ESP32 ADC2

[Yuggo Ouchi]

Hi, i want to use the adc1 and adc2 channels from esp32 integrated with the bluetooth, i'm using the spp_counter as a base code, this is the repo with the code:

https://github.com/Yuggo1/ESP_Gloves

The code to support the adc2 i've got from here https://github.com/ESP32DE/esp-idf/commit/f467f68ff50d679ac4004eea2dcaa812d50912a7

and it works when using it without the bluetooth, i read here https://github.com/espressif/arduino-esp32/issues/102 that ADC2 conflicts only with the wifi, but i'm getting the same problem using the bluetooth, does anyone know if btstack uses some wifi resources that could cause this error, or could help me to look where the ADC2 code conflicts with the btstack?

Best Regards

[Matthias Ringwald]

Hi Yuggo

I don't know but Bluetooth and Wifi use the same 2.4 GHz radio range and therefore they usually at least share the antenna if not more. Unless proven otherwise, you can assume that if something hardware related causes problems with Wifi will also cause similar issues with Bluetooth.

The issue you've linked to mentions that it depend on the pin used. Could you try different pins to see if you can find a second one that works with Wifi & Bluetooth?

BTstack doesn't know anything about hardware, it mainly calls the Virtual HCI (VHCI) API of the esp-idf.

Best

 Matthias

 

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