From 3bae53306683a57020ba751afaf631ec169deeed Mon Sep 17 00:00:00 2001 From: Phil Markgraf Date: Sat, 15 Jul 2023 04:40:23 -0700 Subject: Enable RTC on STM32WL chips (#1645) * Add clippy allow to not report if same then branch * Support enabling RTC clock on STM32WL * Add clippy allow to not report if same then branch * Support enabling RTC clock on STM32WL * Add rtc example for stm32wl * Address code review feedback --- examples/stm32wl/src/bin/rtc.rs | 43 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 43 insertions(+) create mode 100644 examples/stm32wl/src/bin/rtc.rs (limited to 'examples/stm32wl/src') diff --git a/examples/stm32wl/src/bin/rtc.rs b/examples/stm32wl/src/bin/rtc.rs new file mode 100644 index 000000000..e11825499 --- /dev/null +++ b/examples/stm32wl/src/bin/rtc.rs @@ -0,0 +1,43 @@ +#![no_std] +#![no_main] +#![feature(type_alias_impl_trait)] + +use chrono::{NaiveDate, NaiveDateTime}; +use defmt::*; +use embassy_executor::Spawner; +use embassy_stm32::rcc::{self, ClockSrc}; +use embassy_stm32::rtc::{Rtc, RtcConfig}; +use embassy_stm32::Config; +use embassy_time::{Duration, Timer}; +use {defmt_rtt as _, panic_probe as _}; + +#[embassy_executor::main] +async fn main(_spawner: Spawner) { + let p = { + let mut config = Config::default(); + config.rcc.mux = ClockSrc::HSE32; + config.rcc.rtc_mux = rcc::RtcClockSource::LSE32; + config.rcc.enable_rtc_apb = true; + 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().clock_config(embassy_stm32::rtc::RtcClockSource::LSE), + ); + info!("Got RTC! {:?}", now.timestamp()); + + rtc.set_datetime(now.into()).expect("datetime not set"); + + // In reality the delay would be much longer + Timer::after(Duration::from_millis(20000)).await; + + let then: NaiveDateTime = rtc.now().unwrap().into(); + info!("Got RTC! {:?}", then.timestamp()); +} -- cgit