Hi Sylvain, thanks for that, already getting somewhere. Here are last several lines from strace output:
open("/dev/ttyUSB0", O_RDWR|O_NOCTTY) = 3 14:21:07.712932 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo ...}) = 0 14:21:07.713657 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 opost isig icanon echo ...}) = 0 14:21:07.713847 ioctl(3, SNDCTL_TMR_START or TCSETS, {B115200 -opost -isig -icanon -echo ...}) = 0 14:21:07.715039 ioctl(3, SNDCTL_TMR_TIMEBASE or TCGETS, {B115200 -opost -isig -icanon -echo ...}) = 0 14:21:07.715261 ioctl(3, TIOCMBIS, [TIOCM_DTR|TIOCM_RTS]) = -1 EPIPE (Broken pipe) 14:21:07.717054 close(3) = 0 14:21:07.720986 write(2, "Cannot open serial device /dev/t"..., 39Cannot open serial device /dev/ttyUSB0
I got -1 at ioctl(3, TIOCMBIS, [TIOCM_DTR|TIOCM_RTS]) (Broken pipe). But it was actually able to open "/dev/ttyUSB0" (returned 3). Have to find out what -1 means at this point.
Date: Tue, 11 Jun 2013 11:21:23 +0200 Subject: Re: Cannot open serial device /dev/ttyUSB0 From: 246tnt@gmail.com To: gandguladze@hotmail.com CC: baseband-devel@lists.osmocom.org
On Tue, Jun 11, 2013 at 10:44 AM, George Andguladze gandguladze@hotmail.com wrote:
I can read/write baud rates to EEPROM of the device using cp210x-program. Basically I have tried everything apart from reinstalling the OS (Ubuntu 10.04). What might be the issue? (for more info refer to the older conversations)
Try to strace it.
strace osmocon ....
Cheers,
Sylvain