57 lines
1.4 KiB
Rust
Executable file
57 lines
1.4 KiB
Rust
Executable file
#![no_main]
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#![no_std]
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use defmt::info;
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use hal::pwr::PWR;
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use hal::rtc::{Datelike, NaiveDateTime, Rtc, Timelike};
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use panic_probe as _;
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use defmt_rtt as _; // global logger
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use cortex_m_rt::entry;
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use hal::{pac, prelude::*, rcc::Config};
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#[entry]
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fn main() -> ! {
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let dp = pac::Peripherals::take().unwrap();
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let cp = cortex_m::Peripherals::take().unwrap();
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// Configure the clock.
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let mut rcc = dp.RCC.freeze(Config::hsi16());
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let pwr = PWR::new(dp.PWR, &mut rcc);
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let gpioa = dp.GPIOA.split(&mut rcc);
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let mut led = gpioa.pa5.into_push_pull_output();
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let mut delay = cp.SYST.delay(rcc.clocks);
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// Setup the Real-Time-Clock of the Controller.
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// starts at 0 (2001-01-01 00:00:00) and resets
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// when the Controller is no longer powered.
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let mut rtc = Rtc::new(dp.RTC, &mut rcc, &pwr, None).unwrap();
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loop {
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led.set_high().unwrap(); // light on
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delay.delay_ms(500_u16); // wait
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led.set_low().unwrap(); // light off
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delay.delay_ms(500_u16); // wait
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// print the current time from the RTC
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ptime(&mut rtc);
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}
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}
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/// prints the time to the "host" computer via RTT
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fn ptime(rtc: &mut Rtc) {
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let time: NaiveDateTime = rtc.now();
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info!(
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"Time: {:04}-{:02}-{:02} {:02}:{:02}:{:02}",
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time.year(),
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time.month(),
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time.day(),
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time.hour(),
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time.minute(),
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time.second()
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)
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}
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