Add samples for nrf5340

examples/nrf5340/src/bin/awaitable_timer.rs

@@ -0,0 +1,26 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::info;
+use embassy_executor::Spawner;
+use embassy_nrf::interrupt;
+use embassy_nrf::timer::Timer;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut t = Timer::new_awaitable(p.TIMER0, interrupt::take!(TIMER0));
+    // default frequency is 1MHz, so this triggers every second
+    t.cc(0).write(1_000_000);
+    // clear the timer value on cc[0] compare match
+    t.cc(0).short_compare_clear();
+    t.start();
+
+    loop {
+        // wait for compare match
+        t.cc(0).wait().await;
+        info!("hardware timer tick");
+    }
+}

examples/nrf5340/src/bin/blinky.rs

@@ -0,0 +1,21 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use embassy_executor::Spawner;
+use embassy_nrf::gpio::{Level, Output, OutputDrive};
+use embassy_time::{Duration, Timer};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut led = Output::new(p.P0_28, Level::Low, OutputDrive::Standard);
+
+    loop {
+        led.set_high();
+        Timer::after(Duration::from_millis(300)).await;
+        led.set_low();
+        Timer::after(Duration::from_millis(300)).await;
+    }
+}

examples/nrf5340/src/bin/buffered_uart.rs

@@ -0,0 +1,57 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_nrf::buffered_uarte::{BufferedUarte, State};
+use embassy_nrf::{interrupt, uarte};
+use embedded_io::asynch::{BufRead, Write};
+use futures::pin_mut;
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut config = uarte::Config::default();
+    config.parity = uarte::Parity::EXCLUDED;
+    config.baudrate = uarte::Baudrate::BAUD115200;
+
+    let mut tx_buffer = [0u8; 4096];
+    let mut rx_buffer = [0u8; 4096];
+
+    let irq = interrupt::take!(SERIAL0);
+    let mut state = State::new();
+    // Please note - important to have hardware flow control (https://github.com/embassy-rs/embassy/issues/536)
+    let u = BufferedUarte::new(
+        &mut state,
+        p.UARTETWISPI0,
+        p.TIMER0,
+        p.PPI_CH0,
+        p.PPI_CH1,
+        irq,
+        p.P0_08,
+        p.P0_06,
+        p.P0_07,
+        p.P0_05,
+        config,
+        &mut rx_buffer,
+        &mut tx_buffer,
+    );
+    pin_mut!(u);
+
+    info!("uarte initialized!");
+
+    unwrap!(u.write_all(b"Hello!\r\n").await);
+    info!("wrote hello in uart!");
+
+    loop {
+        info!("reading...");
+        let buf = unwrap!(u.fill_buf().await);
+        info!("read done, got {}", buf);
+
+        // Read bytes have to be explicitly consumed, otherwise fill_buf() will return them again
+        let n = buf.len();
+        u.consume(n);
+    }
+}

examples/nrf5340/src/bin/channel.rs

@@ -0,0 +1,43 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::unwrap;
+use embassy_executor::Spawner;
+use embassy_nrf::gpio::{Level, Output, OutputDrive};
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::Channel;
+use embassy_time::{Duration, Timer};
+use {defmt_rtt as _, panic_probe as _};
+
+enum LedState {
+    On,
+    Off,
+}
+
+static CHANNEL: Channel<ThreadModeRawMutex, LedState, 1> = Channel::new();
+
+#[embassy_executor::task]
+async fn my_task() {
+    loop {
+        CHANNEL.send(LedState::On).await;
+        Timer::after(Duration::from_secs(1)).await;
+        CHANNEL.send(LedState::Off).await;
+        Timer::after(Duration::from_secs(1)).await;
+    }
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut led = Output::new(p.P0_28, Level::Low, OutputDrive::Standard);
+
+    unwrap!(spawner.spawn(my_task()));
+
+    loop {
+        match CHANNEL.recv().await {
+            LedState::On => led.set_high(),
+            LedState::Off => led.set_low(),
+        }
+    }
+}

examples/nrf5340/src/bin/channel_sender_receiver.rs

@@ -0,0 +1,50 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::unwrap;
+use embassy_executor::Spawner;
+use embassy_nrf::gpio::{AnyPin, Level, Output, OutputDrive, Pin};
+use embassy_sync::blocking_mutex::raw::NoopRawMutex;
+use embassy_sync::channel::{Channel, Receiver, Sender};
+use embassy_time::{Duration, Timer};
+use static_cell::StaticCell;
+use {defmt_rtt as _, panic_probe as _};
+
+enum LedState {
+    On,
+    Off,
+}
+
+static CHANNEL: StaticCell<Channel<NoopRawMutex, LedState, 1>> = StaticCell::new();
+
+#[embassy_executor::task]
+async fn send_task(sender: Sender<'static, NoopRawMutex, LedState, 1>) {
+    loop {
+        sender.send(LedState::On).await;
+        Timer::after(Duration::from_secs(1)).await;
+        sender.send(LedState::Off).await;
+        Timer::after(Duration::from_secs(1)).await;
+    }
+}
+
+#[embassy_executor::task]
+async fn recv_task(led: AnyPin, receiver: Receiver<'static, NoopRawMutex, LedState, 1>) {
+    let mut led = Output::new(led, Level::Low, OutputDrive::Standard);
+
+    loop {
+        match receiver.recv().await {
+            LedState::On => led.set_high(),
+            LedState::Off => led.set_low(),
+        }
+    }
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let channel = CHANNEL.init(Channel::new());
+
+    unwrap!(spawner.spawn(send_task(channel.sender())));
+    unwrap!(spawner.spawn(recv_task(p.P0_28.degrade(), channel.receiver())));
+}

examples/nrf5340/src/bin/gpiote_channel.rs

@@ -0,0 +1,66 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::info;
+use embassy_executor::Spawner;
+use embassy_nrf::gpio::{Input, Pull};
+use embassy_nrf::gpiote::{InputChannel, InputChannelPolarity};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    info!("Starting!");
+
+    let ch1 = InputChannel::new(
+        p.GPIOTE_CH0,
+        Input::new(p.P0_23, Pull::Up),
+        InputChannelPolarity::HiToLo,
+    );
+    let ch2 = InputChannel::new(
+        p.GPIOTE_CH1,
+        Input::new(p.P0_24, Pull::Up),
+        InputChannelPolarity::LoToHi,
+    );
+    let ch3 = InputChannel::new(
+        p.GPIOTE_CH2,
+        Input::new(p.P0_08, Pull::Up),
+        InputChannelPolarity::Toggle,
+    );
+    let ch4 = InputChannel::new(
+        p.GPIOTE_CH3,
+        Input::new(p.P0_09, Pull::Up),
+        InputChannelPolarity::Toggle,
+    );
+
+    let button1 = async {
+        loop {
+            ch1.wait().await;
+            info!("Button 1 pressed")
+        }
+    };
+
+    let button2 = async {
+        loop {
+            ch2.wait().await;
+            info!("Button 2 released")
+        }
+    };
+
+    let button3 = async {
+        loop {
+            ch3.wait().await;
+            info!("Button 3 toggled")
+        }
+    };
+
+    let button4 = async {
+        loop {
+            ch4.wait().await;
+            info!("Button 4 toggled")
+        }
+    };
+
+    futures::join!(button1, button2, button3, button4);
+}

examples/nrf5340/src/bin/gpiote_port.rs

@@ -0,0 +1,34 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::{info, unwrap};
+use embassy_executor::Spawner;
+use embassy_nrf::gpio::{AnyPin, Input, Pin as _, Pull};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::task(pool_size = 4)]
+async fn button_task(n: usize, mut pin: Input<'static, AnyPin>) {
+    loop {
+        pin.wait_for_low().await;
+        info!("Button {:?} pressed!", n);
+        pin.wait_for_high().await;
+        info!("Button {:?} released!", n);
+    }
+}
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    info!("Starting!");
+
+    let btn1 = Input::new(p.P0_23.degrade(), Pull::Up);
+    let btn2 = Input::new(p.P0_24.degrade(), Pull::Up);
+    let btn3 = Input::new(p.P0_08.degrade(), Pull::Up);
+    let btn4 = Input::new(p.P0_09.degrade(), Pull::Up);
+
+    unwrap!(spawner.spawn(button_task(1, btn1)));
+    unwrap!(spawner.spawn(button_task(2, btn2)));
+    unwrap!(spawner.spawn(button_task(3, btn3)));
+    unwrap!(spawner.spawn(button_task(4, btn4)));
+}

examples/nrf5340/src/bin/uart.rs

@@ -0,0 +1,35 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_nrf::{interrupt, uarte};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut config = uarte::Config::default();
+    config.parity = uarte::Parity::EXCLUDED;
+    config.baudrate = uarte::Baudrate::BAUD115200;
+
+    let irq = interrupt::take!(SERIAL0);
+    let mut uart = uarte::Uarte::new(p.UARTETWISPI0, irq, p.P0_08, p.P0_06, config);
+
+    info!("uarte initialized!");
+
+    // Message must be in SRAM
+    let mut buf = [0; 8];
+    buf.copy_from_slice(b"Hello!\r\n");
+
+    unwrap!(uart.write(&buf).await);
+    info!("wrote hello in uart!");
+
+    loop {
+        info!("reading...");
+        unwrap!(uart.read(&mut buf).await);
+        info!("writing...");
+        unwrap!(uart.write(&buf).await);
+    }
+}

examples/nrf5340/src/bin/uart_idle.rs

@@ -0,0 +1,35 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_nrf::{interrupt, uarte};
+use {defmt_rtt as _, panic_probe as _};
+
+#[embassy_executor::main]
+async fn main(_spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut config = uarte::Config::default();
+    config.parity = uarte::Parity::EXCLUDED;
+    config.baudrate = uarte::Baudrate::BAUD115200;
+
+    let irq = interrupt::take!(SERIAL0);
+    let uart = uarte::Uarte::new(p.UARTETWISPI0, irq, p.P0_08, p.P0_06, config);
+    let (mut tx, mut rx) = uart.split_with_idle(p.TIMER0, p.PPI_CH0, p.PPI_CH1);
+
+    info!("uarte initialized!");
+
+    // Message must be in SRAM
+    let mut buf = [0; 8];
+    buf.copy_from_slice(b"Hello!\r\n");
+
+    unwrap!(tx.write(&buf).await);
+    info!("wrote hello in uart!");
+
+    loop {
+        info!("reading...");
+        let n = unwrap!(rx.read_until_idle(&mut buf).await);
+        info!("got {} bytes", n);
+    }
+}

examples/nrf5340/src/bin/uart_split.rs

@@ -0,0 +1,60 @@
+#![no_std]
+#![no_main]
+#![feature(type_alias_impl_trait)]
+
+use defmt::*;
+use embassy_executor::Spawner;
+use embassy_nrf::peripherals::UARTETWISPI0;
+use embassy_nrf::uarte::UarteRx;
+use embassy_nrf::{interrupt, uarte};
+use embassy_sync::blocking_mutex::raw::ThreadModeRawMutex;
+use embassy_sync::channel::Channel;
+use {defmt_rtt as _, panic_probe as _};
+
+static CHANNEL: Channel<ThreadModeRawMutex, [u8; 8], 1> = Channel::new();
+
+#[embassy_executor::main]
+async fn main(spawner: Spawner) {
+    let p = embassy_nrf::init(Default::default());
+    let mut config = uarte::Config::default();
+    config.parity = uarte::Parity::EXCLUDED;
+    config.baudrate = uarte::Baudrate::BAUD115200;
+
+    let irq = interrupt::take!(SERIAL0);
+    let uart = uarte::Uarte::new(p.UARTETWISPI0, irq, p.P0_08, p.P0_06, config);
+    let (mut tx, rx) = uart.split();
+
+    info!("uarte initialized!");
+
+    // Spawn a task responsible purely for reading
+
+    unwrap!(spawner.spawn(reader(rx)));
+
+    // Message must be in SRAM
+    {
+        let mut buf = [0; 23];
+        buf.copy_from_slice(b"Type 8 chars to echo!\r\n");
+
+        unwrap!(tx.write(&buf).await);
+        info!("wrote hello in uart!");
+    }
+
+    // Continue reading in this main task and write
+    // back out the buffer we receive from the read
+    // task.
+    loop {
+        let buf = CHANNEL.recv().await;
+        info!("writing...");
+        unwrap!(tx.write(&buf).await);
+    }
+}
+
+#[embassy_executor::task]
+async fn reader(mut rx: UarteRx<'static, UARTETWISPI0>) {
+    let mut buf = [0; 8];
+    loop {
+        info!("reading...");
+        unwrap!(rx.read(&mut buf).await);
+        CHANNEL.send(buf).await;
+    }
+}