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// This example is configured for the nucleo-wl55jc board. Curret monitor should show just a few microamps when the device is in stop2 mode.
#![no_std]
#![no_main]
use core::mem::MaybeUninit;
use defmt::*;
#[cfg(feature = "defmt-rtt")]
use defmt_rtt as _;
use embassy_executor::Spawner;
use embassy_stm32::SharedData;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_time::Timer;
use panic_probe as _;
#[unsafe(link_section = ".shared_data")]
static SHARED_DATA: MaybeUninit<SharedData> = MaybeUninit::uninit();
#[embassy_executor::main(executor = "embassy_stm32::Executor", entry = "cortex_m_rt::entry")]
async fn async_main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.ls = embassy_stm32::rcc::LsConfig::default_lsi();
config.rcc.msi = Some(embassy_stm32::rcc::MSIRange::RANGE4M);
config.rcc.sys = embassy_stm32::rcc::Sysclk::MSI;
#[cfg(feature = "defmt-serial")]
{
// disable debug during sleep to reduce power consumption since we are
// using defmt-serial on LPUART1.
config.enable_debug_during_sleep = false;
}
let p = embassy_stm32::init_primary(config, &SHARED_DATA);
#[cfg(feature = "defmt-serial")]
{
use embassy_stm32::mode::Blocking;
use embassy_stm32::usart::Uart;
use static_cell::StaticCell;
let config = embassy_stm32::usart::Config::default();
let uart = Uart::new_blocking(p.LPUART1, p.PA3, p.PA2, config).expect("failed to configure UART!");
static SERIAL: StaticCell<Uart<'static, Blocking>> = StaticCell::new();
defmt_serial::defmt_serial(SERIAL.init(uart));
}
info!("Hello World!");
let mut led = Output::new(p.PB15, Level::High, Speed::Low);
loop {
info!("low");
led.set_low();
Timer::after_millis(5000).await;
info!("high");
led.set_high();
Timer::after_millis(5000).await;
}
}
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