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#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::sdmmc::Sdmmc;
use embassy_stm32::time::mhz;
use embassy_stm32::{Config, bind_interrupts, peripherals, sdmmc};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
SDMMC1 => sdmmc::InterruptHandler<peripherals::SDMMC1>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) -> ! {
let mut config = Config::default();
{
use embassy_stm32::rcc::*;
config.rcc.hsi = Some(HSIPrescaler::DIV1);
config.rcc.csi = true;
config.rcc.pll1 = Some(Pll {
source: PllSource::HSI,
prediv: PllPreDiv::DIV4,
mul: PllMul::MUL50,
divp: Some(PllDiv::DIV2),
divq: Some(PllDiv::DIV4), // default clock chosen by SDMMCSEL. 200 Mhz
divr: None,
});
config.rcc.sys = Sysclk::PLL1_P; // 400 Mhz
config.rcc.ahb_pre = AHBPrescaler::DIV2; // 200 Mhz
config.rcc.apb1_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb2_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb3_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.apb4_pre = APBPrescaler::DIV2; // 100 Mhz
config.rcc.voltage_scale = VoltageScale::Scale1;
}
let p = embassy_stm32::init(config);
info!("Hello World!");
let mut sdmmc = Sdmmc::new_4bit(
p.SDMMC1,
Irqs,
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_sd_card(mhz(25)).await);
let card = unwrap!(sdmmc.card());
info!("Card: {:#?}", Debug2Format(card));
loop {}
}
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