109 lines
3.3 KiB
Rust
109 lines
3.3 KiB
Rust
//! This example runs on the Raspberry Pi Pico with a Waveshare board containing a Semtech Sx1262 radio.
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//! It demonstrates LORA P2P receive functionality in conjunction with the lora_p2p_send example.
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#![no_std]
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#![no_main]
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#![macro_use]
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#![feature(type_alias_impl_trait)]
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use defmt::*;
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use embassy_executor::Spawner;
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use embassy_lora::iv::GenericSx126xInterfaceVariant;
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use embassy_rp::gpio::{Input, Level, Output, Pin, Pull};
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use embassy_rp::spi::{Config, Spi};
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use embassy_time::{Delay, Timer};
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use lora_phy::mod_params::*;
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use lora_phy::sx1261_2::SX1261_2;
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use lora_phy::LoRa;
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use {defmt_rtt as _, panic_probe as _};
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const LORA_FREQUENCY_IN_HZ: u32 = 903_900_000; // warning: set this appropriately for the region
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#[embassy_executor::main]
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async fn main(_spawner: Spawner) {
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let p = embassy_rp::init(Default::default());
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let miso = p.PIN_12;
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let mosi = p.PIN_11;
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let clk = p.PIN_10;
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let spi = Spi::new(p.SPI1, clk, mosi, miso, p.DMA_CH0, p.DMA_CH1, Config::default());
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let nss = Output::new(p.PIN_3.degrade(), Level::High);
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let reset = Output::new(p.PIN_15.degrade(), Level::High);
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let dio1 = Input::new(p.PIN_20.degrade(), Pull::None);
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let busy = Input::new(p.PIN_2.degrade(), Pull::None);
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let iv = GenericSx126xInterfaceVariant::new(nss, reset, dio1, busy, None, None).unwrap();
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let mut lora = {
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match LoRa::new(SX1261_2::new(BoardType::RpPicoWaveshareSx1262, spi, iv), false, Delay).await {
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Ok(l) => l,
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Err(err) => {
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info!("Radio error = {}", err);
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return;
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}
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}
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};
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let mut debug_indicator = Output::new(p.PIN_25, Level::Low);
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let mut receiving_buffer = [00u8; 100];
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let mdltn_params = {
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match lora.create_modulation_params(
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SpreadingFactor::_10,
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Bandwidth::_250KHz,
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CodingRate::_4_8,
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LORA_FREQUENCY_IN_HZ,
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) {
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Ok(mp) => mp,
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Err(err) => {
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info!("Radio error = {}", err);
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return;
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}
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}
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};
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let rx_pkt_params = {
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match lora.create_rx_packet_params(4, false, receiving_buffer.len() as u8, true, false, &mdltn_params) {
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Ok(pp) => pp,
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Err(err) => {
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info!("Radio error = {}", err);
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return;
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}
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}
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};
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match lora
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.prepare_for_rx(&mdltn_params, &rx_pkt_params, None, None, false)
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.await
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{
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Ok(()) => {}
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Err(err) => {
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info!("Radio error = {}", err);
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return;
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}
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};
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loop {
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receiving_buffer = [00u8; 100];
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match lora.rx(&rx_pkt_params, &mut receiving_buffer).await {
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Ok((received_len, _rx_pkt_status)) => {
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if (received_len == 3)
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&& (receiving_buffer[0] == 0x01u8)
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&& (receiving_buffer[1] == 0x02u8)
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&& (receiving_buffer[2] == 0x03u8)
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{
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info!("rx successful");
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debug_indicator.set_high();
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Timer::after_secs(5).await;
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debug_indicator.set_low();
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} else {
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info!("rx unknown packet");
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}
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}
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Err(err) => info!("rx unsuccessful = {}", err),
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}
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}
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}
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