Initialize with embassy examples

This commit is contained in:
Jana Lemke 2025-03-29 17:49:32 +01:00
parent 010a48ad7c
commit f721a46b2d
13 changed files with 1479 additions and 0 deletions

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.cargo/config.toml Normal file
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[target.'cfg(all(target_arch = "arm", target_os = "none"))']
# replace STM32F103C8 with your chip as listed in `probe-rs chip list`
runner = "probe-rs run --chip STM32F103C8"
[build]
target = "thumbv7m-none-eabi"
[env]
DEFMT_LOG = "trace"

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target

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Cargo.lock generated Normal file
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name = "panic-probe"
version = "0.3.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "4047d9235d1423d66cc97da7d07eddb54d4f154d6c13805c6d0793956f4f25b0"
dependencies = [
"cortex-m",
"defmt",
]
[[package]]
name = "pin-project-lite"
version = "0.2.16"
source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "pin-utils"
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source = "registry+https://github.com/rust-lang/crates.io-index"
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dependencies = [
"proc-macro2",
"quote",
]
[[package]]
name = "proc-macro-error2"
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"proc-macro-error-attr2",
"proc-macro2",
"quote",
"syn 2.0.100",
]
[[package]]
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source = "registry+https://github.com/rust-lang/crates.io-index"
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"unicode-ident",
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"proc-macro2",
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"semver",
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"semver-parser",
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"serde_derive",
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name = "serde_derive"
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dependencies = [
"proc-macro2",
"quote",
"syn 2.0.100",
]
[[package]]
name = "ssmarshal"
version = "1.0.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
checksum = "f3e6ad23b128192ed337dfa4f1b8099ced0c2bf30d61e551b65fda5916dbb850"
dependencies = [
"encode_unicode",
"serde",
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[[package]]
name = "stable_deref_trait"
version = "1.2.0"
source = "registry+https://github.com/rust-lang/crates.io-index"
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name = "static_assertions"
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"embedded-hal 0.2.7",
]
[[package]]
name = "stm32-metapac"
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"cortex-m-rt",
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name = "usbd-hid"
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name = "usbd-hid-descriptors"
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31
Cargo.toml Normal file
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@ -0,0 +1,31 @@
[package]
edition = "2024"
name = "buzzer-firmware"
version = "0.1.0"
license = "MIT OR Apache-2.0"
[dependencies]
# Change stm32f103c8 to your chip name, if necessary.
embassy-stm32 = { version = "0.2.0", features = [ "defmt", "stm32f103c8", "unstable-pac", "memory-x", "time-driver-any" ] }
embassy-sync = { version = "0.6.2", features = ["defmt"] }
embassy-executor = { version = "0.7.0", features = ["arch-cortex-m", "executor-thread", "defmt"] }
embassy-time = { version = "0.4.0", features = ["defmt", "defmt-timestamp-uptime", "tick-hz-32_768"] }
embassy-usb = { version = "0.4.0", features = ["defmt"] }
embassy-futures = { version = "0.1.0"}
defmt = "0.3"
defmt-rtt = "0.4"
cortex-m = { version = "0.7.6", features = ["inline-asm", "critical-section-single-core"] }
cortex-m-rt = "0.7.0"
embedded-hal = "0.2.6"
panic-probe = { version = "0.3", features = ["print-defmt"] }
heapless = { version = "0.8", default-features = false }
nb = "1.0.0"
static_cell = "2.0.0"
[profile.dev]
opt-level = "s"
[profile.release]
debug = 2

5
build.rs Normal file
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@ -0,0 +1,5 @@
fn main() {
println!("cargo:rustc-link-arg-bins=--nmagic");
println!("cargo:rustc-link-arg-bins=-Tlink.x");
println!("cargo:rustc-link-arg-bins=-Tdefmt.x");
}

4
rust-toolchain.toml Normal file
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@ -0,0 +1,4 @@
[toolchain]
channel = "1.85"
components = [ "rust-src", "rustfmt", "llvm-tools", "miri" ]
targets = ["thumbv7m-none-eabi"]

39
src/bin/adc.rs Normal file
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@ -0,0 +1,39 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::adc::Adc;
use embassy_stm32::peripherals::ADC1;
use embassy_stm32::{adc, bind_interrupts};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
ADC1_2 => adc::InterruptHandler<ADC1>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
info!("Hello World!");
let mut adc = Adc::new(p.ADC1);
let mut pin = p.PB1;
let mut vrefint = adc.enable_vref();
let vrefint_sample = adc.read(&mut vrefint).await;
let convert_to_millivolts = |sample| {
// From http://www.st.com/resource/en/datasheet/CD00161566.pdf
// 5.3.4 Embedded reference voltage
const VREFINT_MV: u32 = 1200; // mV
(u32::from(sample) * VREFINT_MV / u32::from(vrefint_sample)) as u16
};
loop {
let v = adc.read(&mut pin).await;
info!("--> {} - {} mV", v, convert_to_millivolts(v));
Timer::after_millis(100).await;
}
}

26
src/bin/blinky.rs Normal file
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@ -0,0 +1,26 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
info!("Hello World!");
let mut led = Output::new(p.PC13, Level::High, Speed::Low);
loop {
info!("high");
led.set_high();
Timer::after_millis(300).await;
info!("low");
led.set_low();
Timer::after_millis(300).await;
}
}

140
src/bin/can.rs Normal file
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@ -0,0 +1,140 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::can::frame::Envelope;
use embassy_stm32::can::{
filter, Can, Fifo, Frame, Id, Rx0InterruptHandler, Rx1InterruptHandler, SceInterruptHandler, StandardId,
TxInterruptHandler,
};
use embassy_stm32::peripherals::CAN;
use embassy_stm32::{bind_interrupts, Config};
use static_cell::StaticCell;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
USB_LP_CAN1_RX0 => Rx0InterruptHandler<CAN>;
CAN1_RX1 => Rx1InterruptHandler<CAN>;
CAN1_SCE => SceInterruptHandler<CAN>;
USB_HP_CAN1_TX => TxInterruptHandler<CAN>;
});
// This example is configured to work with real CAN transceivers on B8/B9.
// See other examples for loopback.
fn handle_frame(env: Envelope, read_mode: &str) {
match env.frame.id() {
Id::Extended(id) => {
defmt::println!(
"{} Extended Frame id={:x} {:02x}",
read_mode,
id.as_raw(),
env.frame.data()
);
}
Id::Standard(id) => {
defmt::println!(
"{} Standard Frame id={:x} {:02x}",
read_mode,
id.as_raw(),
env.frame.data()
);
}
}
}
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let p = embassy_stm32::init(Config::default());
// Set alternate pin mapping to B8/B9
embassy_stm32::pac::AFIO.mapr().modify(|w| w.set_can1_remap(2));
static RX_BUF: StaticCell<embassy_stm32::can::RxBuf<10>> = StaticCell::new();
static TX_BUF: StaticCell<embassy_stm32::can::TxBuf<10>> = StaticCell::new();
let mut can = Can::new(p.CAN, p.PB8, p.PB9, Irqs);
can.modify_filters()
.enable_bank(0, Fifo::Fifo0, filter::Mask32::accept_all());
can.modify_config()
.set_loopback(false)
.set_silent(false)
.set_bitrate(250_000);
can.enable().await;
let mut i: u8 = 0;
/*
// Example for using buffered Tx and Rx without needing to
// split first as is done below.
let mut can = can.buffered(
TX_BUF.init(embassy_stm32::can::TxBuf::<10>::new()),
RX_BUF.init(embassy_stm32::can::RxBuf::<10>::new()));
loop {
let tx_frame = Frame::new_data(unwrap!(StandardId::new(i as _)), &[i, 0, 1, 2, 3, 4, 5, 6]).unwrap();
can.write(&tx_frame).await;
match can.read().await {
Ok((frame, ts)) => {
handle_frame(Envelope { ts, frame }, "Buf");
}
Err(err) => {
defmt::println!("Error {}", err);
}
}
i = i.wrapping_add(1);
}
*/
let (mut tx, mut rx) = can.split();
// This example shows using the wait_not_empty API before try read
while i < 3 {
let tx_frame = Frame::new_data(unwrap!(StandardId::new(i as _)), &[i, 0, 1, 2, 3, 4, 5, 6]).unwrap();
tx.write(&tx_frame).await;
rx.wait_not_empty().await;
let env = rx.try_read().unwrap();
handle_frame(env, "Wait");
i += 1;
}
// This example shows using the full async non-buffered API
while i < 6 {
let tx_frame = Frame::new_data(unwrap!(StandardId::new(i as _)), &[i, 0, 1, 2, 3, 4, 5, 6]).unwrap();
tx.write(&tx_frame).await;
match rx.read().await {
Ok(env) => {
handle_frame(env, "NoBuf");
}
Err(err) => {
defmt::println!("Error {}", err);
}
}
i += 1;
}
// This example shows using buffered RX and TX. User passes in desired buffer (size)
// It's possible this way to have just RX or TX buffered.
let mut rx = rx.buffered(RX_BUF.init(embassy_stm32::can::RxBuf::<10>::new()));
let mut tx = tx.buffered(TX_BUF.init(embassy_stm32::can::TxBuf::<10>::new()));
loop {
let tx_frame = Frame::new_data(unwrap!(StandardId::new(i as _)), &[i, 0, 1, 2, 3, 4, 5, 6]).unwrap();
tx.write(&tx_frame).await;
match rx.read().await {
Ok(envelope) => {
handle_frame(envelope, "Buf");
}
Err(err) => {
defmt::println!("Error {}", err);
}
}
i = i.wrapping_add(1);
}
}

19
src/bin/hello.rs Normal file
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@ -0,0 +1,19 @@
#![no_std]
#![no_main]
use defmt::info;
use embassy_executor::Spawner;
use embassy_stm32::Config;
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
#[embassy_executor::main]
async fn main(_spawner: Spawner) -> ! {
let config = Config::default();
let _p = embassy_stm32::init(config);
loop {
info!("Hello World!");
Timer::after_secs(1).await;
}
}

52
src/bin/input_capture.rs Normal file
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@ -0,0 +1,52 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::gpio::{Level, Output, Pull, Speed};
use embassy_stm32::time::khz;
use embassy_stm32::timer::input_capture::{CapturePin, InputCapture};
use embassy_stm32::timer::{self, Channel};
use embassy_stm32::{bind_interrupts, peripherals, Peri};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
/// Connect PA2 and PC13 with a 1k Ohm resistor
#[embassy_executor::task]
async fn blinky(led: Peri<'static, peripherals::PC13>) {
let mut led = Output::new(led, Level::High, Speed::Low);
loop {
info!("high");
led.set_high();
Timer::after_millis(300).await;
info!("low");
led.set_low();
Timer::after_millis(300).await;
}
}
bind_interrupts!(struct Irqs {
TIM2 => timer::CaptureCompareInterruptHandler<peripherals::TIM2>;
});
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
info!("Hello World!");
unwrap!(spawner.spawn(blinky(p.PC13)));
let ch3 = CapturePin::new_ch3(p.PA2, Pull::None);
let mut ic = InputCapture::new(p.TIM2, None, None, Some(ch3), None, Irqs, khz(1000), Default::default());
loop {
info!("wait for rising edge");
ic.wait_for_rising_edge(Channel::Ch3).await;
let capture_value = ic.get_capture_value(Channel::Ch3);
info!("new capture! {}", capture_value);
}
}

54
src/bin/pwm_input.rs Normal file
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@ -0,0 +1,54 @@
#![no_std]
#![no_main]
use defmt::*;
use embassy_executor::Spawner;
use embassy_stm32::gpio::{Level, Output, Pull, Speed};
use embassy_stm32::time::khz;
use embassy_stm32::timer::pwm_input::PwmInput;
use embassy_stm32::{bind_interrupts, peripherals, timer, Peri};
use embassy_time::Timer;
use {defmt_rtt as _, panic_probe as _};
/// Connect PA0 and PC13 with a 1k Ohm resistor
#[embassy_executor::task]
async fn blinky(led: Peri<'static, peripherals::PC13>) {
let mut led = Output::new(led, Level::High, Speed::Low);
loop {
info!("high");
led.set_high();
Timer::after_millis(300).await;
info!("low");
led.set_low();
Timer::after_millis(300).await;
}
}
bind_interrupts!(struct Irqs {
TIM2 => timer::CaptureCompareInterruptHandler<peripherals::TIM2>;
});
#[embassy_executor::main]
async fn main(spawner: Spawner) {
let p = embassy_stm32::init(Default::default());
info!("Hello World!");
unwrap!(spawner.spawn(blinky(p.PC13)));
let mut pwm_input = PwmInput::new(p.TIM2, p.PA0, Pull::None, khz(10));
pwm_input.enable();
loop {
Timer::after_millis(500).await;
let period = pwm_input.get_period_ticks();
let width = pwm_input.get_width_ticks();
let duty_cycle = pwm_input.get_duty_cycle();
info!(
"period ticks: {} width ticks: {} duty cycle: {}",
period, width, duty_cycle
);
}
}

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src/bin/usb_serial.rs Normal file
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#![no_std]
#![no_main]
use defmt::{panic, *};
use embassy_executor::Spawner;
use embassy_futures::join::join;
use embassy_stm32::gpio::{Level, Output, Speed};
use embassy_stm32::time::Hertz;
use embassy_stm32::usb::{Driver, Instance};
use embassy_stm32::{bind_interrupts, peripherals, usb, Config};
use embassy_time::Timer;
use embassy_usb::class::cdc_acm::{CdcAcmClass, State};
use embassy_usb::driver::EndpointError;
use embassy_usb::Builder;
use {defmt_rtt as _, panic_probe as _};
bind_interrupts!(struct Irqs {
USB_LP_CAN1_RX0 => usb::InterruptHandler<peripherals::USB>;
});
#[embassy_executor::main]
async fn main(_spawner: Spawner) {
let mut config = Config::default();
{
use embassy_stm32::rcc::*;
config.rcc.hse = Some(Hse {
freq: Hertz(8_000_000),
// Oscillator for bluepill, Bypass for nucleos.
mode: HseMode::Oscillator,
});
config.rcc.pll = Some(Pll {
src: PllSource::HSE,
prediv: PllPreDiv::DIV1,
mul: PllMul::MUL9,
});
config.rcc.sys = Sysclk::PLL1_P;
config.rcc.ahb_pre = AHBPrescaler::DIV1;
config.rcc.apb1_pre = APBPrescaler::DIV2;
config.rcc.apb2_pre = APBPrescaler::DIV1;
}
let mut p = embassy_stm32::init(config);
info!("Hello World!");
{
// BluePill board has a pull-up resistor on the D+ line.
// Pull the D+ pin down to send a RESET condition to the USB bus.
// This forced reset is needed only for development, without it host
// will not reset your device when you upload new firmware.
let _dp = Output::new(p.PA12.reborrow(), Level::Low, Speed::Low);
Timer::after_millis(10).await;
}
// Create the driver, from the HAL.
let driver = Driver::new(p.USB, Irqs, p.PA12, p.PA11);
// Create embassy-usb Config
let config = embassy_usb::Config::new(0xc0de, 0xcafe);
//config.max_packet_size_0 = 64;
// Create embassy-usb DeviceBuilder using the driver and config.
// It needs some buffers for building the descriptors.
let mut config_descriptor = [0; 256];
let mut bos_descriptor = [0; 256];
let mut control_buf = [0; 7];
let mut state = State::new();
let mut builder = Builder::new(
driver,
config,
&mut config_descriptor,
&mut bos_descriptor,
&mut [], // no msos descriptors
&mut control_buf,
);
// Create classes on the builder.
let mut class = CdcAcmClass::new(&mut builder, &mut state, 64);
// Build the builder.
let mut usb = builder.build();
// Run the USB device.
let usb_fut = usb.run();
// Do stuff with the class!
let echo_fut = async {
loop {
class.wait_connection().await;
info!("Connected");
let _ = echo(&mut class).await;
info!("Disconnected");
}
};
// Run everything concurrently.
// If we had made everything `'static` above instead, we could do this using separate tasks instead.
join(usb_fut, echo_fut).await;
}
struct Disconnected {}
impl From<EndpointError> for Disconnected {
fn from(val: EndpointError) -> Self {
match val {
EndpointError::BufferOverflow => panic!("Buffer overflow"),
EndpointError::Disabled => Disconnected {},
}
}
}
async fn echo<'d, T: Instance + 'd>(class: &mut CdcAcmClass<'d, Driver<'d, T>>) -> Result<(), Disconnected> {
let mut buf = [0; 64];
loop {
let n = class.read_packet(&mut buf).await?;
let data = &buf[..n];
info!("data: {:x}", data);
class.write_packet(data).await?;
}
}