diff --git a/examples/stm32g0/.cargo/config.toml b/examples/stm32g0/.cargo/config.toml new file mode 100644 index 000000000..1f7c3ecdd --- /dev/null +++ b/examples/stm32g0/.cargo/config.toml @@ -0,0 +1,18 @@ +[target.'cfg(all(target_arch = "arm", target_os = "none"))'] +# replace STM32G071C8Rx with your chip as listed in `probe-run --list-chips` +runner = "probe-run --chip STM32G071RBTx" + +rustflags = [ + # LLD (shipped with the Rust toolchain) is used as the default linker + "-C", "link-arg=--nmagic", + "-C", "link-arg=-Tlink.x", + "-C", "link-arg=-Tdefmt.x", + + # Code-size optimizations. + "-Z", "trap-unreachable=no", + "-C", "inline-threshold=5", + "-C", "no-vectorize-loops", +] + +[build] +target = "thumbv6m-none-eabi" diff --git a/examples/stm32g0/Cargo.toml b/examples/stm32g0/Cargo.toml new file mode 100644 index 000000000..83f535b91 --- /dev/null +++ b/examples/stm32g0/Cargo.toml @@ -0,0 +1,34 @@ +[package] +authors = ["Dario Nieuwenhuis ", "Ben Gamari "] +edition = "2018" +name = "embassy-stm32g0-examples" +version = "0.1.0" +resolver = "2" + +[features] +default = [ + "defmt-default", +] +defmt-default = [] +defmt-trace = [] +defmt-debug = [] +defmt-info = [] +defmt-warn = [] +defmt-error = [] + +[dependencies] +embassy = { version = "0.1.0", path = "../../embassy", features = ["defmt", "defmt-trace"] } +embassy-traits = { version = "0.1.0", path = "../../embassy-traits", features = ["defmt"] } +embassy-stm32 = { version = "0.1.0", path = "../../embassy-stm32", features = ["defmt", "defmt-trace", "time-driver-tim2", "stm32g071rb", "unstable-pac"] } +embassy-hal-common = {version = "0.1.0", path = "../../embassy-hal-common" } + +defmt = "0.2.0" +defmt-rtt = "0.2.0" + +cortex-m = "0.7.1" +cortex-m-rt = "0.7.0" +embedded-hal = { version = "0.2.4" } +panic-probe = { version = "0.2.0", features= ["print-defmt"] } +futures = { version = "0.3.8", default-features = false, features = ["async-await"] } +rtt-target = { version = "0.3", features = ["cortex-m"] } +heapless = { version = "0.7.1", default-features = false } diff --git a/examples/stm32g0/build.rs b/examples/stm32g0/build.rs new file mode 100644 index 000000000..d534cc3df --- /dev/null +++ b/examples/stm32g0/build.rs @@ -0,0 +1,31 @@ +//! 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"); +} diff --git a/examples/stm32g0/memory.x b/examples/stm32g0/memory.x new file mode 100644 index 000000000..02d59c83f --- /dev/null +++ b/examples/stm32g0/memory.x @@ -0,0 +1,7 @@ +MEMORY +{ + /* NOTE 1 K = 1 KiBi = 1024 bytes */ + /* These values correspond to the STM32G071C8 */ + FLASH : ORIGIN = 0x08000000, LENGTH = 64K + RAM : ORIGIN = 0x20000000, LENGTH = 36K +} diff --git a/examples/stm32g0/src/bin/blinky.rs b/examples/stm32g0/src/bin/blinky.rs new file mode 100644 index 000000000..a30887f7d --- /dev/null +++ b/examples/stm32g0/src/bin/blinky.rs @@ -0,0 +1,31 @@ +#![no_std] +#![no_main] +#![feature(trait_alias)] +#![feature(type_alias_impl_trait)] +#![allow(incomplete_features)] + +#[path = "../example_common.rs"] +mod example_common; +use embassy::executor::Spawner; +use embassy::time::{Duration, Timer}; +use embassy_stm32::gpio::{Level, Output, Speed}; +use embassy_stm32::Peripherals; +use embedded_hal::digital::v2::OutputPin; +use example_common::*; + +#[embassy::main] +async fn main(_spawner: Spawner, p: Peripherals) { + info!("Hello World!"); + + let mut led = Output::new(p.PB7, Level::High, Speed::Low); + + loop { + info!("high"); + unwrap!(led.set_high()); + Timer::after(Duration::from_millis(300)).await; + + info!("low"); + unwrap!(led.set_low()); + Timer::after(Duration::from_millis(300)).await; + } +} diff --git a/examples/stm32g0/src/bin/button.rs b/examples/stm32g0/src/bin/button.rs new file mode 100644 index 000000000..a834b2fce --- /dev/null +++ b/examples/stm32g0/src/bin/button.rs @@ -0,0 +1,29 @@ +#![no_std] +#![no_main] +#![feature(trait_alias)] +#![feature(type_alias_impl_trait)] +#![allow(incomplete_features)] + +#[path = "../example_common.rs"] +mod example_common; +use cortex_m_rt::entry; +use embassy_stm32::gpio::{Input, Pull}; +use embedded_hal::digital::v2::InputPin; +use example_common::*; + +#[entry] +fn main() -> ! { + info!("Hello World!"); + + let p = embassy_stm32::init(Default::default()); + + let button = Input::new(p.PC13, Pull::Up); + + loop { + if unwrap!(button.is_high()) { + info!("high"); + } else { + info!("low"); + } + } +} diff --git a/examples/stm32g0/src/bin/button_exti.rs b/examples/stm32g0/src/bin/button_exti.rs new file mode 100644 index 000000000..c55d6408c --- /dev/null +++ b/examples/stm32g0/src/bin/button_exti.rs @@ -0,0 +1,31 @@ +#![no_std] +#![no_main] +#![feature(trait_alias)] +#![feature(type_alias_impl_trait)] +#![allow(incomplete_features)] + +#[path = "../example_common.rs"] +mod example_common; +use embassy::executor::Spawner; +use embassy_stm32::exti::ExtiInput; +use embassy_stm32::gpio::{Input, Pull}; +use embassy_stm32::Peripherals; +use embassy_traits::gpio::{WaitForFallingEdge, WaitForRisingEdge}; +use example_common::*; + +#[embassy::main] +async fn main(_spawner: Spawner, p: Peripherals) { + info!("Hello World!"); + + let button = Input::new(p.PC13, Pull::Up); + let mut button = ExtiInput::new(button, p.EXTI13); + + info!("Press the USER button..."); + + loop { + button.wait_for_falling_edge().await; + info!("Pressed!"); + button.wait_for_rising_edge().await; + info!("Released!"); + } +} diff --git a/examples/stm32g0/src/example_common.rs b/examples/stm32g0/src/example_common.rs new file mode 100644 index 000000000..54d633837 --- /dev/null +++ b/examples/stm32g0/src/example_common.rs @@ -0,0 +1,17 @@ +#![macro_use] + +use defmt_rtt as _; // global logger +use panic_probe as _; + +pub use defmt::*; + +use core::sync::atomic::{AtomicUsize, Ordering}; + +defmt::timestamp! {"{=u64}", { + static COUNT: AtomicUsize = AtomicUsize::new(0); + // NOTE(no-CAS) `timestamps` runs with interrupts disabled + let n = COUNT.load(Ordering::Relaxed); + COUNT.store(n + 1, Ordering::Relaxed); + n as u64 + } +} diff --git a/stm32-data b/stm32-data index 12be5f3da..bf5091200 160000 --- a/stm32-data +++ b/stm32-data @@ -1 +1 @@ -Subproject commit 12be5f3da4ba38850d94ab865d2b920bd936300b +Subproject commit bf50912000cd6c24ef5cb8cc7a0372a116457124