https://github.com/lefucjusz/pico-w-a2dp-sink

Bluetooth A2DP Sink implementation for Raspberry Pi Pico W using BTStack.
https://github.com/lefucjusz/pico-w-a2dp-sink

a2dp audio bluetooth i2s rpi-pico-w

Last synced: 2 months ago
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Bluetooth A2DP Sink implementation for Raspberry Pi Pico W using BTStack.

• Host: GitHub
• URL: https://github.com/lefucjusz/pico-w-a2dp-sink
• Owner: Lefucjusz
• License: gpl-3.0
• Created: 2025-03-02T19:46:26.000Z (3 months ago)
• Default Branch: master
• Last Pushed: 2025-03-05T18:24:52.000Z (2 months ago)
• Last Synced: 2025-03-05T19:24:46.345Z (2 months ago)
• Topics: a2dp, audio, bluetooth, i2s, rpi-pico-w
• Language: C
• Homepage:
• Size: 32.2 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# Pico-W-A2DP-Sink

Bluetooth A2DP Sink implementation for Raspberry Pi Pico W using BTStack. This is nothing more than [the example from BTStack repo](https://github.com/bluekitchen/btstack/blob/master/example/a2dp_sink_demo.c), 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.

## Functionalities

* A2DP Sink implementation using BTStack

* Advertises as Audio Class Loudspeaker (CoD 0x200414)

* I2S audio output

* Modularized code for better readability and easier modifications

# Connections

## I2S

| Signal | Board GPIO pin |

|--------|----------------|

| SDO    | GP28           |

| LRCLK  | GP27           |

| BCLK   | GP26           |