diff --git a/examples/stm32f1/src/bin/can.rs b/examples/stm32f1/src/bin/can.rs new file mode 100644 index 00000000..abe60b35 --- /dev/null +++ b/examples/stm32f1/src/bin/can.rs @@ -0,0 +1,79 @@ +#![no_std] +#![no_main] +#![feature(type_alias_impl_trait)] + +use defmt::*; +use embassy_executor::Spawner; +use embassy_stm32::bind_interrupts; +use embassy_stm32::can::bxcan::filter::Mask32; +use embassy_stm32::can::bxcan::{Fifo, Frame, StandardId, Id}; +use embassy_stm32::can::{Can, Rx0InterruptHandler, Rx1InterruptHandler, SceInterruptHandler, TxInterruptHandler}; +use embassy_stm32::Config; + +use embassy_stm32::peripherals::CAN; +use {defmt_rtt as _, panic_probe as _}; + +bind_interrupts!(struct Irqs { + USB_LP_CAN1_RX0 => Rx0InterruptHandler; + CAN1_RX1 => Rx1InterruptHandler; + CAN1_SCE => SceInterruptHandler; + USB_HP_CAN1_TX => TxInterruptHandler; +}); + +// This example is configured to work with real CAN transceivers on B8/B9. +// See other examples for loopback. + + +#[embassy_executor::main] +async fn main(_spawner: Spawner) { + + let p = embassy_stm32::init(Config::default()); + + // Set alternate pin mapping to B8/B9 + embassy_stm32::pac::AFIO.mapr().modify(|w| w.set_can1_remap(2)); + + let mut can = Can::new(p.CAN, p.PB8, p.PB9, Irqs); + + + can.as_mut() + .modify_filters() + .enable_bank(0, Fifo::Fifo0, Mask32::accept_all()); + + can.as_mut() + .modify_config() + .set_loopback(false) + .set_silent(false) + .leave_disabled(); + + + can.set_bitrate(250_000); + + can.enable().await; + + + let mut i: u8 = 0; + loop { + let tx_frame = Frame::new_data(unwrap!(StandardId::new(i as _)), [i]); + can.write(&tx_frame).await; + + match can.read().await { + Ok(env) => { + + match env.frame.id() { + Id::Extended(id) => { + defmt::println!("Extended Frame id={:x}", id.as_raw()); + }, + Id::Standard(id) => { + defmt::println!("Standard Frame id={:x}", id.as_raw()); + }, + } + + }, + Err(err) => { + defmt::println!("Error {}", err); + + } + } + i += 1; + } +}