embassy/examples/stm32f4/src/bin/can.rs

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2021-08-06 00:08:24 +02:00
#![no_std]
#![no_main]
#![feature(trait_alias)]
#![feature(type_alias_impl_trait)]
#![allow(incomplete_features)]
#[path = "../example_common.rs"]
mod example_common;
use cortex_m_rt::entry;
use embassy_stm32::bxcan::{Can, Frame, StandardId};
use embassy_stm32::dbgmcu::Dbgmcu;
use example_common::*;
#[entry]
fn main() -> ! {
info!("Hello World!");
unsafe {
Dbgmcu::enable_all();
}
let p = embassy_stm32::init(Default::default());
let mut can = Can::new(p.CAN1, p.PA11, p.PA12);
can.modify_config().set_loopback(true);
unwrap!(nb::block!(can.enable()));
let mut i: u8 = 0;
loop {
let tx_frame = Frame::new_data(unwrap!(StandardId::new(i as _)), [i]);
unwrap!(nb::block!(can.transmit(&tx_frame)));
while !can.is_transmitter_idle() {}
let rx_frame = unwrap!(nb::block!(can.receive()));
info!("loopback frame {=u8}", unwrap!(rx_frame.data())[0]);
i += 1;
}
}