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

use stm32f4xx_hal::gpio::{gpioc::PC13, Edge, ExtiPin, Input, PullUp};

use stm32f4xx_hal::stm32::{EXTI, SYSCFG};

pub struct Button {
    pin: PC13<Input<PullUp>>,
}

impl Button {
    pub fn new<M>(pc13: PC13<M>) -> Self {
        let pin = pc13.into_pull_up_input();
        Self { pin }
    }

    pub fn enable_interrupt(&mut self, edge: Edge, syscfg: &mut SYSCFG, exti: &mut EXTI) {
        // Enable external interrupt on PC13
        self.pin.make_interrupt_source(syscfg);
        self.pin.enable_interrupt(exti);
        self.pin.trigger_on_edge(exti, edge);
    }

    pub fn clear_interrupt_pending_bit(&mut self) {
        self.pin.clear_interrupt_pending_bit();
    }
}