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//! This example runs on a STM32WL board, which has a builtin Semtech Sx1262 radio.
//! It demonstrates LoRaWAN join functionality.
#![no_std]
#![no_main]
#![macro_use]
#![feature(type_alias_impl_trait, async_fn_in_trait)]
#![allow(incomplete_features)]
use defmt::info;
use embassy_embedded_hal::adapter::BlockingAsync;
use embassy_executor::Spawner;
use embassy_lora::iv::Stm32wlInterfaceVariant;
use embassy_lora::LoraTimer;
use embassy_stm32::dma::NoDma;
use embassy_stm32::gpio::{Level, Output, Pin, Speed};
use embassy_stm32::peripherals::SUBGHZSPI;
use embassy_stm32::rcc::low_level::RccPeripheral;
use embassy_stm32::rng::Rng;
use embassy_stm32::spi::{BitOrder, Config as SpiConfig, Spi, MODE_0};
use embassy_stm32::time::Hertz;
use embassy_stm32::{interrupt, into_ref, pac, Peripheral};
use embassy_time::Delay;
use lora_phy::mod_params::*;
use lora_phy::sx1261_2::SX1261_2;
use lora_phy::LoRa;
use lorawan::default_crypto::DefaultFactory as Crypto;
use lorawan_device::async_device::lora_radio::LoRaRadio;
use lorawan_device::async_device::{region, Device, JoinMode};
use {defmt_rtt as _, panic_probe as _};
const LORAWAN_REGION: region::Region = region::Region::EU868; // warning: set this appropriately for the region
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = embassy_stm32::Config::default();
config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSI16;
config.rcc.enable_lsi = true;
let p = embassy_stm32::init(config);
unsafe { pac::RCC.ccipr().modify(|w| w.set_rngsel(0b01)) }
let clk = Hertz(core::cmp::min(SUBGHZSPI::frequency().0 / 2, 16_000_000));
let mut spi_config = SpiConfig::default();
spi_config.mode = MODE_0;
spi_config.bit_order = BitOrder::MsbFirst;
let spi = Spi::new_subghz(p.SUBGHZSPI, NoDma, NoDma, clk, spi_config);
let spi = BlockingAsync::new(spi);
let irq = interrupt::take!(SUBGHZ_RADIO);
into_ref!(irq);
// Set CTRL1 and CTRL3 for high-power transmission, while CTRL2 acts as an RF switch between tx and rx
let _ctrl1 = Output::new(p.PC4.degrade(), Level::Low, Speed::High);
let ctrl2 = Output::new(p.PC5.degrade(), Level::High, Speed::High);
let _ctrl3 = Output::new(p.PC3.degrade(), Level::High, Speed::High);
let iv = Stm32wlInterfaceVariant::new(irq, None, Some(ctrl2)).unwrap();
let mut delay = Delay;
let lora = {
match LoRa::new(SX1261_2::new(BoardType::Stm32wlSx1262, spi, iv), true, &mut delay).await {
Ok(l) => l,
Err(err) => {
info!("Radio error = {}", err);
return;
}
}
};
let radio = LoRaRadio::new(lora);
let region: region::Configuration = region::Configuration::new(LORAWAN_REGION);
let mut device: Device<_, Crypto, _, _> = Device::new(region, radio, LoraTimer::new(), Rng::new(p.RNG));
defmt::info!("Joining LoRaWAN network");
// TODO: Adjust the EUI and Keys according to your network credentials
match device
.join(&JoinMode::OTAA {
deveui: [0, 0, 0, 0, 0, 0, 0, 0],
appeui: [0, 0, 0, 0, 0, 0, 0, 0],
appkey: [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0],
})
.await
{
Ok(()) => defmt::info!("LoRaWAN network joined"),
Err(err) => {
info!("Radio error = {}", err);
return;
}
};
}
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