mirror of
https://github.com/esp-rs/esp-hal.git
synced 2025-10-01 06:11:03 +00:00
b7b916f03a
* Eliminate esp-hal's `ufmt` feature * Eliminate esp-hal's `embedded-hal-02` feature * Eliminate esp-hal's `embedded-hal` feature * Eliminate esp-hal's `embedded-io` feature * Eliminate esp-hal's `async` feature * Update `CHANGELOG.md` * Remove `async` from required features for HIL tests * Update migration guide
77 lines
2.2 KiB
Rust
77 lines
2.2 KiB
Rust
//! Embassy SPI
|
|
//!
|
|
//! Depending on your target and the board you are using you have to change the
|
|
//! pins.
|
|
//!
|
|
//! Connect MISO and MOSI pins to see the outgoing data is read as incoming
|
|
//! data.
|
|
//!
|
|
//! The following wiring is assumed:
|
|
//! SCLK => GPIO0
|
|
//! MISO => GPIO2
|
|
//! MOSI => GPIO4
|
|
//! CS => GPIO5
|
|
|
|
//% CHIPS: esp32 esp32c2 esp32c3 esp32c6 esp32h2 esp32s2 esp32s3
|
|
//% FEATURES: embassy embassy-generic-timers
|
|
|
|
#![no_std]
|
|
#![no_main]
|
|
|
|
use embassy_executor::Spawner;
|
|
use embassy_time::{Duration, Timer};
|
|
use esp_backtrace as _;
|
|
use esp_hal::{
|
|
dma::*,
|
|
dma_buffers,
|
|
gpio::Io,
|
|
prelude::*,
|
|
spi::{master::Spi, SpiMode},
|
|
timer::timg::TimerGroup,
|
|
};
|
|
|
|
#[esp_hal_embassy::main]
|
|
async fn main(_spawner: Spawner) {
|
|
esp_println::println!("Init!");
|
|
let (peripherals, clocks) = esp_hal::init(esp_hal::Config::default());
|
|
|
|
let timg0 = TimerGroup::new(peripherals.TIMG0, &clocks);
|
|
esp_hal_embassy::init(&clocks, timg0.timer0);
|
|
|
|
let io = Io::new(peripherals.GPIO, peripherals.IO_MUX);
|
|
let sclk = io.pins.gpio0;
|
|
let miso = io.pins.gpio2;
|
|
let mosi = io.pins.gpio4;
|
|
let cs = io.pins.gpio5;
|
|
|
|
let dma = Dma::new(peripherals.DMA);
|
|
|
|
cfg_if::cfg_if! {
|
|
if #[cfg(any(feature = "esp32", feature = "esp32s2"))] {
|
|
let dma_channel = dma.spi2channel;
|
|
} else {
|
|
let dma_channel = dma.channel0;
|
|
}
|
|
}
|
|
|
|
let (tx_buffer, tx_descriptors, rx_buffer, rx_descriptors) = dma_buffers!(32000);
|
|
let dma_tx_buf = DmaTxBuf::new(tx_descriptors, tx_buffer).unwrap();
|
|
let dma_rx_buf = DmaRxBuf::new(rx_descriptors, rx_buffer).unwrap();
|
|
|
|
let mut spi = Spi::new(peripherals.SPI2, 100.kHz(), SpiMode::Mode0, &clocks)
|
|
.with_pins(Some(sclk), Some(mosi), Some(miso), Some(cs))
|
|
.with_dma(dma_channel.configure_for_async(false, DmaPriority::Priority0))
|
|
.with_buffers(dma_tx_buf, dma_rx_buf);
|
|
|
|
let send_buffer = [0, 1, 2, 3, 4, 5, 6, 7];
|
|
loop {
|
|
let mut buffer = [0; 8];
|
|
esp_println::println!("Sending bytes");
|
|
embedded_hal_async::spi::SpiBus::transfer(&mut spi, &mut buffer, &send_buffer)
|
|
.await
|
|
.unwrap();
|
|
esp_println::println!("Bytes received: {:?}", buffer);
|
|
Timer::after(Duration::from_millis(5_000)).await;
|
|
}
|
|
}
|