Connections:
| I2S2 | STM32 |
|---|---|
| MCLK | I2S2_MCK (PC6) |
| LRCK | I2S2_WS (PB12) |
| SCLK | I2S2_CK (PB10) |
| SDOUT | I2S2_ext_SD (PC3) |
| SDIN | I2S2_SD (PC3) |
| GND | GND |
| VCC | 3.3V |
MCLK, LRCK and SCLK of ADC and DAC are connected in parallel.
Basic I2S DMA setup according to blogpost by AudioDspLab.
Audio Configuration:
- 24 bit stereo @ 48kHz, ADC + DAC
Hint: STM32CubeMx calls DMA initialization function MX_DMA_Init in the wrong order. DMA will not work unless this is changed manually (Run MX_DMA_Init before MX_I2S2_Init).