Add lora-phy examples.

4 files changed, 139 insertions, 107 deletions

diff --git a/examples/stm32wl/src/bin/lora_lorawan.rs b/examples/stm32wl/src/bin/lora_lorawan.rs
index f7cf03595..4bcc5420e 100644
--- a/examples/stm32wl/src/bin/lora_lorawan.rs
+++ b/examples/stm32wl/src/bin/lora_lorawan.rs
@@ -1,5 +1,5 @@
 //! This example runs on a STM32WL board, which has a builtin Semtech Sx1262 radio.
-//! It demonstrates LoRaWAN functionality.
+//! It demonstrates LoRaWAN join functionality.
 #![no_std]
 #![no_main]
 #![macro_use]
@@ -28,6 +28,8 @@ 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();
@@ -65,7 +67,7 @@ async fn main(_spawner: Spawner) {
         }
     };
     let radio = LoRaRadio::new(lora);
-    let region: region::Configuration = region::Configuration::new(region::Region::EU868);
+    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");
diff --git a/examples/stm32wl/src/bin/lora_p2p_receive.rs b/examples/stm32wl/src/bin/lora_p2p_receive.rs
new file mode 100644
index 000000000..bb31518c4
--- /dev/null
+++ b/examples/stm32wl/src/bin/lora_p2p_receive.rs
@@ -0,0 +1,127 @@
+//! This example runs on the STM32WL board, which has a builtin Semtech Sx1262 radio.
+//! It demonstrates LORA P2P receive functionality in conjunction with the lora_p2p_send example.
+#![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, 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 _};
+
+const LORA_FREQUENCY_IN_HZ: u32 = 903_900_000; // 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::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 mut debug_indicator = Output::new(p.PB9, Level::Low, Speed::Low);
+    let mut start_indicator = Output::new(p.PB15, Level::Low, Speed::Low);
+
+    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,
+            LORA_FREQUENCY_IN_HZ,
+        ) {
+            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;
+            }
+        }
+    };
+
+    match lora
+        .prepare_for_rx(&mdltn_params, &rx_pkt_params, None, true, false, 0, 0x00ffffffu32)
+        .await
+    {
+        Ok(()) => {}
+        Err(err) => {
+            info!("Radio error = {}", err);
+            return;
+        }
+    };
+
+    loop {
+        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),
+        }
+    }
+}
diff --git a/examples/stm32wl/src/bin/lora_p2p_send.rs b/examples/stm32wl/src/bin/lora_p2p_send.rs
index 11c35a8fe..8a38402fa 100644
--- a/examples/stm32wl/src/bin/lora_p2p_send.rs
+++ b/examples/stm32wl/src/bin/lora_p2p_send.rs
@@ -23,6 +23,8 @@ use lora_phy::sx1261_2::SX1261_2;
 use lora_phy::LoRa;
 use {defmt_rtt as _, panic_probe as _};
 
+const LORA_FREQUENCY_IN_HZ: u32 = 903_900_000; // warning: set this appropriately for the region
+
 #[embassy_executor::main]
 async fn main(_spawner: Spawner) {
     let mut config = embassy_stm32::Config::default();
@@ -58,7 +60,12 @@ async fn main(_spawner: Spawner) {
     };
 
     let mdltn_params = {
-        match lora.create_modulation_params(SpreadingFactor::_10, Bandwidth::_250KHz, CodingRate::_4_8, 903900000) {
+        match lora.create_modulation_params(
+            SpreadingFactor::_10,
+            Bandwidth::_250KHz,
+            CodingRate::_4_8,
+            LORA_FREQUENCY_IN_HZ,
+        ) {
             Ok(mp) => mp,
             Err(err) => {
                 info!("Radio error = {}", err);
diff --git a/examples/stm32wl/src/bin/lorawan.rs b/examples/stm32wl/src/bin/lorawan.rs
deleted file mode 100644
index 32f29cc5d..000000000
--- a/examples/stm32wl/src/bin/lorawan.rs
+++ /dev/null
@@ -1,104 +0,0 @@
-#![no_std]
-#![no_main]
-#![macro_use]
-#![allow(dead_code)]
-#![feature(type_alias_impl_trait)]
-
-use embassy_executor::Spawner;
-use embassy_lora::stm32wl::*;
-use embassy_lora::LoraTimer;
-use embassy_stm32::dma::NoDma;
-use embassy_stm32::gpio::{AnyPin, Level, Output, Pin, Speed};
-use embassy_stm32::rng::Rng;
-use embassy_stm32::subghz::*;
-use embassy_stm32::{interrupt, pac};
-use lorawan::default_crypto::DefaultFactory as Crypto;
-use lorawan_device::async_device::{region, Device, JoinMode};
-use {defmt_rtt as _, panic_probe as _};
-
-struct RadioSwitch<'a> {
-    ctrl1: Output<'a, AnyPin>,
-    ctrl2: Output<'a, AnyPin>,
-    ctrl3: Output<'a, AnyPin>,
-}
-
-impl<'a> RadioSwitch<'a> {
-    fn new(ctrl1: Output<'a, AnyPin>, ctrl2: Output<'a, AnyPin>, ctrl3: Output<'a, AnyPin>) -> Self {
-        Self { ctrl1, ctrl2, ctrl3 }
-    }
-}
-
-impl<'a> embassy_lora::stm32wl::RadioSwitch for RadioSwitch<'a> {
-    fn set_rx(&mut self) {
-        self.ctrl1.set_high();
-        self.ctrl2.set_low();
-        self.ctrl3.set_high();
-    }
-
-    fn set_tx(&mut self) {
-        self.ctrl1.set_high();
-        self.ctrl2.set_high();
-        self.ctrl3.set_high();
-    }
-}
-
-#[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 ctrl1 = Output::new(p.PC3.degrade(), Level::High, Speed::High);
-    let ctrl2 = Output::new(p.PC4.degrade(), Level::High, Speed::High);
-    let ctrl3 = Output::new(p.PC5.degrade(), Level::High, Speed::High);
-    let rfs = RadioSwitch::new(ctrl1, ctrl2, ctrl3);
-
-    let radio = SubGhz::new(p.SUBGHZSPI, NoDma, NoDma);
-    let irq = interrupt::take!(SUBGHZ_RADIO);
-
-    let mut radio_config = SubGhzRadioConfig::default();
-    radio_config.calibrate_image = CalibrateImage::ISM_863_870;
-    let radio = SubGhzRadio::new(radio, rfs, irq, radio_config).unwrap();
-
-    let mut region = region::Configuration::new(region::Region::EU868);
-
-    // NOTE: This is specific for TTN, as they have a special RX1 delay
-    region.set_receive_delay1(5000);
-
-    let mut device: Device<_, Crypto, _, _> = Device::new(region, radio, LoraTimer::new(), Rng::new(p.RNG));
-
-    // Depending on network, this might be part of JOIN
-    device.set_datarate(region::DR::_0); // SF12
-
-    // device.set_datarate(region::DR::_1); // SF11
-    // device.set_datarate(region::DR::_2); // SF10
-    // device.set_datarate(region::DR::_3); // SF9
-    // device.set_datarate(region::DR::_4); // SF8
-    // device.set_datarate(region::DR::_5); // SF7
-
-    defmt::info!("Joining LoRaWAN network");
-
-    // TODO: Adjust the EUI and Keys according to your network credentials
-    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()
-        .unwrap();
-    defmt::info!("LoRaWAN network joined");
-
-    let mut rx: [u8; 255] = [0; 255];
-    defmt::info!("Sending 'PING'");
-    let len = device.send_recv(b"PING", &mut rx[..], 1, true).await.ok().unwrap();
-    if len > 0 {
-        defmt::info!("Message sent, received downlink: {:?}", &rx[..len]);
-    } else {
-        defmt::info!("Message sent!");
-    }
-}