[chronojump] chronopicRegister finds COM port on Windows

[Xavier de Blas <xaviblas src gnome org>]

commit ab9544d34fb4685e2aed2dac9bbedd214b9724c0
Author: Xavier de Blas <xaviblas gmail com>
Date:   Sat Oct 1 11:54:01 2016 +0200

    chronopicRegister finds COM port on Windows

 src/chronopicRegister.cs |   19 ++++++++++++++++++-
 1 files changed, 18 insertions(+), 1 deletions(-)
---
diff --git a/src/chronopicRegister.cs b/src/chronopicRegister.cs
index 65d930e..dff4bbb 100644
--- a/src/chronopicRegister.cs
+++ b/src/chronopicRegister.cs
@@ -359,7 +359,7 @@ public class ChronopicRegisterWindows : ChronopicRegister
                                LogB.Information(String.Format("Serial Number: " + 
ftdiDeviceList[i].SerialNumber.ToString()));
                                LogB.Information(String.Format("Description: " + 
ftdiDeviceList[i].Description.ToString()));
 
-                               string port = "????"; //TODO
+                               string port = getComPort(ftdiDeviceList[i]);
                                ChronopicRegisterPort crp = new ChronopicRegisterPort(port);
                                crp.FTDI = true;
                                crp.SerialNumber = ftdiDeviceList[i].SerialNumber.ToString();
@@ -369,5 +369,22 @@ public class ChronopicRegisterWindows : ChronopicRegister
                        }
                }
        }
+
+       private string getComPort(FTDI.FT_DEVICE_INFO_NODE node)
+       {
+               string comport = "";
+               
//http://stackoverflow.com/questions/2279646/finding-usb-serial-ports-from-a-net-application-under-windows-7
+               if (ftdiDeviceWin.OpenByLocation(node.LocId) == FTDI.FT_STATUS.FT_OK)
+               {
+                       try {
+                               ftdiDeviceWin.GetCOMPort(out comport);
+                       }
+                       finally {
+                               ftdiDeviceWin.Close();
+                       }
+               }
+
+               return comport;
+       }
 }