Re: [Ftdi-usb-sio-devel] about XON/XOFF

[Bill R. <bil...@gm...>]

Usually you use the kernel serial stack to handle xon/off

Search google for

termios xon

eg
http://homepages.cwi.nl/~aeb/linux/man2html/man3/termios.3.html
and
http://en.wikibooks.org/wiki/Serial_Programming/termios


for example.



On Thu, Jul 8, 2010 at 11:44 AM, Tao Jin <jin...@gm...> wrote:

> Dear all,
>
> I have a question about serial software flow control.  Here is my
> experiment setup.
>
> PC < ---- > serial device
>
> PC1 talks to serial device through minicom.
>
> When I send a byte in minicom, the serial device toggle LED to
> indicate the reception of new byte
>
> When serial device receives up to 10 byte, serial device sends
> XOFF(0x13) byte to PC.
>
> I have already enabled software flow control in minicom, so I expect
> that next time when I send another byte from minicom, the serial
> device is NOT supposed to receive anything.  b/c the serial driver
> received XOFF earlier.
>
> But XOFF doesn't work for me.
>
> My question is should my program takes care of XOFF?  or the serial
> driver actually takes care of that automatically?
>
> thanks a lot in advance!
>
> jintao
>
>
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