Supported Architectures

Unfortunately Arduino does not provide an I2S functionality which is standardized across the different processors. There is only an official documentation for SAMD21 processors. The full functionality of the library is currently only available on the ESP32:

Processor	I2S-in	I2S-out	ADC	DAC	A2DP	URLStream	PWM	Other
ESP32	+	+	+	+	+	+	*	+
ESP32-S2	*	*				+	*	+
ESP32-C2	*	*				+	*	+
ESP32-C3	+	+				+	*	+
ESP8266	*	*	*	*		*		+
SAMD21	*	*						+
Raspberry Pico	(2)	+				+	+	+
Nano BLE(MBED)	*	+	(1)				+	+
UNO R4			+	+		+ (3)	+	+

Legend:

• supported +
• supported but not tested *
• (1) Using the AudioMP34DT05 class
• (2) Not with MBED
• (3) Too slow for audio