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LTE strength

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  • tomT Offline
    tomT Offline
    tom
    admin
    wrote on last edited by
    #2

    You can use a variety of AT commands in order to read / write to the modem. One command that we often use to query signal strength is AT+QENG="servingcell". You can send this command and read the output to the terminal all in a single command using echo -ne "AT+QENG=\"servingcell\"\r" | busybox microcom -t 1000 /dev/ttyUSB2.

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    • Aldo Castro FreireA Offline
      Aldo Castro FreireA Offline
      Aldo Castro Freire
      Regular
      wrote on last edited by
      #3

      thank you I will try that

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      • Aldo Castro FreireA Offline
        Aldo Castro FreireA Offline
        Aldo Castro Freire
        Regular
        wrote on last edited by
        #4

        @tom said in LTE strength:

        busybox microcom -t 1000 /dev/ttyUSB2.

        Hi just one question what does this mean ? : busybox microcom -t 1000 /dev/ttyUSB2

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        • tomT Offline
          tomT Offline
          tom
          admin
          wrote on last edited by
          #5

          @Aldo-Castro-Freire microcom is a program that can be used to talk to devices over a serial port (/dev/ttyUSB2). It handles sending AT commands to the modem cleanly.

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          • Aldo Castro FreireA Offline
            Aldo Castro FreireA Offline
            Aldo Castro Freire
            Regular
            wrote on last edited by
            #6

            I also have another modem that is 5g that I would like to connect to the microusb? what device would that be ? it would be ttyUSB1 ?

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            • tomT Offline
              tomT Offline
              tom
              admin
              wrote on last edited by
              #7

              What 5g modem are you attempting to use? The drivers would need to be integrated into the kernel in order for it to be recognized.

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              • Aldo Castro FreireA Offline
                Aldo Castro FreireA Offline
                Aldo Castro Freire
                Regular
                wrote on last edited by
                #8

                I am getting "ERROR" when running this command

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                • tomT Offline
                  tomT Offline
                  tom
                  admin
                  wrote on last edited by
                  #9

                  Check here for Sierra's AT command documentation: https://source.sierrawireless.com/resources/airprime/software/airprime_wpx5xx_wp76xx_wp77xx_at_command_reference/

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                  • Aldo Castro FreireA Offline
                    Aldo Castro FreireA Offline
                    Aldo Castro Freire
                    Regular
                    wrote on last edited by
                    #10

                    I am not sure but none of the commands are running.
                    Also, it does not have the command AT+QENG for me to check out

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                    • tomT Offline
                      tomT Offline
                      tom
                      admin
                      wrote on last edited by
                      #11

                      Can you show an example output of what you are seeing? Also, which modem are you using?

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