#![no_std] #![no_main] #![feature(type_alias_impl_trait)] use chrono::{NaiveDate, NaiveDateTime}; use defmt::*; use embassy_executor::Spawner; use embassy_stm32::rtc::{Rtc, RtcConfig}; use embassy_stm32::time::Hertz; use embassy_stm32::Config; use embassy_time::Timer; use {defmt_rtt as _, panic_probe as _}; #[embassy_executor::main] async fn main(_spawner: Spawner) { let mut config = Config::default(); { use embassy_stm32::rcc::*; config.rcc.ls = LsConfig::default_lse(); config.rcc.hse = Some(Hse { freq: Hertz(32_000_000), mode: HseMode::Bypass, prescaler: HsePrescaler::DIV1, }); config.rcc.mux = ClockSrc::PLL1_R; config.rcc.pll = Some(Pll { source: PLLSource::HSE, prediv: PllPreDiv::DIV2, mul: PllMul::MUL6, divp: None, divq: Some(PllQDiv::DIV2), // PLL1_Q clock (32 / 2 * 6 / 2), used for RNG divr: Some(PllRDiv::DIV2), // sysclk 48Mhz clock (32 / 2 * 6 / 2) }); } let p = embassy_stm32::init(config); info!("Hello World!"); let now = NaiveDate::from_ymd_opt(2020, 5, 15) .unwrap() .and_hms_opt(10, 30, 15) .unwrap(); let mut rtc = Rtc::new(p.RTC, RtcConfig::default()); info!("Got RTC! {:?}", now.timestamp()); rtc.set_datetime(now.into()).expect("datetime not set"); // In reality the delay would be much longer Timer::after_millis(20000).await; let then: NaiveDateTime = rtc.now().unwrap().into(); info!("Got RTC! {:?}", then.timestamp()); }