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    CATM + GNSS - Cannot complete connect AT commands

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    • S
      Steven010
      last edited by

      Hello all, I have used other CATM modems before (Nordic, U-Blox), I am hoping the M5 will outperform the others I have tried. I have bought several M5 modems and deployed to my team, along with activated Hologram cards. First, I am trying to set up and do "hello world" over network. Either by reaching the Hologram pseudo server ore being able to send SMS to even one endpoint phone on common carrier network in USA (ATT, Verizon, T-mobile).

      Here is how far I have reached and AT commands used;
      ATE
      AT+CFUN=1
      AT+CNMP=38
      AT+CMNB=1

      AT_CREG:0,5 > roaming on
      Network (new)

      AT+CSQ
      +CSQ: 27,99 > Antenna Strength

      AT+CGATT=1 > test data connection
      OK

      Now here is where I cannot get past;

      AT+CIICR > error

      I have tried many other of the connection AT commands, I cannot get any further that above. Again, ether sending SMS or reaching Hologram Psuedo Server would suffice, no luck so far.

      Can anyone point me to a complete AT list of confirmed commands that will complete some sort of end-to-end communication?

      felmueF 1 Reply Last reply Reply Quote 0
      • felmueF
        felmue @Steven010
        last edited by felmue

        Hello @Steven010

        have you tried to follow the examples given in the documents listed here?

        From what I can tell your modem is connected to LTE-M1 but with AT+CIICR (a command that doesn't exist for SIM7080G) you try to setup GPRS which doesn't match LTE.

        Have a look at for instance the document explaining a TCP/UDP connection. I think your next command should probably be AT+CNACT=0,1 to activate a PDP and then AT+CNACT? to check for an IP address. And then go from there.

        Thanks
        Felix

        GPIO translation table M5Stack / M5Core2
        Information about various M5Stack products.
        Code examples

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