56 lines
1.2 KiB
Rust
56 lines
1.2 KiB
Rust
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#![no_std]
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#![no_main]
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#![feature(type_alias_impl_trait)]
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#[path = "../example_common.rs"]
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mod example_common;
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use example_common::*;
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use core::mem::MaybeUninit;
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use cortex_m_rt::entry;
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use embassy_nrf::rtc;
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use nrf52840_hal::clocks;
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static mut RTC: MaybeUninit<rtc::RTC<embassy_nrf::pac::RTC1>> = MaybeUninit::uninit();
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#[entry]
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fn main() -> ! {
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info!("Hello World!");
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let p = embassy_nrf::pac::Peripherals::take().dewrap();
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clocks::Clocks::new(p.CLOCK)
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.enable_ext_hfosc()
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.set_lfclk_src_external(clocks::LfOscConfiguration::NoExternalNoBypass)
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.start_lfclk();
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let rtc: &'static _ = unsafe {
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let ptr = RTC.as_mut_ptr();
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ptr.write(rtc::RTC::new(p.RTC1));
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&*ptr
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};
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rtc.start();
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rtc.set_alarm(53719);
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info!("initialized!");
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let mut val = 0;
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let mut printval = 0;
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loop {
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let val2 = rtc.now();
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if val2 < val {
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info!(
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"timer ran backwards! {:u32} -> {:u32}",
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val as u32, val2 as u32
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);
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}
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val = val2;
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if val > printval + 32768 {
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info!("tick {:u32}", val as u32);
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printval = val;
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}
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}
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}
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