uart

  1. N

    Help with UART multiplexing

    This is related to my question at https://www.linux.org/threads/help-with-modemmanager-and-modem-on-uart-port.55625/#post-260222, but is different. I have a SARA-R52M10 cellular+GNSS modem connected to Raspberry Pi CM4 UART3. The RPi is running Ubuntu 24.04. I have a ppp interface working fine...
    • nabelekt-vl
    • Thread
    • cellular modem multiplex multiplexing muxing raspberripi raspberry pi uart ubuntu ubuntu 24.04
    • Replies: 1
    • Forum: General Linux Topics
  2. N

    Help with ModemManager and modem on UART port

    I have a SARA-R52M10 cellular modem attached to a Raspberry Pi CM4 running Ubuntu 24.04 on UART3: root@GATEWAY-0x00000028:~# ll /dev/ttyAMA3 crw-rw---- 1 root dialout 204, 67 Feb 25 01:21 /dev/ttyAMA3 I can get responses from it fine with screen /dev/ttyAMA3 115200 or by running...
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