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Enable RTC on STM32WL chips (#1645)

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* 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
This commit is contained in:
Phil Markgraf
2023-07-15 04:40:23 -07:00
committed by GitHub
parent 7b36fe049d
commit 3bae533066
5 changed files with 108 additions and 4 deletions
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2
examples/stm32wl/.cargo/config.toml
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@ -3,7 +3,7 @@
runner = "probe-rs run --chip STM32WLE5JCIx"
[build]
target = "thumbv7em-none-eabihf"
target = "thumbv7em-none-eabi"
[env]
DEFMT_LOG = "trace"

5
examples/stm32wl/Cargo.toml
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@ -8,8 +8,8 @@ license = "MIT OR Apache-2.0"
embassy-sync = { version = "0.2.0", path = "../../embassy-sync", features = ["defmt"] }
embassy-executor = { version = "0.2.0", path = "../../embassy-executor", features = ["nightly", "arch-cortex-m", "executor-thread", "defmt", "integrated-timers"] }
embassy-time = { version = "0.1.2", path = "../../embassy-time", features = ["nightly", "unstable-traits", "defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "unstable-traits", "defmt", "stm32wl55jc-cm4", "time-driver-any", "memory-x", "unstable-pac", "exti"] }
embassy-embedded-hal = {version = "0.1.0", path = "../../embassy-embedded-hal" }
embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["nightly", "unstable-traits", "defmt", "stm32wl55jc-cm4", "time-driver-any", "memory-x", "unstable-pac", "exti", "chrono"] }
embassy-embedded-hal = { version = "0.1.0", path = "../../embassy-embedded-hal" }
embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["stm32wl", "time", "defmt"] }
lora-phy = { version = "1" }
lorawan-device = { version = "0.10.0", default-features = false, features = ["async", "external-lora-phy"] }
@ -25,6 +25,7 @@ embedded-storage = "0.3.0"
panic-probe = { version = "0.3", features = ["print-defmt"] }
futures = { version = "0.3.17", default-features = false, features = ["async-await"] }
heapless = { version = "0.7.5", default-features = false }
chrono = { version = "^0.4", default-features = false }
[patch.crates-io]
lora-phy = { git = "https://github.com/embassy-rs/lora-phy", rev = "ad289428fd44b02788e2fa2116445cc8f640a265" }

43
examples/stm32wl/src/bin/rtc.rs Normal file
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@ -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());
}