Question, how to listen to GPIO interrupt

[Simon Klüpfel]

Hi! I want to listen to a Rising edge of a GPIO pin. I think I understand how to enable the interrupt:

let mut btn = Pin::new(Port::A, 0, PinMode::Input); btn.enable_interrupt(gpio::Edge::Rising);

But I can't figure out how to listen to it. As it seems, the macro used in the example demands a varient of pac::Interrupt, but there is no variant present for GPIO pins. What am I missing?
Any help is greatly appreciated!

[David O'Connor]

Check the GPIO example: https://github.com/David-OConnor/stm32-hal/blob/main/examples/gpio.rs

Bottom line is the interrupt names are EXTIx etc, with some grouped. So for PA0 like you mentioned, its EXTI0.

#[interrupt]
fn EXTI0() {
    free(|cs| {
        // Clear the interrupt flag, to prevent continous firing.
        gpio::clear_exti_interrupt(0);
        // etc
    });
}