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