embassy/examples/stm32l4/src/bin/i2c.rs

35 lines
792 B
Rust
Raw Normal View History

2021-10-20 10:11:34 +02:00
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
2021-10-20 10:11:34 +02:00
use embassy_stm32::dma::NoDma;
use embassy_stm32::i2c::I2c;
use embassy_stm32::interrupt;
2021-10-20 10:11:34 +02:00
use embassy_stm32::time::Hertz;
2022-06-12 22:15:44 +02:00
use {defmt_rtt as _, panic_probe as _};
2021-10-20 10:11:34 +02:00
const ADDRESS: u8 = 0x5F;
const WHOAMI: u8 = 0x0F;
#[embassy_executor::main]
async fn main(_spawner: Spawner) -> ! {
let p = embassy_stm32::init(Default::default());
2021-10-20 10:11:34 +02:00
let irq = interrupt::take!(I2C2_EV);
2022-08-09 21:13:35 +02:00
let mut i2c = I2c::new(
p.I2C2,
p.PB10,
p.PB11,
irq,
NoDma,
NoDma,
Hertz(100_000),
Default::default(),
);
2021-10-20 10:11:34 +02:00
let mut data = [0u8; 1];
unwrap!(i2c.blocking_write_read(ADDRESS, &[WHOAMI], &mut data));
2021-10-20 10:11:34 +02:00
info!("Whoami: {}", data[0]);
}