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Add external LoRa physical layer functionality.

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This commit is contained in:
ceekdee
2023-04-21 01:20:46 -05:00
parent fb27594b2e
commit 02c86bca52
15 changed files with 884 additions and 103 deletions
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10
examples/nrf52840/Cargo.toml
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@ -13,15 +13,15 @@ nightly = ["embassy-executor/nightly", "embassy-nrf/nightly", "embassy-net/night
embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
embassy-sync = { version = "0.2.0", path = "../../embassy-sync", features = ["defmt"] }
embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = ["arch-cortex-m", "executor-thread", "executor-interrupt", "defmt", "integrated-timers"] }
embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["defmt", "defmt-timestamp-uptime"] }
embassy-time = { version = "0.1.0", path = "../../embassy-time", features = ["nightly", "unstable-traits", "defmt", "defmt-timestamp-uptime"] }
embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["defmt", "nrf52840", "time-driver-rtc1", "gpiote", "unstable-pac", "time"] }
embassy-net = { version = "0.1.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet"], optional = true }
embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt", "msos-descriptor",], optional = true }
embedded-io = "0.4.0"
embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["sx126x", "time", "defmt"], optional = true }
lorawan-device = { version = "0.9.0", default-features = false, features = ["async"], optional = true }
lorawan = { version = "0.7.2", default-features = false, features = ["default-crypto"], optional = true }
embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["sx126x", "time", "defmt", "external-lora-phy"], optional = true }
lora-phy = { version = "1", path = "../../../lora-phy" }
lorawan-device = { version = "0.9.0", path = "../../../rust-lorawan/device", default-features = false, features = ["async", "external-lora-phy"], optional = true }
lorawan = { version = "0.7.2", path = "../../../rust-lorawan/encoding", default-features = false, features = ["default-crypto"], optional = true }
defmt = "0.3"
defmt-rtt = "0.4"

92
examples/nrf52840/src/bin/lora_cad.rs Normal file
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@ -0,0 +1,92 @@
//! 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 CAD functionality.
#![no_std]
#![no_main]
#![macro_use]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
use embassy_lora::iv::GenericSx126xInterfaceVariant;
use embassy_nrf::gpio::{Input, Level, Output, OutputDrive, Pin as _, Pull};
use embassy_nrf::{bind_interrupts, peripherals, spim};
use embassy_time::{Delay, Duration, Timer};
use lora_phy::mod_params::*;
use lora_phy::sx1261_2::SX1261_2;
use lora_phy::LoRa;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1 => spim::InterruptHandler<peripherals::TWISPI1>;
});
#[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 spim = spim::Spim::new(p.TWISPI1, Irqs, p.P1_11, p.P1_13, p.P1_12, spi_config);
let nss = 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 rf_switch_rx = Output::new(p.P1_05.degrade(), Level::Low, OutputDrive::Standard);
let rf_switch_tx = Output::new(p.P1_07.degrade(), Level::Low, OutputDrive::Standard);
let iv =
GenericSx126xInterfaceVariant::new(nss, reset, dio1, busy, Some(rf_switch_rx), Some(rf_switch_tx)).unwrap();
let mut delay = Delay;
let mut lora = {
match LoRa::new(SX1261_2::new(BoardType::Rak4631Sx1262, spim, iv), false, &mut delay).await {
Ok(l) => l,
Err(err) => {
info!("Radio 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();
let mdltn_params = {
match lora.create_modulation_params(SpreadingFactor::_10, Bandwidth::_250KHz, CodingRate::_4_8, 903900000) {
Ok(mp) => mp,
Err(err) => {
info!("Radio error = {}", err);
return;
}
}
};
match lora.prepare_for_cad(&mdltn_params, true).await {
Ok(()) => {}
Err(err) => {
info!("Radio error = {}", err);
return;
}
};
match lora.cad().await {
Ok(cad_activity_detected) => {
if cad_activity_detected {
info!("cad successful with activity detected")
} else {
info!("cad successful without activity detected")
}
debug_indicator.set_high();
Timer::after(Duration::from_secs(15)).await;
debug_indicator.set_low();
}
Err(err) => info!("cad unsuccessful = {}", err),
}
}

124
examples/nrf52840/src/bin/lora_p2p_receive_duty_cycle.rs Normal file
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@ -0,0 +1,124 @@
//! 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 Rx duty cycle functionality.
#![no_std]
#![no_main]
#![macro_use]
#![feature(type_alias_impl_trait)]
use defmt::*;
use embassy_executor::Spawner;
use embassy_lora::iv::GenericSx126xInterfaceVariant;
use embassy_nrf::gpio::{Input, Level, Output, OutputDrive, Pin as _, Pull};
use embassy_nrf::{bind_interrupts, peripherals, spim};
use embassy_time::{Delay, Duration, Timer};
use lora_phy::mod_params::*;
use lora_phy::sx1261_2::SX1261_2;
use lora_phy::LoRa;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1 => spim::InterruptHandler<peripherals::TWISPI1>;
});
#[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 spim = spim::Spim::new(p.TWISPI1, Irqs, p.P1_11, p.P1_13, p.P1_12, spi_config);
let nss = 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 rf_switch_rx = Output::new(p.P1_05.degrade(), Level::Low, OutputDrive::Standard);
let rf_switch_tx = Output::new(p.P1_07.degrade(), Level::Low, OutputDrive::Standard);
let iv =
GenericSx126xInterfaceVariant::new(nss, reset, dio1, busy, Some(rf_switch_rx), Some(rf_switch_tx)).unwrap();
let mut delay = Delay;
let mut lora = {
match LoRa::new(SX1261_2::new(BoardType::Rak4631Sx1262, spim, iv), false, &mut delay).await {
Ok(l) => l,
Err(err) => {
info!("Radio 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();
let mut receiving_buffer = [00u8; 100];
let mdltn_params = {
match lora.create_modulation_params(SpreadingFactor::_10, Bandwidth::_250KHz, CodingRate::_4_8, 903900000) {
Ok(mp) => mp,
Err(err) => {
info!("Radio error = {}", err);
return;
}
}
};
let rx_pkt_params = {
match lora.create_rx_packet_params(4, false, receiving_buffer.len() as u8, true, false, &mdltn_params) {
Ok(pp) => pp,
Err(err) => {
info!("Radio error = {}", err);
return;
}
}
};
// See "RM0453 Reference manual STM32WL5x advanced Arm®-based 32-bit MCUs with sub-GHz radio solution" for the best explanation of Rx duty cycle processing.
match lora
.prepare_for_rx(
&mdltn_params,
&rx_pkt_params,
Some(&DutyCycleParams {
rx_time: 300_000, // 300_000 units * 15.625 us/unit = 4.69 s
sleep_time: 200_000, // 200_000 units * 15.625 us/unit = 3.13 s
}),
false,
false,
0,
0,
)
.await
{
Ok(()) => {}
Err(err) => {
info!("Radio error = {}", err);
return;
}
};
receiving_buffer = [00u8; 100];
match lora.rx(&rx_pkt_params, &mut receiving_buffer).await {
Ok((received_len, _rx_pkt_status)) => {
if (received_len == 3)
&& (receiving_buffer[0] == 0x01u8)
&& (receiving_buffer[1] == 0x02u8)
&& (receiving_buffer[2] == 0x03u8)
{
info!("rx successful");
debug_indicator.set_high();
Timer::after(Duration::from_secs(5)).await;
debug_indicator.set_low();
} else {
info!("rx unknown packet")
}
}
Err(err) => info!("rx unsuccessful = {}", err),
}
}

81
examples/nrf52840/src/bin/lora_p2p_report.rs
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@ -1,81 +0,0 @@
//! 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::{bind_interrupts, peripherals, spim};
use embassy_time::{Duration, Timer};
use lorawan_device::async_device::radio::{Bandwidth, CodingRate, PhyRxTx, RfConfig, SpreadingFactor};
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
SPIM1_SPIS1_TWIM1_TWIS1_SPI1_TWI1 => spim::InterruptHandler<peripherals::TWISPI1>;
});
#[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 spim = spim::Spim::new(p.TWISPI1, Irqs, 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();
}
}