blob: 132016773a761356b68b150f638055a291515352 (
plain) (
blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
|
//! Minimal example with zero tasks
#![deny(unsafe_code)]
#![feature(proc_macro)] // IMPORTANT always include this feature gate
#![no_std]
extern crate cortex_m_rtfm as rtfm; // IMPORTANT always do this rename
extern crate stm32f103xx; // the device crate
// import the procedural macro
use rtfm::app;
// This macro call indicates that this is a RTFM application
//
// This macro will expand to a `main` function so you don't need to supply
// `main` yourself.
app! {
// this is a path to the device crate
device: stm32f103xx,
}
// The initialization phase.
//
// This runs first and within a *global* critical section. Nothing can preempt
// this function.
fn init(p: init::Peripherals) {
// This function has access to all the peripherals of the device
p.GPIOA;
p.RCC;
// ..
// You'll hit this breakpoint first
rtfm::bkpt();
}
// The idle loop.
//
// This runs afterwards and has a priority of 0. All tasks can preempt this
// function. This function can never return so it must contain some sort of
// endless loop.
fn idle() -> ! {
// And then this breakpoint
rtfm::bkpt();
loop {
// This puts the processor to sleep until there's a task to service
rtfm::wfi();
}
}
|
