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#![no_std]
#![no_main]
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.sys = Sysclk::PLL1_R;
config.rcc.hse = Some(Hse {
freq: Hertz::mhz(8),
mode: HseMode::Oscillator,
});
config.rcc.pll = Some(Pll {
source: PllSource::HSE,
prediv: PllPreDiv::DIV1,
mul: PllMul::MUL20,
divp: None,
divq: None,
divr: Some(PllRDiv::DIV2), // sysclk 80Mhz clock (8 / 1 * 20 / 2)
});
config.rcc.ls = LsConfig::default_lse();
}
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.and_utc().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.and_utc().timestamp());
}
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