Add external LoRa physical layer functionality.

2 files changed, 191 insertions, 0 deletions

diff --git a/examples/stm32wl/src/bin/lora_lorawan.rs b/examples/stm32wl/src/bin/lora_lorawan.rs
new file mode 100644
index 000000000..f7cf03595
--- /dev/null
+++ b/examples/stm32wl/src/bin/lora_lorawan.rs
@@ -0,0 +1,88 @@
+//! This example runs on a STM32WL board, which has a builtin Semtech Sx1262 radio.
+//! It demonstrates LoRaWAN 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 _};
+
+#[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(region::Region::EU868);
+    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;
+        }
+    };
+}
diff --git a/examples/stm32wl/src/bin/lora_p2p_send.rs b/examples/stm32wl/src/bin/lora_p2p_send.rs
new file mode 100644
index 000000000..11c35a8fe
--- /dev/null
+++ b/examples/stm32wl/src/bin/lora_p2p_send.rs
@@ -0,0 +1,103 @@
+//! This example runs on a STM32WL board, which has a builtin Semtech Sx1262 radio.
+//! It demonstrates LORA P2P send 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_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::spi::{BitOrder, Config as SpiConfig, Spi, MODE_0};
+use embassy_stm32::time::Hertz;
+use embassy_stm32::{interrupt, into_ref, Peripheral};
+use embassy_time::Delay;
+use lora_phy::mod_params::*;
+use lora_phy::sx1261_2::SX1261_2;
+use lora_phy::LoRa;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let mut config = embassy_stm32::Config::default();
+    config.rcc.mux = embassy_stm32::rcc::ClockSrc::HSE32;
+    let p = embassy_stm32::init(config);
+
+    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 mut lora = {
+        match LoRa::new(SX1261_2::new(BoardType::Stm32wlSx1262, spi, iv), false, &mut delay).await {
+            Ok(l) => l,
+            Err(err) => {
+                info!("Radio error = {}", err);
+                return;
+            }
+        }
+    };
+
+    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 mut tx_pkt_params = {
+        match lora.create_tx_packet_params(4, false, true, false, &mdltn_params) {
+            Ok(pp) => pp,
+            Err(err) => {
+                info!("Radio error = {}", err);
+                return;
+            }
+        }
+    };
+
+    match lora.prepare_for_tx(&mdltn_params, 20, false).await {
+        Ok(()) => {}
+        Err(err) => {
+            info!("Radio error = {}", err);
+            return;
+        }
+    };
+
+    let buffer = [0x01u8, 0x02u8, 0x03u8];
+    match lora.tx(&mdltn_params, &mut tx_pkt_params, &buffer, 0xffffff).await {
+        Ok(()) => {
+            info!("TX DONE");
+        }
+        Err(err) => {
+            info!("Radio error = {}", err);
+            return;
+        }
+    };
+
+    match lora.sleep(&mut delay).await {
+        Ok(()) => info!("Sleep successful"),
+        Err(err) => info!("Sleep unsuccessful = {}", err),
+    }
+}