On Tue, Jun 14, 2016 at 08:27:30PM +0530, shishir tiwari wrote:
> Hi ,
> 
> We are trying to open and close ttyUSB0 port and using 'chat' command
> to communicate in while loop using shell script.but after 30-40 times
> '#' reply is not coming for 'ls' command.
> 
> shell script::
> while
> (
> stty -F /dev/ttyUSB0 115200 -echo
> exec > /dev/ttyUSB0
> exec < /dev/ttyUSB0
> chat '' ls '#'
> )
> result =$?
> 
> platform : custom
> serial driver : pl2303
> host controller :xhci

What kernel version is this?  Are there any kernel logs showing any
errors?  What flow control have you set for this serial port?

thanks,

greg k-h
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