On 01/16/2015 03:48 AM, philippe.frossard wrote: > Hi, > I have a problem when I connect P9.24 (ttyO1.TX) with P9.26 (ttyO1.RX), > If I send data on serial port like this : echo 1 > /dev/ttyO1 > And read data on serial port like this : cat /dev/ttyO1 > The command output a lot of data indefinitely ... and my ssh link doesn't > respond, > If I remove the jumper the system come back ... > What wrong ? > > Same problem with ttyO2, > Same problem with ttyO1 connected to ttyO2 > > I'm using kernel 3.8.13-bone69 (trying also 40 and 47) with debian 7.7,
The initial state for all ttys in Linux is ECHO. When you setup loopback, you need to turn echo off. stty -a -F /dev/ttyO1 will show you the current termios settings for the port. See "man termios" for the manual on Linux terminal control. Regards, Peter Hurley -- For more options, visit http://beagleboard.org/discuss --- You received this message because you are subscribed to the Google Groups "BeagleBoard" group. To unsubscribe from this group and stop receiving emails from it, send an email to beagleboard+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
