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    ADC1 and ADC2 pins

    Scheduled Pinned Locked Moved LoPy
    lopyldradc
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    • M Offline
      MrMarty77
      last edited by

      alt text
      We've hooked up 16 LDR's to the LoPy's ADC GPIO pins. But we've so far only managed to make 8 of them work (P13-P20). These pins are all labeled ADC1_X.

      We can't seem to find any documentation about how to initialize the ADC2_X pins. Can anyone help us out?

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      • J Offline
        jmarcelino @MrMarty77
        last edited by jmarcelino

        @MrMarty77
        Only ADC1 is supported at the moment, the core ESP32 SDK doesn't support it yet, it may take a while:

        https://github.com/espressif/esp-idf/pull/466

        Fyi, we're a bit hesitant to make ADC2 available because it is also used for pretty important control loops inside the WiFi (and maybe BT, I don't remember) drivers. We want to make sure there's no chance of these and the user ADC calls to interfere with each other.

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