1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
|
#![no_std]
#![no_main]
use core::str::from_utf8_mut;
use defmt::*;
use embassy_executor::Spawner;
use embassy_nxp::bind_interrupts;
use embassy_nxp::gpio::{Level, Output};
use embassy_nxp::peripherals::USART2;
use embassy_nxp::usart::{Config, InterruptHandler, Usart};
use embassy_time::Timer;
use {defmt_rtt as _, panic_halt as _};
bind_interrupts!(struct Irqs {
FLEXCOMM2 => InterruptHandler<USART2>;
}
);
#[embassy_executor::task]
async fn blinky_task(mut led: Output<'static>) {
loop {
info!("[TASK] led off!");
led.set_high();
Timer::after_millis(500).await;
info!("[TASK] led on!");
led.set_low();
Timer::after_millis(500).await;
}
}
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_nxp::init(Default::default());
let mut usart = Usart::new(
p.USART2,
p.PIO0_27,
p.PIO1_24,
Irqs,
p.DMA_CH11,
p.DMA_CH10,
Config::default(),
);
let led = Output::new(p.PIO1_6, Level::Low);
spawner.spawn(blinky_task(led).unwrap());
info!("[MAIN] Entering main loop");
loop {
let tx_buf = b"Hello, Ferris!";
let mut rx_buf = [0u8; 14];
info!("[MAIN] Write a message");
usart.write(tx_buf).await.unwrap();
Timer::after_millis(500).await;
info!("[MAIN] Read a message");
match usart.read(&mut rx_buf).await {
Ok(_) => match from_utf8_mut(&mut rx_buf) {
Ok(str) => {
info!("[MAIN] The message is: {}", str);
}
Err(_) => {
error!("[MAIN] Error in converting to UTF8");
}
},
Err(e) => warn!("[MAIN] Error: {}", e),
}
Timer::after_millis(500).await;
}
}
|
