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i2s

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This commit is contained in:
Süha Ünüvar 2025-08-08 22:39:09 +08:00
parent f2be66a5f9
commit f9da2888c4
2 changed files with 12 additions and 16 deletions
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27
embassy-stm32/src/i2s.rs
View File

@ -155,6 +155,10 @@ impl ClockPolarity {
#[non_exhaustive]
#[derive(Copy, Clone)]
pub struct Config {
/// Frequency
pub frequency: Hertz,
/// GPIO Speed
pub gpio_speed: Speed,
/// Mode
pub mode: Mode,
/// Which I2S standard to use.
@ -170,6 +174,8 @@ pub struct Config {
impl Default for Config {
fn default() -> Self {
Self {
frequency: Hertz::khz(48),
gpio_speed: Speed::VeryHigh,
mode: Mode::Master,
standard: Standard::Philips,
format: Format::Data16Channel16,
@ -243,7 +249,6 @@ impl<'d, W: Word> I2S<'d, W> {
mck: Peri<'d, impl MckPin<T>>,
txdma: Peri<'d, impl TxDma<T>>,
txdma_buf: &'d mut [W],
freq: Hertz,
config: Config,
) -> Self {
Self::new_inner(
@ -255,7 +260,6 @@ impl<'d, W: Word> I2S<'d, W> {
new_pin!(mck, AfType::output(OutputType::PushPull, Speed::VeryHigh)),
new_dma!(txdma).map(|d| (d, txdma_buf)),
None,
freq,
config,
Function::Transmit,
)
@ -269,7 +273,6 @@ impl<'d, W: Word> I2S<'d, W> {
ck: Peri<'d, impl CkPin<T>>,
txdma: Peri<'d, impl TxDma<T>>,
txdma_buf: &'d mut [W],
freq: Hertz,
config: Config,
) -> Self {
Self::new_inner(
@ -281,7 +284,6 @@ impl<'d, W: Word> I2S<'d, W> {
None,
new_dma!(txdma).map(|d| (d, txdma_buf)),
None,
freq,
config,
Function::Transmit,
)
@ -296,7 +298,6 @@ impl<'d, W: Word> I2S<'d, W> {
mck: Peri<'d, impl MckPin<T>>,
rxdma: Peri<'d, impl RxDma<T>>,
rxdma_buf: &'d mut [W],
freq: Hertz,
config: Config,
) -> Self {
Self::new_inner(
@ -308,7 +309,6 @@ impl<'d, W: Word> I2S<'d, W> {
new_pin!(mck, AfType::output(OutputType::PushPull, Speed::VeryHigh)),
None,
new_dma!(rxdma).map(|d| (d, rxdma_buf)),
freq,
config,
Function::Receive,
)
@ -327,7 +327,6 @@ impl<'d, W: Word> I2S<'d, W> {
txdma_buf: &'d mut [W],
rxdma: Peri<'d, impl RxDma<T>>,
rxdma_buf: &'d mut [W],
freq: Hertz,
config: Config,
) -> Self {
Self::new_inner(
@ -339,7 +338,6 @@ impl<'d, W: Word> I2S<'d, W> {
new_pin!(mck, AfType::output(OutputType::PushPull, Speed::VeryHigh)),
new_dma!(txdma).map(|d| (d, txdma_buf)),
new_dma!(rxdma).map(|d| (d, rxdma_buf)),
freq,
config,
Function::FullDuplex,
)
@ -473,17 +471,16 @@ impl<'d, W: Word> I2S<'d, W> {
mck: Option<Peri<'d, AnyPin>>,
txdma: Option<(ChannelAndRequest<'d>, &'d mut [W])>,
rxdma: Option<(ChannelAndRequest<'d>, &'d mut [W])>,
freq: Hertz,
config: Config,
function: Function,
) -> Self {
ws.set_as_af(ws.af_num(), AfType::output(OutputType::PushPull, Speed::VeryHigh));
ck.set_as_af(ck.af_num(), AfType::output(OutputType::PushPull, Speed::VeryHigh));
ws.set_as_af(ws.af_num(), AfType::output(OutputType::PushPull, config.gpio_speed));
ck.set_as_af(ck.af_num(), AfType::output(OutputType::PushPull, config.gpio_speed));
let spi = Spi::new_internal(peri, None, None, {
let mut config = SpiConfig::default();
config.frequency = freq;
config
let mut spi_config = SpiConfig::default();
spi_config.frequency = config.frequency;
spi_config
});
let regs = T::info().regs;
@ -493,7 +490,7 @@ impl<'d, W: Word> I2S<'d, W> {
#[cfg(not(all(rcc_f4, not(stm32f410))))]
let pclk = T::frequency();
let (odd, div) = compute_baud_rate(pclk, freq, config.master_clock, config.format);
let (odd, div) = compute_baud_rate(pclk, config.frequency, config.master_clock, config.format);
#[cfg(any(spi_v1, spi_v3, spi_f1))]
{

1
examples/stm32f4/src/bin/i2s_dma.rs
View File

@ -72,7 +72,6 @@ async fn main(_spawner: Spawner) {
p.PB3, // ck
p.DMA1_CH7,
&mut dma_buffer,
Hertz(48_000),
i2s_config,
);
i2s.start();