Initial add for sx126x

3 files changed, 263 insertions, 1 deletions

diff --git a/examples/nrf/Cargo.toml b/examples/nrf/Cargo.toml
index a5d340c69..54df16ba0 100644
--- a/examples/nrf/Cargo.toml
+++ b/examples/nrf/Cargo.toml
@@ -5,7 +5,8 @@ version = "0.1.0"
 
 [features]
 default = ["nightly"]
-nightly = ["embassy-executor/nightly", "embassy-nrf/nightly", "embassy-net/nightly", "embassy-nrf/unstable-traits", "embassy-usb", "embedded-io/async", "embassy-net"]
+nightly = ["embassy-executor/nightly", "embassy-nrf/nightly", "embassy-net/nightly", "embassy-nrf/unstable-traits", "embassy-usb", "embedded-io/async", "embassy-net",
+           "embassy-lora", "lorawan-device", "lorawan"]
 
 [dependencies]
 embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
@@ -16,6 +17,10 @@ embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = ["defm
 embassy-net = { version = "0.1.0", path = "../../embassy-net", features = ["defmt", "tcp", "dhcpv4", "medium-ethernet", "pool-16"], optional = true }
 embassy-usb = { version = "0.1.0", path = "../../embassy-usb", features = ["defmt"], optional = true }
 embedded-io = "0.3.0"
+embassy-lora = { version = "0.1.0", path = "../../embassy-lora", features = ["rak4631", "time", "defmt"], optional = true }
+
+lorawan-device = { version = "0.8.0", default-features = false, features = ["async"], optional = true }
+lorawan = { version = "0.7.1", default-features = false, features = ["default-crypto"], optional = true }
 
 defmt = "0.3"
 defmt-rtt = "0.3"
diff --git a/examples/nrf/src/bin/lora_p2p_report.rs b/examples/nrf/src/bin/lora_p2p_report.rs
new file mode 100644
index 000000000..46cb848b1
--- /dev/null
+++ b/examples/nrf/src/bin/lora_p2p_report.rs
@@ -0,0 +1,84 @@
+//! This example runs on the RAK4631 WisBlock, which has an nRF52840 MCU and Semtech Sx126x radio.
+#![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::M1; // 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, Level::High, OutputDrive::Standard);
+        let reset = Output::new(p.P1_06, 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, Level::Low, OutputDrive::Standard);
+        let antenna_tx = Output::new(p.P1_07, 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();
+
+    match radio.lora.sleep().await {
+        Ok(()) => info!("Sleep successful"),
+        Err(err) => info!("Sleep unsuccessful = {}", err),
+    }
+
+    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),
+    }
+
+    match radio.lora.sleep().await {
+        Ok(()) => info!("Sleep successful"),
+        Err(err) => info!("Sleep unsuccessful = {}", err),
+    }
+
+    debug_indicator.set_high();
+    Timer::after(Duration::from_secs(5)).await;
+    debug_indicator.set_low();
+}
diff --git a/examples/nrf/src/bin/lora_p2p_sense.rs b/examples/nrf/src/bin/lora_p2p_sense.rs
new file mode 100644
index 000000000..57aaea665
--- /dev/null
+++ b/examples/nrf/src/bin/lora_p2p_sense.rs
@@ -0,0 +1,173 @@
+//! This example runs on the RAK4631 WisBlock, which has an nRF52840 MCU and Semtech Sx126x radio.
+#![no_std]
+#![no_main]
+#![macro_use]
+#![feature(type_alias_impl_trait)]
+#![feature(alloc_error_handler)]
+#![allow(incomplete_features)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_lora::sx126x::*;
+use embassy_nrf::gpio::{AnyPin, Input, Level, Output, OutputDrive, Pin as _, Pull};
+use embassy_nrf::temp::Temp;
+use embassy_nrf::{interrupt, spim};
+use embassy_sync::blocking_mutex::raw::CriticalSectionRawMutex;
+use embassy_sync::pubsub::{PubSubChannel, Publisher};
+use embassy_time::{Duration, Timer};
+use lorawan_device::async_device::radio::{Bandwidth, CodingRate, PhyRxTx, RfConfig, SpreadingFactor, TxConfig};
+use {defmt_rtt as _, panic_probe as _, panic_probe as _};
+
+// Sensor packet constants
+const TEMPERATURE_UID: u8 = 0x01;
+const MOTION_UID: u8 = 0x02;
+
+// Message bus: queue of 2, 1 subscriber (Lora P2P), 2 publishers (temperature, motion detection)
+static MESSAGE_BUS: PubSubChannel<CriticalSectionRawMutex, Message, 2, 1, 2> = PubSubChannel::new();
+
+#[derive(Clone, defmt::Format)]
+enum Message {
+    Temperature(i32),
+    MotionDetected,
+}
+
+#[embassy_executor::task]
+async fn temperature_task(
+    mut temperature: Temp<'static>,
+    publisher: Publisher<'static, CriticalSectionRawMutex, Message, 2, 1, 2>,
+) {
+    Timer::after(Duration::from_secs(45)).await; // stabilize for 45 seconds
+
+    let mut temperature_reporting_threshhold = 10;
+
+    loop {
+        let value = temperature.read().await;
+        let mut temperature_val = value.to_num::<i32>();
+
+        info!("Temperature: {}", temperature_val); // debug ???
+
+        // only report every 2 degree Celsius drops, from 9 through 5, but starting at 3 always report
+
+        if temperature_val == 8 || temperature_val == 6 || temperature_val == 4 {
+            temperature_val += 1;
+        }
+
+        if temperature_reporting_threshhold > temperature_val
+            && (temperature_val == 9 || temperature_val == 7 || temperature_val == 5)
+        {
+            temperature_reporting_threshhold = temperature_val;
+            publisher.publish(Message::Temperature(temperature_val)).await;
+        } else if temperature_val <= 3 {
+            publisher.publish(Message::Temperature(temperature_val)).await;
+        }
+
+        Timer::after(Duration::from_secs(20 * 60)).await;
+    }
+}
+
+#[embassy_executor::task]
+async fn motion_detection_task(
+    mut pir_pin: Input<'static, AnyPin>,
+    publisher: Publisher<'static, CriticalSectionRawMutex, Message, 2, 1, 2>,
+) {
+    Timer::after(Duration::from_secs(30)).await; // stabilize for 30 seconds
+
+    loop {
+        // wait for motion detection
+        pir_pin.wait_for_low().await;
+        publisher.publish(Message::MotionDetected).await;
+
+        // wait a minute before setting up for more motion detection
+        Timer::after(Duration::from_secs(60)).await;
+    }
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    // set up to funnel temperature and motion detection events to the Lora Tx task
+    let mut lora_tx_subscriber = unwrap!(MESSAGE_BUS.subscriber());
+    let temperature_publisher = unwrap!(MESSAGE_BUS.publisher());
+    let motion_detection_publisher = unwrap!(MESSAGE_BUS.publisher());
+
+    let mut spi_config = spim::Config::default();
+    spi_config.frequency = spim::Frequency::M1; // 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, Level::High, OutputDrive::Standard);
+        let reset = Output::new(p.P1_06, 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, Level::Low, OutputDrive::Standard);
+        let antenna_tx = Output::new(p.P1_07, 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;
+            }
+        }
+    };
+
+    // set up for the temperature task
+    let temperature_irq = interrupt::take!(TEMP);
+    let temperature = Temp::new(p.TEMP, temperature_irq);
+
+    // set the motion detection pin
+    let pir_pin = Input::new(p.P0_10.degrade(), Pull::Up);
+
+    let mut start_indicator = Output::new(p.P1_04, Level::Low, OutputDrive::Standard);
+    let mut debug_indicator = Output::new(p.P1_03, Level::Low, OutputDrive::Standard);
+
+    start_indicator.set_high();
+    Timer::after(Duration::from_secs(5)).await;
+    start_indicator.set_low();
+
+    match radio.lora.sleep().await {
+        Ok(()) => info!("Sleep successful"),
+        Err(err) => info!("Sleep unsuccessful = {}", err),
+    }
+
+    unwrap!(spawner.spawn(temperature_task(temperature, temperature_publisher)));
+    unwrap!(spawner.spawn(motion_detection_task(pir_pin, motion_detection_publisher)));
+
+    loop {
+        let message = lora_tx_subscriber.next_message_pure().await;
+
+        let tx_config = TxConfig {
+            // 11 byte maximum payload for Bandwidth 125 and SF 10
+            pw: 20, // up to 20 // 5 ???
+            rf: RfConfig {
+                frequency: 903900000, // channel in Hz, not MHz
+                bandwidth: Bandwidth::_250KHz,
+                spreading_factor: SpreadingFactor::_10,
+                coding_rate: CodingRate::_4_8,
+            },
+        };
+
+        let mut buffer = [TEMPERATURE_UID, 0xffu8, MOTION_UID, 0x00u8];
+        match message {
+            Message::Temperature(temperature) => buffer[1] = temperature as u8,
+            Message::MotionDetected => buffer[3] = 0x01u8,
+        };
+
+        // crypto for text ???
+        match radio.tx(tx_config, &buffer).await {
+            Ok(ret_val) => info!("TX ret_val = {}", ret_val),
+            Err(err) => info!("TX error = {}", err),
+        }
+
+        match radio.lora.sleep().await {
+            Ok(()) => info!("Sleep successful"),
+            Err(err) => info!("Sleep unsuccessful = {}", err),
+        }
+
+        debug_indicator.set_high();
+        Timer::after(Duration::from_secs(5)).await;
+        debug_indicator.set_low();
+    }
+}