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by tcfx44
Sun Sep 28, 2025 8:57 am
Forum: ESP32 Arduino
Topic: Unexpected interrupt on GPIO39 (SENSOR_VN) when reading ADC on GPIO 27
Replies: 0
Views: 2867

Unexpected interrupt on GPIO39 (SENSOR_VN) when reading ADC on GPIO 27

I'm using ESP32-WROOM-32E with platformio, platform = espressif32, current espressif 32 platform version is 6.12.0.

I'm receiving an interrupt on gpio 39 every time I read the ADC on gpio 27. I do have an external pullup to 3.3v on gpio 39 pin.

What migh be the reason for this behaviour and is ...

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