embassy/examples/stm32f4/src/bin/sdmmc.rs

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

use defmt::*;
use embassy_executor::executor::Spawner;
use embassy_stm32::sdmmc::Sdmmc;
use embassy_stm32::time::mhz;
use embassy_stm32::{interrupt, Config, Peripherals};
use {defmt_rtt as _, panic_probe as _};

fn config() -> Config {
    let mut config = Config::default();
    config.rcc.sys_ck = Some(mhz(48));
    config
}

#[embassy_executor::main(config = "config()")]
async fn main(_spawner: Spawner, p: Peripherals) -> ! {
    info!("Hello World!");

    let irq = interrupt::take!(SDIO);

    let mut sdmmc = Sdmmc::new_4bit(
        p.SDIO,
        irq,
        p.DMA2_CH3,
        p.PC12,
        p.PD2,
        p.PC8,
        p.PC9,
        p.PC10,
        p.PC11,
        Default::default(),
    );

    // Should print 400kHz for initialization
    info!("Configured clock: {}", sdmmc.clock().0);

    unwrap!(sdmmc.init_card(mhz(25)).await);

    let card = unwrap!(sdmmc.card());

    info!("Card: {:#?}", Debug2Format(card));

    loop {}
}