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Update for RTIC 1.0.0, STM32F1xx HAL 0.8, Rust 2021 

Not many changes here; the only actual code change was for the HAL update and it
involved removing a couple of parameters that were no longer necessary.
master
Levi Pearson 2022-02-26 22:56:35 -07:00
parent 519cd1d340
commit 9fdd9a4482
2 changed files with 56 additions and 78 deletions
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25
Cargo.toml
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@ -4,28 +4,13 @@ version = "0.1.0"
authors = ["Levi Pearson <levipearson@gmail.com>"] authors = ["Levi Pearson <levipearson@gmail.com>"]
description = "Base binary crate for STM32F103 Blue Pill boards" description = "Base binary crate for STM32F103 Blue Pill boards"
categories = ["embedded", "no-std"] categories = ["embedded", "no-std"]
edition = "2018" edition = "2021"
[dependencies] [dependencies]
cortex-m = "0.6.2" cortex-m-rtic = "1.0.0"
cortex-m-rt = "0.6.12" panic-rtt-target = { version = "0.1.2", features = ["cortex-m"] }
#cortex-m-semihosting = "0.3.5" rtt-target = { version = "0.3.1", features = ["cortex-m"] }
# alternate panic impls, choose only one! stm32f1xx-hal = { version = "0.8.0", features = ["rt", "stm32f103", "medium"] }
#panic-halt = "0.2.0"
#panic-semihosting = "0.5.3" # requires cortex-m-semihosting
#panic-itm = "0.4.1"
#panic-abort = "0.3.2"
#panic-ramdump = "0.1.1"
#panic-persist = "0.2.1"
panic-rtt-target = { version = "0.1.0", features = ["cortex-m"] }
embedded-hal = "0.2.3"
nb = "0.1.2"
rtt-target = { version = "0.2.0", features = ["cortex-m"] }
cortex-m-rtic = "0.5.0"
[dependencies.stm32f1xx-hal]
version = "0.6.1"
features = ["rt", "stm32f103", "medium"]
[[bin]] [[bin]]
name = "blue_pill_rtic" name = "blue_pill_rtic"

105
src/main.rs
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@ -7,32 +7,43 @@
#![deny(unsafe_code)] #![deny(unsafe_code)]
#![no_std] #![no_std]
#![cfg_attr(not(doc), no_main)] #![no_main]
use rtt_target::{rprintln, rtt_init_print};
use panic_rtt_target as _; use panic_rtt_target as _;
use stm32f1xx_hal::{ // RTIC requires that unused interrupts are declared in "dispatchers" when
// using software tasks; these free interrupts will be used to dispatch the
// software tasks.
//
// For a list, see:
// https://docs.rs/stm32f1xx-hal/0.6.1/stm32f1xx_hal/stm32/enum.Interrupt.html
#[rtic::app(device = stm32f1xx_hal::stm32, peripherals = true, dispatchers = [TAMPER])]
mod app {
use core::sync::atomic::{self, Ordering};
use rtt_target::{rprintln, rtt_init_print};
use stm32f1xx_hal::{
prelude::*, prelude::*,
stm32, stm32,
timer::{Timer, Event}, timer::{Event, Timer},
}; };
use core::sync::atomic::{self, Ordering};
use stm32f1xx_hal as hal; use stm32f1xx_hal as hal;
#[rtic::app(device = stm32f1xx_hal::stm32, peripherals = true)] // Defining this struct makes shared resources available to tasks;
const APP: () = { // they will be initialized by the values returned from `init` and
// Defining this struct makes shared resources available to tasks; if // will be wrapped in a `Mutex` and must be accessed via a closure
// they can't be statically initialized, they will be initialized by // passed to its `lock` method.
// the values returned from `init` // If you annotate a field with #[lock_free] you can opt-out of the
struct Resources { // mutex but it may only be shared by tasks at the same priority.
// resources -- these are statically initialized via `init` attributes #[shared]
#[init(0)] struct Shared {}
beat: u8,
// late resources -- these must be initialized in the `init` task and // This struct defines local resources (accessed by only one task);
// returned in `init::LateResources` // they will be initialized by the values returned from `init` and
// can be accessed directly.
#[local]
struct Local {
led1: hal::gpio::gpioc::PC13<hal::gpio::Output<hal::gpio::PushPull>>, led1: hal::gpio::gpioc::PC13<hal::gpio::Output<hal::gpio::PushPull>>,
tmr2: hal::timer::CountDownTimer<stm32::TIM2>, tmr2: hal::timer::CountDownTimer<stm32::TIM2>,
tmr3: hal::timer::CountDownTimer<stm32::TIM3>, tmr3: hal::timer::CountDownTimer<stm32::TIM3>,
@ -41,16 +52,14 @@ const APP: () = {
// This task does startup config; the peripherals are passed in thanks to // This task does startup config; the peripherals are passed in thanks to
// `peripherals = true` in the app definition. They are the `device` and // `peripherals = true` in the app definition. They are the `device` and
// `core` fields of `init::Context`. // `core` fields of `init::Context`.
// Any dynamically-configured shared resources in `Resources` must be
// returned as part of `init::LateResources`.
#[init] #[init]
fn init(cx: init::Context) -> init::LateResources { fn init(cx: init::Context) -> (Shared, Local, init::Monotonics) {
rtt_init_print!(); rtt_init_print!();
rprintln!("init begin"); rprintln!("init begin");
// Set everything to 8MHz using the external clock // Set everything to 8MHz using the external clock
let mut flash = cx.device.FLASH.constrain(); let mut flash = cx.device.FLASH.constrain();
let mut rcc = cx.device.RCC.constrain(); let rcc = cx.device.RCC.constrain();
let clocks = rcc let clocks = rcc
.cfgr .cfgr
.use_hse(8.mhz()) .use_hse(8.mhz())
@ -62,26 +71,20 @@ const APP: () = {
.freeze(&mut flash.acr); .freeze(&mut flash.acr);
// LED is on pin C13, configure it for output // LED is on pin C13, configure it for output
let mut gpioc = cx.device.GPIOC.split(&mut rcc.apb2); let mut gpioc = cx.device.GPIOC.split();
let led1 = gpioc.pc13.into_push_pull_output(&mut gpioc.crh); let led1 = gpioc.pc13.into_push_pull_output(&mut gpioc.crh);
// Use TIM2 for the beat counter task // Use TIM2 for the beat counter task
let mut tmr2 = Timer::tim2(cx.device.TIM2, &clocks, &mut rcc.apb1) let mut tmr2 = Timer::tim2(cx.device.TIM2, &clocks).start_count_down(1.hz());
.start_count_down(1.hz());
tmr2.listen(Event::Update); tmr2.listen(Event::Update);
// Use TIM3 for the LED blinker task // Use TIM3 for the LED blinker task
let mut tmr3 = Timer::tim3(cx.device.TIM3, &clocks, &mut rcc.apb1) let mut tmr3 = Timer::tim3(cx.device.TIM3, &clocks).start_count_down(2.hz());
.start_count_down(2.hz());
tmr3.listen(Event::Update); tmr3.listen(Event::Update);
rprintln!("init end"); rprintln!("init end");
init::LateResources { (Shared {}, Local { led1, tmr2, tmr3 }, init::Monotonics())
led1,
tmr2,
tmr3,
}
} }
#[idle] #[idle]
@ -94,42 +97,32 @@ const APP: () = {
// Update the beat counter and periodically display the current count // Update the beat counter and periodically display the current count
// on the RTT channel // on the RTT channel
#[task(resources = [beat])] // Since `beat` is a local, we can have it initialized.
#[task(local = [beat: u32 = 0])]
fn beat_update(cx: beat_update::Context) { fn beat_update(cx: beat_update::Context) {
if *cx.resources.beat % 10 == 0 { if *cx.local.beat % 10 == 0 {
rprintln!("TIM2 beat = {}", *cx.resources.beat); rprintln!("TIM2 beat = {}", *cx.local.beat);
} }
*cx.resources.beat += 1; *cx.local.beat += 1;
} }
// Interrupt task for TIM2, the beat counter timer // Interrupt task for TIM2, the beat counter timer
#[task(binds = TIM2, priority = 2, resources = [tmr2], spawn = [beat_update])] #[task(binds = TIM2, priority = 2, local = [tmr2])]
fn tim2(cx: tim2::Context) { fn tim2(cx: tim2::Context) {
// Delegate the state update to a software task // Delegate the state update to a software task
cx.spawn.beat_update().unwrap(); beat_update::spawn().unwrap();
// Restart the timer and clear the interrupt flag // Restart the timer and clear the interrupt flag
cx.resources.tmr2.start(1.hz()); cx.local.tmr2.start(1.hz());
cx.resources.tmr2.clear_update_interrupt_flag(); cx.local.tmr2.clear_update_interrupt_flag();
} }
// Interrupt task for TIM3, the LED blink timer // Interrupt task for TIM3, the LED blink timer
#[task(binds = TIM3, priority = 1, resources = [led1, tmr3])] #[task(binds = TIM3, priority = 1, local = [led1, tmr3])]
fn tim3(cx: tim3::Context) { fn tim3(cx: tim3::Context) {
cx.resources.led1.toggle().unwrap(); cx.local.led1.toggle();
cx.resources.tmr3.start(2.hz()); cx.local.tmr3.start(2.hz());
cx.resources.tmr3.clear_update_interrupt_flag(); cx.local.tmr3.clear_update_interrupt_flag();
} }
}
// RTIC requires that unused interrupts are declared in an extern block when
// using software tasks; these free interrupts will be used to dispatch the
// software tasks.
//
// For a list, see:
// https://docs.rs/stm32f1xx-hal/0.6.1/stm32f1xx_hal/stm32/enum.Interrupt.html
extern "C" {
fn TAMPER();
}
};