Hallo Jeffrey, On Thu, Feb 14, 2019 at 02:06:35PM -0500, Jeffrey Walton wrote: > Hi Everyone, > > I'm having trouble using a USB modem. It is a Conexant modem but it is > not responding to AT commands. Sample code is at > https://pastebin.com/84YUn9ey . > > I think the first thing I need to do is verify the kernel > configuration for the device. For that: > > $ sudo setserial -a /dev/ttyACM0 > /dev/ttyACM0, Line 0, UART: unknown, Port: 0x0000, IRQ: 0 > Baud_base: 115200, close_delay: 12, divisor: 0 > closing_wait: 750 > Flags: spd_normal > > At this point I think I need to read some kernel docs. I'm not sure if > I should be in https://www.kernel.org/doc/Documentation/serial or > https://www.kernel.org/doc/Documentation/usb . Looking through the > pages nothing jumps out as specific to the Conexant.
Maybe these could be interesting? https://www.kernel.org/doc/Documentation/usb/acm.txt https://www.kernel.org/doc/Documentation/usb/gadget_serial.txt > > Can someone suggest what my next steps are to verify the modem's > configuration with respect to the kernel and driver? > > Thanks in advance. Best regards, Thorsten > > _______________________________________________ > Kernelnewbies mailing list > [email protected] > https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies _______________________________________________ Kernelnewbies mailing list [email protected] https://lists.kernelnewbies.org/mailman/listinfo/kernelnewbies
