embassy/examples/rp/src/bin/uart.rs

//! This example shows how to use UART (Universal asynchronous receiver-transmitter) in the RP2040 chip.
//!
//! No specific hardware is specified in this example. Only output on pin 0 is tested.
//! The Raspberry Pi Debug Probe (https://www.raspberrypi.com/products/debug-probe/) could be used
//! with its UART port.

#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]

use embassy_executor::Spawner;
use embassy_rp::uart;
use {defmt_rtt as _, panic_probe as _};

#[embassy_executor::main]
async fn main(_spawner: Spawner) {
    let p = embassy_rp::init(Default::default());
    let config = uart::Config::default();
    let mut uart = uart::Uart::new_with_rtscts_blocking(p.UART0, p.PIN_0, p.PIN_1, p.PIN_3, p.PIN_2, config);
    uart.blocking_write("Hello World!\r\n".as_bytes()).unwrap();

    loop {
        uart.blocking_write("hello there!\r\n".as_bytes()).unwrap();
        cortex_m::asm::delay(1_000_000);
    }
}