ESP32 DAC

[ahreenah]

How do I play sound using ESP32 internal DAC? How to configure AudioOutput? Which AudioOutputClass to use? Thanks in advance

[s-hadinger]

It's already written in the documentation

To use the internal DAC on ESP32, instantiate this class as AudioOutputI2S(0,1), see example PlayMODFromPROGMEMToDAC and code in AudioOutputI2S.cpp for details.

[trullock]

Whats missing from the docs is what pins to use, which are:

  bclkPin = 26;
  wclkPin = 25;
  doutPin = 22;

[sudarshann]

@trullock Could you kindly explain where and how to define or initilise these pins

Thanks

[trullock]

@sudarshann These are already defined (hard coded) inside this library, see here https://github.com/earlephilhower/ESP8266Audio/blob/9dd4f24056821a2591f825c743d152bab862984a/src/AudioOutputI2S.cpp#L46

[sudarshann]

Thanks I managed to set something like this for M5stack Atom Echo

out = new AudioOutputI2S(); out->SetPinout(19, 33, 22);

[s-hadinger]

M5stack Atom Echo has an external I2S chip and does not use ESP32 internal DAC