55 lines
1.5 KiB
Rust
55 lines
1.5 KiB
Rust
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#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use defmt::{assert_eq, *};
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use embassy_executor::Spawner;
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use embassy_rp::interrupt;
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use embassy_rp::uart::{Config, Uart};
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use embedded_io::asynch::{Read, Write};
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_rp::init(Default::default());
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info!("Hello World!");
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let (tx, rx, uart) = (p.PIN_0, p.PIN_1, p.UART0);
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let config = Config::default();
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let mut uart = Uart::new_blocking(uart, tx, rx, config);
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// We can't send too many bytes, they have to fit in the FIFO.
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// This is because we aren't sending+receiving at the same time.
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let data = [0xC0, 0xDE];
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uart.blocking_write(&data).unwrap();
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let mut buf = [0; 2];
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uart.blocking_read(&mut buf).unwrap();
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assert_eq!(buf, data);
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let irq = interrupt::take!(UART0_IRQ);
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let tx_buf = &mut [0u8; 16];
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let rx_buf = &mut [0u8; 16];
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let mut uart = uart.into_buffered(irq, tx_buf, rx_buf);
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// Make sure we send more bytes than fits in the FIFO, to test the actual
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// bufferedUart.
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let data = [
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1u8, 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,
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30, 31,
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];
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uart.write_all(&data).await.unwrap();
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info!("Done writing");
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let mut buf = [0; 31];
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uart.read_exact(&mut buf).await.unwrap();
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assert_eq!(buf, data);
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info!("Test OK");
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cortex_m::asm::bkpt();
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}
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