Bluetooth A2DP Sink implementation for Raspberry Pi Pico W using BTStack. This is nothing more than the example from BTStack repo, cleaned up from the redundant code and modularized for better readability.
Audio output is done via I2S bus implemented using PIO block and fed with data by chained DMA double-buffering mechanism.
- A2DP Sink implementation using BTStack
- Advertises as Audio Class Loudspeaker (CoD 0x200414)
- I2S audio output
- Modularized code for better readability and easier modifications
| Signal | Board GPIO pin |
|---|---|
| SDO | GP28 |
| LRCLK | GP27 |
| BCLK | GP26 |