AnalogAudioStream from ADC2

[pauldupuyjr]

I'm attempting to use an AnalogAudioStream configured for input from ADC2_CH0. I can override the default ADC with #define ADC_UNIT ADC_UNIT_2 and am trying to figure out the other configuration settings to get usable values. I see this comment in "AnalogConfigESP32V1.h" though: // continuous ADC API should run on ADC1. Is it feasible to use ADC2 for AnalogAudioStream input? Thanks in advance,

[pschatzmann]

Please read the Espressif documentation: if I remember right it can not be used when WiFi is active and there are a lot of other restrictions...
I have added the adc_unit to the attributes.

[pauldupuyjr]

It looks possible but not reliable according to Espressif: "On ESP32C3 and ESP32S3, ADC2 Digital Controller is not stable. Therefore, ADC2 continuous mode is not suggested on ESP32S3 and ESP32C3 If you stick to this, you can enable this option to force use ADC2": CONFIG_ADC_CONTINUOUS_FORCE_USE_ADC2_ON_C3_S3 (https://docs.espressif.com/projects/esp-idf/en/latest/esp32s3/api-reference/kconfig-reference.html#config-adc-continuous-force-use-adc2-on-c3-s3).