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Add spi, i2c and fix usart

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This commit is contained in:
Dion Dokter 2024-04-16 15:33:23 +02:00
parent 53cb84d3d6
commit a5f754238b
3 changed files with 52 additions and 7 deletions
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21
examples/stm32u0/src/bin/i2c.rs Normal file
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@ -0,0 +1,21 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::i2c::I2c;
use embassy_stm32::time::Hertz;
use {defmt_rtt as _, panic_probe as _};
const ADDRESS: u8 = 0x5F;
const WHOAMI: u8 = 0x0F;
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
let mut i2c = I2c::new_blocking(p.I2C2, p.PB10, p.PB11, Hertz(100_000), Default::default());
let mut data = [0u8; 1];
unwrap!(i2c.blocking_write_read(ADDRESS, &[WHOAMI], &mut data));
info!("Whoami: {}", data[0]);
}

30
examples/stm32u0/src/bin/spi.rs Normal file
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@ -0,0 +1,30 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_stm32::spi::{Config, Spi};
use embassy_stm32::time::Hertz;
use {defmt_rtt as _, panic_probe as _};
#[cortex_m_rt::entry]
fn main() -> ! {
info!("Hello World!");
let p = embassy_stm32::init(Default::default());
let mut spi_config = Config::default();
spi_config.frequency = Hertz(1_000_000);
let mut spi = Spi::new_blocking(p.SPI3, p.PC10, p.PC12, p.PC11, spi_config);
let mut cs = Output::new(p.PE0, Level::High, Speed::VeryHigh);
loop {
let mut buf = [0x0Au8; 4];
cs.set_low();
unwrap!(spi.blocking_transfer_in_place(&mut buf));
cs.set_high();
info!("xfer {=[u8]:x}", buf);
}
}

8
examples/stm32u0/src/bin/usart.rs
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@ -2,15 +2,9 @@
#![no_main]
use defmt::*;
use embassy_stm32::dma::NoDma;
use embassy_stm32::usart::{Config, Uart};
use embassy_stm32::{bind_interrupts, peripherals, usart};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
USART2_LPUART2 => usart::InterruptHandler<peripherals::USART2>;
});
#[cortex_m_rt::entry]
fn main() -> ! {
info!("Hello World!");
@ -18,7 +12,7 @@ fn main() -> ! {
let p = embassy_stm32::init(Default::default());
let config = Config::default();
let mut usart = Uart::new(p.USART2, p.PA3, p.PA2, Irqs, NoDma, NoDma, config).unwrap();
let mut usart = Uart::new_blocking(p.USART2, p.PA3, p.PA2, config).unwrap();
unwrap!(usart.blocking_write(b"Hello Embassy World!\r\n"));
info!("wrote Hello, starting echo");