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    M5paper void disableEXTPower()

    Scheduled Pinned Locked Moved PRODUCTS
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    • H Offline
      HappyUser
      last edited by

      I am trying to understand what power is exactly being shutdown?
      Thanks

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      • felmueF Offline
        felmue
        last edited by felmue

        Hello @HappyUser

        disableEXTPower() turns off the 5 V on the three Groove ports.

        In the source code you'll find M5EPD_EXT_PWR_EN_PIN being GPIO5 and in the schematic you'll find GPIO5 being named EXT_PWR_EN which, through two MOSFETs, switches on and off VEXT_5V which in turn is going to the three Groove ports.

        You can also see that on the drawing on the backside of M5Paper. There is a circle labelled 5V EXT which is switched by a MOSFET driven by GPIO G5. And 5V EXT is also written on the 5 V pins of the Groove connectors.

        Thanks
        Felix

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

        H 1 Reply Last reply Reply Quote 0
        • H Offline
          HappyUser @felmue
          last edited by

          @felmue But that is great. That means that I can turn off the SIM7080 module during sleep mode. Ha Ha. (this topic was also addressed in another threat).
          Btw I now also read the M5EPD.h and schematic and understand your explanation. Thanks.

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          • felmueF Offline
            felmue
            last edited by

            Hello @HappyUser

            yes, that should solve the issue of how to power off (and back on) the SIM7080 unit (or any other unit for that matter).

            Thanks
            Felix

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

            1 Reply Last reply Reply Quote 0

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