54 lines
1.5 KiB
Rust
54 lines
1.5 KiB
Rust
#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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use chrono::{NaiveDate, NaiveDateTime};
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_stm32::rtc::{Rtc, RtcConfig};
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use embassy_stm32::time::Hertz;
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use embassy_stm32::Config;
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use embassy_time::Timer;
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use {defmt_rtt as _, panic_probe as _};
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let mut config = Config::default();
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{
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use embassy_stm32::rcc::*;
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config.rcc.mux = ClockSrc::PLL1_R;
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config.rcc.hse = Some(Hse {
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freq: Hertz::mhz(8),
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mode: HseMode::Oscillator,
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});
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config.rcc.pll = Some(Pll {
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source: PllSource::HSE,
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prediv: PllPreDiv::DIV1,
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mul: PllMul::MUL20,
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divp: None,
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divq: None,
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divr: Some(PllRDiv::DIV2), // sysclk 80Mhz clock (8 / 1 * 20 / 2)
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});
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config.rcc.ls = LsConfig::default_lse();
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}
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let p = embassy_stm32::init(config);
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info!("Hello World!");
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let now = NaiveDate::from_ymd_opt(2020, 5, 15)
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.unwrap()
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.and_hms_opt(10, 30, 15)
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.unwrap();
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let mut rtc = Rtc::new(p.RTC, RtcConfig::default());
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info!("Got RTC! {:?}", now.timestamp());
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rtc.set_datetime(now.into()).expect("datetime not set");
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// In reality the delay would be much longer
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Timer::after_millis(20000).await;
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let then: NaiveDateTime = rtc.now().unwrap().into();
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info!("Got RTC! {:?}", then.timestamp());
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}
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