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    • C
      ckuehnel
      last edited by

      There is no serial response from this unit. No answer to AT @ 115200. Any idea?

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      • felmueF
        felmue
        last edited by felmue

        Hello @ckuehnel

        could you share some additional information? E.g.

        • which M5Stack core is it connected to?
        • which Groove port are you using?
        • how do you initialize the serial connection?
        • which GPIOs are you using for TX and RX?
        • could you share your UiFlow or Arduino code?

        Also these SIM7xxx modems take some time to initialize before they react to AT commands. Try sending the AT command a couple of times.

        Thanks
        Felix

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

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