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Added RTC example

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This commit is contained in:
Dion Dokter 2024-04-16 15:24:20 +02:00
parent c8c7c718f3
commit 53cb84d3d6
2 changed files with 51 additions and 1 deletions
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3
examples/stm32u0/Cargo.toml
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@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
[dependencies]
# Change stm32u083rc to your chip name, if necessary.
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = [ "defmt", "time-driver-any", "stm32u083rc", "memory-x", "unstable-pac", "exti"] }
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = [ "defmt", "time-driver-any", "stm32u083rc", "memory-x", "unstable-pac", "exti", "chrono"] }
embassy-sync = { version = "0.5.0", path = "../../embassy-sync", features = ["defmt"] }
embassy-executor = { version = "0.5.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "defmt", "integrated-timers"] }
embassy-time = { version = "0.3.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
@ -23,6 +23,7 @@ futures = { version = "0.3.17", default-features = false, features = ["async-awa
heapless = { version = "0.8", default-features = false }
micromath = "2.0.0"
chrono = { version = "0.4.38", default-features = false }
[profile.release]
debug = 2

49
examples/stm32u0/src/bin/rtc.rs Normal file
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@ -0,0 +1,49 @@
#![no_std]
#![no_main]
use chrono::{NaiveDate, NaiveDateTime};
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::rtc::{Rtc, RtcConfig};
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.hsi = true;
config.rcc.pll = Some(Pll {
source: PllSource::HSI, // 16 MHz
prediv: PllPreDiv::DIV1,
mul: PllMul::MUL7, // 16 * 7 = 112 MHz
divp: None,
divq: None,
divr: Some(PllRDiv::DIV2), // 112 / 2 = 56 MHz
});
config.rcc.ls = LsConfig::default();
}
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());
}