diff options
Diffstat (limited to 'examples')
| -rw-r--r-- | examples/stm32l4/src/bin/i2c_dma.rs | 35 |
1 files changed, 35 insertions, 0 deletions
diff --git a/examples/stm32l4/src/bin/i2c_dma.rs b/examples/stm32l4/src/bin/i2c_dma.rs new file mode 100644 index 000000000..b0596aab8 --- /dev/null +++ b/examples/stm32l4/src/bin/i2c_dma.rs | |||
| @@ -0,0 +1,35 @@ | |||
| 1 | #![no_std] | ||
| 2 | #![no_main] | ||
| 3 | #![feature(type_alias_impl_trait)] | ||
| 4 | |||
| 5 | #[path = "../example_common.rs"] | ||
| 6 | mod example_common; | ||
| 7 | |||
| 8 | use embassy::executor::Spawner; | ||
| 9 | use embassy::traits::i2c::I2c as I2cTrait; | ||
| 10 | use embassy_stm32::i2c::I2c; | ||
| 11 | use embassy_stm32::interrupt; | ||
| 12 | use embassy_stm32::time::Hertz; | ||
| 13 | use embassy_stm32::Peripherals; | ||
| 14 | use example_common::{info, unwrap}; | ||
| 15 | |||
| 16 | const ADDRESS: u8 = 0x5F; | ||
| 17 | const WHOAMI: u8 = 0x0F; | ||
| 18 | |||
| 19 | #[embassy::main] | ||
| 20 | async fn main(_spawner: Spawner, p: Peripherals) -> ! { | ||
| 21 | let irq = interrupt::take!(I2C2_EV); | ||
| 22 | let mut i2c = I2c::new( | ||
| 23 | p.I2C2, | ||
| 24 | p.PB10, | ||
| 25 | p.PB11, | ||
| 26 | irq, | ||
| 27 | p.DMA1_CH4, | ||
| 28 | p.DMA1_CH5, | ||
| 29 | Hertz(100_000), | ||
| 30 | ); | ||
| 31 | |||
| 32 | let mut data = [0u8; 1]; | ||
| 33 | unwrap!(i2c.write_read(ADDRESS, &[WHOAMI], &mut data).await); | ||
| 34 | info!("Whoami: {}", data[0]); | ||
| 35 | } | ||
