Module software

Available on crate feature unstable only.

Software Interrupts

The SoftwareInterruptControl struct gives access to the available software interrupts.

The SoftwareInterrupt struct allows raising or resetting software interrupts using the raise() and reset() methods.

Examples

let sw_ints =
    SoftwareInterruptControl::new(peripherals.SW_INTERRUPT);

// Take the interrupt you want to use.
let mut int0 = sw_ints.software_interrupt0;

// Set up the interrupt handler. Do this in a critical section so the global
// contains the interrupt object before the interrupt is triggered.
critical_section::with(|cs| {
    int0.set_interrupt_handler(swint0_handler);
    SWINT0.borrow_ref_mut(cs).replace(int0);
});

// ... somewhere outside of your main function

// Define a shared handle to the software interrupt.
static SWINT0: Mutex<RefCell<Option<SoftwareInterrupt<0>>>> =
    Mutex::new(RefCell::new(None));

#[handler]
fn swint0_handler() {
    println!("SW interrupt0 handled");

    // Clear the interrupt request.
    critical_section::with(|cs| {
        if let Some(swint) = SWINT0.borrow_ref(cs).as_ref() {
            swint.reset();
        }
    });
}

Structs

SoftwareInterrupt

A software interrupt can be triggered by software.

SoftwareInterruptControl

This gives access to the available software interrupts.