Add samples for nrf5340

examples/nrf5340/.cargo/config.toml

@@ -0,0 +1,9 @@
+[target.'cfg(all(target_arch = "arm", target_os = "none"))']
+# replace nRF5340_xxAA with your chip as listed in `probe-run --list-chips`
+runner = "probe-run --chip nRF5340_xxAA"
+
+[build]
+target = "thumbv8m.main-none-eabihf"
+
+[env]
+DEFMT_LOG = "trace"

examples/nrf5340/Cargo.toml

@@ -0,0 +1,64 @@
+[package]
+edition = "2021"
+name = "embassy-nrf-examples"
+version = "0.1.0"
+license = "MIT OR Apache-2.0"
+
+[features]
+default = ["nightly"]
+nightly = [
+    "embassy-executor/nightly",
+    "embassy-nrf/nightly",
+    "embassy-net/nightly",
+    "embassy-nrf/unstable-traits",
+    "embassy-usb",
+    "embedded-io/async",
+    "embassy-net",
+]
+
+[dependencies]
+embassy-futures = { version = "0.1.0", path = "../../embassy-futures" }
+embassy-sync = { version = "0.1.0", path = "../../embassy-sync", features = [
+    "defmt",
+] }
+embassy-executor = { version = "0.1.0", path = "../../embassy-executor", features = [
+    "defmt",
+    "integrated-timers",
+] }
+embassy-time = { version = "0.1.0", path = "../../embassy-time", features = [
+    "defmt",
+    "defmt-timestamp-uptime",
+] }
+embassy-nrf = { version = "0.1.0", path = "../../embassy-nrf", features = [
+    "defmt",
+    "nrf5340-app-s",
+    "time-driver-rtc1",
+    "gpiote",
+    "unstable-pac",
+] }
+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",
+], optional = true }
+embedded-io = "0.4.0"
+
+
+defmt = "0.3"
+defmt-rtt = "0.4"
+
+static_cell = "1.0"
+cortex-m = { version = "0.7.6", features = ["critical-section-single-core"] }
+cortex-m-rt = "0.7.0"
+panic-probe = { version = "0.3", features = ["print-defmt"] }
+futures = { version = "0.3.17", default-features = false, features = [
+    "async-await",
+] }
+rand = { version = "0.8.4", default-features = false }
+embedded-storage = "0.3.0"
+usbd-hid = "0.6.0"
+serde = { version = "1.0.136", default-features = false }

examples/nrf5340/build.rs

@@ -0,0 +1,35 @@
+//! This build script copies the `memory.x` file from the crate root into
+//! a directory where the linker can always find it at build time.
+//! For many projects this is optional, as the linker always searches the
+//! project root directory -- wherever `Cargo.toml` is. However, if you
+//! are using a workspace or have a more complicated build setup, this
+//! build script becomes required. Additionally, by requesting that
+//! Cargo re-run the build script whenever `memory.x` is changed,
+//! updating `memory.x` ensures a rebuild of the application with the
+//! new memory settings.
+
+use std::env;
+use std::fs::File;
+use std::io::Write;
+use std::path::PathBuf;
+
+fn main() {
+    // Put `memory.x` in our output directory and ensure it's
+    // on the linker search path.
+    let out = &PathBuf::from(env::var_os("OUT_DIR").unwrap());
+    File::create(out.join("memory.x"))
+        .unwrap()
+        .write_all(include_bytes!("memory.x"))
+        .unwrap();
+    println!("cargo:rustc-link-search={}", out.display());
+
+    // By default, Cargo will re-run a build script whenever
+    // any file in the project changes. By specifying `memory.x`
+    // here, we ensure the build script is only re-run when
+    // `memory.x` is changed.
+    println!("cargo:rerun-if-changed=memory.x");
+
+    println!("cargo:rustc-link-arg-bins=--nmagic");
+    println!("cargo:rustc-link-arg-bins=-Tlink.x");
+    println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
+}

examples/nrf5340/memory.x

@@ -0,0 +1,7 @@
+MEMORY
+{
+  /* NOTE 1 K = 1 KiBi = 1024 bytes */
+  /* These values correspond to the NRF5340 */
+  FLASH : ORIGIN = 0x00000000, LENGTH = 1024K
+  RAM : ORIGIN = 0x20000000, LENGTH = 256K
+}

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;
+    }
+}