN+1
+
+  bool getNextPathComponent(const char *path, unsigned int *p_offset,
+                            char *buffer) {
+    /*
+
+      Parse individual path components from a path.
+
+        e.g. after repeated calls '/foo/bar/baz' will be split
+             into 'foo', 'bar', 'baz'.
+
+      This is similar to `strtok()` but copies the component into the
+      supplied buffer rather than modifying the original string.
+
+
+      `buffer` needs to be PATH_COMPONENT_BUFFER_LEN in size.
+
+      `p_offset` needs to point to an integer of the offset at
+      which the previous path component finished.
+
+      Returns `true` if more components remain.
+
+      Returns `false` if this is the last component.
+        (This means path ended with 'foo' or 'foo/'.)
+
+    */
+
+    // TODO: Have buffer local to this function, so we know it's the
+    //       correct length?
+
+    int bufferOffset = 0;
+
+    int offset = *p_offset;
+
+    // Skip root or other separator
+    if (path[offset] == '/') {
+      offset++;
+    }
+
+    // Copy the next next path segment
+    while (bufferOffset < MAX_COMPONENT_LEN
+           && (path[offset] != '/')
+           && (path[offset] != '\0')) {
+      buffer[bufferOffset++] = path[offset++];
+    }
+
+    buffer[bufferOffset] = '\0';
+
+    // Skip trailing separator so we can determine if this
+    // is the last component in the path or not.
+    if (path[offset] == '/') {
+      offset++;
+    }
+
+    *p_offset = offset;
+
+    return (path[offset] != '\0');
+  }
+
+
+
+  boolean walkPath(const char *filepath, SdFile& parentDir,
+                   boolean(*callback)(SdFile& parentDir,
+                                      const char *filePathComponent,
+                                      boolean isLastComponent,
+                                      void *object),
+                   void *object = NULL) {
+    /*
+
+       When given a file path (and parent directory--normally root),
+       this function traverses the directories in the path and at each
+       level calls the supplied callback function while also providing
+       the supplied object for context if required.
+
+         e.g. given the path '/foo/bar/baz'
+              the callback would be called at the equivalent of
+        '/foo', '/foo/bar' and '/foo/bar/baz'.
+
+       The implementation swaps between two different directory/file
+       handles as it traverses the directories and does not use recursion
+       in an attempt to use memory efficiently.
+
+       If a callback wishes to stop the directory traversal it should
+       return false--in this case the function will stop the traversal,
+       tidy up and return false.
+
+       If a directory path doesn't exist at some point this function will
+       also return false and not subsequently call the callback.
+
+       If a directory path specified is complete, valid and the callback
+       did not indicate the traversal should be interrupted then this
+       function will return true.
+
+    */
+
+
+    SdFile subfile1;
+    SdFile subfile2;
+
+    char buffer[PATH_COMPONENT_BUFFER_LEN];
+
+    unsigned int offset = 0;
+
+    SdFile *p_parent;
+    SdFile *p_child;
+
+    SdFile *p_tmp_sdfile;
+
+    p_child = &subfile1;
+
+    p_parent = &parentDir;
+
+    while (true) {
+
+      boolean moreComponents = getNextPathComponent(filepath, &offset, buffer);
+
+      boolean shouldContinue = callback((*p_parent), buffer, !moreComponents, object);
+
+      if (!shouldContinue) {
+        // TODO: Don't repeat this code?
+        // If it's one we've created then we
+        // don't need the parent handle anymore.
+        if (p_parent != &parentDir) {
+          (*p_parent).close();
+        }
+        return false;
+      }
+
+      if (!moreComponents) {
+        break;
+      }
+
+      boolean exists = (*p_child).open(*p_parent, buffer, O_RDONLY);
+
+      // If it's one we've created then we
+      // don't need the parent handle anymore.
+      if (p_parent != &parentDir) {
+        (*p_parent).close();
+      }
+
+      // Handle case when it doesn't exist and we can't continue...
+      if (exists) {
+        // We alternate between two file handles as we go down
+        // the path.
+        if (p_parent == &parentDir) {
+          p_parent = &subfile2;
+        }
+
+        p_tmp_sdfile = p_parent;
+        p_parent = p_child;
+        p_child = p_tmp_sdfile;
+      } else {
+        return false;
+      }
+    }
+
+    if (p_parent != &parentDir) {
+      (*p_parent).close(); // TODO: Return/ handle different?
+    }
+
+    return true;
+  }
+
+
+
+  /*
+
+     The callbacks used to implement various functionality follow.
+
+     Each callback is supplied with a parent directory handle,
+     character string with the name of the current file path component,
+     a flag indicating if this component is the last in the path and
+     a pointer to an arbitrary object used for context.
+
+  */
+
+  boolean callback_pathExists(SdFile& parentDir, const char *filePathComponent,
+                              boolean /* isLastComponent */, void * /* object */) {
+    /*
+
+      Callback used to determine if a file/directory exists in parent
+      directory.
+
+      Returns true if file path exists.
+
+    */
+    SdFile child;
+
+    boolean exists = child.open(parentDir, filePathComponent, O_RDONLY);
+
+    if (exists) {
+      child.close();
+    }
+
+    return exists;
+  }
+
+
+
+  boolean callback_makeDirPath(SdFile& parentDir, const char *filePathComponent,
+                               boolean isLastComponent, void *object) {
+    /*
+
+      Callback used to create a directory in the parent directory if
+      it does not already exist.
+
+      Returns true if a directory was created or it already existed.
+
+    */
+    boolean result = false;
+    SdFile child;
+
+    result = callback_pathExists(parentDir, filePathComponent, isLastComponent, object);
+    if (!result) {
+      result = child.makeDir(parentDir, filePathComponent);
+    }
+
+    return result;
+  }
+
+
+  /*
+
+    boolean callback_openPath(SdFile& parentDir, char *filePathComponent,
+                 boolean isLastComponent, void *object) {
+
+    Callback used to open a file specified by a filepath that may
+    specify one or more directories above it.
+
+    Expects the context object to be an instance of `SDClass` and
+    will use the `file` property of the instance to open the requested
+    file/directory with the associated file open mode property.
+
+    Always returns true if the directory traversal hasn't reached the
+    bottom of the directory hierarchy.
+
+    Returns false once the file has been opened--to prevent the traversal
+    from descending further. (This may be unnecessary.)
+
+    if (isLastComponent) {
+    SDClass *p_SD = static_cast<SDClass*>(object);
+    p_SD->file.open(parentDir, filePathComponent, p_SD->fileOpenMode);
+    if (p_SD->fileOpenMode == FILE_WRITE) {
+      p_SD->file.seekSet(p_SD->file.fileSize());
+    }
+    // TODO: Return file open result?
+    return false;
+    }
+    return true;
+    }
+  */
+
+
+
+  boolean callback_remove(SdFile& parentDir, const char *filePathComponent,
+                          boolean isLastComponent, void * /* object */) {
+    if (isLastComponent) {
+      return SdFile::remove(parentDir, filePathComponent);
+    }
+    return true;
+  }
+
+  boolean callback_rmdir(SdFile& parentDir, const char *filePathComponent,
+                         boolean isLastComponent, void * /* object */) {
+    if (isLastComponent) {
+      SdFile f;
+      if (!f.open(parentDir, filePathComponent, O_READ)) {
+        return false;
+      }
+      return f.rmDir();
+    }
+    return true;
+  }
+
+
+
+  /* Implementation of class used to create `SDCard` object. */
+
+
+
+  boolean SDClass::begin(uint8_t csPin) {
+    if (root.isOpen()) {
+      root.close();
+    }
+
+    /*
+
+      Performs the initialisation required by the sdfatlib library.
+
+      Return true if initialization succeeds, false otherwise.
+
+    */
+    return card.init(SPI_HALF_SPEED, csPin) &&
+           volume.init(card) &&
+           root.openRoot(volume);
+  }
+
+  boolean SDClass::begin(uint32_t clock, uint8_t csPin) {
+    if (root.isOpen()) {
+      root.close();
+    }
+
+    return card.init(SPI_HALF_SPEED, csPin) &&
+           card.setSpiClock(clock) &&
+           volume.init(card) &&
+           root.openRoot(volume);
+  }
+
+  //call this when a card is removed. It will allow you to insert and initialise a new card.
+  void SDClass::end() {
+    root.close();
+  }
+
+  // this little helper is used to traverse paths
+  SdFile SDClass::getParentDir(const char *filepath, int *index) {
+    // get parent directory
+    SdFile d1;
+    SdFile d2;
+
+    d1.openRoot(volume); // start with the mostparent, root!
+
+    // we'll use the pointers to swap between the two objects
+    SdFile *parent = &d1;
+    SdFile *subdir = &d2;
+
+    const char *origpath = filepath;
+
+    while (strchr(filepath, '/')) {
+
+      // get rid of leading /'s
+      if (filepath[0] == '/') {
+        filepath++;
+        continue;
+      }
+
+      if (! strchr(filepath, '/')) {
+        // it was in the root directory, so leave now
+        break;
+      }
+
+      // extract just the name of the next subdirectory
+      uint8_t idx = strchr(filepath, '/') - filepath;
+      if (idx > 12) {
+        idx = 12;  // don't let them specify long names
+      }
+      char subdirname[13];
+      strncpy(subdirname, filepath, idx);
+      subdirname[idx] = 0;
+
+      // close the subdir (we reuse them) if open
+      subdir->close();
+      if (! subdir->open(parent, subdirname, O_READ)) {
+        // failed to open one of the subdirectories
+        return SdFile();
+      }
+      // move forward to the next subdirectory
+      filepath += idx;
+
+      // we reuse the objects, close it.
+      parent->close();
+
+      // swap the pointers
+      SdFile *t = parent;
+      parent = subdir;
+      subdir = t;
+    }
+
+    *index = (int)(filepath - origpath);
+    // parent is now the parent directory of the file!
+    return *parent;
+  }
+
+
+  File SDClass::open(const char *filepath, uint8_t mode) {
+    /*
+
+       Open the supplied file path for reading or writing.
+
+       The file content can be accessed via the `file` property of
+       the `SDClass` object--this property is currently
+       a standard `SdFile` object from `sdfatlib`.
+
+       Defaults to read only.
+
+       If `write` is true, default action (when `append` is true) is to
+       append data to the end of the file.
+
+       If `append` is false then the file will be truncated first.
+
+       If the file does not exist and it is opened for writing the file
+       will be created.
+
+       An attempt to open a file for reading that does not exist is an
+       error.
+
+    */
+
+    int pathidx;
+
+    // do the interactive search
+    SdFile parentdir = getParentDir(filepath, &pathidx);
+    // no more subdirs!
+
+    filepath += pathidx;
+
+    if (! filepath[0]) {
+      // it was the directory itself!
+      return File(parentdir, "/");
+    }
+
+    // Open the file itself
+    SdFile file;
+
+    // failed to open a subdir!
+    if (!parentdir.isOpen()) {
+      return File();
+    }
+
+    if (! file.open(parentdir, filepath, mode)) {
+      return File();
+    }
+    // close the parent
+    parentdir.close();
+
+    if ((mode & (O_APPEND | O_WRITE)) == (O_APPEND | O_WRITE)) {
+      file.seekSet(file.fileSize());
+    }
+    return File(file, filepath);
+  }
+
+
+  /*
+    File SDClass::open(char *filepath, uint8_t mode) {
+    //
+
+       Open the supplied file path for reading or writing.
+
+       The file content can be accessed via the `file` property of
+       the `SDClass` object--this property is currently
+       a standard `SdFile` object from `sdfatlib`.
+
+       Defaults to read only.
+
+       If `write` is true, default action (when `append` is true) is to
+       append data to the end of the file.
+
+       If `append` is false then the file will be truncated first.
+
+       If the file does not exist and it is opened for writing the file
+       will be created.
+
+       An attempt to open a file for reading that does not exist is an
+       error.
+
+     //
+
+    // TODO: Allow for read&write? (Possibly not, as it requires seek.)
+
+    fileOpenMode = mode;
+    walkPath(filepath, root, callback_openPath, this);
+
+    return File();
+
+    }
+  */
+
+
+  //boolean SDClass::close() {
+  //  /*
+  //
+  //    Closes the file opened by the `open` method.
+  //
+  //   */
+  //  file.close();
+  //}
+
+
+  boolean SDClass::exists(const char *filepath) {
+    /*
+
+       Returns true if the supplied file path exists.
+
+    */
+    return walkPath(filepath, root, callback_pathExists);
+  }
+
+
+  //boolean SDClass::exists(char *filepath, SdFile& parentDir) {
+  //  /*
+  //
+  //     Returns true if the supplied file path rooted at `parentDir`
+  //     exists.
+  //
+  //   */
+  //  return walkPath(filepath, parentDir, callback_pathExists);
+  //}
+
+
+  boolean SDClass::mkdir(const char *filepath) {
+    /*
+
+      Makes a single directory or a hierarchy of directories.
+
+      A rough equivalent to `mkdir -p`.
+
+    */
+    return walkPath(filepath, root, callback_makeDirPath);
+  }
+
+  boolean SDClass::rmdir(const char *filepath) {
+    /*
+
+      Remove a single directory or a hierarchy of directories.
+
+      A rough equivalent to `rm -rf`.
+
+    */
+    return walkPath(filepath, root, callback_rmdir);
+  }
+
+  boolean SDClass::remove(const char *filepath) {
+    return walkPath(filepath, root, callback_remove);
+  }
+
+
+  // allows you to recurse into a directory
+  File File::openNextFile(uint8_t mode) {
+    dir_t p;
+
+    //Serial.print("\t\treading dir...");
+    while (_file->readDir(&p) > 0) {
+
+      // done if past last used entry
+      if (p.name[0] == DIR_NAME_FREE) {
+        //Serial.println("end");
+        return File();
+      }
+
+      // skip deleted entry and entries for . and  ..
+      if (p.name[0] == DIR_NAME_DELETED || p.name[0] == '.') {
+        //Serial.println("dots");
+        continue;
+      }
+
+      // only list subdirectories and files
+      if (!DIR_IS_FILE_OR_SUBDIR(&p)) {
+        //Serial.println("notafile");
+        continue;
+      }
+
+      // print file name with possible blank fill
+      SdFile f;
+      char name[13];
+      _file->dirName(p, name);
+      //Serial.print("try to open file ");
+      //Serial.println(name);
+
+      if (f.open(_file, name, mode)) {
+        //Serial.println("OK!");
+        return File(f, name);
+      } else {
+        //Serial.println("ugh");
+        return File();
+      }
+    }
+
+    //Serial.println("nothing");
+    return File();
+  }
+
+  void File::rewindDirectory(void) {
+    if (isDirectory()) {
+      _file->rewind();
+    }
+  }
+
+  SDClass SD;
+
+};
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/SD.h b/arduino/ForceSensorTFT/libraries/SD/src/SD.h
new file mode 100644
index 000000000..fa34ccd5d
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/SD.h
@@ -0,0 +1,138 @@
+/*
+
+  SD - a slightly more friendly wrapper for sdfatlib
+
+  This library aims to expose a subset of SD card functionality
+  in the form of a higher level "wrapper" object.
+
+  License: GNU General Public License V3
+          (Because sdfatlib is licensed with this.)
+
+  (C) Copyright 2010 SparkFun Electronics
+
+*/
+
+#ifndef __SD_H__
+#define __SD_H__
+
+#include <Arduino.h>
+
+#include "utility/SdFat.h"
+#include "utility/SdFatUtil.h"
+
+#define FILE_READ O_READ
+#define FILE_WRITE (O_READ | O_WRITE | O_CREAT | O_APPEND)
+
+namespace SDLib {
+
+  class File : public Stream {
+    private:
+      char _name[13]; // our name
+      SdFile *_file;  // underlying file pointer
+
+    public:
+      File(SdFile f, const char *name);     // wraps an underlying SdFile
+      File(void);      // 'empty' constructor
+      virtual size_t write(uint8_t);
+      virtual size_t write(const uint8_t *buf, size_t size);
+      virtual int availableForWrite();
+      virtual int read();
+      virtual int peek();
+      virtual int available();
+      virtual void flush();
+      int read(void *buf, uint16_t nbyte);
+      boolean seek(uint32_t pos);
+      uint32_t position();
+      uint32_t size();
+      void close();
+      operator bool();
+      char * name();
+
+      boolean isDirectory(void);
+      File openNextFile(uint8_t mode = O_RDONLY);
+      void rewindDirectory(void);
+
+      using Print::write;
+  };
+
+  class SDClass {
+
+    private:
+      // These are required for initialisation and use of sdfatlib
+      Sd2Card card;
+      SdVolume volume;
+      SdFile root;
+
+      // my quick&dirty iterator, should be replaced
+      SdFile getParentDir(const char *filepath, int *indx);
+    public:
+      // This needs to be called to set up the connection to the SD card
+      // before other methods are used.
+      boolean begin(uint8_t csPin = SD_CHIP_SELECT_PIN);
+      boolean begin(uint32_t clock, uint8_t csPin);
+
+      //call this when a card is removed. It will allow you to insert and initialise a new card.
+      void end();
+
+      // Open the specified file/directory with the supplied mode (e.g. read or
+      // write, etc). Returns a File object for interacting with the file.
+      // Note that currently only one file can be open at a time.
+      File open(const char *filename, uint8_t mode = FILE_READ);
+      File open(const String &filename, uint8_t mode = FILE_READ) {
+        return open(filename.c_str(), mode);
+      }
+
+      // Methods to determine if the requested file path exists.
+      boolean exists(const char *filepath);
+      boolean exists(const String &filepath) {
+        return exists(filepath.c_str());
+      }
+
+      // Create the requested directory heirarchy--if intermediate directories
+      // do not exist they will be created.
+      boolean mkdir(const char *filepath);
+      boolean mkdir(const String &filepath) {
+        return mkdir(filepath.c_str());
+      }
+
+      // Delete the file.
+      boolean remove(const char *filepath);
+      boolean remove(const String &filepath) {
+        return remove(filepath.c_str());
+      }
+
+      boolean rmdir(const char *filepath);
+      boolean rmdir(const String &filepath) {
+        return rmdir(filepath.c_str());
+      }
+
+    private:
+
+      // This is used to determine the mode used to open a file
+      // it's here because it's the easiest place to pass the
+      // information through the directory walking function. But
+      // it's probably not the best place for it.
+      // It shouldn't be set directly--it is set via the parameters to `open`.
+      int fileOpenMode;
+
+      friend class File;
+      friend boolean callback_openPath(SdFile&, const char *, boolean, void *);
+  };
+
+  extern SDClass SD;
+
+};
+
+// We enclose File and SD classes in namespace SDLib to avoid conflicts
+// with others legacy libraries that redefines File class.
+
+// This ensure compatibility with sketches that uses only SD library
+using namespace SDLib;
+
+// This allows sketches to use SDLib::File with other libraries (in the
+// sketch you must use SDFile instead of File to disambiguate)
+typedef SDLib::File    SDFile;
+typedef SDLib::SDClass SDFileSystemClass;
+#define SDFileSystem   SDLib::SD
+
+#endif
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/FatStructs.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/FatStructs.h
new file mode 100644
index 000000000..84c1cc71b
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/FatStructs.h
@@ -0,0 +1,418 @@
+/* Arduino SdFat Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#ifndef FatStructs_h
+#define FatStructs_h
+/**
+   \file
+   FAT file structures
+*/
+/*
+   mostly from Microsoft document fatgen103.doc
+   http://www.microsoft.com/whdc/system/platform/firmware/fatgen.mspx
+*/
+//------------------------------------------------------------------------------
+/** Value for byte 510 of boot block or MBR */
+uint8_t const BOOTSIG0 = 0X55;
+/** Value for byte 511 of boot block or MBR */
+uint8_t const BOOTSIG1 = 0XAA;
+//------------------------------------------------------------------------------
+/**
+   \struct partitionTable
+   \brief MBR partition table entry
+
+   A partition table entry for a MBR formatted storage device.
+   The MBR partition table has four entries.
+*/
+struct partitionTable {
+  /**
+     Boot Indicator . Indicates whether the volume is the active
+     partition.  Legal values include: 0X00. Do not use for booting.
+     0X80 Active partition.
+  */
+  uint8_t  boot;
+  /**
+      Head part of Cylinder-head-sector address of the first block in
+      the partition. Legal values are 0-255. Only used in old PC BIOS.
+  */
+  uint8_t  beginHead;
+  /**
+     Sector part of Cylinder-head-sector address of the first block in
+     the partition. Legal values are 1-63. Only used in old PC BIOS.
+  */
+  unsigned beginSector : 6;
+  /** High bits cylinder for first block in partition. */
+  unsigned beginCylinderHigh : 2;
+  /**
+     Combine beginCylinderLow with beginCylinderHigh. Legal values
+     are 0-1023.  Only used in old PC BIOS.
+  */
+  uint8_t  beginCylinderLow;
+  /**
+     Partition type. See defines that begin with PART_TYPE_ for
+     some Microsoft partition types.
+  */
+  uint8_t  type;
+  /**
+     head part of cylinder-head-sector address of the last sector in the
+     partition.  Legal values are 0-255. Only used in old PC BIOS.
+  */
+  uint8_t  endHead;
+  /**
+     Sector part of cylinder-head-sector address of the last sector in
+     the partition.  Legal values are 1-63. Only used in old PC BIOS.
+  */
+  unsigned endSector : 6;
+  /** High bits of end cylinder */
+  unsigned endCylinderHigh : 2;
+  /**
+     Combine endCylinderLow with endCylinderHigh. Legal values
+     are 0-1023.  Only used in old PC BIOS.
+  */
+  uint8_t  endCylinderLow;
+  /** Logical block address of the first block in the partition. */
+  uint32_t firstSector;
+  /** Length of the partition, in blocks. */
+  uint32_t totalSectors;
+} __attribute__((packed));
+/** Type name for partitionTable */
+typedef struct partitionTable part_t;
+//------------------------------------------------------------------------------
+/**
+   \struct masterBootRecord
+
+   \brief Master Boot Record
+
+   The first block of a storage device that is formatted with a MBR.
+*/
+struct masterBootRecord {
+  /** Code Area for master boot program. */
+  uint8_t  codeArea[440];
+  /** Optional WindowsNT disk signature. May contain more boot code. */
+  uint32_t diskSignature;
+  /** Usually zero but may be more boot code. */
+  uint16_t usuallyZero;
+  /** Partition tables. */
+  part_t   part[4];
+  /** First MBR signature byte. Must be 0X55 */
+  uint8_t  mbrSig0;
+  /** Second MBR signature byte. Must be 0XAA */
+  uint8_t  mbrSig1;
+} __attribute__((packed));
+/** Type name for masterBootRecord */
+typedef struct masterBootRecord mbr_t;
+//------------------------------------------------------------------------------
+/**
+   \struct biosParmBlock
+
+   \brief BIOS parameter block
+
+    The BIOS parameter block describes the physical layout of a FAT volume.
+*/
+struct biosParmBlock {
+  /**
+     Count of bytes per sector. This value may take on only the
+     following values: 512, 1024, 2048 or 4096
+  */
+  uint16_t bytesPerSector;
+  /**
+     Number of sectors per allocation unit. This value must be a
+     power of 2 that is greater than 0. The legal values are
+     1, 2, 4, 8, 16, 32, 64, and 128.
+  */
+  uint8_t  sectorsPerCluster;
+  /**
+     Number of sectors before the first FAT.
+     This value must not be zero.
+  */
+  uint16_t reservedSectorCount;
+  /** The count of FAT data structures on the volume. This field should
+      always contain the value 2 for any FAT volume of any type.
+  */
+  uint8_t  fatCount;
+  /**
+    For FAT12 and FAT16 volumes, this field contains the count of
+    32-byte directory entries in the root directory. For FAT32 volumes,
+    this field must be set to 0. For FAT12 and FAT16 volumes, this
+    value should always specify a count that when multiplied by 32
+    results in a multiple of bytesPerSector.  FAT16 volumes should
+    use the value 512.
+  */
+  uint16_t rootDirEntryCount;
+  /**
+     This field is the old 16-bit total count of sectors on the volume.
+     This count includes the count of all sectors in all four regions
+     of the volume. This field can be 0; if it is 0, then totalSectors32
+     must be non-zero.  For FAT32 volumes, this field must be 0. For
+     FAT12 and FAT16 volumes, this field contains the sector count, and
+     totalSectors32 is 0 if the total sector count fits
+     (is less than 0x10000).
+  */
+  uint16_t totalSectors16;
+  /**
+     This dates back to the old MS-DOS 1.x media determination and is
+     no longer usually used for anything.  0xF8 is the standard value
+     for fixed (non-removable) media. For removable media, 0xF0 is
+     frequently used. Legal values are 0xF0 or 0xF8-0xFF.
+  */
+  uint8_t  mediaType;
+  /**
+     Count of sectors occupied by one FAT on FAT12/FAT16 volumes.
+     On FAT32 volumes this field must be 0, and sectorsPerFat32
+     contains the FAT size count.
+  */
+  uint16_t sectorsPerFat16;
+  /** Sectors per track for interrupt 0x13. Not used otherwise. */
+  uint16_t sectorsPerTrtack;
+  /** Number of heads for interrupt 0x13.  Not used otherwise. */
+  uint16_t headCount;
+  /**
+     Count of hidden sectors preceding the partition that contains this
+     FAT volume. This field is generally only relevant for media
+      visible on interrupt 0x13.
+  */
+  uint32_t hidddenSectors;
+  /**
+     This field is the new 32-bit total count of sectors on the volume.
+     This count includes the count of all sectors in all four regions
+     of the volume.  This field can be 0; if it is 0, then
+     totalSectors16 must be non-zero.
+  */
+  uint32_t totalSectors32;
+  /**
+     Count of sectors occupied by one FAT on FAT32 volumes.
+  */
+  uint32_t sectorsPerFat32;
+  /**
+     This field is only defined for FAT32 media and does not exist on
+     FAT12 and FAT16 media.
+     Bits 0-3 -- Zero-based number of active FAT.
+                 Only valid if mirroring is disabled.
+     Bits 4-6 -- Reserved.
+     Bit 7     -- 0 means the FAT is mirrored at runtime into all FATs.
+            -- 1 means only one FAT is active; it is the one referenced in bits 0-3.
+     Bits 8-15         -- Reserved.
+  */
+  uint16_t fat32Flags;
+  /**
+     FAT32 version. High byte is major revision number.
+     Low byte is minor revision number. Only 0.0 define.
+  */
+  uint16_t fat32Version;
+  /**
+     Cluster number of the first cluster of the root directory for FAT32.
+     This usually 2 but not required to be 2.
+  */
+  uint32_t fat32RootCluster;
+  /**
+     Sector number of FSINFO structure in the reserved area of the
+     FAT32 volume. Usually 1.
+  */
+  uint16_t fat32FSInfo;
+  /**
+     If non-zero, indicates the sector number in the reserved area
+     of the volume of a copy of the boot record. Usually 6.
+     No value other than 6 is recommended.
+  */
+  uint16_t fat32BackBootBlock;
+  /**
+     Reserved for future expansion. Code that formats FAT32 volumes
+     should always set all of the bytes of this field to 0.
+  */
+  uint8_t  fat32Reserved[12];
+} __attribute__((packed));
+/** Type name for biosParmBlock */
+typedef struct biosParmBlock bpb_t;
+//------------------------------------------------------------------------------
+/**
+   \struct fat32BootSector
+
+   \brief Boot sector for a FAT16 or FAT32 volume.
+
+*/
+struct fat32BootSector {
+  /** X86 jmp to boot program */
+  uint8_t  jmpToBootCode[3];
+  /** informational only - don't depend on it */
+  char     oemName[8];
+  /** BIOS Parameter Block */
+  bpb_t    bpb;
+  /** for int0x13 use value 0X80 for hard drive */
+  uint8_t  driveNumber;
+  /** used by Windows NT - should be zero for FAT */
+  uint8_t  reserved1;
+  /** 0X29 if next three fields are valid */
+  uint8_t  bootSignature;
+  /** usually generated by combining date and time */
+  uint32_t volumeSerialNumber;
+  /** should match volume label in root dir */
+  char     volumeLabel[11];
+  /** informational only - don't depend on it */
+  char     fileSystemType[8];
+  /** X86 boot code */
+  uint8_t  bootCode[420];
+  /** must be 0X55 */
+  uint8_t  bootSectorSig0;
+  /** must be 0XAA */
+  uint8_t  bootSectorSig1;
+} __attribute__((packed));
+//------------------------------------------------------------------------------
+// End Of Chain values for FAT entries
+/** FAT16 end of chain value used by Microsoft. */
+uint16_t const FAT16EOC = 0XFFFF;
+/** Minimum value for FAT16 EOC.  Use to test for EOC. */
+uint16_t const FAT16EOC_MIN = 0XFFF8;
+/** FAT32 end of chain value used by Microsoft. */
+uint32_t const FAT32EOC = 0X0FFFFFFF;
+/** Minimum value for FAT32 EOC.  Use to test for EOC. */
+uint32_t const FAT32EOC_MIN = 0X0FFFFFF8;
+/** Mask a for FAT32 entry. Entries are 28 bits. */
+uint32_t const FAT32MASK = 0X0FFFFFFF;
+
+/** Type name for fat32BootSector */
+typedef struct fat32BootSector fbs_t;
+//------------------------------------------------------------------------------
+/**
+   \struct directoryEntry
+   \brief FAT short directory entry
+
+   Short means short 8.3 name, not the entry size.
+
+   Date Format. A FAT directory entry date stamp is a 16-bit field that is
+   basically a date relative to the MS-DOS epoch of 01/01/1980. Here is the
+   format (bit 0 is the LSB of the 16-bit word, bit 15 is the MSB of the
+   16-bit word):
+
+   Bits 9-15: Count of years from 1980, valid value range 0-127
+   inclusive (1980-2107).
+
+   Bits 5-8: Month of year, 1 = January, valid value range 1-12 inclusive.
+
+   Bits 0-4: Day of month, valid value range 1-31 inclusive.
+
+   Time Format. A FAT directory entry time stamp is a 16-bit field that has
+   a granularity of 2 seconds. Here is the format (bit 0 is the LSB of the
+   16-bit word, bit 15 is the MSB of the 16-bit word).
+
+   Bits 11-15: Hours, valid value range 0-23 inclusive.
+
+   Bits 5-10: Minutes, valid value range 0-59 inclusive.
+
+   Bits 0-4: 2-second count, valid value range 0-29 inclusive (0 - 58 seconds).
+
+   The valid time range is from Midnight 00:00:00 to 23:59:58.
+*/
+struct directoryEntry {
+  /**
+     Short 8.3 name.
+     The first eight bytes contain the file name with blank fill.
+     The last three bytes contain the file extension with blank fill.
+  */
+  uint8_t  name[11];
+  /** Entry attributes.
+
+     The upper two bits of the attribute byte are reserved and should
+     always be set to 0 when a file is created and never modified or
+     looked at after that.  See defines that begin with DIR_ATT_.
+  */
+  uint8_t  attributes;
+  /**
+     Reserved for use by Windows NT. Set value to 0 when a file is
+     created and never modify or look at it after that.
+  */
+  uint8_t  reservedNT;
+  /**
+     The granularity of the seconds part of creationTime is 2 seconds
+     so this field is a count of tenths of a second and its valid
+     value range is 0-199 inclusive. (WHG note - seems to be hundredths)
+  */
+  uint8_t  creationTimeTenths;
+  /** Time file was created. */
+  uint16_t creationTime;
+  /** Date file was created. */
+  uint16_t creationDate;
+  /**
+     Last access date. Note that there is no last access time, only
+     a date.  This is the date of last read or write. In the case of
+     a write, this should be set to the same date as lastWriteDate.
+  */
+  uint16_t lastAccessDate;
+  /**
+     High word of this entry's first cluster number (always 0 for a
+     FAT12 or FAT16 volume).
+  */
+  uint16_t firstClusterHigh;
+  /** Time of last write. File creation is considered a write. */
+  uint16_t lastWriteTime;
+  /** Date of last write. File creation is considered a write. */
+  uint16_t lastWriteDate;
+  /** Low word of this entry's first cluster number. */
+  uint16_t firstClusterLow;
+  /** 32-bit unsigned holding this file's size in bytes. */
+  uint32_t fileSize;
+} __attribute__((packed));
+//------------------------------------------------------------------------------
+// Definitions for directory entries
+//
+/** Type name for directoryEntry */
+typedef struct directoryEntry dir_t;
+/** escape for name[0] = 0XE5 */
+uint8_t const DIR_NAME_0XE5 = 0X05;
+/** name[0] value for entry that is free after being "deleted" */
+uint8_t const DIR_NAME_DELETED = 0XE5;
+/** name[0] value for entry that is free and no allocated entries follow */
+uint8_t const DIR_NAME_FREE = 0X00;
+/** file is read-only */
+uint8_t const DIR_ATT_READ_ONLY = 0X01;
+/** File should hidden in directory listings */
+uint8_t const DIR_ATT_HIDDEN = 0X02;
+/** Entry is for a system file */
+uint8_t const DIR_ATT_SYSTEM = 0X04;
+/** Directory entry contains the volume label */
+uint8_t const DIR_ATT_VOLUME_ID = 0X08;
+/** Entry is for a directory */
+uint8_t const DIR_ATT_DIRECTORY = 0X10;
+/** Old DOS archive bit for backup support */
+uint8_t const DIR_ATT_ARCHIVE = 0X20;
+/** Test value for long name entry.  Test is
+  (d->attributes & DIR_ATT_LONG_NAME_MASK) == DIR_ATT_LONG_NAME. */
+uint8_t const DIR_ATT_LONG_NAME = 0X0F;
+/** Test mask for long name entry */
+uint8_t const DIR_ATT_LONG_NAME_MASK = 0X3F;
+/** defined attribute bits */
+uint8_t const DIR_ATT_DEFINED_BITS = 0X3F;
+/** Directory entry is part of a long name */
+static inline uint8_t DIR_IS_LONG_NAME(const dir_t* dir) {
+  return (dir->attributes & DIR_ATT_LONG_NAME_MASK) == DIR_ATT_LONG_NAME;
+}
+/** Mask for file/subdirectory tests */
+uint8_t const DIR_ATT_FILE_TYPE_MASK = (DIR_ATT_VOLUME_ID | DIR_ATT_DIRECTORY);
+/** Directory entry is for a file */
+static inline uint8_t DIR_IS_FILE(const dir_t* dir) {
+  return (dir->attributes & DIR_ATT_FILE_TYPE_MASK) == 0;
+}
+/** Directory entry is for a subdirectory */
+static inline uint8_t DIR_IS_SUBDIR(const dir_t* dir) {
+  return (dir->attributes & DIR_ATT_FILE_TYPE_MASK) == DIR_ATT_DIRECTORY;
+}
+/** Directory entry is for a file or subdirectory */
+static inline uint8_t DIR_IS_FILE_OR_SUBDIR(const dir_t* dir) {
+  return (dir->attributes & DIR_ATT_VOLUME_ID) == 0;
+}
+#endif  // FatStructs_h
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2Card.cpp 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2Card.cpp
new file mode 100644
index 000000000..7cfbe73ee
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2Card.cpp
@@ -0,0 +1,777 @@
+/* Arduino Sd2Card Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino Sd2Card Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino Sd2Card Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#define USE_SPI_LIB
+#include <Arduino.h>
+#include "Sd2Card.h"
+//------------------------------------------------------------------------------
+#ifndef SOFTWARE_SPI
+#ifdef USE_SPI_LIB
+
+  #ifndef SDCARD_SPI
+    #define SDCARD_SPI SPI
+  #endif
+
+  #include <SPI.h>
+  static SPISettings settings;
+#endif
+// functions for hardware SPI
+/** Send a byte to the card */
+static void spiSend(uint8_t b) {
+  #ifndef USE_SPI_LIB
+  SPDR = b;
+  while (!(SPSR & (1 << SPIF)))
+    ;
+  #else
+  SDCARD_SPI.transfer(b);
+  #endif
+}
+/** Receive a byte from the card */
+static  uint8_t spiRec(void) {
+  #ifndef USE_SPI_LIB
+  spiSend(0XFF);
+  return SPDR;
+  #else
+  return SDCARD_SPI.transfer(0xFF);
+  #endif
+}
+#else  // SOFTWARE_SPI
+//------------------------------------------------------------------------------
+/** nop to tune soft SPI timing */
+#define nop asm volatile ("nop\n\t")
+//------------------------------------------------------------------------------
+/** Soft SPI receive */
+uint8_t spiRec(void) {
+  uint8_t data = 0;
+  // no interrupts during byte receive - about 8 us
+  cli();
+  // output pin high - like sending 0XFF
+  fastDigitalWrite(SPI_MOSI_PIN, HIGH);
+
+  for (uint8_t i = 0; i < 8; i++) {
+    fastDigitalWrite(SPI_SCK_PIN, HIGH);
+
+    // adjust so SCK is nice
+    nop;
+    nop;
+
+    data <<= 1;
+
+    if (fastDigitalRead(SPI_MISO_PIN)) {
+      data |= 1;
+    }
+
+    fastDigitalWrite(SPI_SCK_PIN, LOW);
+  }
+  // enable interrupts
+  sei();
+  return data;
+}
+//------------------------------------------------------------------------------
+/** Soft SPI send */
+void spiSend(uint8_t data) {
+  // no interrupts during byte send - about 8 us
+  cli();
+  for (uint8_t i = 0; i < 8; i++) {
+    fastDigitalWrite(SPI_SCK_PIN, LOW);
+
+    fastDigitalWrite(SPI_MOSI_PIN, data & 0X80);
+
+    data <<= 1;
+
+    fastDigitalWrite(SPI_SCK_PIN, HIGH);
+  }
+  // hold SCK high for a few ns
+  nop;
+  nop;
+  nop;
+  nop;
+
+  fastDigitalWrite(SPI_SCK_PIN, LOW);
+  // enable interrupts
+  sei();
+}
+#endif  // SOFTWARE_SPI
+//------------------------------------------------------------------------------
+// send command and return error code.  Return zero for OK
+uint8_t Sd2Card::cardCommand(uint8_t cmd, uint32_t arg) {
+  // end read if in partialBlockRead mode
+  readEnd();
+
+  // select card
+  chipSelectLow();
+
+  // wait up to 300 ms if busy
+  waitNotBusy(300);
+
+  // send command
+  spiSend(cmd | 0x40);
+
+  // send argument
+  for (int8_t s = 24; s >= 0; s -= 8) {
+    spiSend(arg >> s);
+  }
+
+  // send CRC
+  uint8_t crc = 0XFF;
+  if (cmd == CMD0) {
+    crc = 0X95;  // correct crc for CMD0 with arg 0
+  }
+  if (cmd == CMD8) {
+    crc = 0X87;  // correct crc for CMD8 with arg 0X1AA
+  }
+  spiSend(crc);
+
+  // wait for response
+  for (uint8_t i = 0; ((status_ = spiRec()) & 0X80) && i != 0XFF; i++)
+    ;
+  return status_;
+}
+//------------------------------------------------------------------------------
+/**
+   Determine the size of an SD flash memory card.
+
+   \return The number of 512 byte data blocks in the card
+           or zero if an error occurs.
+*/
+uint32_t Sd2Card::cardSize(void) {
+  csd_t csd;
+  if (!readCSD(&csd)) {
+    return 0;
+  }
+  if (csd.v1.csd_ver == 0) {
+    uint8_t read_bl_len = csd.v1.read_bl_len;
+    uint16_t c_size = (csd.v1.c_size_high << 10)
+                      | (csd.v1.c_size_mid << 2) | csd.v1.c_size_low;
+    uint8_t c_size_mult = (csd.v1.c_size_mult_high << 1)
+                          | csd.v1.c_size_mult_low;
+    return (uint32_t)(c_size + 1) << (c_size_mult + read_bl_len - 7);
+  } else if (csd.v2.csd_ver == 1) {
+    uint32_t c_size = ((uint32_t)csd.v2.c_size_high << 16)
+                      | (csd.v2.c_size_mid << 8) | csd.v2.c_size_low;
+    return (c_size + 1) << 10;
+  } else {
+    error(SD_CARD_ERROR_BAD_CSD);
+    return 0;
+  }
+}
+//------------------------------------------------------------------------------
+static uint8_t chip_select_asserted = 0;
+
+void Sd2Card::chipSelectHigh(void) {
+  digitalWrite(chipSelectPin_, HIGH);
+  #ifdef USE_SPI_LIB
+  if (chip_select_asserted) {
+    chip_select_asserted = 0;
+    SDCARD_SPI.endTransaction();
+  }
+  #endif
+}
+//------------------------------------------------------------------------------
+void Sd2Card::chipSelectLow(void) {
+  #ifdef USE_SPI_LIB
+  if (!chip_select_asserted) {
+    chip_select_asserted = 1;
+    SDCARD_SPI.beginTransaction(settings);
+  }
+  #endif
+  digitalWrite(chipSelectPin_, LOW);
+}
+//------------------------------------------------------------------------------
+/** Erase a range of blocks.
+
+   \param[in] firstBlock The address of the first block in the range.
+   \param[in] lastBlock The address of the last block in the range.
+
+   \note This function requests the SD card to do a flash erase for a
+   range of blocks.  The data on the card after an erase operation is
+   either 0 or 1, depends on the card vendor.  The card must support
+   single block erase.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t Sd2Card::erase(uint32_t firstBlock, uint32_t lastBlock) {
+  if (!eraseSingleBlockEnable()) {
+    error(SD_CARD_ERROR_ERASE_SINGLE_BLOCK);
+    goto fail;
+  }
+  if (type_ != SD_CARD_TYPE_SDHC) {
+    firstBlock <<= 9;
+    lastBlock <<= 9;
+  }
+  if (cardCommand(CMD32, firstBlock)
+      || cardCommand(CMD33, lastBlock)
+      || cardCommand(CMD38, 0)) {
+    error(SD_CARD_ERROR_ERASE);
+    goto fail;
+  }
+  if (!waitNotBusy(SD_ERASE_TIMEOUT)) {
+    error(SD_CARD_ERROR_ERASE_TIMEOUT);
+    goto fail;
+  }
+  chipSelectHigh();
+  return true;
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/** Determine if card supports single block erase.
+
+   \return The value one, true, is returned if single block erase is supported.
+   The value zero, false, is returned if single block erase is not supported.
+*/
+uint8_t Sd2Card::eraseSingleBlockEnable(void) {
+  csd_t csd;
+  return readCSD(&csd) ? csd.v1.erase_blk_en : 0;
+}
+//------------------------------------------------------------------------------
+/**
+   Initialize an SD flash memory card.
+
+   \param[in] sckRateID SPI clock rate selector. See setSckRate().
+   \param[in] chipSelectPin SD chip select pin number.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.  The reason for failure
+   can be determined by calling errorCode() and errorData().
+*/
+uint8_t Sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin) {
+  errorCode_ = inBlock_ = partialBlockRead_ = type_ = 0;
+  chipSelectPin_ = chipSelectPin;
+  // 16-bit init start time allows over a minute
+  unsigned int t0 = millis();
+  uint32_t arg;
+
+  // set pin modes
+  pinMode(chipSelectPin_, OUTPUT);
+  digitalWrite(chipSelectPin_, HIGH);
+  #ifndef USE_SPI_LIB
+  pinMode(SPI_MISO_PIN, INPUT);
+  pinMode(SPI_MOSI_PIN, OUTPUT);
+  pinMode(SPI_SCK_PIN, OUTPUT);
+  #endif
+
+  #ifndef SOFTWARE_SPI
+  #ifndef USE_SPI_LIB
+  // SS must be in output mode even it is not chip select
+  pinMode(SS_PIN, OUTPUT);
+  digitalWrite(SS_PIN, HIGH); // disable any SPI device using hardware SS pin
+  // Enable SPI, Master, clock rate f_osc/128
+  SPCR = (1 << SPE) | (1 << MSTR) | (1 << SPR1) | (1 << SPR0);
+  // clear double speed
+  SPSR &= ~(1 << SPI2X);
+  #else // USE_SPI_LIB
+  SDCARD_SPI.begin();
+  settings = SPISettings(250000, MSBFIRST, SPI_MODE0);
+  #endif // USE_SPI_LIB
+  #endif // SOFTWARE_SPI
+
+  // must supply min of 74 clock cycles with CS high.
+  #ifdef USE_SPI_LIB
+  SDCARD_SPI.beginTransaction(settings);
+  #endif
+  for (uint8_t i = 0; i < 10; i++) {
+    spiSend(0XFF);
+  }
+  #ifdef USE_SPI_LIB
+  SDCARD_SPI.endTransaction();
+  #endif
+
+  chipSelectLow();
+
+  // command to go idle in SPI mode
+  while ((status_ = cardCommand(CMD0, 0)) != R1_IDLE_STATE) {
+    unsigned int d = millis() - t0;
+    if (d > SD_INIT_TIMEOUT) {
+      error(SD_CARD_ERROR_CMD0);
+      goto fail;
+    }
+  }
+  // check SD version
+  if ((cardCommand(CMD8, 0x1AA) & R1_ILLEGAL_COMMAND)) {
+    type(SD_CARD_TYPE_SD1);
+  } else {
+    // only need last byte of r7 response
+    for (uint8_t i = 0; i < 4; i++) {
+      status_ = spiRec();
+    }
+    if (status_ != 0XAA) {
+      error(SD_CARD_ERROR_CMD8);
+      goto fail;
+    }
+    type(SD_CARD_TYPE_SD2);
+  }
+  // initialize card and send host supports SDHC if SD2
+  arg = type() == SD_CARD_TYPE_SD2 ? 0X40000000 : 0;
+
+  while ((status_ = cardAcmd(ACMD41, arg)) != R1_READY_STATE) {
+    // check for timeout
+    unsigned int d = millis() - t0;
+    if (d > SD_INIT_TIMEOUT) {
+      error(SD_CARD_ERROR_ACMD41);
+      goto fail;
+    }
+  }
+  // if SD2 read OCR register to check for SDHC card
+  if (type() == SD_CARD_TYPE_SD2) {
+    if (cardCommand(CMD58, 0)) {
+      error(SD_CARD_ERROR_CMD58);
+      goto fail;
+    }
+    if ((spiRec() & 0XC0) == 0XC0) {
+      type(SD_CARD_TYPE_SDHC);
+    }
+    // discard rest of ocr - contains allowed voltage range
+    for (uint8_t i = 0; i < 3; i++) {
+      spiRec();
+    }
+  }
+  chipSelectHigh();
+
+  #ifndef SOFTWARE_SPI
+  return setSckRate(sckRateID);
+  #else  // SOFTWARE_SPI
+  return true;
+  #endif  // SOFTWARE_SPI
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/**
+   Enable or disable partial block reads.
+
+   Enabling partial block reads improves performance by allowing a block
+   to be read over the SPI bus as several sub-blocks.  Errors may occur
+   if the time between reads is too long since the SD card may timeout.
+   The SPI SS line will be held low until the entire block is read or
+   readEnd() is called.
+
+   Use this for applications like the Adafruit Wave Shield.
+
+   \param[in] value The value TRUE (non-zero) or FALSE (zero).)
+*/
+void Sd2Card::partialBlockRead(uint8_t value) {
+  readEnd();
+  partialBlockRead_ = value;
+}
+//------------------------------------------------------------------------------
+/**
+   Read a 512 byte block from an SD card device.
+
+   \param[in] block Logical block to be read.
+   \param[out] dst Pointer to the location that will receive the data.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t Sd2Card::readBlock(uint32_t block, uint8_t* dst) {
+  return readData(block, 0, 512, dst);
+}
+//------------------------------------------------------------------------------
+/**
+   Read part of a 512 byte block from an SD card.
+
+   \param[in] block Logical block to be read.
+   \param[in] offset Number of bytes to skip at start of block
+   \param[out] dst Pointer to the location that will receive the data.
+   \param[in] count Number of bytes to read
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t Sd2Card::readData(uint32_t block,
+                          uint16_t offset, uint16_t count, uint8_t* dst) {
+  if (count == 0) {
+    return true;
+  }
+  if ((count + offset) > 512) {
+    goto fail;
+  }
+  if (!inBlock_ || block != block_ || offset < offset_) {
+    block_ = block;
+    // use address if not SDHC card
+    if (type() != SD_CARD_TYPE_SDHC) {
+      block <<= 9;
+    }
+    if (cardCommand(CMD17, block)) {
+      error(SD_CARD_ERROR_CMD17);
+      goto fail;
+    }
+    if (!waitStartBlock()) {
+      goto fail;
+    }
+    offset_ = 0;
+    inBlock_ = 1;
+  }
+
+  #ifdef OPTIMIZE_HARDWARE_SPI
+  // start first spi transfer
+  SPDR = 0XFF;
+
+  // skip data before offset
+  for (; offset_ < offset; offset_++) {
+    while (!(SPSR & (1 << SPIF)))
+      ;
+    SPDR = 0XFF;
+  }
+  // transfer data
+  n = count - 1;
+  for (uint16_t i = 0; i < n; i++) {
+    while (!(SPSR & (1 << SPIF)))
+      ;
+    dst[i] = SPDR;
+    SPDR = 0XFF;
+  }
+  // wait for last byte
+  while (!(SPSR & (1 << SPIF)))
+    ;
+  dst[n] = SPDR;
+
+  #else  // OPTIMIZE_HARDWARE_SPI
+
+  // skip data before offset
+  for (; offset_ < offset; offset_++) {
+    spiRec();
+  }
+  // transfer data
+  for (uint16_t i = 0; i < count; i++) {
+    dst[i] = spiRec();
+  }
+  #endif  // OPTIMIZE_HARDWARE_SPI
+
+  offset_ += count;
+  if (!partialBlockRead_ || offset_ >= 512) {
+    // read rest of data, checksum and set chip select high
+    readEnd();
+  }
+  return true;
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/** Skip remaining data in a block when in partial block read mode. */
+void Sd2Card::readEnd(void) {
+  if (inBlock_) {
+    // skip data and crc
+    #ifdef OPTIMIZE_HARDWARE_SPI
+    // optimize skip for hardware
+    SPDR = 0XFF;
+    while (offset_++ < 513) {
+      while (!(SPSR & (1 << SPIF)))
+        ;
+      SPDR = 0XFF;
+    }
+    // wait for last crc byte
+    while (!(SPSR & (1 << SPIF)))
+      ;
+    #else  // OPTIMIZE_HARDWARE_SPI
+    while (offset_++ < 514) {
+      spiRec();
+    }
+    #endif  // OPTIMIZE_HARDWARE_SPI
+    chipSelectHigh();
+    inBlock_ = 0;
+  }
+}
+//------------------------------------------------------------------------------
+/** read CID or CSR register */
+uint8_t Sd2Card::readRegister(uint8_t cmd, void* buf) {
+  uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
+  if (cardCommand(cmd, 0)) {
+    error(SD_CARD_ERROR_READ_REG);
+    goto fail;
+  }
+  if (!waitStartBlock()) {
+    goto fail;
+  }
+  // transfer data
+  for (uint16_t i = 0; i < 16; i++) {
+    dst[i] = spiRec();
+  }
+  spiRec();  // get first crc byte
+  spiRec();  // get second crc byte
+  chipSelectHigh();
+  return true;
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/**
+   Set the SPI clock rate.
+
+   \param[in] sckRateID A value in the range [0, 6].
+
+   The SPI clock will be set to F_CPU/pow(2, 1 + sckRateID). The maximum
+   SPI rate is F_CPU/2 for \a sckRateID = 0 and the minimum rate is F_CPU/128
+   for \a scsRateID = 6.
+
+   \return The value one, true, is returned for success and the value zero,
+   false, is returned for an invalid value of \a sckRateID.
+*/
+uint8_t Sd2Card::setSckRate(uint8_t sckRateID) {
+  if (sckRateID > 6) {
+    error(SD_CARD_ERROR_SCK_RATE);
+    return false;
+  }
+  #ifndef USE_SPI_LIB
+  // see avr processor datasheet for SPI register bit definitions
+  if ((sckRateID & 1) || sckRateID == 6) {
+    SPSR &= ~(1 << SPI2X);
+  } else {
+    SPSR |= (1 << SPI2X);
+  }
+  SPCR &= ~((1 << SPR1) | (1 << SPR0));
+  SPCR |= (sckRateID & 4 ? (1 << SPR1) : 0)
+          | (sckRateID & 2 ? (1 << SPR0) : 0);
+  #else // USE_SPI_LIB
+  switch (sckRateID) {
+    case 0:  settings = SPISettings(25000000, MSBFIRST, SPI_MODE0); break;
+    case 1:  settings = SPISettings(4000000, MSBFIRST, SPI_MODE0); break;
+    case 2:  settings = SPISettings(2000000, MSBFIRST, SPI_MODE0); break;
+    case 3:  settings = SPISettings(1000000, MSBFIRST, SPI_MODE0); break;
+    case 4:  settings = SPISettings(500000, MSBFIRST, SPI_MODE0); break;
+    case 5:  settings = SPISettings(250000, MSBFIRST, SPI_MODE0); break;
+    default: settings = SPISettings(125000, MSBFIRST, SPI_MODE0);
+  }
+  #endif // USE_SPI_LIB
+  return true;
+}
+#ifdef USE_SPI_LIB
+//------------------------------------------------------------------------------
+// set the SPI clock frequency
+uint8_t Sd2Card::setSpiClock(uint32_t clock) {
+  settings = SPISettings(clock, MSBFIRST, SPI_MODE0);
+  return true;
+}
+#endif
+//------------------------------------------------------------------------------
+// wait for card to go not busy
+uint8_t Sd2Card::waitNotBusy(unsigned int timeoutMillis) {
+  unsigned int t0 = millis();
+  unsigned int d;
+  do {
+    if (spiRec() == 0XFF) {
+      return true;
+    }
+    d = millis() - t0;
+  } while (d < timeoutMillis);
+  return false;
+}
+//------------------------------------------------------------------------------
+/** Wait for start block token */
+uint8_t Sd2Card::waitStartBlock(void) {
+  unsigned int t0 = millis();
+  while ((status_ = spiRec()) == 0XFF) {
+    unsigned int d = millis() - t0;
+    if (d > SD_READ_TIMEOUT) {
+      error(SD_CARD_ERROR_READ_TIMEOUT);
+      goto fail;
+    }
+  }
+  if (status_ != DATA_START_BLOCK) {
+    error(SD_CARD_ERROR_READ);
+    goto fail;
+  }
+  return true;
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/**
+   Writes a 512 byte block to an SD card.
+
+   \param[in] blockNumber Logical block to be written.
+   \param[in] src Pointer to the location of the data to be written.
+   \param[in] blocking If the write should be blocking.
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t Sd2Card::writeBlock(uint32_t blockNumber, const uint8_t* src, uint8_t blocking) {
+  #if SD_PROTECT_BLOCK_ZERO
+  // don't allow write to first block
+  if (blockNumber == 0) {
+    error(SD_CARD_ERROR_WRITE_BLOCK_ZERO);
+    goto fail;
+  }
+  #endif  // SD_PROTECT_BLOCK_ZERO
+
+  // use address if not SDHC card
+  if (type() != SD_CARD_TYPE_SDHC) {
+    blockNumber <<= 9;
+  }
+  if (cardCommand(CMD24, blockNumber)) {
+    error(SD_CARD_ERROR_CMD24);
+    goto fail;
+  }
+  if (!writeData(DATA_START_BLOCK, src)) {
+    goto fail;
+  }
+  if (blocking) {
+    // wait for flash programming to complete
+    if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
+      error(SD_CARD_ERROR_WRITE_TIMEOUT);
+      goto fail;
+    }
+    // response is r2 so get and check two bytes for nonzero
+    if (cardCommand(CMD13, 0) || spiRec()) {
+      error(SD_CARD_ERROR_WRITE_PROGRAMMING);
+      goto fail;
+    }
+  }
+  chipSelectHigh();
+  return true;
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/** Write one data block in a multiple block write sequence */
+uint8_t Sd2Card::writeData(const uint8_t* src) {
+  // wait for previous write to finish
+  if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
+    error(SD_CARD_ERROR_WRITE_MULTIPLE);
+    chipSelectHigh();
+    return false;
+  }
+  return writeData(WRITE_MULTIPLE_TOKEN, src);
+}
+//------------------------------------------------------------------------------
+// send one block of data for write block or write multiple blocks
+uint8_t Sd2Card::writeData(uint8_t token, const uint8_t* src) {
+  #ifdef OPTIMIZE_HARDWARE_SPI
+
+  // send data - optimized loop
+  SPDR = token;
+
+  // send two byte per iteration
+  for (uint16_t i = 0; i < 512; i += 2) {
+    while (!(SPSR & (1 << SPIF)))
+      ;
+    SPDR = src[i];
+    while (!(SPSR & (1 << SPIF)))
+      ;
+    SPDR = src[i + 1];
+  }
+
+  // wait for last data byte
+  while (!(SPSR & (1 << SPIF)))
+    ;
+
+  #else  // OPTIMIZE_HARDWARE_SPI
+  spiSend(token);
+  for (uint16_t i = 0; i < 512; i++) {
+    spiSend(src[i]);
+  }
+  #endif  // OPTIMIZE_HARDWARE_SPI
+  spiSend(0xff);  // dummy crc
+  spiSend(0xff);  // dummy crc
+
+  status_ = spiRec();
+  if ((status_ & DATA_RES_MASK) != DATA_RES_ACCEPTED) {
+    error(SD_CARD_ERROR_WRITE);
+    chipSelectHigh();
+    return false;
+  }
+  return true;
+}
+//------------------------------------------------------------------------------
+/** Start a write multiple blocks sequence.
+
+   \param[in] blockNumber Address of first block in sequence.
+   \param[in] eraseCount The number of blocks to be pre-erased.
+
+   \note This function is used with writeData() and writeStop()
+   for optimized multiple block writes.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t Sd2Card::writeStart(uint32_t blockNumber, uint32_t eraseCount) {
+  #if SD_PROTECT_BLOCK_ZERO
+  // don't allow write to first block
+  if (blockNumber == 0) {
+    error(SD_CARD_ERROR_WRITE_BLOCK_ZERO);
+    goto fail;
+  }
+  #endif  // SD_PROTECT_BLOCK_ZERO
+  // send pre-erase count
+  if (cardAcmd(ACMD23, eraseCount)) {
+    error(SD_CARD_ERROR_ACMD23);
+    goto fail;
+  }
+  // use address if not SDHC card
+  if (type() != SD_CARD_TYPE_SDHC) {
+    blockNumber <<= 9;
+  }
+  if (cardCommand(CMD25, blockNumber)) {
+    error(SD_CARD_ERROR_CMD25);
+    goto fail;
+  }
+  return true;
+
+fail:
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/** End a write multiple blocks sequence.
+
+  \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t Sd2Card::writeStop(void) {
+  if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
+    goto fail;
+  }
+  spiSend(STOP_TRAN_TOKEN);
+  if (!waitNotBusy(SD_WRITE_TIMEOUT)) {
+    goto fail;
+  }
+  chipSelectHigh();
+  return true;
+
+fail:
+  error(SD_CARD_ERROR_STOP_TRAN);
+  chipSelectHigh();
+  return false;
+}
+//------------------------------------------------------------------------------
+/** Check if the SD card is busy
+
+  \return The value one, true, is returned when is busy and
+   the value zero, false, is returned for when is NOT busy.
+*/
+uint8_t Sd2Card::isBusy(void) {
+  chipSelectLow();
+  byte b = spiRec();
+  chipSelectHigh();
+
+  return (b != 0XFF);
+}
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2Card.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2Card.h
new file mode 100644
index 000000000..5d91ebf51
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2Card.h
@@ -0,0 +1,273 @@
+/* Arduino Sd2Card Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino Sd2Card Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino Sd2Card Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#ifndef Sd2Card_h
+#define Sd2Card_h
+/**
+   \file
+   Sd2Card class
+*/
+#include "Sd2PinMap.h"
+#include "SdInfo.h"
+/** Set SCK to max rate of F_CPU/2. See Sd2Card::setSckRate(). */
+uint8_t const SPI_FULL_SPEED = 0;
+/** Set SCK rate to F_CPU/4. See Sd2Card::setSckRate(). */
+uint8_t const SPI_HALF_SPEED = 1;
+/** Set SCK rate to F_CPU/8. Sd2Card::setSckRate(). */
+uint8_t const SPI_QUARTER_SPEED = 2;
+/**
+   USE_SPI_LIB: if set, use the SPI library bundled with Arduino IDE, otherwise
+   run with a standalone driver for AVR.
+*/
+#define USE_SPI_LIB
+/**
+   Define MEGA_SOFT_SPI non-zero to use software SPI on Mega Arduinos.
+   Pins used are SS 10, MOSI 11, MISO 12, and SCK 13.
+
+   MEGA_SOFT_SPI allows an unmodified Adafruit GPS Shield to be used
+   on Mega Arduinos.  Software SPI works well with GPS Shield V1.1
+   but many SD cards will fail with GPS Shield V1.0.
+*/
+#define MEGA_SOFT_SPI 0
+//------------------------------------------------------------------------------
+#if MEGA_SOFT_SPI && (defined(__AVR_ATmega1280__)||defined(__AVR_ATmega2560__))
+  #define SOFTWARE_SPI
+#endif  // MEGA_SOFT_SPI
+//------------------------------------------------------------------------------
+// SPI pin definitions
+//
+#ifndef SOFTWARE_SPI
+  // hardware pin defs
+
+  // include pins_arduino.h or variant.h depending on architecture, via Arduino.h
+  #include <Arduino.h>
+
+  /**
+  SD Chip Select pin
+
+  Warning if this pin is redefined the hardware SS will pin will be enabled
+  as an output by init().  An avr processor will not function as an SPI
+  master unless SS is set to output mode.
+  */
+  #ifndef SDCARD_SS_PIN
+    /** The default chip select pin for the SD card is SS. */
+    uint8_t const  SD_CHIP_SELECT_PIN = SS;
+  #else
+    uint8_t const  SD_CHIP_SELECT_PIN = SDCARD_SS_PIN;
+  #endif
+
+  // The following three pins must not be redefined for hardware SPI,
+  // so ensure that they are taken from pins_arduino.h or variant.h, depending on architecture.
+  #ifndef SDCARD_MOSI_PIN
+    /** SPI Master Out Slave In pin */
+    uint8_t const  SPI_MOSI_PIN = MOSI;
+    /** SPI Master In Slave Out pin */
+    uint8_t const  SPI_MISO_PIN = MISO;
+    /** SPI Clock pin */
+    uint8_t const  SPI_SCK_PIN = SCK;
+  #else
+    uint8_t const  SPI_MOSI_PIN = SDCARD_MOSI_PIN;
+    uint8_t const  SPI_MISO_PIN = SDCARD_MISO_PIN;
+    uint8_t const  SPI_SCK_PIN = SDCARD_SCK_PIN;
+  #endif
+
+  /** optimize loops for hardware SPI */
+  #ifndef USE_SPI_LIB
+    #define OPTIMIZE_HARDWARE_SPI
+  #endif
+
+#else  // SOFTWARE_SPI
+  // define software SPI pins so Mega can use unmodified GPS Shield
+  /** SPI chip select pin */
+  uint8_t const SD_CHIP_SELECT_PIN = 10;
+  /** SPI Master Out Slave In pin */
+  uint8_t const SPI_MOSI_PIN = 11;
+  /** SPI Master In Slave Out pin */
+  uint8_t const SPI_MISO_PIN = 12;
+  /** SPI Clock pin */
+  uint8_t const SPI_SCK_PIN = 13;
+#endif  // SOFTWARE_SPI
+//------------------------------------------------------------------------------
+/** Protect block zero from write if nonzero */
+#define SD_PROTECT_BLOCK_ZERO 1
+/** init timeout ms */
+unsigned int const SD_INIT_TIMEOUT = 2000;
+/** erase timeout ms */
+unsigned int const SD_ERASE_TIMEOUT = 10000;
+/** read timeout ms */
+unsigned int const SD_READ_TIMEOUT = 300;
+/** write time out ms */
+unsigned int const SD_WRITE_TIMEOUT = 600;
+//------------------------------------------------------------------------------
+// SD card errors
+/** timeout error for command CMD0 */
+uint8_t const SD_CARD_ERROR_CMD0 = 0X1;
+/** CMD8 was not accepted - not a valid SD card*/
+uint8_t const SD_CARD_ERROR_CMD8 = 0X2;
+/** card returned an error response for CMD17 (read block) */
+uint8_t const SD_CARD_ERROR_CMD17 = 0X3;
+/** card returned an error response for CMD24 (write block) */
+uint8_t const SD_CARD_ERROR_CMD24 = 0X4;
+/**  WRITE_MULTIPLE_BLOCKS command failed */
+uint8_t const SD_CARD_ERROR_CMD25 = 0X05;
+/** card returned an error response for CMD58 (read OCR) */
+uint8_t const SD_CARD_ERROR_CMD58 = 0X06;
+/** SET_WR_BLK_ERASE_COUNT failed */
+uint8_t const SD_CARD_ERROR_ACMD23 = 0X07;
+/** card's ACMD41 initialization process timeout */
+uint8_t const SD_CARD_ERROR_ACMD41 = 0X08;
+/** card returned a bad CSR version field */
+uint8_t const SD_CARD_ERROR_BAD_CSD = 0X09;
+/** erase block group command failed */
+uint8_t const SD_CARD_ERROR_ERASE = 0X0A;
+/** card not capable of single block erase */
+uint8_t const SD_CARD_ERROR_ERASE_SINGLE_BLOCK = 0X0B;
+/** Erase sequence timed out */
+uint8_t const SD_CARD_ERROR_ERASE_TIMEOUT = 0X0C;
+/** card returned an error token instead of read data */
+uint8_t const SD_CARD_ERROR_READ = 0X0D;
+/** read CID or CSD failed */
+uint8_t const SD_CARD_ERROR_READ_REG = 0X0E;
+/** timeout while waiting for start of read data */
+uint8_t const SD_CARD_ERROR_READ_TIMEOUT = 0X0F;
+/** card did not accept STOP_TRAN_TOKEN */
+uint8_t const SD_CARD_ERROR_STOP_TRAN = 0X10;
+/** card returned an error token as a response to a write operation */
+uint8_t const SD_CARD_ERROR_WRITE = 0X11;
+/** attempt to write protected block zero */
+uint8_t const SD_CARD_ERROR_WRITE_BLOCK_ZERO = 0X12;
+/** card did not go ready for a multiple block write */
+uint8_t const SD_CARD_ERROR_WRITE_MULTIPLE = 0X13;
+/** card returned an error to a CMD13 status check after a write */
+uint8_t const SD_CARD_ERROR_WRITE_PROGRAMMING = 0X14;
+/** timeout occurred during write programming */
+uint8_t const SD_CARD_ERROR_WRITE_TIMEOUT = 0X15;
+/** incorrect rate selected */
+uint8_t const SD_CARD_ERROR_SCK_RATE = 0X16;
+//------------------------------------------------------------------------------
+// card types
+/** Standard capacity V1 SD card */
+uint8_t const SD_CARD_TYPE_SD1 = 1;
+/** Standard capacity V2 SD card */
+uint8_t const SD_CARD_TYPE_SD2 = 2;
+/** High Capacity SD card */
+uint8_t const SD_CARD_TYPE_SDHC = 3;
+//------------------------------------------------------------------------------
+/**
+   \class Sd2Card
+   \brief Raw access to SD and SDHC flash memory cards.
+*/
+class Sd2Card {
+  public:
+    /** Construct an instance of Sd2Card. */
+    Sd2Card(void) : errorCode_(0), inBlock_(0), partialBlockRead_(0), type_(0) {}
+    uint32_t cardSize(void);
+    uint8_t erase(uint32_t firstBlock, uint32_t lastBlock);
+    uint8_t eraseSingleBlockEnable(void);
+    /**
+       \return error code for last error. See Sd2Card.h for a list of error codes.
+    */
+    uint8_t errorCode(void) const {
+      return errorCode_;
+    }
+    /** \return error data for last error. */
+    uint8_t errorData(void) const {
+      return status_;
+    }
+    /**
+       Initialize an SD flash memory card with default clock rate and chip
+       select pin.  See sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin).
+    */
+    uint8_t init(void) {
+      return init(SPI_FULL_SPEED, SD_CHIP_SELECT_PIN);
+    }
+    /**
+       Initialize an SD flash memory card with the selected SPI clock rate
+       and the default SD chip select pin.
+       See sd2Card::init(uint8_t sckRateID, uint8_t chipSelectPin).
+    */
+    uint8_t init(uint8_t sckRateID) {
+      return init(sckRateID, SD_CHIP_SELECT_PIN);
+    }
+    uint8_t init(uint8_t sckRateID, uint8_t chipSelectPin);
+    void partialBlockRead(uint8_t value);
+    /** Returns the current value, true or false, for partial block read. */
+    uint8_t partialBlockRead(void) const {
+      return partialBlockRead_;
+    }
+    uint8_t readBlock(uint32_t block, uint8_t* dst);
+    uint8_t readData(uint32_t block,
+                     uint16_t offset, uint16_t count, uint8_t* dst);
+    /**
+       Read a cards CID register. The CID contains card identification
+       information such as Manufacturer ID, Product name, Product serial
+       number and Manufacturing date. */
+    uint8_t readCID(cid_t* cid) {
+      return readRegister(CMD10, cid);
+    }
+    /**
+       Read a cards CSD register. The CSD contains Card-Specific Data that
+       provides information regarding access to the card's contents. */
+    uint8_t readCSD(csd_t* csd) {
+      return readRegister(CMD9, csd);
+    }
+    void readEnd(void);
+    uint8_t setSckRate(uint8_t sckRateID);
+    #ifdef USE_SPI_LIB
+    uint8_t setSpiClock(uint32_t clock);
+    #endif
+    /** Return the card type: SD V1, SD V2 or SDHC */
+    uint8_t type(void) const {
+      return type_;
+    }
+    uint8_t writeBlock(uint32_t blockNumber, const uint8_t* src, uint8_t blocking = 1);
+    uint8_t writeData(const uint8_t* src);
+    uint8_t writeStart(uint32_t blockNumber, uint32_t eraseCount);
+    uint8_t writeStop(void);
+    uint8_t isBusy(void);
+  private:
+    uint32_t block_;
+    uint8_t chipSelectPin_;
+    uint8_t errorCode_;
+    uint8_t inBlock_;
+    uint16_t offset_;
+    uint8_t partialBlockRead_;
+    uint8_t status_;
+    uint8_t type_;
+    // private functions
+    uint8_t cardAcmd(uint8_t cmd, uint32_t arg) {
+      cardCommand(CMD55, 0);
+      return cardCommand(cmd, arg);
+    }
+    uint8_t cardCommand(uint8_t cmd, uint32_t arg);
+    void error(uint8_t code) {
+      errorCode_ = code;
+    }
+    uint8_t readRegister(uint8_t cmd, void* buf);
+    uint8_t sendWriteCommand(uint32_t blockNumber, uint32_t eraseCount);
+    void chipSelectHigh(void);
+    void chipSelectLow(void);
+    void type(uint8_t value) {
+      type_ = value;
+    }
+    uint8_t waitNotBusy(unsigned int timeoutMillis);
+    uint8_t writeData(uint8_t token, const uint8_t* src);
+    uint8_t waitStartBlock(void);
+};
+#endif  // Sd2Card_h
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2PinMap.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2PinMap.h
new file mode 100644
index 000000000..0609ffe33
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/Sd2PinMap.h
@@ -0,0 +1,525 @@
+/* Arduino SdFat Library
+   Copyright (C) 2010 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#if defined(__arm__) // Arduino Due Board follows
+
+#ifndef Sd2PinMap_h
+  #define Sd2PinMap_h
+
+  #include <Arduino.h>
+
+  uint8_t const SS_PIN = SS;
+  uint8_t const MOSI_PIN = MOSI;
+  uint8_t const MISO_PIN = MISO;
+  uint8_t const SCK_PIN = SCK;
+
+#endif // Sd2PinMap_h
+
+#elif defined(__AVR_ATmega4809__) // Arduino UNO WiFI Rev2 follows
+
+#ifndef Sd2PinMap_h
+  #define Sd2PinMap_h
+
+  #include <Arduino.h>
+
+  uint8_t const SS_PIN = SS;
+  uint8_t const MOSI_PIN = MOSI;
+  uint8_t const MISO_PIN = MISO;
+  uint8_t const SCK_PIN = SCK;
+
+#endif // Sd2PinMap_h
+
+#elif defined(__AVR__) // Other AVR based Boards follows
+
+// Warning this file was generated by a program.
+#ifndef Sd2PinMap_h
+#define Sd2PinMap_h
+#include <avr/io.h>
+
+//------------------------------------------------------------------------------
+/** struct for mapping digital pins */
+struct pin_map_t {
+  volatile uint8_t* ddr;
+  volatile uint8_t* pin;
+  volatile uint8_t* port;
+  uint8_t bit;
+};
+//------------------------------------------------------------------------------
+#if defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+// Mega
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 20;
+uint8_t const SCL_PIN = 21;
+
+// SPI port
+uint8_t const SS_PIN = 53;
+uint8_t const MOSI_PIN = 51;
+uint8_t const MISO_PIN = 50;
+uint8_t const SCK_PIN = 52;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRE, &PINE, &PORTE, 0},  // E0  0
+  {&DDRE, &PINE, &PORTE, 1},  // E1  1
+  {&DDRE, &PINE, &PORTE, 4},  // E4  2
+  {&DDRE, &PINE, &PORTE, 5},  // E5  3
+  {&DDRG, &PING, &PORTG, 5},  // G5  4
+  {&DDRE, &PINE, &PORTE, 3},  // E3  5
+  {&DDRH, &PINH, &PORTH, 3},  // H3  6
+  {&DDRH, &PINH, &PORTH, 4},  // H4  7
+  {&DDRH, &PINH, &PORTH, 5},  // H5  8
+  {&DDRH, &PINH, &PORTH, 6},  // H6  9
+  {&DDRB, &PINB, &PORTB, 4},  // B4 10
+  {&DDRB, &PINB, &PORTB, 5},  // B5 11
+  {&DDRB, &PINB, &PORTB, 6},  // B6 12
+  {&DDRB, &PINB, &PORTB, 7},  // B7 13
+  {&DDRJ, &PINJ, &PORTJ, 1},  // J1 14
+  {&DDRJ, &PINJ, &PORTJ, 0},  // J0 15
+  {&DDRH, &PINH, &PORTH, 1},  // H1 16
+  {&DDRH, &PINH, &PORTH, 0},  // H0 17
+  {&DDRD, &PIND, &PORTD, 3},  // D3 18
+  {&DDRD, &PIND, &PORTD, 2},  // D2 19
+  {&DDRD, &PIND, &PORTD, 1},  // D1 20
+  {&DDRD, &PIND, &PORTD, 0},  // D0 21
+  {&DDRA, &PINA, &PORTA, 0},  // A0 22
+  {&DDRA, &PINA, &PORTA, 1},  // A1 23
+  {&DDRA, &PINA, &PORTA, 2},  // A2 24
+  {&DDRA, &PINA, &PORTA, 3},  // A3 25
+  {&DDRA, &PINA, &PORTA, 4},  // A4 26
+  {&DDRA, &PINA, &PORTA, 5},  // A5 27
+  {&DDRA, &PINA, &PORTA, 6},  // A6 28
+  {&DDRA, &PINA, &PORTA, 7},  // A7 29
+  {&DDRC, &PINC, &PORTC, 7},  // C7 30
+  {&DDRC, &PINC, &PORTC, 6},  // C6 31
+  {&DDRC, &PINC, &PORTC, 5},  // C5 32
+  {&DDRC, &PINC, &PORTC, 4},  // C4 33
+  {&DDRC, &PINC, &PORTC, 3},  // C3 34
+  {&DDRC, &PINC, &PORTC, 2},  // C2 35
+  {&DDRC, &PINC, &PORTC, 1},  // C1 36
+  {&DDRC, &PINC, &PORTC, 0},  // C0 37
+  {&DDRD, &PIND, &PORTD, 7},  // D7 38
+  {&DDRG, &PING, &PORTG, 2},  // G2 39
+  {&DDRG, &PING, &PORTG, 1},  // G1 40
+  {&DDRG, &PING, &PORTG, 0},  // G0 41
+  {&DDRL, &PINL, &PORTL, 7},  // L7 42
+  {&DDRL, &PINL, &PORTL, 6},  // L6 43
+  {&DDRL, &PINL, &PORTL, 5},  // L5 44
+  {&DDRL, &PINL, &PORTL, 4},  // L4 45
+  {&DDRL, &PINL, &PORTL, 3},  // L3 46
+  {&DDRL, &PINL, &PORTL, 2},  // L2 47
+  {&DDRL, &PINL, &PORTL, 1},  // L1 48
+  {&DDRL, &PINL, &PORTL, 0},  // L0 49
+  {&DDRB, &PINB, &PORTB, 3},  // B3 50
+  {&DDRB, &PINB, &PORTB, 2},  // B2 51
+  {&DDRB, &PINB, &PORTB, 1},  // B1 52
+  {&DDRB, &PINB, &PORTB, 0},  // B0 53
+  {&DDRF, &PINF, &PORTF, 0},  // F0 54
+  {&DDRF, &PINF, &PORTF, 1},  // F1 55
+  {&DDRF, &PINF, &PORTF, 2},  // F2 56
+  {&DDRF, &PINF, &PORTF, 3},  // F3 57
+  {&DDRF, &PINF, &PORTF, 4},  // F4 58
+  {&DDRF, &PINF, &PORTF, 5},  // F5 59
+  {&DDRF, &PINF, &PORTF, 6},  // F6 60
+  {&DDRF, &PINF, &PORTF, 7},  // F7 61
+  {&DDRK, &PINK, &PORTK, 0},  // K0 62
+  {&DDRK, &PINK, &PORTK, 1},  // K1 63
+  {&DDRK, &PINK, &PORTK, 2},  // K2 64
+  {&DDRK, &PINK, &PORTK, 3},  // K3 65
+  {&DDRK, &PINK, &PORTK, 4},  // K4 66
+  {&DDRK, &PINK, &PORTK, 5},  // K5 67
+  {&DDRK, &PINK, &PORTK, 6},  // K6 68
+  {&DDRK, &PINK, &PORTK, 7}   // K7 69
+};
+//------------------------------------------------------------------------------
+#elif (defined(__AVR_ATmega644P__) || defined(__AVR_ATmega1284P__)) && defined(CORE_MICRODUINO)
+// Microduino Core+
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 20;
+uint8_t const SCL_PIN = 21;
+
+// SPI port
+uint8_t const SS_PIN = 10;
+uint8_t const MOSI_PIN = 11;
+uint8_t const MISO_PIN = 12;
+uint8_t const SCK_PIN = 13;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRD, &PIND, &PORTD, 0},  // D0 PD0
+  {&DDRD, &PIND, &PORTD, 1},  // D1 PD1
+  {&DDRD, &PIND, &PORTD, 2},  // D2 PD2
+  {&DDRD, &PIND, &PORTD, 3},  // D3 PD3
+  {&DDRB, &PINB, &PORTB, 0},  // D4 PB0
+  {&DDRB, &PINB, &PORTB, 1},  // D5 PB1
+  {&DDRB, &PINB, &PORTB, 2},  // D6 PB2
+  {&DDRB, &PINB, &PORTB, 3},  // D7 PB3
+  {&DDRD, &PIND, &PORTD, 6},  // D8 PD6
+  {&DDRD, &PIND, &PORTD, 5},  // D9 PD5
+  {&DDRB, &PINB, &PORTB, 4},  // D10 PB4
+  {&DDRB, &PINB, &PORTB, 5},  // D11 PB5
+  {&DDRB, &PINB, &PORTB, 6},  // D12 PB6
+  {&DDRB, &PINB, &PORTB, 7},  // D13 PB7
+  {&DDRC, &PINC, &PORTC, 7},  // D14 PC7
+  {&DDRC, &PINC, &PORTC, 6},  // D15 PC6
+  {&DDRC, &PINC, &PORTC, 5},  // D16 PC5
+  {&DDRC, &PINC, &PORTC, 4},  // D17 PC4
+  {&DDRC, &PINC, &PORTC, 3},  // D18 PC3
+  {&DDRC, &PINC, &PORTC, 2},  // D19 PC2
+  {&DDRC, &PINC, &PORTC, 1},  // D20 PC1
+  {&DDRC, &PINC, &PORTC, 0},  // D21 PC0
+  {&DDRD, &PIND, &PORTD, 4},  // D22 PD4
+  {&DDRD, &PIND, &PORTD, 7},  // D23 PD7
+  {&DDRA, &PINA, &PORTA, 7},  // D24 PA7
+  {&DDRA, &PINA, &PORTA, 6},  // D25 PA6
+  {&DDRA, &PINA, &PORTA, 5},  // D26 PA5
+  {&DDRA, &PINA, &PORTA, 4},  // D27 PA4
+  {&DDRA, &PINA, &PORTA, 3},  // D28 PA3
+  {&DDRA, &PINA, &PORTA, 2},  // D29 PA2
+  {&DDRA, &PINA, &PORTA, 1},  // D30 PA1
+  {&DDRA, &PINA, &PORTA, 0}   // D31 PA0
+};
+//------------------------------------------------------------------------------
+#elif defined(__AVR_ATmega128RFA1__) && defined(CORE_MICRODUINO)
+// Microduino Core RF
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 18;
+uint8_t const SCL_PIN = 19;
+
+// SPI port
+uint8_t const SS_PIN = 10;
+uint8_t const MOSI_PIN = 11;
+uint8_t const MISO_PIN = 12;
+uint8_t const SCK_PIN = 13;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRD, &PINE, &PORTE, 0},  // D0 PE0
+  {&DDRD, &PINE, &PORTE, 1},  // D1 PE1
+  {&DDRD, &PIND, &PORTD, 2},  // D2 PD2
+  {&DDRD, &PIND, &PORTD, 3},  // D3 PD3
+  {&DDRB, &PINE, &PORTE, 3},  // D4 PE3
+  {&DDRB, &PINE, &PORTE, 4},  // D5 PE4
+  {&DDRB, &PINE, &PORTE, 5},  // D6 PE5
+  {&DDRB, &PINB, &PORTB, 7},  // D7 PB7
+  {&DDRD, &PINB, &PORTB, 6},  // D8 PB6
+  {&DDRD, &PINB, &PORTB, 5},  // D9 PB5
+  {&DDRB, &PINB, &PORTB, 4},  // D10 PB4
+  {&DDRB, &PINB, &PORTB, 2},  // D11 PB2
+  {&DDRB, &PINB, &PORTB, 3},  // D12 PB3
+  {&DDRB, &PINB, &PORTB, 1},  // D13 PB1
+  {&DDRF, &PINF, &PORTF, 7},  // D14 PF7
+  {&DDRF, &PINF, &PORTF, 6},  // D15 PF6
+  {&DDRF, &PINF, &PORTF, 5},  // D16 PF5
+  {&DDRF, &PINF, &PORTF, 4},  // D17 PF4
+  {&DDRD, &PIND, &PORTD, 1},  // D18 PD1
+  {&DDRD, &PIND, &PORTD, 0},  // D19 PD0
+  {&DDRF, &PINF, &PORTF, 3},  // D20 PF3
+  {&DDRF, &PINF, &PORTF, 2},  // D21 PF2
+};
+//------------------------------------------------------------------------------
+#elif defined(__AVR_ATmega32U4__) && defined(CORE_MICRODUINO)
+// Microduino Core USB
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 18;
+uint8_t const SCL_PIN = 19;
+
+// SPI port
+uint8_t const SS_PIN = 10;
+uint8_t const MOSI_PIN = 11;
+uint8_t const MISO_PIN = 12;
+uint8_t const SCK_PIN = 13;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRD, &PIND, &PORTD, 2},  // D0 - PD2
+  {&DDRD, &PIND, &PORTD, 3},  // D1 - PD3
+  {&DDRE, &PINE, &PORTE, 6},  // D2 - PE6
+  {&DDRD, &PIND, &PORTD, 6},  // D3 - PD6
+  {&DDRD, &PIND, &PORTD, 7},  // D4 - PD7
+  {&DDRC, &PINC, &PORTC, 6},  // D5 - PC6
+  {&DDRC, &PINC, &PORTC, 7},  // D6 - PC7
+  {&DDRE, &PINE, &PORTE, 7},  // D7 - PE7
+  {&DDRB, &PINB, &PORTB, 6},  // D8 - PB6
+  {&DDRB, &PINB, &PORTB, 5},  // D9 - PB5
+  {&DDRB, &PINB, &PORTB, 0},  // D10 - PB0
+  {&DDRB, &PINB, &PORTB, 2},  // D11 - MOSI - PB2
+  {&DDRB, &PINB, &PORTB, 3},  // D12 -MISO -  PB3
+  {&DDRB, &PINB, &PORTB, 1},  // D13 -SCK -  PB1
+  {&DDRF, &PINF, &PORTF, 7},  // D14 - A0 - PF7
+  {&DDRF, &PINF, &PORTF, 6},  // D15 - A1 - PF6
+  {&DDRF, &PINF, &PORTF, 5},  // D16 - A2 - PF5
+  {&DDRF, &PINF, &PORTF, 4},  // D17 - A3 - PF4
+  {&DDRD, &PIND, &PORTD, 1},  // D18 - PD1
+  {&DDRD, &PIND, &PORTD, 0},  // D19 - PD0
+  {&DDRF, &PINF, &PORTF, 1},  // D20 - A6 - PF1
+  {&DDRF, &PINF, &PORTF, 0},  // D21 - A7 - PF0
+};
+//------------------------------------------------------------------------------
+#elif defined(__AVR_ATmega644P__) || defined(__AVR_ATmega644__)
+// Sanguino
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 17;
+uint8_t const SCL_PIN = 18;
+
+// SPI port
+uint8_t const SS_PIN = 4;
+uint8_t const MOSI_PIN = 5;
+uint8_t const MISO_PIN = 6;
+uint8_t const SCK_PIN = 7;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRB, &PINB, &PORTB, 0},  // B0  0
+  {&DDRB, &PINB, &PORTB, 1},  // B1  1
+  {&DDRB, &PINB, &PORTB, 2},  // B2  2
+  {&DDRB, &PINB, &PORTB, 3},  // B3  3
+  {&DDRB, &PINB, &PORTB, 4},  // B4  4
+  {&DDRB, &PINB, &PORTB, 5},  // B5  5
+  {&DDRB, &PINB, &PORTB, 6},  // B6  6
+  {&DDRB, &PINB, &PORTB, 7},  // B7  7
+  {&DDRD, &PIND, &PORTD, 0},  // D0  8
+  {&DDRD, &PIND, &PORTD, 1},  // D1  9
+  {&DDRD, &PIND, &PORTD, 2},  // D2 10
+  {&DDRD, &PIND, &PORTD, 3},  // D3 11
+  {&DDRD, &PIND, &PORTD, 4},  // D4 12
+  {&DDRD, &PIND, &PORTD, 5},  // D5 13
+  {&DDRD, &PIND, &PORTD, 6},  // D6 14
+  {&DDRD, &PIND, &PORTD, 7},  // D7 15
+  {&DDRC, &PINC, &PORTC, 0},  // C0 16
+  {&DDRC, &PINC, &PORTC, 1},  // C1 17
+  {&DDRC, &PINC, &PORTC, 2},  // C2 18
+  {&DDRC, &PINC, &PORTC, 3},  // C3 19
+  {&DDRC, &PINC, &PORTC, 4},  // C4 20
+  {&DDRC, &PINC, &PORTC, 5},  // C5 21
+  {&DDRC, &PINC, &PORTC, 6},  // C6 22
+  {&DDRC, &PINC, &PORTC, 7},  // C7 23
+  {&DDRA, &PINA, &PORTA, 7},  // A7 24
+  {&DDRA, &PINA, &PORTA, 6},  // A6 25
+  {&DDRA, &PINA, &PORTA, 5},  // A5 26
+  {&DDRA, &PINA, &PORTA, 4},  // A4 27
+  {&DDRA, &PINA, &PORTA, 3},  // A3 28
+  {&DDRA, &PINA, &PORTA, 2},  // A2 29
+  {&DDRA, &PINA, &PORTA, 1},  // A1 30
+  {&DDRA, &PINA, &PORTA, 0}   // A0 31
+};
+//------------------------------------------------------------------------------
+#elif defined(__AVR_ATmega32U4__)
+// Leonardo
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 2;
+uint8_t const SCL_PIN = 3;
+
+// SPI port
+uint8_t const SS_PIN = 17;
+uint8_t const MOSI_PIN = 16;
+uint8_t const MISO_PIN = 14;
+uint8_t const SCK_PIN = 15;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRD, &PIND, &PORTD, 2},  // D2  0
+  {&DDRD, &PIND, &PORTD, 3},  // D3  1
+  {&DDRD, &PIND, &PORTD, 1},  // D1  2
+  {&DDRD, &PIND, &PORTD, 0},  // D0  3
+  {&DDRD, &PIND, &PORTD, 4},  // D4  4
+  {&DDRC, &PINC, &PORTC, 6},  // C6  5
+  {&DDRD, &PIND, &PORTD, 7},  // D7  6
+  {&DDRE, &PINE, &PORTE, 6},  // E6  7
+  {&DDRB, &PINB, &PORTB, 4},  // B4  8
+  {&DDRB, &PINB, &PORTB, 5},  // B5  9
+  {&DDRB, &PINB, &PORTB, 6},  // B6 10
+  {&DDRB, &PINB, &PORTB, 7},  // B7 11
+  {&DDRD, &PIND, &PORTD, 6},  // D6 12
+  {&DDRC, &PINC, &PORTC, 7},  // C7 13
+  {&DDRB, &PINB, &PORTB, 3},  // B3 14
+  {&DDRB, &PINB, &PORTB, 1},  // B1 15
+  {&DDRB, &PINB, &PORTB, 2},  // B2 16
+  {&DDRB, &PINB, &PORTB, 0},  // B0 17
+  {&DDRF, &PINF, &PORTF, 7},  // F7 18
+  {&DDRF, &PINF, &PORTF, 6},  // F6 19
+  {&DDRF, &PINF, &PORTF, 5},  // F5 20
+  {&DDRF, &PINF, &PORTF, 4},  // F4 21
+  {&DDRF, &PINF, &PORTF, 1},  // F1 22
+  {&DDRF, &PINF, &PORTF, 0},  // F0 23
+};
+//------------------------------------------------------------------------------
+#elif defined(__AVR_AT90USB646__) || defined(__AVR_AT90USB1286__)
+// Teensy++ 1.0 & 2.0
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 1;
+uint8_t const SCL_PIN = 0;
+
+// SPI port
+uint8_t const SS_PIN = 20;
+uint8_t const MOSI_PIN = 22;
+uint8_t const MISO_PIN = 23;
+uint8_t const SCK_PIN = 21;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRD, &PIND, &PORTD, 0},  // D0  0
+  {&DDRD, &PIND, &PORTD, 1},  // D1  1
+  {&DDRD, &PIND, &PORTD, 2},  // D2  2
+  {&DDRD, &PIND, &PORTD, 3},  // D3  3
+  {&DDRD, &PIND, &PORTD, 4},  // D4  4
+  {&DDRD, &PIND, &PORTD, 5},  // D5  5
+  {&DDRD, &PIND, &PORTD, 6},  // D6  6
+  {&DDRD, &PIND, &PORTD, 7},  // D7  7
+  {&DDRE, &PINE, &PORTE, 0},  // E0  8
+  {&DDRE, &PINE, &PORTE, 1},  // E1  9
+  {&DDRC, &PINC, &PORTC, 0},  // C0 10
+  {&DDRC, &PINC, &PORTC, 1},  // C1 11
+  {&DDRC, &PINC, &PORTC, 2},  // C2 12
+  {&DDRC, &PINC, &PORTC, 3},  // C3 13
+  {&DDRC, &PINC, &PORTC, 4},  // C4 14
+  {&DDRC, &PINC, &PORTC, 5},  // C5 15
+  {&DDRC, &PINC, &PORTC, 6},  // C6 16
+  {&DDRC, &PINC, &PORTC, 7},  // C7 17
+  {&DDRE, &PINE, &PORTE, 6},  // E6 18
+  {&DDRE, &PINE, &PORTE, 7},  // E7 19
+  {&DDRB, &PINB, &PORTB, 0},  // B0 20
+  {&DDRB, &PINB, &PORTB, 1},  // B1 21
+  {&DDRB, &PINB, &PORTB, 2},  // B2 22
+  {&DDRB, &PINB, &PORTB, 3},  // B3 23
+  {&DDRB, &PINB, &PORTB, 4},  // B4 24
+  {&DDRB, &PINB, &PORTB, 5},  // B5 25
+  {&DDRB, &PINB, &PORTB, 6},  // B6 26
+  {&DDRB, &PINB, &PORTB, 7},  // B7 27
+  {&DDRA, &PINA, &PORTA, 0},  // A0 28
+  {&DDRA, &PINA, &PORTA, 1},  // A1 29
+  {&DDRA, &PINA, &PORTA, 2},  // A2 30
+  {&DDRA, &PINA, &PORTA, 3},  // A3 31
+  {&DDRA, &PINA, &PORTA, 4},  // A4 32
+  {&DDRA, &PINA, &PORTA, 5},  // A5 33
+  {&DDRA, &PINA, &PORTA, 6},  // A6 34
+  {&DDRA, &PINA, &PORTA, 7},  // A7 35
+  {&DDRE, &PINE, &PORTE, 4},  // E4 36
+  {&DDRE, &PINE, &PORTE, 5},  // E5 37
+  {&DDRF, &PINF, &PORTF, 0},  // F0 38
+  {&DDRF, &PINF, &PORTF, 1},  // F1 39
+  {&DDRF, &PINF, &PORTF, 2},  // F2 40
+  {&DDRF, &PINF, &PORTF, 3},  // F3 41
+  {&DDRF, &PINF, &PORTF, 4},  // F4 42
+  {&DDRF, &PINF, &PORTF, 5},  // F5 43
+  {&DDRF, &PINF, &PORTF, 6},  // F6 44
+  {&DDRF, &PINF, &PORTF, 7}   // F7 45
+};
+//------------------------------------------------------------------------------
+#else  // defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+// 168 and 328 Arduinos
+
+// Two Wire (aka I2C) ports
+uint8_t const SDA_PIN = 18;
+uint8_t const SCL_PIN = 19;
+
+// SPI port
+uint8_t const SS_PIN = 10;
+uint8_t const MOSI_PIN = 11;
+uint8_t const MISO_PIN = 12;
+uint8_t const SCK_PIN = 13;
+
+static const pin_map_t digitalPinMap[] = {
+  {&DDRD, &PIND, &PORTD, 0},  // D0  0
+  {&DDRD, &PIND, &PORTD, 1},  // D1  1
+  {&DDRD, &PIND, &PORTD, 2},  // D2  2
+  {&DDRD, &PIND, &PORTD, 3},  // D3  3
+  {&DDRD, &PIND, &PORTD, 4},  // D4  4
+  {&DDRD, &PIND, &PORTD, 5},  // D5  5
+  {&DDRD, &PIND, &PORTD, 6},  // D6  6
+  {&DDRD, &PIND, &PORTD, 7},  // D7  7
+  {&DDRB, &PINB, &PORTB, 0},  // B0  8
+  {&DDRB, &PINB, &PORTB, 1},  // B1  9
+  {&DDRB, &PINB, &PORTB, 2},  // B2 10
+  {&DDRB, &PINB, &PORTB, 3},  // B3 11
+  {&DDRB, &PINB, &PORTB, 4},  // B4 12
+  {&DDRB, &PINB, &PORTB, 5},  // B5 13
+  {&DDRC, &PINC, &PORTC, 0},  // C0 14
+  {&DDRC, &PINC, &PORTC, 1},  // C1 15
+  {&DDRC, &PINC, &PORTC, 2},  // C2 16
+  {&DDRC, &PINC, &PORTC, 3},  // C3 17
+  {&DDRC, &PINC, &PORTC, 4},  // C4 18
+  {&DDRC, &PINC, &PORTC, 5}   // C5 19
+};
+#endif  // defined(__AVR_ATmega1280__) || defined(__AVR_ATmega2560__)
+//------------------------------------------------------------------------------
+static const uint8_t digitalPinCount = sizeof(digitalPinMap) / sizeof(pin_map_t);
+
+uint8_t badPinNumber(void)
+__attribute__((error("Pin number is too large or not a constant")));
+
+static inline __attribute__((always_inline))
+uint8_t getPinMode(uint8_t pin) {
+  if (__builtin_constant_p(pin) && pin < digitalPinCount) {
+    return (*digitalPinMap[pin].ddr >> digitalPinMap[pin].bit) & 1;
+  } else {
+    return badPinNumber();
+  }
+}
+static inline __attribute__((always_inline))
+void setPinMode(uint8_t pin, uint8_t mode) {
+  if (__builtin_constant_p(pin) && pin < digitalPinCount) {
+    if (mode) {
+      *digitalPinMap[pin].ddr |= 1 << digitalPinMap[pin].bit;
+    } else {
+      *digitalPinMap[pin].ddr &= ~(1 << digitalPinMap[pin].bit);
+    }
+  } else {
+    badPinNumber();
+  }
+}
+static inline __attribute__((always_inline))
+uint8_t fastDigitalRead(uint8_t pin) {
+  if (__builtin_constant_p(pin) && pin < digitalPinCount) {
+    return (*digitalPinMap[pin].pin >> digitalPinMap[pin].bit) & 1;
+  } else {
+    return badPinNumber();
+  }
+}
+static inline __attribute__((always_inline))
+void fastDigitalWrite(uint8_t pin, uint8_t value) {
+  if (__builtin_constant_p(pin) && pin < digitalPinCount) {
+    if (value) {
+      *digitalPinMap[pin].port |= 1 << digitalPinMap[pin].bit;
+    } else {
+      *digitalPinMap[pin].port &= ~(1 << digitalPinMap[pin].bit);
+    }
+  } else {
+    badPinNumber();
+  }
+}
+#endif  // Sd2PinMap_h
+
+#elif defined (__CPU_ARC__)
+
+#if defined (__ARDUINO_ARC__)
+  // Two Wire (aka I2C) ports
+  uint8_t const SDA_PIN = 18;
+  uint8_t const SCL_PIN = 19;
+
+  // SPI port
+  uint8_t const SS_PIN = 10;
+  uint8_t const MOSI_PIN = 11;
+  uint8_t const MISO_PIN = 12;
+  uint8_t const SCK_PIN = 13;
+
+#endif // Arduino ARC
+
+#else
+#error Architecture or board not supported.
+#endif
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFat.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFat.h
new file mode 100644
index 000000000..e57974df8
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFat.h
@@ -0,0 +1,641 @@
+/* Arduino SdFat Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#ifndef SdFat_h
+#define SdFat_h
+/**
+   \file
+   SdFile and SdVolume classes
+*/
+#if defined (__AVR__) || defined (__CPU_ARC__)
+  #include <avr/pgmspace.h>
+#endif
+#include "Sd2Card.h"
+#include "FatStructs.h"
+#include <Print.h>
+//------------------------------------------------------------------------------
+/**
+   Allow use of deprecated functions if non-zero
+*/
+#define ALLOW_DEPRECATED_FUNCTIONS 1
+//------------------------------------------------------------------------------
+// forward declaration since SdVolume is used in SdFile
+class SdVolume;
+//==============================================================================
+// SdFile class
+
+#ifdef O_RDONLY //ARDUINO_ARCH_MBED
+#undef O_READ
+#undef O_RDONLY
+#undef O_WRITE
+#undef O_WRONLY
+#undef O_RDWR
+#undef O_ACCMODE
+#undef O_APPEND
+#undef O_SYNC
+#undef O_CREAT
+#undef O_EXCL
+#undef O_TRUNC
+#endif
+
+// flags for ls()
+/** ls() flag to print modify date */
+uint8_t const LS_DATE = 1;
+/** ls() flag to print file size */
+uint8_t const LS_SIZE = 2;
+/** ls() flag for recursive list of subdirectories */
+uint8_t const LS_R = 4;
+
+// use the gnu style oflag in open()
+/** open() oflag for reading */
+uint8_t const O_READ = 0X01;
+/** open() oflag - same as O_READ */
+uint8_t const O_RDONLY = O_READ;
+/** open() oflag for write */
+uint8_t const O_WRITE = 0X02;
+/** open() oflag - same as O_WRITE */
+uint8_t const O_WRONLY = O_WRITE;
+/** open() oflag for reading and writing */
+uint8_t const O_RDWR = (O_READ | O_WRITE);
+/** open() oflag mask for access modes */
+uint8_t const O_ACCMODE = (O_READ | O_WRITE);
+/** The file offset shall be set to the end of the file prior to each write. */
+uint8_t const O_APPEND = 0X04;
+/** synchronous writes - call sync() after each write */
+uint8_t const O_SYNC = 0X08;
+/** create the file if nonexistent */
+uint8_t const O_CREAT = 0X10;
+/** If O_CREAT and O_EXCL are set, open() shall fail if the file exists */
+uint8_t const O_EXCL = 0X20;
+/** truncate the file to zero length */
+uint8_t const O_TRUNC = 0X40;
+
+// flags for timestamp
+/** set the file's last access date */
+uint8_t const T_ACCESS = 1;
+/** set the file's creation date and time */
+uint8_t const T_CREATE = 2;
+/** Set the file's write date and time */
+uint8_t const T_WRITE = 4;
+// values for type_
+/** This SdFile has not been opened. */
+uint8_t const FAT_FILE_TYPE_CLOSED = 0;
+/** SdFile for a file */
+uint8_t const FAT_FILE_TYPE_NORMAL = 1;
+/** SdFile for a FAT16 root directory */
+uint8_t const FAT_FILE_TYPE_ROOT16 = 2;
+/** SdFile for a FAT32 root directory */
+uint8_t const FAT_FILE_TYPE_ROOT32 = 3;
+/** SdFile for a subdirectory */
+uint8_t const FAT_FILE_TYPE_SUBDIR = 4;
+/** Test value for directory type */
+uint8_t const FAT_FILE_TYPE_MIN_DIR = FAT_FILE_TYPE_ROOT16;
+
+/** date field for FAT directory entry */
+static inline uint16_t FAT_DATE(uint16_t year, uint8_t month, uint8_t day) {
+  return (year - 1980) << 9 | month << 5 | day;
+}
+/** year part of FAT directory date field */
+static inline uint16_t FAT_YEAR(uint16_t fatDate) {
+  return 1980 + (fatDate >> 9);
+}
+/** month part of FAT directory date field */
+static inline uint8_t FAT_MONTH(uint16_t fatDate) {
+  return (fatDate >> 5) & 0XF;
+}
+/** day part of FAT directory date field */
+static inline uint8_t FAT_DAY(uint16_t fatDate) {
+  return fatDate & 0X1F;
+}
+/** time field for FAT directory entry */
+static inline uint16_t FAT_TIME(uint8_t hour, uint8_t minute, uint8_t second) {
+  return hour << 11 | minute << 5 | second >> 1;
+}
+/** hour part of FAT directory time field */
+static inline uint8_t FAT_HOUR(uint16_t fatTime) {
+  return fatTime >> 11;
+}
+/** minute part of FAT directory time field */
+static inline uint8_t FAT_MINUTE(uint16_t fatTime) {
+  return (fatTime >> 5) & 0X3F;
+}
+/** second part of FAT directory time field */
+static inline uint8_t FAT_SECOND(uint16_t fatTime) {
+  return 2 * (fatTime & 0X1F);
+}
+/** Default date for file timestamps is 1 Jan 2000 */
+uint16_t const FAT_DEFAULT_DATE = ((2000 - 1980) << 9) | (1 << 5) | 1;
+/** Default time for file timestamp is 1 am */
+uint16_t const FAT_DEFAULT_TIME = (1 << 11);
+//------------------------------------------------------------------------------
+/**
+   \class SdFile
+   \brief Access FAT16 and FAT32 files on SD and SDHC cards.
+*/
+class SdFile : public Print {
+  public:
+    /** Create an instance of SdFile. */
+    SdFile(void) : type_(FAT_FILE_TYPE_CLOSED) {}
+    /**
+       writeError is set to true if an error occurs during a write().
+       Set writeError to false before calling print() and/or write() and check
+       for true after calls to print() and/or write().
+    */
+    //bool writeError;
+    /**
+       Cancel unbuffered reads for this file.
+       See setUnbufferedRead()
+    */
+    void clearUnbufferedRead(void) {
+      flags_ &= ~F_FILE_UNBUFFERED_READ;
+    }
+    uint8_t close(void);
+    uint8_t contiguousRange(uint32_t* bgnBlock, uint32_t* endBlock);
+    uint8_t createContiguous(SdFile* dirFile,
+                             const char* fileName, uint32_t size);
+    /** \return The current cluster number for a file or directory. */
+    uint32_t curCluster(void) const {
+      return curCluster_;
+    }
+    /** \return The current position for a file or directory. */
+    uint32_t curPosition(void) const {
+      return curPosition_;
+    }
+    /**
+       Set the date/time callback function
+
+       \param[in] dateTime The user's call back function.  The callback
+       function is of the form:
+
+       \code
+       void dateTime(uint16_t* date, uint16_t* time) {
+         uint16_t year;
+         uint8_t month, day, hour, minute, second;
+
+         // User gets date and time from GPS or real-time clock here
+
+         // return date using FAT_DATE macro to format fields
+     *   *date = FAT_DATE(year, month, day);
+
+         // return time using FAT_TIME macro to format fields
+     *   *time = FAT_TIME(hour, minute, second);
+       }
+       \endcode
+
+       Sets the function that is called when a file is created or when
+       a file's directory entry is modified by sync(). All timestamps,
+       access, creation, and modify, are set when a file is created.
+       sync() maintains the last access date and last modify date/time.
+
+       See the timestamp() function.
+    */
+    static void dateTimeCallback(
+      void (*dateTime)(uint16_t* date, uint16_t* time)) {
+      dateTime_ = dateTime;
+    }
+    /**
+       Cancel the date/time callback function.
+    */
+    static void dateTimeCallbackCancel(void) {
+      // use explicit zero since NULL is not defined for Sanguino
+      dateTime_ = 0;
+    }
+    /** \return Address of the block that contains this file's directory. */
+    uint32_t dirBlock(void) const {
+      return dirBlock_;
+    }
+    uint8_t dirEntry(dir_t* dir);
+    /** \return Index of this file's directory in the block dirBlock. */
+    uint8_t dirIndex(void) const {
+      return dirIndex_;
+    }
+    static void dirName(const dir_t& dir, char* name);
+    /** \return The total number of bytes in a file or directory. */
+    uint32_t fileSize(void) const {
+      return fileSize_;
+    }
+    /** \return The first cluster number for a file or directory. */
+    uint32_t firstCluster(void) const {
+      return firstCluster_;
+    }
+    /** \return True if this is a SdFile for a directory else false. */
+    uint8_t isDir(void) const {
+      return type_ >= FAT_FILE_TYPE_MIN_DIR;
+    }
+    /** \return True if this is a SdFile for a file else false. */
+    uint8_t isFile(void) const {
+      return type_ == FAT_FILE_TYPE_NORMAL;
+    }
+    /** \return True if this is a SdFile for an open file/directory else false. */
+    uint8_t isOpen(void) const {
+      return type_ != FAT_FILE_TYPE_CLOSED;
+    }
+    /** \return True if this is a SdFile for a subdirectory else false. */
+    uint8_t isSubDir(void) const {
+      return type_ == FAT_FILE_TYPE_SUBDIR;
+    }
+    /** \return True if this is a SdFile for the root directory. */
+    uint8_t isRoot(void) const {
+      return type_ == FAT_FILE_TYPE_ROOT16 || type_ == FAT_FILE_TYPE_ROOT32;
+    }
+    void ls(uint8_t flags = 0, uint8_t indent = 0);
+    uint8_t makeDir(SdFile* dir, const char* dirName);
+    uint8_t open(SdFile* dirFile, uint16_t index, uint8_t oflag);
+    uint8_t open(SdFile* dirFile, const char* fileName, uint8_t oflag);
+
+    uint8_t openRoot(SdVolume* vol);
+    static void printDirName(const dir_t& dir, uint8_t width);
+    static void printFatDate(uint16_t fatDate);
+    static void printFatTime(uint16_t fatTime);
+    static void printTwoDigits(uint8_t v);
+    /**
+       Read the next byte from a file.
+
+       \return For success read returns the next byte in the file as an int.
+       If an error occurs or end of file is reached -1 is returned.
+    */
+    int16_t read(void) {
+      uint8_t b;
+      return read(&b, 1) == 1 ? b : -1;
+    }
+    int16_t read(void* buf, uint16_t nbyte);
+    int8_t readDir(dir_t* dir);
+    static uint8_t remove(SdFile* dirFile, const char* fileName);
+    uint8_t remove(void);
+    /** Set the file's current position to zero. */
+    void rewind(void) {
+      curPosition_ = curCluster_ = 0;
+    }
+    uint8_t rmDir(void);
+    uint8_t rmRfStar(void);
+    /** Set the files position to current position + \a pos. See seekSet(). */
+    uint8_t seekCur(uint32_t pos) {
+      return seekSet(curPosition_ + pos);
+    }
+    /**
+        Set the files current position to end of file.  Useful to position
+        a file for append. See seekSet().
+    */
+    uint8_t seekEnd(void) {
+      return seekSet(fileSize_);
+    }
+    uint8_t seekSet(uint32_t pos);
+    /**
+       Use unbuffered reads to access this file.  Used with Wave
+       Shield ISR.  Used with Sd2Card::partialBlockRead() in WaveRP.
+
+       Not recommended for normal applications.
+    */
+    void setUnbufferedRead(void) {
+      if (isFile()) {
+        flags_ |= F_FILE_UNBUFFERED_READ;
+      }
+    }
+    uint8_t timestamp(uint8_t flag, uint16_t year, uint8_t month, uint8_t day,
+                      uint8_t hour, uint8_t minute, uint8_t second);
+    uint8_t sync(uint8_t blocking = 1);
+    /** Type of this SdFile.  You should use isFile() or isDir() instead of type()
+       if possible.
+
+       \return The file or directory type.
+    */
+    uint8_t type(void) const {
+      return type_;
+    }
+    uint8_t truncate(uint32_t size);
+    /** \return Unbuffered read flag. */
+    uint8_t unbufferedRead(void) const {
+      return flags_ & F_FILE_UNBUFFERED_READ;
+    }
+    /** \return SdVolume that contains this file. */
+    SdVolume* volume(void) const {
+      return vol_;
+    }
+    size_t write(uint8_t b);
+    size_t write(const void* buf, uint16_t nbyte);
+    size_t write(const char* str);
+    #ifdef __AVR__
+    void write_P(PGM_P str);
+    void writeln_P(PGM_P str);
+    #endif
+    int availableForWrite(void);
+    //------------------------------------------------------------------------------
+    #if ALLOW_DEPRECATED_FUNCTIONS
+    // Deprecated functions  - suppress cpplint warnings with NOLINT comment
+    /** \deprecated Use:
+       uint8_t SdFile::contiguousRange(uint32_t* bgnBlock, uint32_t* endBlock);
+    */
+    uint8_t contiguousRange(uint32_t& bgnBlock, uint32_t& endBlock) {  // NOLINT
+      return contiguousRange(&bgnBlock, &endBlock);
+    }
+    /** \deprecated Use:
+        uint8_t SdFile::createContiguous(SdFile* dirFile,
+          const char* fileName, uint32_t size)
+    */
+    uint8_t createContiguous(SdFile& dirFile,  // NOLINT
+                             const char* fileName, uint32_t size) {
+      return createContiguous(&dirFile, fileName, size);
+    }
+
+    /**
+       \deprecated Use:
+       static void SdFile::dateTimeCallback(
+         void (*dateTime)(uint16_t* date, uint16_t* time));
+    */
+    static void dateTimeCallback(
+      void (*dateTime)(uint16_t& date, uint16_t& time)) {  // NOLINT
+      oldDateTime_ = dateTime;
+      dateTime_ = dateTime ? oldToNew : 0;
+    }
+    /** \deprecated Use: uint8_t SdFile::dirEntry(dir_t* dir); */
+    uint8_t dirEntry(dir_t& dir) {
+      return dirEntry(&dir); // NOLINT
+    }
+    /** \deprecated Use:
+       uint8_t SdFile::makeDir(SdFile* dir, const char* dirName);
+    */
+    uint8_t makeDir(SdFile& dir, const char* dirName) {  // NOLINT
+      return makeDir(&dir, dirName);
+    }
+    /** \deprecated Use:
+       uint8_t SdFile::open(SdFile* dirFile, const char* fileName, uint8_t oflag);
+    */
+    uint8_t open(SdFile& dirFile, // NOLINT
+                 const char* fileName, uint8_t oflag) {
+      return open(&dirFile, fileName, oflag);
+    }
+    /** \deprecated  Do not use in new apps */
+    uint8_t open(SdFile& dirFile, const char* fileName) {  // NOLINT
+      return open(dirFile, fileName, O_RDWR);
+    }
+    /** \deprecated Use:
+       uint8_t SdFile::open(SdFile* dirFile, uint16_t index, uint8_t oflag);
+    */
+    uint8_t open(SdFile& dirFile, uint16_t index, uint8_t oflag) {  // NOLINT
+      return open(&dirFile, index, oflag);
+    }
+    /** \deprecated Use: uint8_t SdFile::openRoot(SdVolume* vol); */
+    uint8_t openRoot(SdVolume& vol) {
+      return openRoot(&vol); // NOLINT
+    }
+
+    /** \deprecated Use: int8_t SdFile::readDir(dir_t* dir); */
+    int8_t readDir(dir_t& dir) {
+      return readDir(&dir); // NOLINT
+    }
+    /** \deprecated Use:
+       static uint8_t SdFile::remove(SdFile* dirFile, const char* fileName);
+    */
+    static uint8_t remove(SdFile& dirFile, const char* fileName) {  // NOLINT
+      return remove(&dirFile, fileName);
+    }
+    //------------------------------------------------------------------------------
+    // rest are private
+  private:
+    static void (*oldDateTime_)(uint16_t& date, uint16_t& time);  // NOLINT
+    static void oldToNew(uint16_t* date, uint16_t* time) {
+      uint16_t d;
+      uint16_t t;
+      oldDateTime_(d, t);
+      *date = d;
+      *time = t;
+    }
+    #endif  // ALLOW_DEPRECATED_FUNCTIONS
+  private:
+    // bits defined in flags_
+    // should be 0XF
+    static uint8_t const F_OFLAG = (O_ACCMODE | O_APPEND | O_SYNC);
+    // available bits
+    static uint8_t const F_FILE_NON_BLOCKING_WRITE = 0X10;
+    // a new cluster was added to the file
+    static uint8_t const F_FILE_CLUSTER_ADDED = 0X20;
+    // use unbuffered SD read
+    static uint8_t const F_FILE_UNBUFFERED_READ = 0X40;
+    // sync of directory entry required
+    static uint8_t const F_FILE_DIR_DIRTY = 0X80;
+
+    // make sure F_OFLAG is ok
+    #if ((F_FILE_NON_BLOCKING_WRITE | F_FILE_CLUSTER_ADDED | F_FILE_UNBUFFERED_READ | F_FILE_DIR_DIRTY) & 
F_OFLAG)
+#error flags_ bits conflict
+    #endif  // flags_ bits
+
+    // private data
+    uint8_t   flags_;         // See above for definition of flags_ bits
+    uint8_t   type_;          // type of file see above for values
+    uint32_t  curCluster_;    // cluster for current file position
+    uint32_t  curPosition_;   // current file position in bytes from beginning
+    uint32_t  dirBlock_;      // SD block that contains directory entry for file
+    uint8_t   dirIndex_;      // index of entry in dirBlock 0 <= dirIndex_ <= 0XF
+    uint32_t  fileSize_;      // file size in bytes
+    uint32_t  firstCluster_;  // first cluster of file
+    SdVolume* vol_;           // volume where file is located
+
+    // private functions
+    uint8_t addCluster(void);
+    uint8_t addDirCluster(void);
+    dir_t* cacheDirEntry(uint8_t action);
+    static void (*dateTime_)(uint16_t* date, uint16_t* time);
+    static uint8_t make83Name(const char* str, uint8_t* name);
+    uint8_t openCachedEntry(uint8_t cacheIndex, uint8_t oflags);
+    dir_t* readDirCache(void);
+};
+//==============================================================================
+// SdVolume class
+/**
+   \brief Cache for an SD data block
+*/
+union cache_t {
+  /** Used to access cached file data blocks. */
+  uint8_t  data[512];
+  /** Used to access cached FAT16 entries. */
+  uint16_t fat16[256];
+  /** Used to access cached FAT32 entries. */
+  uint32_t fat32[128];
+  /** Used to access cached directory entries. */
+  dir_t    dir[16];
+  /** Used to access a cached MasterBoot Record. */
+  mbr_t    mbr;
+  /** Used to access to a cached FAT boot sector. */
+  fbs_t    fbs;
+};
+//------------------------------------------------------------------------------
+/**
+   \class SdVolume
+   \brief Access FAT16 and FAT32 volumes on SD and SDHC cards.
+*/
+class SdVolume {
+  public:
+    /** Create an instance of SdVolume */
+    SdVolume(void) : allocSearchStart_(2), fatType_(0) {}
+    /** Clear the cache and returns a pointer to the cache.  Used by the WaveRP
+        recorder to do raw write to the SD card.  Not for normal apps.
+    */
+    static uint8_t* cacheClear(void) {
+      cacheFlush();
+      cacheBlockNumber_ = 0XFFFFFFFF;
+      return cacheBuffer_.data;
+    }
+    /**
+       Initialize a FAT volume.  Try partition one first then try super
+       floppy format.
+
+       \param[in] dev The Sd2Card where the volume is located.
+
+       \return The value one, true, is returned for success and
+       the value zero, false, is returned for failure.  Reasons for
+       failure include not finding a valid partition, not finding a valid
+       FAT file system or an I/O error.
+    */
+    uint8_t init(Sd2Card* dev) {
+      return init(dev, 1) ? true : init(dev, 0);
+    }
+    uint8_t init(Sd2Card* dev, uint8_t part);
+
+    // inline functions that return volume info
+    /** \return The volume's cluster size in blocks. */
+    uint8_t blocksPerCluster(void) const {
+      return blocksPerCluster_;
+    }
+    /** \return The number of blocks in one FAT. */
+    uint32_t blocksPerFat(void)  const {
+      return blocksPerFat_;
+    }
+    /** \return The total number of clusters in the volume. */
+    uint32_t clusterCount(void) const {
+      return clusterCount_;
+    }
+    /** \return The shift count required to multiply by blocksPerCluster. */
+    uint8_t clusterSizeShift(void) const {
+      return clusterSizeShift_;
+    }
+    /** \return The logical block number for the start of file data. */
+    uint32_t dataStartBlock(void) const {
+      return dataStartBlock_;
+    }
+    /** \return The number of FAT structures on the volume. */
+    uint8_t fatCount(void) const {
+      return fatCount_;
+    }
+    /** \return The logical block number for the start of the first FAT. */
+    uint32_t fatStartBlock(void) const {
+      return fatStartBlock_;
+    }
+    /** \return The FAT type of the volume. Values are 12, 16 or 32. */
+    uint8_t fatType(void) const {
+      return fatType_;
+    }
+    /** \return The number of entries in the root directory for FAT16 volumes. */
+    uint32_t rootDirEntryCount(void) const {
+      return rootDirEntryCount_;
+    }
+    /** \return The logical block number for the start of the root directory
+         on FAT16 volumes or the first cluster number on FAT32 volumes. */
+    uint32_t rootDirStart(void) const {
+      return rootDirStart_;
+    }
+    /** return a pointer to the Sd2Card object for this volume */
+    static Sd2Card* sdCard(void) {
+      return sdCard_;
+    }
+    //------------------------------------------------------------------------------
+    #if ALLOW_DEPRECATED_FUNCTIONS
+    // Deprecated functions  - suppress cpplint warnings with NOLINT comment
+    /** \deprecated Use: uint8_t SdVolume::init(Sd2Card* dev); */
+    uint8_t init(Sd2Card& dev) {
+      return init(&dev); // NOLINT
+    }
+
+    /** \deprecated Use: uint8_t SdVolume::init(Sd2Card* dev, uint8_t vol); */
+    uint8_t init(Sd2Card& dev, uint8_t part) {  // NOLINT
+      return init(&dev, part);
+    }
+    #endif  // ALLOW_DEPRECATED_FUNCTIONS
+    //------------------------------------------------------------------------------
+  private:
+    // Allow SdFile access to SdVolume private data.
+    friend class SdFile;
+
+    // value for action argument in cacheRawBlock to indicate read from cache
+    static uint8_t const CACHE_FOR_READ = 0;
+    // value for action argument in cacheRawBlock to indicate cache dirty
+    static uint8_t const CACHE_FOR_WRITE = 1;
+
+    static cache_t cacheBuffer_;        // 512 byte cache for device blocks
+    static uint32_t cacheBlockNumber_;  // Logical number of block in the cache
+    static Sd2Card* sdCard_;            // Sd2Card object for cache
+    static uint8_t cacheDirty_;         // cacheFlush() will write block if true
+    static uint32_t cacheMirrorBlock_;  // block number for mirror FAT
+    //
+    uint32_t allocSearchStart_;   // start cluster for alloc search
+    uint8_t blocksPerCluster_;    // cluster size in blocks
+    uint32_t blocksPerFat_;       // FAT size in blocks
+    uint32_t clusterCount_;       // clusters in one FAT
+    uint8_t clusterSizeShift_;    // shift to convert cluster count to block count
+    uint32_t dataStartBlock_;     // first data block number
+    uint8_t fatCount_;            // number of FATs on volume
+    uint32_t fatStartBlock_;      // start block for first FAT
+    uint8_t fatType_;             // volume type (12, 16, OR 32)
+    uint16_t rootDirEntryCount_;  // number of entries in FAT16 root dir
+    uint32_t rootDirStart_;       // root start block for FAT16, cluster for FAT32
+    //----------------------------------------------------------------------------
+    uint8_t allocContiguous(uint32_t count, uint32_t* curCluster);
+    uint8_t blockOfCluster(uint32_t position) const {
+      return (position >> 9) & (blocksPerCluster_ - 1);
+    }
+    uint32_t clusterStartBlock(uint32_t cluster) const {
+      return dataStartBlock_ + ((cluster - 2) << clusterSizeShift_);
+    }
+    uint32_t blockNumber(uint32_t cluster, uint32_t position) const {
+      return clusterStartBlock(cluster) + blockOfCluster(position);
+    }
+    static uint8_t cacheFlush(uint8_t blocking = 1);
+    static uint8_t cacheMirrorBlockFlush(uint8_t blocking);
+    static uint8_t cacheRawBlock(uint32_t blockNumber, uint8_t action);
+    static void cacheSetDirty(void) {
+      cacheDirty_ |= CACHE_FOR_WRITE;
+    }
+    static uint8_t cacheZeroBlock(uint32_t blockNumber);
+    uint8_t chainSize(uint32_t beginCluster, uint32_t* size) const;
+    uint8_t fatGet(uint32_t cluster, uint32_t* value) const;
+    uint8_t fatPut(uint32_t cluster, uint32_t value);
+    uint8_t fatPutEOC(uint32_t cluster) {
+      return fatPut(cluster, 0x0FFFFFFF);
+    }
+    uint8_t freeChain(uint32_t cluster);
+    uint8_t isEOC(uint32_t cluster) const {
+      return  cluster >= (fatType_ == 16 ? FAT16EOC_MIN : FAT32EOC_MIN);
+    }
+    uint8_t readBlock(uint32_t block, uint8_t* dst) {
+      return sdCard_->readBlock(block, dst);
+    }
+    uint8_t readData(uint32_t block, uint16_t offset,
+                     uint16_t count, uint8_t* dst) {
+      return sdCard_->readData(block, offset, count, dst);
+    }
+    uint8_t writeBlock(uint32_t block, const uint8_t* dst, uint8_t blocking = 1) {
+      return sdCard_->writeBlock(block, dst, blocking);
+    }
+    uint8_t isBusy(void) {
+      return sdCard_->isBusy();
+    }
+    uint8_t isCacheMirrorBlockDirty(void) {
+      return (cacheMirrorBlock_ != 0);
+    }
+};
+#endif  // SdFat_h
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFatUtil.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFatUtil.h
new file mode 100644
index 000000000..4b93de8a8
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFatUtil.h
@@ -0,0 +1,77 @@
+/* Arduino SdFat Library
+   Copyright (C) 2008 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#ifndef SdFatUtil_h
+#define SdFatUtil_h
+/**
+   \file
+   Useful utility functions.
+*/
+#include <Arduino.h>
+#ifdef __AVR__
+  #include <avr/pgmspace.h>
+  /** Store and print a string in flash memory.*/
+  #define PgmPrint(x) SerialPrint_P(PSTR(x))
+  /** Store and print a string in flash memory followed by a CR/LF.*/
+  #define PgmPrintln(x) SerialPrintln_P(PSTR(x))
+  /** Defined so doxygen works for function definitions. */
+#endif
+#define NOINLINE __attribute__((noinline,unused))
+#define UNUSEDOK __attribute__((unused))
+//------------------------------------------------------------------------------
+/** Return the number of bytes currently free in RAM. */
+static UNUSEDOK int FreeRam(void) {
+  extern int  __bss_end;
+  extern int* __brkval;
+  int free_memory;
+  if (reinterpret_cast<int>(__brkval) == 0) {
+    // if no heap use from end of bss section
+    free_memory = reinterpret_cast<int>(&free_memory)
+                  - reinterpret_cast<int>(&__bss_end);
+  } else {
+    // use from top of stack to heap
+    free_memory = reinterpret_cast<int>(&free_memory)
+                  - reinterpret_cast<int>(__brkval);
+  }
+  return free_memory;
+}
+#ifdef __AVR__
+//------------------------------------------------------------------------------
+/**
+   %Print a string in flash memory to the serial port.
+
+   \param[in] str Pointer to string stored in flash memory.
+*/
+static NOINLINE void SerialPrint_P(PGM_P str) {
+  for (uint8_t c; (c = pgm_read_byte(str)); str++) {
+    Serial.write(c);
+  }
+}
+//------------------------------------------------------------------------------
+/**
+   %Print a string in flash memory followed by a CR/LF.
+
+   \param[in] str Pointer to string stored in flash memory.
+*/
+static NOINLINE void SerialPrintln_P(PGM_P str) {
+  SerialPrint_P(str);
+  Serial.println();
+}
+#endif  // __AVR__
+#endif  // #define SdFatUtil_h
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFatmainpage.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFatmainpage.h
new file mode 100644
index 000000000..1e6d96f9c
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFatmainpage.h
@@ -0,0 +1,202 @@
+/* Arduino SdFat Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+
+/**
+  \mainpage Arduino SdFat Library
+  <CENTER>Copyright &copy; 2009 by William Greiman
+  </CENTER>
+
+  \section Intro Introduction
+  The Arduino SdFat Library is a minimal implementation of FAT16 and FAT32
+  file systems on SD flash memory cards.  Standard SD and high capacity
+  SDHC cards are supported.
+
+  The SdFat only supports short 8.3 names.
+
+  The main classes in SdFat are Sd2Card, SdVolume, and SdFile.
+
+  The Sd2Card class supports access to standard SD cards and SDHC cards.  Most
+  applications will only need to call the Sd2Card::init() member function.
+
+  The SdVolume class supports FAT16 and FAT32 partitions.  Most applications
+  will only need to call the SdVolume::init() member function.
+
+  The SdFile class provides file access functions such as open(), read(),
+  remove(), write(), close() and sync(). This class supports access to the root
+  directory and subdirectories.
+
+  A number of example are provided in the SdFat/examples folder.  These were
+  developed to test SdFat and illustrate its use.
+
+  SdFat was developed for high speed data recording.  SdFat was used to implement
+  an audio record/play class, WaveRP, for the Adafruit Wave Shield.  This
+  application uses special Sd2Card calls to write to contiguous files in raw mode.
+  These functions reduce write latency so that audio can be recorded with the
+  small amount of RAM in the Arduino.
+
+  \section SDcard SD\SDHC Cards
+
+  Arduinos access SD cards using the cards SPI protocol.  PCs, Macs, and
+  most consumer devices use the 4-bit parallel SD protocol.  A card that
+  functions well on A PC or Mac may not work well on the Arduino.
+
+  Most cards have good SPI read performance but cards vary widely in SPI
+  write performance.  Write performance is limited by how efficiently the
+  card manages internal erase/remapping operations.  The Arduino cannot
+  optimize writes to reduce erase operations because of its limit RAM.
+
+  SanDisk cards generally have good write performance.  They seem to have
+  more internal RAM buffering than other cards and therefore can limit
+  the number of flash erase operations that the Arduino forces due to its
+  limited RAM.
+
+  \section Hardware Hardware Configuration
+
+  SdFat was developed using an
+  <A HREF = "http://www.adafruit.com/";> Adafruit Industries</A>
+  <A HREF = "http://www.ladyada.net/make/waveshield/";> Wave Shield</A>.
+
+  The hardware interface to the SD card should not use a resistor based level
+  shifter.  SdFat sets the SPI bus frequency to 8 MHz which results in signal
+  rise times that are too slow for the edge detectors in many newer SD card
+  controllers when resistor voltage dividers are used.
+
+  The 5 to 3.3 V level shifter for 5 V Arduinos should be IC based like the
+  74HC4050N based circuit shown in the file SdLevel.png.  The Adafruit Wave Shield
+  uses a 74AHC125N.  Gravitech sells SD and MicroSD Card Adapters based on the
+  74LCX245.
+
+  If you are using a resistor based level shifter and are having problems try
+  setting the SPI bus frequency to 4 MHz.  This can be done by using
+  card.init(SPI_HALF_SPEED) to initialize the SD card.
+
+  \section comment Bugs and Comments
+
+  If you wish to report bugs or have comments, send email to fat16lib sbcglobal net.
+
+  \section SdFatClass SdFat Usage
+
+  SdFat uses a slightly restricted form of short names.
+  Only printable ASCII characters are supported. No characters with code point
+  values greater than 127 are allowed.  Space is not allowed even though space
+  was allowed in the API of early versions of DOS.
+
+  Short names are limited to 8 characters followed by an optional period (.)
+  and extension of up to 3 characters.  The characters may be any combination
+  of letters and digits.  The following special characters are also allowed:
+
+  $ % ' - _ @ ~ ` ! ( ) { } ^ # &
+
+  Short names are always converted to upper case and their original case
+  value is lost.
+
+  \note
+  The Arduino Print class uses character
+  at a time writes so it was necessary to use a \link SdFile::sync() sync() \endlink
+  function to control when data is written to the SD card.
+
+  \par
+  An application which writes to a file using \link Print::print() print()\endlink,
+  \link Print::println() println() \endlink
+  or \link SdFile::write write() \endlink must call \link SdFile::sync() sync() \endlink
+  at the appropriate time to force data and directory information to be written
+  to the SD Card.  Data and directory information are also written to the SD card
+  when \link SdFile::close() close() \endlink is called.
+
+  \par
+  Applications must use care calling \link SdFile::sync() sync() \endlink
+  since 2048 bytes of I/O is required to update file and
+  directory information.  This includes writing the current data block, reading
+  the block that contains the directory entry for update, writing the directory
+  block back and reading back the current data block.
+
+  It is possible to open a file with two or more instances of SdFile.  A file may
+  be corrupted if data is written to the file by more than one instance of SdFile.
+
+  \section HowTo How to format SD Cards as FAT Volumes
+
+  You should use a freshly formatted SD card for best performance.  FAT
+  file systems become slower if many files have been created and deleted.
+  This is because the directory entry for a deleted file is marked as deleted,
+  but is not deleted.  When a new file is created, these entries must be scanned
+  before creating the file, a flaw in the FAT design.  Also files can become
+  fragmented which causes reads and writes to be slower.
+
+  Microsoft operating systems support removable media formatted with a
+  Master Boot Record, MBR, or formatted as a super floppy with a FAT Boot Sector
+  in block zero.
+
+  Microsoft operating systems expect MBR formatted removable media
+  to have only one partition. The first partition should be used.
+
+  Microsoft operating systems do not support partitioning SD flash cards.
+  If you erase an SD card with a program like KillDisk, Most versions of
+  Windows will format the card as a super floppy.
+
+  The best way to restore an SD card's format is to use SDFormatter
+  which can be downloaded from:
+
+  http://www.sdcard.org/consumers/formatter/
+
+  SDFormatter aligns flash erase boundaries with file
+  system structures which reduces write latency and file system overhead.
+
+  SDFormatter does not have an option for FAT type so it may format
+  small cards as FAT12.
+
+  After the MBR is restored by SDFormatter you may need to reformat small
+  cards that have been formatted FAT12 to force the volume type to be FAT16.
+
+  If you reformat the SD card with an OS utility, choose a cluster size that
+  will result in:
+
+  4084 < CountOfClusters && CountOfClusters < 65525
+
+  The volume will then be FAT16.
+
+  If you are formatting an SD card on OS X or Linux, be sure to use the first
+  partition. Format this partition with a cluster count in above range.
+
+  \section  References References
+
+  Adafruit Industries:
+
+  http://www.adafruit.com/
+
+  http://www.ladyada.net/make/waveshield/
+
+  The Arduino site:
+
+  http://www.arduino.cc/
+
+  For more information about FAT file systems see:
+
+  http://www.microsoft.com/whdc/system/platform/firmware/fatgen.mspx
+
+  For information about using SD cards as SPI devices see:
+
+  http://www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
+
+  The ATmega328 datasheet:
+
+  http://www.atmel.com/dyn/resources/prod_documents/doc8161.pdf
+
+
+*/
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFile.cpp 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFile.cpp
new file mode 100644
index 000000000..18a1db6e7
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdFile.cpp
@@ -0,0 +1,1527 @@
+/* Arduino SdFat Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#include "SdFat.h"
+#ifdef __AVR__
+  #include <avr/pgmspace.h>
+#endif
+#include <Arduino.h>
+//------------------------------------------------------------------------------
+// callback function for date/time
+void (*SdFile::dateTime_)(uint16_t* date, uint16_t* time) = NULL;
+
+#if ALLOW_DEPRECATED_FUNCTIONS
+  // suppress cpplint warnings with NOLINT comment
+  void (*SdFile::oldDateTime_)(uint16_t& date, uint16_t& time) = NULL;  // NOLINT
+#endif  // ALLOW_DEPRECATED_FUNCTIONS
+//------------------------------------------------------------------------------
+// add a cluster to a file
+uint8_t SdFile::addCluster() {
+  if (!vol_->allocContiguous(1, &curCluster_)) {
+    return false;
+  }
+
+  // if first cluster of file link to directory entry
+  if (firstCluster_ == 0) {
+    firstCluster_ = curCluster_;
+    flags_ |= F_FILE_DIR_DIRTY;
+  }
+  flags_ |= F_FILE_CLUSTER_ADDED;
+  return true;
+}
+//------------------------------------------------------------------------------
+// Add a cluster to a directory file and zero the cluster.
+// return with first block of cluster in the cache
+uint8_t SdFile::addDirCluster(void) {
+  if (!addCluster()) {
+    return false;
+  }
+
+  // zero data in cluster insure first cluster is in cache
+  uint32_t block = vol_->clusterStartBlock(curCluster_);
+  for (uint8_t i = vol_->blocksPerCluster_; i != 0; i--) {
+    if (!SdVolume::cacheZeroBlock(block + i - 1)) {
+      return false;
+    }
+  }
+  // Increase directory file size by cluster size
+  fileSize_ += 512UL << vol_->clusterSizeShift_;
+  return true;
+}
+//------------------------------------------------------------------------------
+// cache a file's directory entry
+// return pointer to cached entry or null for failure
+dir_t* SdFile::cacheDirEntry(uint8_t action) {
+  if (!SdVolume::cacheRawBlock(dirBlock_, action)) {
+    return NULL;
+  }
+  return SdVolume::cacheBuffer_.dir + dirIndex_;
+}
+//------------------------------------------------------------------------------
+/**
+    Close a file and force cached data and directory information
+    to be written to the storage device.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include no file is open or an I/O error.
+*/
+uint8_t SdFile::close(void) {
+  if (!sync()) {
+    return false;
+  }
+  type_ = FAT_FILE_TYPE_CLOSED;
+  return true;
+}
+//------------------------------------------------------------------------------
+/**
+   Check for contiguous file and return its raw block range.
+
+   \param[out] bgnBlock the first block address for the file.
+   \param[out] endBlock the last  block address for the file.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include file is not contiguous, file has zero length
+   or an I/O error occurred.
+*/
+uint8_t SdFile::contiguousRange(uint32_t* bgnBlock, uint32_t* endBlock) {
+  // error if no blocks
+  if (firstCluster_ == 0) {
+    return false;
+  }
+
+  for (uint32_t c = firstCluster_; ; c++) {
+    uint32_t next;
+    if (!vol_->fatGet(c, &next)) {
+      return false;
+    }
+
+    // check for contiguous
+    if (next != (c + 1)) {
+      // error if not end of chain
+      if (!vol_->isEOC(next)) {
+        return false;
+      }
+      *bgnBlock = vol_->clusterStartBlock(firstCluster_);
+      *endBlock = vol_->clusterStartBlock(c)
+                  + vol_->blocksPerCluster_ - 1;
+      return true;
+    }
+  }
+}
+//------------------------------------------------------------------------------
+/**
+   Create and open a new contiguous file of a specified size.
+
+   \note This function only supports short DOS 8.3 names.
+   See open() for more information.
+
+   \param[in] dirFile The directory where the file will be created.
+   \param[in] fileName A valid DOS 8.3 file name.
+   \param[in] size The desired file size.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include \a fileName contains
+   an invalid DOS 8.3 file name, the FAT volume has not been initialized,
+   a file is already open, the file already exists, the root
+   directory is full or an I/O error.
+
+*/
+uint8_t SdFile::createContiguous(SdFile* dirFile,
+                                 const char* fileName, uint32_t size) {
+  // don't allow zero length file
+  if (size == 0) {
+    return false;
+  }
+  if (!open(dirFile, fileName, O_CREAT | O_EXCL | O_RDWR)) {
+    return false;
+  }
+
+  // calculate number of clusters needed
+  uint32_t count = ((size - 1) >> (vol_->clusterSizeShift_ + 9)) + 1;
+
+  // allocate clusters
+  if (!vol_->allocContiguous(count, &firstCluster_)) {
+    remove();
+    return false;
+  }
+  fileSize_ = size;
+
+  // insure sync() will update dir entry
+  flags_ |= F_FILE_DIR_DIRTY;
+  return sync();
+}
+//------------------------------------------------------------------------------
+/**
+   Return a files directory entry
+
+   \param[out] dir Location for return of the files directory entry.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t SdFile::dirEntry(dir_t* dir) {
+  // make sure fields on SD are correct
+  if (!sync()) {
+    return false;
+  }
+
+  // read entry
+  dir_t* p = cacheDirEntry(SdVolume::CACHE_FOR_READ);
+  if (!p) {
+    return false;
+  }
+
+  // copy to caller's struct
+  memcpy(dir, p, sizeof(dir_t));
+  return true;
+}
+//------------------------------------------------------------------------------
+/**
+   Format the name field of \a dir into the 13 byte array
+   \a name in standard 8.3 short name format.
+
+   \param[in] dir The directory structure containing the name.
+   \param[out] name A 13 byte char array for the formatted name.
+*/
+void SdFile::dirName(const dir_t& dir, char* name) {
+  uint8_t j = 0;
+  for (uint8_t i = 0; i < 11; i++) {
+    if (dir.name[i] == ' ') {
+      continue;
+    }
+    if (i == 8) {
+      name[j++] = '.';
+    }
+    name[j++] = dir.name[i];
+  }
+  name[j] = 0;
+}
+//------------------------------------------------------------------------------
+/** List directory contents to Serial.
+
+   \param[in] flags The inclusive OR of
+
+   LS_DATE - %Print file modification date
+
+   LS_SIZE - %Print file size.
+
+   LS_R - Recursive list of subdirectories.
+
+   \param[in] indent Amount of space before file name. Used for recursive
+   list to indicate subdirectory level.
+*/
+void SdFile::ls(uint8_t flags, uint8_t indent) {
+  dir_t* p;
+
+  rewind();
+  while ((p = readDirCache())) {
+    // done if past last used entry
+    if (p->name[0] == DIR_NAME_FREE) {
+      break;
+    }
+
+    // skip deleted entry and entries for . and  ..
+    if (p->name[0] == DIR_NAME_DELETED || p->name[0] == '.') {
+      continue;
+    }
+
+    // only list subdirectories and files
+    if (!DIR_IS_FILE_OR_SUBDIR(p)) {
+      continue;
+    }
+
+    // print any indent spaces
+    for (int8_t i = 0; i < indent; i++) {
+      Serial.print(' ');
+    }
+
+    // print file name with possible blank fill
+    printDirName(*p, flags & (LS_DATE | LS_SIZE) ? 14 : 0);
+
+    // print modify date/time if requested
+    if (flags & LS_DATE) {
+      printFatDate(p->lastWriteDate);
+      Serial.print(' ');
+      printFatTime(p->lastWriteTime);
+    }
+    // print size if requested
+    if (!DIR_IS_SUBDIR(p) && (flags & LS_SIZE)) {
+      Serial.print(' ');
+      Serial.print(p->fileSize);
+    }
+    Serial.println();
+
+    // list subdirectory content if requested
+    if ((flags & LS_R) && DIR_IS_SUBDIR(p)) {
+      uint16_t index = curPosition() / 32 - 1;
+      SdFile s;
+      if (s.open(this, index, O_READ)) {
+        s.ls(flags, indent + 2);
+      }
+      seekSet(32 * (index + 1));
+    }
+  }
+}
+//------------------------------------------------------------------------------
+// format directory name field from a 8.3 name string
+uint8_t SdFile::make83Name(const char* str, uint8_t* name) {
+  uint8_t c;
+  uint8_t n = 7;  // max index for part before dot
+  uint8_t i = 0;
+  // blank fill name and extension
+  while (i < 11) {
+    name[i++] = ' ';
+  }
+  i = 0;
+  while ((c = *str++) != '\0') {
+    if (c == '.') {
+      if (n == 10) {
+        return false;  // only one dot allowed
+      }
+      n = 10;  // max index for full 8.3 name
+      i = 8;   // place for extension
+    } else {
+      // illegal FAT characters
+      uint8_t b;
+      #if defined(__AVR__)
+      PGM_P p = PSTR("|<>^+=?/[];,*\"\\");
+      while ((b = pgm_read_byte(p++))) if (b == c) {
+          return false;
+        }
+      #elif defined(__arm__)
+      const uint8_t valid[] = "|<>^+=?/[];,*\"\\";
+      const uint8_t *p = valid;
+      while ((b = *p++)) if (b == c) {
+          return false;
+        }
+      #endif
+      // check size and only allow ASCII printable characters
+      if (i > n || c < 0X21 || c > 0X7E) {
+        return false;
+      }
+      // only upper case allowed in 8.3 names - convert lower to upper
+      name[i++] = c < 'a' || c > 'z' ?  c : c + ('A' - 'a');
+    }
+  }
+  // must have a file name, extension is optional
+  return name[0] != ' ';
+}
+//------------------------------------------------------------------------------
+/** Make a new directory.
+
+   \param[in] dir An open SdFat instance for the directory that will containing
+   the new directory.
+
+   \param[in] dirName A valid 8.3 DOS name for the new directory.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include this SdFile is already open, \a dir is not a
+   directory, \a dirName is invalid or already exists in \a dir.
+*/
+uint8_t SdFile::makeDir(SdFile* dir, const char* dirName) {
+  dir_t d;
+
+  // create a normal file
+  if (!open(dir, dirName, O_CREAT | O_EXCL | O_RDWR)) {
+    return false;
+  }
+
+  // convert SdFile to directory
+  flags_ = O_READ;
+  type_ = FAT_FILE_TYPE_SUBDIR;
+
+  // allocate and zero first cluster
+  if (!addDirCluster()) {
+    return false;
+  }
+
+  // force entry to SD
+  if (!sync()) {
+    return false;
+  }
+
+  // cache entry - should already be in cache due to sync() call
+  dir_t* p = cacheDirEntry(SdVolume::CACHE_FOR_WRITE);
+  if (!p) {
+    return false;
+  }
+
+  // change directory entry  attribute
+  p->attributes = DIR_ATT_DIRECTORY;
+
+  // make entry for '.'
+  memcpy(&d, p, sizeof(d));
+  for (uint8_t i = 1; i < 11; i++) {
+    d.name[i] = ' ';
+  }
+  d.name[0] = '.';
+
+  // cache block for '.'  and '..'
+  uint32_t block = vol_->clusterStartBlock(firstCluster_);
+  if (!SdVolume::cacheRawBlock(block, SdVolume::CACHE_FOR_WRITE)) {
+    return false;
+  }
+
+  // copy '.' to block
+  memcpy(&SdVolume::cacheBuffer_.dir[0], &d, sizeof(d));
+
+  // make entry for '..'
+  d.name[1] = '.';
+  if (dir->isRoot()) {
+    d.firstClusterLow = 0;
+    d.firstClusterHigh = 0;
+  } else {
+    d.firstClusterLow = dir->firstCluster_ & 0XFFFF;
+    d.firstClusterHigh = dir->firstCluster_ >> 16;
+  }
+  // copy '..' to block
+  memcpy(&SdVolume::cacheBuffer_.dir[1], &d, sizeof(d));
+
+  // set position after '..'
+  curPosition_ = 2 * sizeof(d);
+
+  // write first block
+  return SdVolume::cacheFlush();
+}
+//------------------------------------------------------------------------------
+/**
+   Open a file or directory by name.
+
+   \param[in] dirFile An open SdFat instance for the directory containing the
+   file to be opened.
+
+   \param[in] fileName A valid 8.3 DOS name for a file to be opened.
+
+   \param[in] oflag Values for \a oflag are constructed by a bitwise-inclusive
+   OR of flags from the following list
+
+   O_READ - Open for reading.
+
+   O_RDONLY - Same as O_READ.
+
+   O_WRITE - Open for writing.
+
+   O_WRONLY - Same as O_WRITE.
+
+   O_RDWR - Open for reading and writing.
+
+   O_APPEND - If set, the file offset shall be set to the end of the
+   file prior to each write.
+
+   O_CREAT - If the file exists, this flag has no effect except as noted
+   under O_EXCL below. Otherwise, the file shall be created
+
+   O_EXCL - If O_CREAT and O_EXCL are set, open() shall fail if the file exists.
+
+   O_SYNC - Call sync() after each write.  This flag should not be used with
+   write(uint8_t), write_P(PGM_P), writeln_P(PGM_P), or the Arduino Print class.
+   These functions do character at a time writes so sync() will be called
+   after each byte.
+
+   O_TRUNC - If the file exists and is a regular file, and the file is
+   successfully opened and is not read only, its length shall be truncated to 0.
+
+   \note Directory files must be opened read only.  Write and truncation is
+   not allowed for directory files.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include this SdFile is already open, \a difFile is not
+   a directory, \a fileName is invalid, the file does not exist
+   or can't be opened in the access mode specified by oflag.
+*/
+uint8_t SdFile::open(SdFile* dirFile, const char* fileName, uint8_t oflag) {
+  uint8_t dname[11];
+  dir_t* p;
+
+  // error if already open
+  if (isOpen()) {
+    return false;
+  }
+
+  if (!make83Name(fileName, dname)) {
+    return false;
+  }
+  vol_ = dirFile->vol_;
+  dirFile->rewind();
+
+  // bool for empty entry found
+  uint8_t emptyFound = false;
+
+  // search for file
+  while (dirFile->curPosition_ < dirFile->fileSize_) {
+    uint8_t index = 0XF & (dirFile->curPosition_ >> 5);
+    p = dirFile->readDirCache();
+    if (p == NULL) {
+      return false;
+    }
+
+    if (p->name[0] == DIR_NAME_FREE || p->name[0] == DIR_NAME_DELETED) {
+      // remember first empty slot
+      if (!emptyFound) {
+        emptyFound = true;
+        dirIndex_ = index;
+        dirBlock_ = SdVolume::cacheBlockNumber_;
+      }
+      // done if no entries follow
+      if (p->name[0] == DIR_NAME_FREE) {
+        break;
+      }
+    } else if (!memcmp(dname, p->name, 11)) {
+      // don't open existing file if O_CREAT and O_EXCL
+      if ((oflag & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) {
+        return false;
+      }
+
+      // open found file
+      return openCachedEntry(0XF & index, oflag);
+    }
+  }
+  // only create file if O_CREAT and O_WRITE
+  if ((oflag & (O_CREAT | O_WRITE)) != (O_CREAT | O_WRITE)) {
+    return false;
+  }
+
+  // cache found slot or add cluster if end of file
+  if (emptyFound) {
+    p = cacheDirEntry(SdVolume::CACHE_FOR_WRITE);
+    if (!p) {
+      return false;
+    }
+  } else {
+    if (dirFile->type_ == FAT_FILE_TYPE_ROOT16) {
+      return false;
+    }
+
+    // add and zero cluster for dirFile - first cluster is in cache for write
+    if (!dirFile->addDirCluster()) {
+      return false;
+    }
+
+    // use first entry in cluster
+    dirIndex_ = 0;
+    p = SdVolume::cacheBuffer_.dir;
+  }
+  // initialize as empty file
+  memset(p, 0, sizeof(dir_t));
+  memcpy(p->name, dname, 11);
+
+  // set timestamps
+  if (dateTime_) {
+    // call user function
+    dateTime_(&p->creationDate, &p->creationTime);
+  } else {
+    // use default date/time
+    p->creationDate = FAT_DEFAULT_DATE;
+    p->creationTime = FAT_DEFAULT_TIME;
+  }
+  p->lastAccessDate = p->creationDate;
+  p->lastWriteDate = p->creationDate;
+  p->lastWriteTime = p->creationTime;
+
+  // force write of entry to SD
+  if (!SdVolume::cacheFlush()) {
+    return false;
+  }
+
+  // open entry in cache
+  return openCachedEntry(dirIndex_, oflag);
+}
+//------------------------------------------------------------------------------
+/**
+   Open a file by index.
+
+   \param[in] dirFile An open SdFat instance for the directory.
+
+   \param[in] index The \a index of the directory entry for the file to be
+   opened.  The value for \a index is (directory file position)/32.
+
+   \param[in] oflag Values for \a oflag are constructed by a bitwise-inclusive
+   OR of flags O_READ, O_WRITE, O_TRUNC, and O_SYNC.
+
+   See open() by fileName for definition of flags and return values.
+
+*/
+uint8_t SdFile::open(SdFile* dirFile, uint16_t index, uint8_t oflag) {
+  // error if already open
+  if (isOpen()) {
+    return false;
+  }
+
+  // don't open existing file if O_CREAT and O_EXCL - user call error
+  if ((oflag & (O_CREAT | O_EXCL)) == (O_CREAT | O_EXCL)) {
+    return false;
+  }
+
+  vol_ = dirFile->vol_;
+
+  // seek to location of entry
+  if (!dirFile->seekSet(32 * index)) {
+    return false;
+  }
+
+  // read entry into cache
+  dir_t* p = dirFile->readDirCache();
+  if (p == NULL) {
+    return false;
+  }
+
+  // error if empty slot or '.' or '..'
+  if (p->name[0] == DIR_NAME_FREE ||
+      p->name[0] == DIR_NAME_DELETED || p->name[0] == '.') {
+    return false;
+  }
+  // open cached entry
+  return openCachedEntry(index & 0XF, oflag);
+}
+//------------------------------------------------------------------------------
+// open a cached directory entry. Assumes vol_ is initializes
+uint8_t SdFile::openCachedEntry(uint8_t dirIndex, uint8_t oflag) {
+  // location of entry in cache
+  dir_t* p = SdVolume::cacheBuffer_.dir + dirIndex;
+
+  // write or truncate is an error for a directory or read-only file
+  if (p->attributes & (DIR_ATT_READ_ONLY | DIR_ATT_DIRECTORY)) {
+    if (oflag & (O_WRITE | O_TRUNC)) {
+      return false;
+    }
+  }
+  // remember location of directory entry on SD
+  dirIndex_ = dirIndex;
+  dirBlock_ = SdVolume::cacheBlockNumber_;
+
+  // copy first cluster number for directory fields
+  firstCluster_ = (uint32_t)p->firstClusterHigh << 16;
+  firstCluster_ |= p->firstClusterLow;
+
+  // make sure it is a normal file or subdirectory
+  if (DIR_IS_FILE(p)) {
+    fileSize_ = p->fileSize;
+    type_ = FAT_FILE_TYPE_NORMAL;
+  } else if (DIR_IS_SUBDIR(p)) {
+    if (!vol_->chainSize(firstCluster_, &fileSize_)) {
+      return false;
+    }
+    type_ = FAT_FILE_TYPE_SUBDIR;
+  } else {
+    return false;
+  }
+  // save open flags for read/write
+  flags_ = oflag & (O_ACCMODE | O_SYNC | O_APPEND);
+
+  // set to start of file
+  curCluster_ = 0;
+  curPosition_ = 0;
+
+  // truncate file to zero length if requested
+  if (oflag & O_TRUNC) {
+    return truncate(0);
+  }
+  return true;
+}
+//------------------------------------------------------------------------------
+/**
+   Open a volume's root directory.
+
+   \param[in] vol The FAT volume containing the root directory to be opened.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include the FAT volume has not been initialized
+   or it a FAT12 volume.
+*/
+uint8_t SdFile::openRoot(SdVolume* vol) {
+  // error if file is already open
+  if (isOpen()) {
+    return false;
+  }
+
+  if (vol->fatType() == 16) {
+    type_ = FAT_FILE_TYPE_ROOT16;
+    firstCluster_ = 0;
+    fileSize_ = 32 * vol->rootDirEntryCount();
+  } else if (vol->fatType() == 32) {
+    type_ = FAT_FILE_TYPE_ROOT32;
+    firstCluster_ = vol->rootDirStart();
+    if (!vol->chainSize(firstCluster_, &fileSize_)) {
+      return false;
+    }
+  } else {
+    // volume is not initialized or FAT12
+    return false;
+  }
+  vol_ = vol;
+  // read only
+  flags_ = O_READ;
+
+  // set to start of file
+  curCluster_ = 0;
+  curPosition_ = 0;
+
+  // root has no directory entry
+  dirBlock_ = 0;
+  dirIndex_ = 0;
+  return true;
+}
+//------------------------------------------------------------------------------
+/** %Print the name field of a directory entry in 8.3 format to Serial.
+
+   \param[in] dir The directory structure containing the name.
+   \param[in] width Blank fill name if length is less than \a width.
+*/
+void SdFile::printDirName(const dir_t& dir, uint8_t width) {
+  uint8_t w = 0;
+  for (uint8_t i = 0; i < 11; i++) {
+    if (dir.name[i] == ' ') {
+      continue;
+    }
+    if (i == 8) {
+      Serial.print('.');
+      w++;
+    }
+    Serial.write(dir.name[i]);
+    w++;
+  }
+  if (DIR_IS_SUBDIR(&dir)) {
+    Serial.print('/');
+    w++;
+  }
+  while (w < width) {
+    Serial.print(' ');
+    w++;
+  }
+}
+//------------------------------------------------------------------------------
+/** %Print a directory date field to Serial.
+
+    Format is yyyy-mm-dd.
+
+   \param[in] fatDate The date field from a directory entry.
+*/
+void SdFile::printFatDate(uint16_t fatDate) {
+  Serial.print(FAT_YEAR(fatDate));
+  Serial.print('-');
+  printTwoDigits(FAT_MONTH(fatDate));
+  Serial.print('-');
+  printTwoDigits(FAT_DAY(fatDate));
+}
+//------------------------------------------------------------------------------
+/** %Print a directory time field to Serial.
+
+   Format is hh:mm:ss.
+
+   \param[in] fatTime The time field from a directory entry.
+*/
+void SdFile::printFatTime(uint16_t fatTime) {
+  printTwoDigits(FAT_HOUR(fatTime));
+  Serial.print(':');
+  printTwoDigits(FAT_MINUTE(fatTime));
+  Serial.print(':');
+  printTwoDigits(FAT_SECOND(fatTime));
+}
+//------------------------------------------------------------------------------
+/** %Print a value as two digits to Serial.
+
+   \param[in] v Value to be printed, 0 <= \a v <= 99
+*/
+void SdFile::printTwoDigits(uint8_t v) {
+  char str[3];
+  str[0] = '0' + v / 10;
+  str[1] = '0' + v % 10;
+  str[2] = 0;
+  Serial.print(str);
+}
+//------------------------------------------------------------------------------
+/**
+   Read data from a file starting at the current position.
+
+   \param[out] buf Pointer to the location that will receive the data.
+
+   \param[in] nbyte Maximum number of bytes to read.
+
+   \return For success read() returns the number of bytes read.
+   A value less than \a nbyte, including zero, will be returned
+   if end of file is reached.
+   If an error occurs, read() returns -1.  Possible errors include
+   read() called before a file has been opened, corrupt file system
+   or an I/O error occurred.
+*/
+int16_t SdFile::read(void* buf, uint16_t nbyte) {
+  uint8_t* dst = reinterpret_cast<uint8_t*>(buf);
+
+  // error if not open or write only
+  if (!isOpen() || !(flags_ & O_READ)) {
+    return -1;
+  }
+
+  // max bytes left in file
+  if (nbyte > (fileSize_ - curPosition_)) {
+    nbyte = fileSize_ - curPosition_;
+  }
+
+  // amount left to read
+  uint16_t toRead = nbyte;
+  while (toRead > 0) {
+    uint32_t block;  // raw device block number
+    uint16_t offset = curPosition_ & 0X1FF;  // offset in block
+    if (type_ == FAT_FILE_TYPE_ROOT16) {
+      block = vol_->rootDirStart() + (curPosition_ >> 9);
+    } else {
+      uint8_t blockOfCluster = vol_->blockOfCluster(curPosition_);
+      if (offset == 0 && blockOfCluster == 0) {
+        // start of new cluster
+        if (curPosition_ == 0) {
+          // use first cluster in file
+          curCluster_ = firstCluster_;
+        } else {
+          // get next cluster from FAT
+          if (!vol_->fatGet(curCluster_, &curCluster_)) {
+            return -1;
+          }
+        }
+      }
+      block = vol_->clusterStartBlock(curCluster_) + blockOfCluster;
+    }
+    uint16_t n = toRead;
+
+    // amount to be read from current block
+    if (n > (512 - offset)) {
+      n = 512 - offset;
+    }
+
+    // no buffering needed if n == 512 or user requests no buffering
+    if ((unbufferedRead() || n == 512) &&
+        block != SdVolume::cacheBlockNumber_) {
+      if (!vol_->readData(block, offset, n, dst)) {
+        return -1;
+      }
+      dst += n;
+    } else {
+      // read block to cache and copy data to caller
+      if (!SdVolume::cacheRawBlock(block, SdVolume::CACHE_FOR_READ)) {
+        return -1;
+      }
+      uint8_t* src = SdVolume::cacheBuffer_.data + offset;
+      uint8_t* end = src + n;
+      while (src != end) {
+        *dst++ = *src++;
+      }
+    }
+    curPosition_ += n;
+    toRead -= n;
+  }
+  return nbyte;
+}
+//------------------------------------------------------------------------------
+/**
+   Read the next directory entry from a directory file.
+
+   \param[out] dir The dir_t struct that will receive the data.
+
+   \return For success readDir() returns the number of bytes read.
+   A value of zero will be returned if end of file is reached.
+   If an error occurs, readDir() returns -1.  Possible errors include
+   readDir() called before a directory has been opened, this is not
+   a directory file or an I/O error occurred.
+*/
+int8_t SdFile::readDir(dir_t* dir) {
+  int8_t n;
+  // if not a directory file or miss-positioned return an error
+  if (!isDir() || (0X1F & curPosition_)) {
+    return -1;
+  }
+
+  while ((n = read(dir, sizeof(dir_t))) == sizeof(dir_t)) {
+    // last entry if DIR_NAME_FREE
+    if (dir->name[0] == DIR_NAME_FREE) {
+      break;
+    }
+    // skip empty entries and entry for .  and ..
+    if (dir->name[0] == DIR_NAME_DELETED || dir->name[0] == '.') {
+      continue;
+    }
+    // return if normal file or subdirectory
+    if (DIR_IS_FILE_OR_SUBDIR(dir)) {
+      return n;
+    }
+  }
+  // error, end of file, or past last entry
+  return n < 0 ? -1 : 0;
+}
+//------------------------------------------------------------------------------
+// Read next directory entry into the cache
+// Assumes file is correctly positioned
+dir_t* SdFile::readDirCache(void) {
+  // error if not directory
+  if (!isDir()) {
+    return NULL;
+  }
+
+  // index of entry in cache
+  uint8_t i = (curPosition_ >> 5) & 0XF;
+
+  // use read to locate and cache block
+  if (read() < 0) {
+    return NULL;
+  }
+
+  // advance to next entry
+  curPosition_ += 31;
+
+  // return pointer to entry
+  return (SdVolume::cacheBuffer_.dir + i);
+}
+//------------------------------------------------------------------------------
+/**
+   Remove a file.
+
+   The directory entry and all data for the file are deleted.
+
+   \note This function should not be used to delete the 8.3 version of a
+   file that has a long name. For example if a file has the long name
+   "New Text Document.txt" you should not delete the 8.3 name "NEWTEX~1.TXT".
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include the file read-only, is a directory,
+   or an I/O error occurred.
+*/
+uint8_t SdFile::remove(void) {
+  // free any clusters - will fail if read-only or directory
+  if (!truncate(0)) {
+    return false;
+  }
+
+  // cache directory entry
+  dir_t* d = cacheDirEntry(SdVolume::CACHE_FOR_WRITE);
+  if (!d) {
+    return false;
+  }
+
+  // mark entry deleted
+  d->name[0] = DIR_NAME_DELETED;
+
+  // set this SdFile closed
+  type_ = FAT_FILE_TYPE_CLOSED;
+
+  // write entry to SD
+  return SdVolume::cacheFlush();
+}
+//------------------------------------------------------------------------------
+/**
+   Remove a file.
+
+   The directory entry and all data for the file are deleted.
+
+   \param[in] dirFile The directory that contains the file.
+   \param[in] fileName The name of the file to be removed.
+
+   \note This function should not be used to delete the 8.3 version of a
+   file that has a long name. For example if a file has the long name
+   "New Text Document.txt" you should not delete the 8.3 name "NEWTEX~1.TXT".
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include the file is a directory, is read only,
+   \a dirFile is not a directory, \a fileName is not found
+   or an I/O error occurred.
+*/
+uint8_t SdFile::remove(SdFile* dirFile, const char* fileName) {
+  SdFile file;
+  if (!file.open(dirFile, fileName, O_WRITE)) {
+    return false;
+  }
+  return file.remove();
+}
+//------------------------------------------------------------------------------
+/** Remove a directory file.
+
+   The directory file will be removed only if it is empty and is not the
+   root directory.  rmDir() follows DOS and Windows and ignores the
+   read-only attribute for the directory.
+
+   \note This function should not be used to delete the 8.3 version of a
+   directory that has a long name. For example if a directory has the
+   long name "New folder" you should not delete the 8.3 name "NEWFOL~1".
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include the file is not a directory, is the root
+   directory, is not empty, or an I/O error occurred.
+*/
+uint8_t SdFile::rmDir(void) {
+  // must be open subdirectory
+  if (!isSubDir()) {
+    return false;
+  }
+
+  rewind();
+
+  // make sure directory is empty
+  while (curPosition_ < fileSize_) {
+    dir_t* p = readDirCache();
+    if (p == NULL) {
+      return false;
+    }
+    // done if past last used entry
+    if (p->name[0] == DIR_NAME_FREE) {
+      break;
+    }
+    // skip empty slot or '.' or '..'
+    if (p->name[0] == DIR_NAME_DELETED || p->name[0] == '.') {
+      continue;
+    }
+    // error not empty
+    if (DIR_IS_FILE_OR_SUBDIR(p)) {
+      return false;
+    }
+  }
+  // convert empty directory to normal file for remove
+  type_ = FAT_FILE_TYPE_NORMAL;
+  flags_ |= O_WRITE;
+  return remove();
+}
+//------------------------------------------------------------------------------
+/** Recursively delete a directory and all contained files.
+
+   This is like the Unix/Linux 'rm -rf *' if called with the root directory
+   hence the name.
+
+   Warning - This will remove all contents of the directory including
+   subdirectories.  The directory will then be removed if it is not root.
+   The read-only attribute for files will be ignored.
+
+   \note This function should not be used to delete the 8.3 version of
+   a directory that has a long name.  See remove() and rmDir().
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t SdFile::rmRfStar(void) {
+  rewind();
+  while (curPosition_ < fileSize_) {
+    SdFile f;
+
+    // remember position
+    uint16_t index = curPosition_ / 32;
+
+    dir_t* p = readDirCache();
+    if (!p) {
+      return false;
+    }
+
+    // done if past last entry
+    if (p->name[0] == DIR_NAME_FREE) {
+      break;
+    }
+
+    // skip empty slot or '.' or '..'
+    if (p->name[0] == DIR_NAME_DELETED || p->name[0] == '.') {
+      continue;
+    }
+
+    // skip if part of long file name or volume label in root
+    if (!DIR_IS_FILE_OR_SUBDIR(p)) {
+      continue;
+    }
+
+    if (!f.open(this, index, O_READ)) {
+      return false;
+    }
+    if (f.isSubDir()) {
+      // recursively delete
+      if (!f.rmRfStar()) {
+        return false;
+      }
+    } else {
+      // ignore read-only
+      f.flags_ |= O_WRITE;
+      if (!f.remove()) {
+        return false;
+      }
+    }
+    // position to next entry if required
+    if (curPosition_ != (32u * (index + 1))) {
+      if (!seekSet(32u * (index + 1))) {
+        return false;
+      }
+    }
+  }
+  // don't try to delete root
+  if (isRoot()) {
+    return true;
+  }
+  return rmDir();
+}
+//------------------------------------------------------------------------------
+/**
+   Sets a file's position.
+
+   \param[in] pos The new position in bytes from the beginning of the file.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t SdFile::seekSet(uint32_t pos) {
+  // error if file not open or seek past end of file
+  if (!isOpen() || pos > fileSize_) {
+    return false;
+  }
+
+  if (type_ == FAT_FILE_TYPE_ROOT16) {
+    curPosition_ = pos;
+    return true;
+  }
+  if (pos == 0) {
+    // set position to start of file
+    curCluster_ = 0;
+    curPosition_ = 0;
+    return true;
+  }
+  // calculate cluster index for cur and new position
+  uint32_t nCur = (curPosition_ - 1) >> (vol_->clusterSizeShift_ + 9);
+  uint32_t nNew = (pos - 1) >> (vol_->clusterSizeShift_ + 9);
+
+  if (nNew < nCur || curPosition_ == 0) {
+    // must follow chain from first cluster
+    curCluster_ = firstCluster_;
+  } else {
+    // advance from curPosition
+    nNew -= nCur;
+  }
+  while (nNew--) {
+    if (!vol_->fatGet(curCluster_, &curCluster_)) {
+      return false;
+    }
+  }
+  curPosition_ = pos;
+  return true;
+}
+//------------------------------------------------------------------------------
+/**
+   The sync() call causes all modified data and directory fields
+   to be written to the storage device.
+
+   \param[in] blocking If the sync should block until fully complete.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include a call to sync() before a file has been
+   opened or an I/O error.
+*/
+uint8_t SdFile::sync(uint8_t blocking) {
+  // only allow open files and directories
+  if (!isOpen()) {
+    return false;
+  }
+
+  if (flags_ & F_FILE_DIR_DIRTY) {
+    dir_t* d = cacheDirEntry(SdVolume::CACHE_FOR_WRITE);
+    if (!d) {
+      return false;
+    }
+
+    // do not set filesize for dir files
+    if (!isDir()) {
+      d->fileSize = fileSize_;
+    }
+
+    // update first cluster fields
+    d->firstClusterLow = firstCluster_ & 0XFFFF;
+    d->firstClusterHigh = firstCluster_ >> 16;
+
+    // set modify time if user supplied a callback date/time function
+    if (dateTime_) {
+      dateTime_(&d->lastWriteDate, &d->lastWriteTime);
+      d->lastAccessDate = d->lastWriteDate;
+    }
+    // clear directory dirty
+    flags_ &= ~F_FILE_DIR_DIRTY;
+  }
+
+  if (!blocking) {
+    flags_ &= ~F_FILE_NON_BLOCKING_WRITE;
+  }
+
+  return SdVolume::cacheFlush(blocking);
+}
+//------------------------------------------------------------------------------
+/**
+   Set a file's timestamps in its directory entry.
+
+   \param[in] flags Values for \a flags are constructed by a bitwise-inclusive
+   OR of flags from the following list
+
+   T_ACCESS - Set the file's last access date.
+
+   T_CREATE - Set the file's creation date and time.
+
+   T_WRITE - Set the file's last write/modification date and time.
+
+   \param[in] year Valid range 1980 - 2107 inclusive.
+
+   \param[in] month Valid range 1 - 12 inclusive.
+
+   \param[in] day Valid range 1 - 31 inclusive.
+
+   \param[in] hour Valid range 0 - 23 inclusive.
+
+   \param[in] minute Valid range 0 - 59 inclusive.
+
+   \param[in] second Valid range 0 - 59 inclusive
+
+   \note It is possible to set an invalid date since there is no check for
+   the number of days in a month.
+
+   \note
+   Modify and access timestamps may be overwritten if a date time callback
+   function has been set by dateTimeCallback().
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+*/
+uint8_t SdFile::timestamp(uint8_t flags, uint16_t year, uint8_t month,
+                          uint8_t day, uint8_t hour, uint8_t minute, uint8_t second) {
+  if (!isOpen()
+      || year < 1980
+      || year > 2107
+      || month < 1
+      || month > 12
+      || day < 1
+      || day > 31
+      || hour > 23
+      || minute > 59
+      || second > 59) {
+    return false;
+  }
+  dir_t* d = cacheDirEntry(SdVolume::CACHE_FOR_WRITE);
+  if (!d) {
+    return false;
+  }
+
+  uint16_t dirDate = FAT_DATE(year, month, day);
+  uint16_t dirTime = FAT_TIME(hour, minute, second);
+  if (flags & T_ACCESS) {
+    d->lastAccessDate = dirDate;
+  }
+  if (flags & T_CREATE) {
+    d->creationDate = dirDate;
+    d->creationTime = dirTime;
+    // seems to be units of 1/100 second not 1/10 as Microsoft states
+    d->creationTimeTenths = second & 1 ? 100 : 0;
+  }
+  if (flags & T_WRITE) {
+    d->lastWriteDate = dirDate;
+    d->lastWriteTime = dirTime;
+  }
+  SdVolume::cacheSetDirty();
+  return sync();
+}
+//------------------------------------------------------------------------------
+/**
+   Truncate a file to a specified length.  The current file position
+   will be maintained if it is less than or equal to \a length otherwise
+   it will be set to end of file.
+
+   \param[in] length The desired length for the file.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.
+   Reasons for failure include file is read only, file is a directory,
+   \a length is greater than the current file size or an I/O error occurs.
+*/
+uint8_t SdFile::truncate(uint32_t length) {
+  // error if not a normal file or read-only
+  if (!isFile() || !(flags_ & O_WRITE)) {
+    return false;
+  }
+
+  // error if length is greater than current size
+  if (length > fileSize_) {
+    return false;
+  }
+
+  // fileSize and length are zero - nothing to do
+  if (fileSize_ == 0) {
+    return true;
+  }
+
+  // remember position for seek after truncation
+  uint32_t newPos = curPosition_ > length ? length : curPosition_;
+
+  // position to last cluster in truncated file
+  if (!seekSet(length)) {
+    return false;
+  }
+
+  if (length == 0) {
+    // free all clusters
+    if (!vol_->freeChain(firstCluster_)) {
+      return false;
+    }
+    firstCluster_ = 0;
+  } else {
+    uint32_t toFree;
+    if (!vol_->fatGet(curCluster_, &toFree)) {
+      return false;
+    }
+
+    if (!vol_->isEOC(toFree)) {
+      // free extra clusters
+      if (!vol_->freeChain(toFree)) {
+        return false;
+      }
+
+      // current cluster is end of chain
+      if (!vol_->fatPutEOC(curCluster_)) {
+        return false;
+      }
+    }
+  }
+  fileSize_ = length;
+
+  // need to update directory entry
+  flags_ |= F_FILE_DIR_DIRTY;
+
+  if (!sync()) {
+    return false;
+  }
+
+  // set file to correct position
+  return seekSet(newPos);
+}
+//------------------------------------------------------------------------------
+/**
+   Write data to an open file.
+
+   \note Data is moved to the cache but may not be written to the
+   storage device until sync() is called.
+
+   \param[in] buf Pointer to the location of the data to be written.
+
+   \param[in] nbyte Number of bytes to write.
+
+   \return For success write() returns the number of bytes written, always
+   \a nbyte.  If an error occurs, write() returns 0.  Possible errors
+   include write() is called before a file has been opened, write is called
+   for a read-only file, device is full, a corrupt file system or an I/O error.
+
+*/
+size_t SdFile::write(const void* buf, uint16_t nbyte) {
+  // convert void* to uint8_t*  -  must be before goto statements
+  const uint8_t* src = reinterpret_cast<const uint8_t*>(buf);
+
+  // number of bytes left to write  -  must be before goto statements
+  uint16_t nToWrite = nbyte;
+  // if blocking writes should be used
+  uint8_t blocking = (flags_ & F_FILE_NON_BLOCKING_WRITE) == 0x00;
+
+  // error if not a normal file or is read-only
+  if (!isFile() || !(flags_ & O_WRITE)) {
+    goto writeErrorReturn;
+  }
+
+  // seek to end of file if append flag
+  if ((flags_ & O_APPEND) && curPosition_ != fileSize_) {
+    if (!seekEnd()) {
+      goto writeErrorReturn;
+    }
+  }
+
+  while (nToWrite > 0) {
+    uint8_t blockOfCluster = vol_->blockOfCluster(curPosition_);
+    uint16_t blockOffset = curPosition_ & 0X1FF;
+    if (blockOfCluster == 0 && blockOffset == 0) {
+      // start of new cluster
+      if (curCluster_ == 0) {
+        if (firstCluster_ == 0) {
+          // allocate first cluster of file
+          if (!addCluster()) {
+            goto writeErrorReturn;
+          }
+        } else {
+          curCluster_ = firstCluster_;
+        }
+      } else {
+        uint32_t next;
+        if (!vol_->fatGet(curCluster_, &next)) {
+          return false;
+        }
+        if (vol_->isEOC(next)) {
+          // add cluster if at end of chain
+          if (!addCluster()) {
+            goto writeErrorReturn;
+          }
+        } else {
+          curCluster_ = next;
+        }
+      }
+    }
+    // max space in block
+    uint16_t n = 512 - blockOffset;
+
+    // lesser of space and amount to write
+    if (n > nToWrite) {
+      n = nToWrite;
+    }
+
+    // block for data write
+    uint32_t block = vol_->clusterStartBlock(curCluster_) + blockOfCluster;
+    if (n == 512) {
+      // full block - don't need to use cache
+      // invalidate cache if block is in cache
+      if (SdVolume::cacheBlockNumber_ == block) {
+        SdVolume::cacheBlockNumber_ = 0XFFFFFFFF;
+      }
+      if (!vol_->writeBlock(block, src, blocking)) {
+        goto writeErrorReturn;
+      }
+      src += 512;
+    } else {
+      if (blockOffset == 0 && curPosition_ >= fileSize_) {
+        // start of new block don't need to read into cache
+        if (!SdVolume::cacheFlush()) {
+          goto writeErrorReturn;
+        }
+        SdVolume::cacheBlockNumber_ = block;
+        SdVolume::cacheSetDirty();
+      } else {
+        // rewrite part of block
+        if (!SdVolume::cacheRawBlock(block, SdVolume::CACHE_FOR_WRITE)) {
+          goto writeErrorReturn;
+        }
+      }
+      uint8_t* dst = SdVolume::cacheBuffer_.data + blockOffset;
+      uint8_t* end = dst + n;
+      while (dst != end) {
+        *dst++ = *src++;
+      }
+    }
+    nToWrite -= n;
+    curPosition_ += n;
+  }
+  if (curPosition_ > fileSize_) {
+    // update fileSize and insure sync will update dir entry
+    fileSize_ = curPosition_;
+    flags_ |= F_FILE_DIR_DIRTY;
+  } else if (dateTime_ && nbyte) {
+    // insure sync will update modified date and time
+    flags_ |= F_FILE_DIR_DIRTY;
+  }
+
+  if (flags_ & O_SYNC) {
+    if (!sync()) {
+      goto writeErrorReturn;
+    }
+  }
+  return nbyte;
+
+writeErrorReturn:
+  // return for write error
+  //writeError = true;
+  setWriteError();
+  return 0;
+}
+//------------------------------------------------------------------------------
+/**
+   Write a byte to a file. Required by the Arduino Print class.
+
+   Use SdFile::writeError to check for errors.
+*/
+size_t SdFile::write(uint8_t b) {
+  return write(&b, 1);
+}
+//------------------------------------------------------------------------------
+/**
+   Write a string to a file. Used by the Arduino Print class.
+
+   Use SdFile::writeError to check for errors.
+*/
+size_t SdFile::write(const char* str) {
+  return write(str, strlen(str));
+}
+#ifdef __AVR__
+//------------------------------------------------------------------------------
+/**
+   Write a PROGMEM string to a file.
+
+   Use SdFile::writeError to check for errors.
+*/
+void SdFile::write_P(PGM_P str) {
+  for (uint8_t c; (c = pgm_read_byte(str)); str++) {
+    write(c);
+  }
+}
+//------------------------------------------------------------------------------
+/**
+   Write a PROGMEM string followed by CR/LF to a file.
+
+   Use SdFile::writeError to check for errors.
+*/
+void SdFile::writeln_P(PGM_P str) {
+  write_P(str);
+  println();
+}
+#endif
+//------------------------------------------------------------------------------
+/**
+   Check how many bytes can be written without blocking.
+
+   \return The number of bytes that can be written without blocking.
+*/
+int SdFile::availableForWrite() {
+  if (!isFile() || !(flags_ & O_WRITE)) {
+    return 0;
+  }
+
+  // seek to end of file if append flag
+  if ((flags_ & O_APPEND) && curPosition_ != fileSize_) {
+    if (!seekEnd()) {
+      return 0;
+    }
+  }
+
+  if (vol_->isBusy()) {
+    return 0;
+  }
+
+  if (flags_ & F_FILE_CLUSTER_ADDED) {
+    // new cluster added, trigger a non-blocking sync
+    sync(0);
+    flags_ &= ~F_FILE_CLUSTER_ADDED;
+    return 0;
+  }
+
+  if (vol_->isCacheMirrorBlockDirty()) {
+    // cache mirror block is dirty, trigger a non-blocking sync
+    vol_->cacheMirrorBlockFlush(0);
+    return 0;
+  }
+
+  flags_ |= F_FILE_NON_BLOCKING_WRITE;
+
+  uint16_t blockOffset = curPosition_ & 0X1FF;
+  uint16_t n = 512 - blockOffset;
+
+  return n;
+}
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/SdInfo.h 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdInfo.h
new file mode 100644
index 000000000..6a0e087f4
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdInfo.h
@@ -0,0 +1,232 @@
+/* Arduino Sd2Card Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino Sd2Card Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino Sd2Card Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#ifndef SdInfo_h
+#define SdInfo_h
+#include <stdint.h>
+// Based on the document:
+//
+// SD Specifications
+// Part 1
+// Physical Layer
+// Simplified Specification
+// Version 2.00
+// September 25, 2006
+//
+// www.sdcard.org/developers/tech/sdcard/pls/Simplified_Physical_Layer_Spec.pdf
+//------------------------------------------------------------------------------
+// SD card commands
+/** GO_IDLE_STATE - init card in spi mode if CS low */
+uint8_t const CMD0 = 0X00;
+/** SEND_IF_COND - verify SD Memory Card interface operating condition.*/
+uint8_t const CMD8 = 0X08;
+/** SEND_CSD - read the Card Specific Data (CSD register) */
+uint8_t const CMD9 = 0X09;
+/** SEND_CID - read the card identification information (CID register) */
+uint8_t const CMD10 = 0X0A;
+/** SEND_STATUS - read the card status register */
+uint8_t const CMD13 = 0X0D;
+/** READ_BLOCK - read a single data block from the card */
+uint8_t const CMD17 = 0X11;
+/** WRITE_BLOCK - write a single data block to the card */
+uint8_t const CMD24 = 0X18;
+/** WRITE_MULTIPLE_BLOCK - write blocks of data until a STOP_TRANSMISSION */
+uint8_t const CMD25 = 0X19;
+/** ERASE_WR_BLK_START - sets the address of the first block to be erased */
+uint8_t const CMD32 = 0X20;
+/** ERASE_WR_BLK_END - sets the address of the last block of the continuous
+    range to be erased*/
+uint8_t const CMD33 = 0X21;
+/** ERASE - erase all previously selected blocks */
+uint8_t const CMD38 = 0X26;
+/** APP_CMD - escape for application specific command */
+uint8_t const CMD55 = 0X37;
+/** READ_OCR - read the OCR register of a card */
+uint8_t const CMD58 = 0X3A;
+/** SET_WR_BLK_ERASE_COUNT - Set the number of write blocks to be
+     pre-erased before writing */
+uint8_t const ACMD23 = 0X17;
+/** SD_SEND_OP_COMD - Sends host capacity support information and
+    activates the card's initialization process */
+uint8_t const ACMD41 = 0X29;
+//------------------------------------------------------------------------------
+/** status for card in the ready state */
+uint8_t const R1_READY_STATE = 0X00;
+/** status for card in the idle state */
+uint8_t const R1_IDLE_STATE = 0X01;
+/** status bit for illegal command */
+uint8_t const R1_ILLEGAL_COMMAND = 0X04;
+/** start data token for read or write single block*/
+uint8_t const DATA_START_BLOCK = 0XFE;
+/** stop token for write multiple blocks*/
+uint8_t const STOP_TRAN_TOKEN = 0XFD;
+/** start data token for write multiple blocks*/
+uint8_t const WRITE_MULTIPLE_TOKEN = 0XFC;
+/** mask for data response tokens after a write block operation */
+uint8_t const DATA_RES_MASK = 0X1F;
+/** write data accepted token */
+uint8_t const DATA_RES_ACCEPTED = 0X05;
+//------------------------------------------------------------------------------
+typedef struct CID {
+  // byte 0
+  uint8_t mid;  // Manufacturer ID
+  // byte 1-2
+  char oid[2];  // OEM/Application ID
+  // byte 3-7
+  char pnm[5];  // Product name
+  // byte 8
+  unsigned prv_m : 4;  // Product revision n.m
+  unsigned prv_n : 4;
+  // byte 9-12
+  uint32_t psn;  // Product serial number
+  // byte 13
+  unsigned mdt_year_high : 4;  // Manufacturing date
+  unsigned reserved : 4;
+  // byte 14
+  unsigned mdt_month : 4;
+  unsigned mdt_year_low : 4;
+  // byte 15
+  unsigned always1 : 1;
+  unsigned crc : 7;
+} cid_t;
+//------------------------------------------------------------------------------
+// CSD for version 1.00 cards
+typedef struct CSDV1 {
+  // byte 0
+  unsigned reserved1 : 6;
+  unsigned csd_ver : 2;
+  // byte 1
+  uint8_t taac;
+  // byte 2
+  uint8_t nsac;
+  // byte 3
+  uint8_t tran_speed;
+  // byte 4
+  uint8_t ccc_high;
+  // byte 5
+  unsigned read_bl_len : 4;
+  unsigned ccc_low : 4;
+  // byte 6
+  unsigned c_size_high : 2;
+  unsigned reserved2 : 2;
+  unsigned dsr_imp : 1;
+  unsigned read_blk_misalign : 1;
+  unsigned write_blk_misalign : 1;
+  unsigned read_bl_partial : 1;
+  // byte 7
+  uint8_t c_size_mid;
+  // byte 8
+  unsigned vdd_r_curr_max : 3;
+  unsigned vdd_r_curr_min : 3;
+  unsigned c_size_low : 2;
+  // byte 9
+  unsigned c_size_mult_high : 2;
+  unsigned vdd_w_cur_max : 3;
+  unsigned vdd_w_curr_min : 3;
+  // byte 10
+  unsigned sector_size_high : 6;
+  unsigned erase_blk_en : 1;
+  unsigned c_size_mult_low : 1;
+  // byte 11
+  unsigned wp_grp_size : 7;
+  unsigned sector_size_low : 1;
+  // byte 12
+  unsigned write_bl_len_high : 2;
+  unsigned r2w_factor : 3;
+  unsigned reserved3 : 2;
+  unsigned wp_grp_enable : 1;
+  // byte 13
+  unsigned reserved4 : 5;
+  unsigned write_partial : 1;
+  unsigned write_bl_len_low : 2;
+  // byte 14
+  unsigned reserved5: 2;
+  unsigned file_format : 2;
+  unsigned tmp_write_protect : 1;
+  unsigned perm_write_protect : 1;
+  unsigned copy : 1;
+  unsigned file_format_grp : 1;
+  // byte 15
+  unsigned always1 : 1;
+  unsigned crc : 7;
+} csd1_t;
+//------------------------------------------------------------------------------
+// CSD for version 2.00 cards
+typedef struct CSDV2 {
+  // byte 0
+  unsigned reserved1 : 6;
+  unsigned csd_ver : 2;
+  // byte 1
+  uint8_t taac;
+  // byte 2
+  uint8_t nsac;
+  // byte 3
+  uint8_t tran_speed;
+  // byte 4
+  uint8_t ccc_high;
+  // byte 5
+  unsigned read_bl_len : 4;
+  unsigned ccc_low : 4;
+  // byte 6
+  unsigned reserved2 : 4;
+  unsigned dsr_imp : 1;
+  unsigned read_blk_misalign : 1;
+  unsigned write_blk_misalign : 1;
+  unsigned read_bl_partial : 1;
+  // byte 7
+  unsigned reserved3 : 2;
+  unsigned c_size_high : 6;
+  // byte 8
+  uint8_t c_size_mid;
+  // byte 9
+  uint8_t c_size_low;
+  // byte 10
+  unsigned sector_size_high : 6;
+  unsigned erase_blk_en : 1;
+  unsigned reserved4 : 1;
+  // byte 11
+  unsigned wp_grp_size : 7;
+  unsigned sector_size_low : 1;
+  // byte 12
+  unsigned write_bl_len_high : 2;
+  unsigned r2w_factor : 3;
+  unsigned reserved5 : 2;
+  unsigned wp_grp_enable : 1;
+  // byte 13
+  unsigned reserved6 : 5;
+  unsigned write_partial : 1;
+  unsigned write_bl_len_low : 2;
+  // byte 14
+  unsigned reserved7: 2;
+  unsigned file_format : 2;
+  unsigned tmp_write_protect : 1;
+  unsigned perm_write_protect : 1;
+  unsigned copy : 1;
+  unsigned file_format_grp : 1;
+  // byte 15
+  unsigned always1 : 1;
+  unsigned crc : 7;
+} csd2_t;
+//------------------------------------------------------------------------------
+// union of old and new style CSD register
+union csd_t {
+  csd1_t v1;
+  csd2_t v2;
+};
+#endif  // SdInfo_h
diff --git a/arduino/ForceSensorTFT/libraries/SD/src/utility/SdVolume.cpp 
b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdVolume.cpp
new file mode 100644
index 000000000..60375c471
--- /dev/null
+++ b/arduino/ForceSensorTFT/libraries/SD/src/utility/SdVolume.cpp
@@ -0,0 +1,351 @@
+/* Arduino SdFat Library
+   Copyright (C) 2009 by William Greiman
+
+   This file is part of the Arduino SdFat Library
+
+   This Library is free software: you can redistribute it and/or modify
+   it under the terms of the GNU General Public License as published by
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
+
+   This Library is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU General Public License for more details.
+
+   You should have received a copy of the GNU General Public License
+   along with the Arduino SdFat Library.  If not, see
+   <http://www.gnu.org/licenses/>.
+*/
+#include "SdFat.h"
+//------------------------------------------------------------------------------
+// raw block cache
+// init cacheBlockNumber_to invalid SD block number
+uint32_t SdVolume::cacheBlockNumber_ = 0XFFFFFFFF;
+cache_t  SdVolume::cacheBuffer_;     // 512 byte cache for Sd2Card
+Sd2Card* SdVolume::sdCard_;          // pointer to SD card object
+uint8_t  SdVolume::cacheDirty_ = 0;  // cacheFlush() will write block if true
+uint32_t SdVolume::cacheMirrorBlock_ = 0;  // mirror  block for second FAT
+//------------------------------------------------------------------------------
+// find a contiguous group of clusters
+uint8_t SdVolume::allocContiguous(uint32_t count, uint32_t* curCluster) {
+  // start of group
+  uint32_t bgnCluster;
+
+  // flag to save place to start next search
+  uint8_t setStart;
+
+  // set search start cluster
+  if (*curCluster) {
+    // try to make file contiguous
+    bgnCluster = *curCluster + 1;
+
+    // don't save new start location
+    setStart = false;
+  } else {
+    // start at likely place for free cluster
+    bgnCluster = allocSearchStart_;
+
+    // save next search start if one cluster
+    setStart = 1 == count;
+  }
+  // end of group
+  uint32_t endCluster = bgnCluster;
+
+  // last cluster of FAT
+  uint32_t fatEnd = clusterCount_ + 1;
+
+  // search the FAT for free clusters
+  for (uint32_t n = 0;; n++, endCluster++) {
+    // can't find space checked all clusters
+    if (n >= clusterCount_) {
+      return false;
+    }
+
+    // past end - start from beginning of FAT
+    if (endCluster > fatEnd) {
+      bgnCluster = endCluster = 2;
+    }
+    uint32_t f;
+    if (!fatGet(endCluster, &f)) {
+      return false;
+    }
+
+    if (f != 0) {
+      // cluster in use try next cluster as bgnCluster
+      bgnCluster = endCluster + 1;
+    } else if ((endCluster - bgnCluster + 1) == count) {
+      // done - found space
+      break;
+    }
+  }
+  // mark end of chain
+  if (!fatPutEOC(endCluster)) {
+    return false;
+  }
+
+  // link clusters
+  while (endCluster > bgnCluster) {
+    if (!fatPut(endCluster - 1, endCluster)) {
+      return false;
+    }
+    endCluster--;
+  }
+  if (*curCluster != 0) {
+    // connect chains
+    if (!fatPut(*curCluster, bgnCluster)) {
+      return false;
+    }
+  }
+  // return first cluster number to caller
+  *curCluster = bgnCluster;
+
+  // remember possible next free cluster
+  if (setStart) {
+    allocSearchStart_ = bgnCluster + 1;
+  }
+
+  return true;
+}
+//------------------------------------------------------------------------------
+uint8_t SdVolume::cacheFlush(uint8_t blocking) {
+  if (cacheDirty_) {
+    if (!sdCard_->writeBlock(cacheBlockNumber_, cacheBuffer_.data, blocking)) {
+      return false;
+    }
+
+    if (!blocking) {
+      return true;
+    }
+
+    // mirror FAT tables
+    if (!cacheMirrorBlockFlush(blocking)) {
+      return false;
+    }
+    cacheDirty_ = 0;
+  }
+  return true;
+}
+//------------------------------------------------------------------------------
+uint8_t SdVolume::cacheMirrorBlockFlush(uint8_t blocking) {
+  if (cacheMirrorBlock_) {
+    if (!sdCard_->writeBlock(cacheMirrorBlock_, cacheBuffer_.data, blocking)) {
+      return false;
+    }
+    cacheMirrorBlock_ = 0;
+  }
+  return true;
+}
+//------------------------------------------------------------------------------
+uint8_t SdVolume::cacheRawBlock(uint32_t blockNumber, uint8_t action) {
+  if (cacheBlockNumber_ != blockNumber) {
+    if (!cacheFlush()) {
+      return false;
+    }
+    if (!sdCard_->readBlock(blockNumber, cacheBuffer_.data)) {
+      return false;
+    }
+    cacheBlockNumber_ = blockNumber;
+  }
+  cacheDirty_ |= action;
+  return true;
+}
+//------------------------------------------------------------------------------
+// cache a zero block for blockNumber
+uint8_t SdVolume::cacheZeroBlock(uint32_t blockNumber) {
+  if (!cacheFlush()) {
+    return false;
+  }
+
+  // loop take less flash than memset(cacheBuffer_.data, 0, 512);
+  for (uint16_t i = 0; i < 512; i++) {
+    cacheBuffer_.data[i] = 0;
+  }
+  cacheBlockNumber_ = blockNumber;
+  cacheSetDirty();
+  return true;
+}
+//------------------------------------------------------------------------------
+// return the size in bytes of a cluster chain
+uint8_t SdVolume::chainSize(uint32_t cluster, uint32_t* size) const {
+  uint32_t s = 0;
+  do {
+    if (!fatGet(cluster, &cluster)) {
+      return false;
+    }
+    s += 512UL << clusterSizeShift_;
+  } while (!isEOC(cluster));
+  *size = s;
+  return true;
+}
+//------------------------------------------------------------------------------
+// Fetch a FAT entry
+uint8_t SdVolume::fatGet(uint32_t cluster, uint32_t* value) const {
+  if (cluster > (clusterCount_ + 1)) {
+    return false;
+  }
+  uint32_t lba = fatStartBlock_;
+  lba += fatType_ == 16 ? cluster >> 8 : cluster >> 7;
+  if (lba != cacheBlockNumber_) {
+    if (!cacheRawBlock(lba, CACHE_FOR_READ)) {
+      return false;
+    }
+  }
+  if (fatType_ == 16) {
+    *value = cacheBuffer_.fat16[cluster & 0XFF];
+  } else {
+    *value = cacheBuffer_.fat32[cluster & 0X7F] & FAT32MASK;
+  }
+  return true;
+}
+//------------------------------------------------------------------------------
+// Store a FAT entry
+uint8_t SdVolume::fatPut(uint32_t cluster, uint32_t value) {
+  // error if reserved cluster
+  if (cluster < 2) {
+    return false;
+  }
+
+  // error if not in FAT
+  if (cluster > (clusterCount_ + 1)) {
+    return false;
+  }
+
+  // calculate block address for entry
+  uint32_t lba = fatStartBlock_;
+  lba += fatType_ == 16 ? cluster >> 8 : cluster >> 7;
+
+  if (lba != cacheBlockNumber_) {
+    if (!cacheRawBlock(lba, CACHE_FOR_READ)) {
+      return false;
+    }
+  }
+  // store entry
+  if (fatType_ == 16) {
+    cacheBuffer_.fat16[cluster & 0XFF] = value;
+  } else {
+    cacheBuffer_.fat32[cluster & 0X7F] = value;
+  }
+  cacheSetDirty();
+
+  // mirror second FAT
+  if (fatCount_ > 1) {
+    cacheMirrorBlock_ = lba + blocksPerFat_;
+  }
+  return true;
+}
+//------------------------------------------------------------------------------
+// free a cluster chain
+uint8_t SdVolume::freeChain(uint32_t cluster) {
+  // clear free cluster location
+  allocSearchStart_ = 2;
+
+  do {
+    uint32_t next;
+    if (!fatGet(cluster, &next)) {
+      return false;
+    }
+
+    // free cluster
+    if (!fatPut(cluster, 0)) {
+      return false;
+    }
+
+    cluster = next;
+  } while (!isEOC(cluster));
+
+  return true;
+}
+//------------------------------------------------------------------------------
+/**
+   Initialize a FAT volume.
+
+   \param[in] dev The SD card where the volume is located.
+
+   \param[in] part The partition to be used.  Legal values for \a part are
+   1-4 to use the corresponding partition on a device formatted with
+   a MBR, Master Boot Record, or zero if the device is formatted as
+   a super floppy with the FAT boot sector in block zero.
+
+   \return The value one, true, is returned for success and
+   the value zero, false, is returned for failure.  Reasons for
+   failure include not finding a valid partition, not finding a valid
+   FAT file system in the specified partition or an I/O error.
+*/
+uint8_t SdVolume::init(Sd2Card* dev, uint8_t part) {
+  uint32_t volumeStartBlock = 0;
+  sdCard_ = dev;
+  // if part == 0 assume super floppy with FAT boot sector in block zero
+  // if part > 0 assume mbr volume with partition table
+  if (part) {
+    if (part > 4) {
+      return false;
+    }
+    if (!cacheRawBlock(volumeStartBlock, CACHE_FOR_READ)) {
+      return false;
+    }
+    part_t* p = &cacheBuffer_.mbr.part[part - 1];
+    if ((p->boot & 0X7F) != 0  ||
+        p->totalSectors < 100 ||
+        p->firstSector == 0) {
+      // not a valid partition
+      return false;
+    }
+    volumeStartBlock = p->firstSector;
+  }
+  if (!cacheRawBlock(volumeStartBlock, CACHE_FOR_READ)) {
+    return false;
+  }
+  bpb_t* bpb = &cacheBuffer_.fbs.bpb;
+  if (bpb->bytesPerSector != 512 ||
+      bpb->fatCount == 0 ||
+      bpb->reservedSectorCount == 0 ||
+      bpb->sectorsPerCluster == 0) {
+    // not valid FAT volume
+    return false;
+  }
+  fatCount_ = bpb->fatCount;
+  blocksPerCluster_ = bpb->sectorsPerCluster;
+
+  // determine shift that is same as multiply by blocksPerCluster_
+  clusterSizeShift_ = 0;
+  while (blocksPerCluster_ != (1 << clusterSizeShift_)) {
+    // error if not power of 2
+    if (clusterSizeShift_++ > 7) {
+      return false;
+    }
+  }
+  blocksPerFat_ = bpb->sectorsPerFat16 ?
+                  bpb->sectorsPerFat16 : bpb->sectorsPerFat32;
+
+  fatStartBlock_ = volumeStartBlock + bpb->reservedSectorCount;
+
+  // count for FAT16 zero for FAT32
+  rootDirEntryCount_ = bpb->rootDirEntryCount;
+
+  // directory start for FAT16 dataStart for FAT32
+  rootDirStart_ = fatStartBlock_ + bpb->fatCount * blocksPerFat_;
+
+  // data start for FAT16 and FAT32
+  dataStartBlock_ = rootDirStart_ + ((32 * bpb->rootDirEntryCount + 511) / 512);
+
+  // total blocks for FAT16 or FAT32
+  uint32_t totalBlocks = bpb->totalSectors16 ?
+                         bpb->totalSectors16 : bpb->totalSectors32;
+  // total data blocks
+  clusterCount_ = totalBlocks - (dataStartBlock_ - volumeStartBlock);
+
+  // divide by cluster size to get cluster count
+  clusterCount_ >>= clusterSizeShift_;
+
+  // FAT type is determined by cluster count
+  if (clusterCount_ < 4085) {
+    fatType_ = 12;
+  } else if (clusterCount_ < 65525) {
+    fatType_ = 16;
+  } else {
+    rootDirStart_ = bpb->fat32RootCluster;
+    fatType_ = 32;
+  }
+  return true;
+}


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