A I2S test application which procduces a sine wave output. It uses the rp2040-i2s library
You need to connect an external DAC module with the Pico:
| DAC | Pico |
|---|---|
| VCC | 5.5V (OUT) |
| GND | GND |
| BCLK | GPIO26 |
| LRCLK | GPIO27 |
| DOUT | GPIO28 |
The LRCLK can not be defined separately and is BCLK+1