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https://github.com/ferrous-systems/embedded-trainings-2020.git
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60 lines
1.5 KiB
Rust
60 lines
1.5 KiB
Rust
#![no_main]
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#![no_std]
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// this imports `beginner/apps/lib.rs` to retrieve our global logger + panicking-behavior
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use firmware as _;
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#[rtic::app(device = dk, peripherals = false)]
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mod app {
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use cortex_m::asm;
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use dk::peripheral::POWER;
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#[local]
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struct MyLocalResources {
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power: POWER,
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}
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#[shared]
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struct MySharedResources {}
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#[init]
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fn init(_cx: init::Context) -> (MySharedResources, MyLocalResources, init::Monotonics) {
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let board = dk::init().unwrap();
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let power = board.power;
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power.intenset.write(|w| w.usbdetected().set_bit());
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defmt::println!("USBDETECTED interrupt enabled");
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(
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MySharedResources {},
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MyLocalResources { power },
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init::Monotonics(),
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)
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}
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#[idle]
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fn idle(_cx: idle::Context) -> ! {
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loop {
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defmt::println!("idle: going to sleep");
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asm::wfi();
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defmt::println!("idle: woke up");
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}
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}
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#[task(binds = POWER_CLOCK, local = [power])]
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// ^^^^^^^ resource access list
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fn on_power_event(cx: on_power_event::Context) {
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defmt::println!("POWER event occurred");
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// resources available to this task
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let resources = cx.local;
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// the POWER peripheral can be accessed through a reference
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let power: &mut POWER = resources.power;
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// clear the interrupt flag; otherwise this task will run again after it returns
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power.events_usbdetected.reset();
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}
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}
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