embassy/examples/stm32l4/src/bin/i2c.rs
2022-01-19 17:59:55 +01:00

28 lines
724 B
Rust

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
#[path = "../example_common.rs"]
mod example_common;
use embassy::executor::Spawner;
use embassy_stm32::dma::NoDma;
use embassy_stm32::i2c::I2c;
use embassy_stm32::interrupt;
use embassy_stm32::time::Hertz;
use embassy_stm32::Peripherals;
use example_common::{info, unwrap};
const ADDRESS: u8 = 0x5F;
const WHOAMI: u8 = 0x0F;
#[embassy::main]
async fn main(_spawner: Spawner, p: Peripherals) -> ! {
let irq = interrupt::take!(I2C2_EV);
let mut i2c = I2c::new(p.I2C2, p.PB10, p.PB11, irq, NoDma, NoDma, Hertz(100_000));
let mut data = [0u8; 1];
unwrap!(i2c.blocking_write_read(ADDRESS, &[WHOAMI], &mut data));
info!("Whoami: {}", data[0]);
}