Greetings, I've often asked users I'm helping with modem support on Linux to use GNU screen to issue AT commands to modems to get their details (ie ATI), however I've noticed this doesn't work for me anymore on perhaps newer modems and I'm guessing its related to a missing stty setting relative to CRLF.
So the following works from bootup on an MC8790 for example: # echo -e "ATI\r\n" > /dev/ttyUSB3 # cat /dev/ttyUSB3 ATI Manufacturer: Sierra Wireless, Inc. Model: MC8790 Revision: K1_0_2_8AP C:/WS/FW/K1_0_2_8AP/MSM6290/SRC 2008/09/17 14:00:22 IMEI: 352974021856935 IMEI SV: 3 FSN: D661380183210 3GPP Release 6 +GCAP: +CGSM,+DS,+ES OK ^C However if I use 'screen /dev/ttyUSB3 57600,cs8' I find that AT commands are never recognized - I get no response from the modem as if it didn't catch the right line termination. Any ideas as to what's going on here and how I could use screen and/or stty to resolve it or what the proper stty settings are to avoid this. Regards, Tim Tim Harvey - Principal Software Engineer Gateworks Corporation - http://www.gateworks.com/ 3026 S. Higuera St. San Luis Obispo CA 93401 805-781-2000 _______________________________________________ screen-users mailing list [email protected] https://lists.gnu.org/mailman/listinfo/screen-users
