🤖Have you ever tried Chat.M5Stack.com before asking??😎
    M5Stack Community
    • Categories
    • Recent
    • Tags
    • Popular
    • Users
    • Groups
    • Search
    • Register
    • Login

    AXP192 interrupt output not used

    Core 2
    2
    3
    5.5k
    Loading More Posts
    • Oldest to Newest
    • Newest to Oldest
    • Most Votes
    Reply
    • Reply as topic
    Log in to reply
    This topic has been deleted. Only users with topic management privileges can see it.
    • felmueF
      felmue
      last edited by

      Hi M5Stack guys

      looking at the M5Core2 schematic I realised that the AXP192 interrupt output is not used and not connected to any ESP32 GPIO.

      I am asking because M5Stick and M5Stick Plus have its AXP192 interrupt output connected to ESP32 GPIO35.

      What is the reason you decided not to use the AXP192 interrupt output in the M5Core2 device? Technical issue? Oversight?

      0_1608021166629_M5Core2Axp192IntNotConnected.png

      Thanks
      Felix

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

      1 Reply Last reply Reply Quote 0
      • ZontexZ
        Zontex
        last edited by

        Hi @felmue, yes after asking our engineer it seems to be a hardware limitation on the new Core2 this is due to the GPIO pins from the ESP32 must be used for other purposes so couldn't be assigned to the IRQ pin.

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

          Hello @Zontex

          Understood. Thank you for checking.

          Maybe it could still be wired to a GPIO, but via a solder bridge, so it could be used optionally?

          Anyways, I've soldered a wire from AXP IRQ to ESP32 GPIO35. I can detect now when USB (aka ACIN) has been connected or disconnected while ESP32 is in light sleep and use that to wake up.

          Cheers
          Felix

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

          1 Reply Last reply Reply Quote 2
          • First post
            Last post