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h7: implement RTC and LSE clock configuration

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This commit is contained in:
Matt Ickstadt
2023-10-03 16:45:05 -05:00
parent 65ed19aae2
commit f01609036f
12 changed files with 231 additions and 51 deletions
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3
examples/stm32h7/Cargo.toml
View File

@ -6,7 +6,7 @@ license = "MIT OR Apache-2.0"
[dependencies]
# Change stm32h743bi to your chip name, if necessary.
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32h743bi", "time-driver-any", "exti", "memory-x", "unstable-pac", "unstable-traits"] }
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "defmt", "stm32h743bi", "time-driver-any", "exti", "memory-x", "unstable-pac", "unstable-traits", "chrono"] }
embassy-sync = { version = "0.3.0", path = "../../embassy-sync", features = ["defmt"] }
embassy-executor = { version = "0.3.0", path = "../../embassy-executor", features = ["nightly", "arch-cortex-m", "executor-thread", "defmt", "integrated-timers"] }
embassy-time = { version = "0.1.3", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime", "unstable-traits", "tick-hz-32_768"] }
@ -32,6 +32,7 @@ micromath = "2.0.0"
stm32-fmc = "0.3.0"
embedded-storage = "0.3.0"
static_cell = { version = "1.1", features = ["nightly"]}
chrono = { version = "^0.4", default-features = false }
# cargo build/run
[profile.dev]

39
examples/stm32h7/src/bin/rtc.rs Normal file
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@ -0,0 +1,39 @@
#![no_std]
#![no_main]
#![feature(type_alias_impl_trait)]
use chrono::{NaiveDate, NaiveDateTime};
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::rcc::Lse;
use embassy_stm32::rtc::{Rtc, RtcClockSource, 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.lse = Some(Lse::Oscillator);
config.rcc.rtc_mux = Some(RtcClockSource::LSE);
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.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());
}