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//! This example runs on the RAK4631 WisBlock, which has an nRF52840 MCU and Semtech Sx126x radio.
//! Other nrf/sx126x combinations may work with appropriate pin modifications.
//! It demonstates LORA P2P functionality in conjunction with example lora_p2p_sense.rs.
#![no_std]
#![no_main]
#![macro_use]
#![allow(dead_code)]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
use embassy_lora::sx126x::*;
use embassy_nrf::gpio::{Input, Level, Output, OutputDrive, Pin as _, Pull};
use embassy_nrf::{interrupt, spim};
use embassy_time::{Duration, Timer};
use lorawan_device::async_device::radio::{Bandwidth, CodingRate, PhyRxTx, RfConfig, SpreadingFactor};
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_nrf::init(Default::default());
let mut spi_config = spim::Config::default();
spi_config.frequency = spim::Frequency::M16;
let mut radio = {
let irq = interrupt::take!(SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1);
let spim = spim::Spim::new(p.TWISPI1, irq, p.P1_11, p.P1_13, p.P1_12, spi_config);
let cs = Output::new(p.P1_10.degrade(), Level::High, OutputDrive::Standard);
let reset = Output::new(p.P1_06.degrade(), Level::High, OutputDrive::Standard);
let dio1 = Input::new(p.P1_15.degrade(), Pull::Down);
let busy = Input::new(p.P1_14.degrade(), Pull::Down);
let antenna_rx = Output::new(p.P1_05.degrade(), Level::Low, OutputDrive::Standard);
let antenna_tx = Output::new(p.P1_07.degrade(), Level::Low, OutputDrive::Standard);
match Sx126xRadio::new(spim, cs, reset, antenna_rx, antenna_tx, dio1, busy, false).await {
Ok(r) => r,
Err(err) => {
info!("Sx126xRadio error = {}", err);
return;
}
}
};
let mut debug_indicator = Output::new(p.P1_03, Level::Low, OutputDrive::Standard);
let mut start_indicator = Output::new(p.P1_04, Level::Low, OutputDrive::Standard);
start_indicator.set_high();
Timer::after(Duration::from_secs(5)).await;
start_indicator.set_low();
loop {
let rf_config = RfConfig {
frequency: 903900000, // channel in Hz
bandwidth: Bandwidth::_250KHz,
spreading_factor: SpreadingFactor::_10,
coding_rate: CodingRate::_4_8,
};
let mut buffer = [00u8; 100];
// P2P receive
match radio.rx(rf_config, &mut buffer).await {
Ok((buffer_len, rx_quality)) => info!(
"RX received = {:?} with length = {} rssi = {} snr = {}",
&buffer[0..buffer_len],
buffer_len,
rx_quality.rssi(),
rx_quality.snr()
),
Err(err) => info!("RX error = {}", err),
}
debug_indicator.set_high();
Timer::after(Duration::from_secs(2)).await;
debug_indicator.set_low();
}
}
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