Xdot in Linux only ttyACM0 is created there is no ACM1

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  • March 24, 2018 at 7:07 am #22925
    Silva
    Participant

    Hello,

    When I connect my xDot to Ubuntu only ttyACM0 is created. There is no ACM1. Any ideias why ?

    When I plug the module a drive is created with XDOT name. Everything appears OK. But there is no ACM1. As far as I can see putty sends data to the ttyACM0 cause a led starts to blink every char I enter.

    But how can I sent AT commands via usb port ? Shouldn’t it be the ACM1 the feedback port ?

    Thank you!

    March 24, 2018 at 12:22 pm #22926
    Jason Reiss
    Keymaster

    Install exar driver

    Configuration Mode

    March 24, 2018 at 2:52 pm #22927
    Silva
    Participant

    Jason, I’m using Ubuntu. I think there is no need for driver,yes ?
    Thanks.

    March 24, 2018 at 11:32 pm #22928
    Jason Reiss
    Keymaster

    https://www.exar.com/design-tools/software-drivers

    April 7, 2018 at 2:22 am #23038
    alejandro ballesta
    Participant

    Hi Silva,

    don’t know if you’ve solved your problem yet.
    I found the same issue when migrating from ubuntu 12 to 16.
    The problem is ubuntu 16 (i think 14 also) does not associate the usb:pidvid (the exar one) to the cdc_acm driver automatically.
    You can try to modify the udev rules (hard and i cannot make it work correctly), or you can do it manually.
    As sudo (maybe sudo su) execute the next line. Sudo doesnot behave well with echo

    echo “04e2 1410” >/sys/bus/usb/drivers/cdc_acm/new_id

    check your “vid pid” in with lsusb. Write down “bus XXX device YYY”
    check driver loaded with lsusb -t, found “bus XXX” and the leaf “device YYY”.

    Hope it helps

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