Re: use gio with serialport

[Matrix <zhangcheng cgmobile com cn>]

thanks a lot for you two...

i had some ideas for how to do later...


在 2014/9/24 3:13, Göran Hasse 写道:
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> This task is infact MUTCH more complicated than you can
> imagine.
>
> First you have to program the serial chip to
> send and receive bytes when sertain amount of bytes
> have been put in its buffer. The serial device driver
> can also been programmed to timeout if the buffer is
> not full. Then you have to consider this for booth outgooing
> and incomming characters.
>
> I recommend that you read chapter 18 "A modem dialer" in "Advanced Programming
> in the UNIX environment" ISBN-0-201-56317-7. g_unix_input_stream... works good for
> a TCP/IP stream but NOT for hardware oriented stuff.
>
> /gh
>
> Den 2014-09-23 09:48, Matrix skrev:
> > Hi,
> >
> > i'm writing an app which used to auto test AT commands...
> >
> > i open fd with the /dev/ttyS0, and pass it to g_unix_input_stream_new
> >
> > the qustion is how read the buf as line by line ?
> >
> > because of the buffer size is 4K, if directly use g_data_input_stream_read_line, it will block forever,
> >
> > and then i use g_buffered_input_stream_set_buffer_size to change the buffer size to 1 byte
> >
> > it works, but it should be not efficient
> >
> > and good ideas for this ?
> >
> > thanks, and sorry for my bad english....
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> - -- 
> Göran Hasse
> Raditex Control AB
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> email: gorhas raditex nu
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