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#![no_std]
#![no_main]
extern crate embassy_imxrt_examples;
use defmt::info;
use embassy_executor::Spawner;
use embassy_imxrt::flexcomm::uart::{self, Async, Uart};
use embassy_imxrt::{bind_interrupts, peripherals};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
FLEXCOMM2 => uart::InterruptHandler<peripherals::FLEXCOMM2>;
FLEXCOMM4 => uart::InterruptHandler<peripherals::FLEXCOMM4>;
});
const BUFLEN: usize = 16;
#[embassy_executor::task]
async fn usart4_task(mut uart: Uart<'static, Async>) {
info!("RX Task");
loop {
let mut rx_buf = [0; BUFLEN];
uart.read(&mut rx_buf).await.unwrap();
info!("usart4: rx_buf {:02x}", rx_buf);
Timer::after_millis(10).await;
let tx_buf = [0xaa; BUFLEN];
uart.write(&tx_buf).await.unwrap();
info!("usart4: tx_buf {:02x}", tx_buf);
}
}
#[embassy_executor::task]
async fn usart2_task(mut uart: Uart<'static, Async>) {
info!("TX Task");
loop {
let tx_buf = [0x55; BUFLEN];
uart.write(&tx_buf).await.unwrap();
info!("usart2: tx_buf {:02x}", tx_buf);
Timer::after_millis(10).await;
let mut rx_buf = [0x00; BUFLEN];
uart.read(&mut rx_buf).await.unwrap();
info!("usart2: rx_buf {:02x}", rx_buf);
}
}
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_imxrt::init(Default::default());
info!("UART test start");
let usart4 = Uart::new_with_rtscts(
p.FLEXCOMM4,
p.PIO0_29,
p.PIO0_30,
p.PIO1_0,
p.PIO0_31,
Irqs,
p.DMA0_CH9,
p.DMA0_CH8,
Default::default(),
)
.unwrap();
spawner.spawn(usart4_task(usart4).unwrap());
let usart2 = Uart::new_with_rtscts(
p.FLEXCOMM2,
p.PIO0_15,
p.PIO0_16,
p.PIO0_18,
p.PIO0_17,
Irqs,
p.DMA0_CH5,
p.DMA0_CH4,
Default::default(),
)
.unwrap();
spawner.spawn(usart2_task(usart2).unwrap());
}
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