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    torntrousers

    @torntrousers

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    Posts made by torntrousers

    • Stuck getting started on COM.NB-IoT (SIM7020G) with Core2

      Have a new COM.NB-IoT (SIM7020G) with Core2 but can't get get anything much to work.

      Have an external 5v power supply for the COM.NB-IoT and inserted a SIM card and attached to the Core2. POwering on the external power supply starts LEDs flashing in the COM.NB-IoT and the Core2 boots up, so that looks like its all connected together properly.

      Flashing the Core2 with the EasyLoader from the COM.NB-IoT doc page and connecting a Serial Monitor shows:
      M5Stack initializing... AT+CSQ
      AT+CSQ
      AT+CSQ
      AT+CSQ
      with the AT+CSQ repeating every 10 seconds.

      So it looks like there is a problem with the serial connection to the COM.NB-IoT.

      Hunting around I found this repo: https://github.com/m5stack/M5-ProductExampleCodes/tree/master/Module/COMX_NB-IoT

      That uses #include <M5Stack.h> which doesn't appear to work with the Core2 so changing it to #include <M5Core2.h> and adding #include <AXP192.h> to fix another compile error, and
      this doc page https://shop.m5stack.com/products/com-nb-iot-modulesim7020g talks about changing:

          M5.begin();
      Serial2.begin(115200, SERIAL_8N1, 5, 13);
      

      to:

        M5.begin(true, true, true, false, kMBusModeInput);
        Serial2.begin(115200, SERIAL_8N1, 13, 14);
      

      So all that gets it compiling cleanly, but still it doesn't talk to the COMX_NB-IoT and just gets repeating AT+CSQ.

      Any help would be greatly appreciated.

      posted in Modules
      T
      torntrousers
    • AWS IoT Edukit Micropython?

      Any news on the Micropython package specifically for the Core2 for AWS IoT EduKit that was mentioned over here - https://forum.m5stack.com/topic/2679/aws-iot-edukit-core-m5-micropython-support/5

      I'm interested in using Its ATECC608 from Python.

      posted in Core2 for AWS
      T
      torntrousers