47 lines
1.4 KiB
Rust
47 lines
1.4 KiB
Rust
//! This example shows how to use SPI (Serial Peripheral Interface) in the RP2040 chip.
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//! No specific hardware is specified in this example. If you connect pin 11 and 12 you should get the same data back.
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#![no_std]
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#![no_main]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_rp::block::ImageDef;
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use embassy_rp::spi::{Config, Spi};
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use embassy_time::Timer;
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use {defmt_rtt as _, panic_probe as _};
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#[link_section = ".start_block"]
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#[used]
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pub static IMAGE_DEF: ImageDef = ImageDef::secure_exe();
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// Program metadata for `picotool info`
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#[link_section = ".bi_entries"]
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#[used]
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pub static PICOTOOL_ENTRIES: [embassy_rp::binary_info::EntryAddr; 4] = [
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embassy_rp::binary_info_rp_cargo_bin_name!(),
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embassy_rp::binary_info_rp_cargo_version!(),
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embassy_rp::binary_info_rp_program_description!(c"Blinky"),
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embassy_rp::binary_info_rp_program_build_attribute!(),
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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_rp::init(Default::default());
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info!("Hello World!");
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let miso = p.PIN_12;
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let mosi = p.PIN_11;
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let clk = p.PIN_10;
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let mut spi = Spi::new(p.SPI1, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, Config::default());
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loop {
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let tx_buf = [1_u8, 2, 3, 4, 5, 6];
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let mut rx_buf = [0_u8; 6];
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spi.transfer(&mut rx_buf, &tx_buf).await.unwrap();
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info!("{:?}", rx_buf);
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Timer::after_secs(1).await;
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}
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}
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