This rust project is an example of i2s usage on a stm32f411 chip. It use this protocol to output a sawtooth on a pcm5102 module. Warning! Reduce the volume, the sawtooth is fullscale so it's very loud!
At time of this project, there is no Hardware Abstraction Layer for i2s.
Instead, the main source directly access to the hadware using pac module,
this is why it contains many unsafe sections.
This project is for a nucleo-f411re but should be easily adaptable for any stm32f4xx using a 8Mhz external oscillator. To Adapt it, you need:
- Change ram an flash in
memory.xaccording to your device. - In
Cargo.toml, underdependencies.stm32f4xx-halreplace thestm32f411feature according to your chip (See here for available chips). - In
Embed.toml, underdefault.general, replacechipvalue by your chip (cargo embed --list-chipto get the list of possible value).
| pcm5102 | stm32f4xx |
|---|---|
| VIN | 3V3 |
| GND | GND |
| LCK | PB12 |
| DIN | PB15 |
| BCK | PB13 |
| SCK | PC6 |
| FLT | 3V3 or GND |
| DEMP | GND |
| XSMP | 3V3 |
| FMT | GND |
| A3V3 | 3V3 |
| AGND | GND |
This require cargo embed, you can install it with cargo install cargo-embed.
Just run cargo embed to build, load, and run the firmware.
This project is licensed under terms of both MIT and Apache licenses. See LICENSE-APACHE.txt and LICENSE-MIT.txt.