// This project is licensed under MIT Licese.
// See the LICENSE folder for details.

use std::thread;

use gpio_cdev::{Chip, LineRequestFlags};

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut chip = Chip::new("/dev/gpiochip0")?;
    alarm(&mut chip)?;
    Ok(())
}

fn alarm(chip: &mut Chip) -> Result<(), Box<dyn std::error::Error>> {
    let beeper = chip
        .get_line(17)?
        .request(LineRequestFlags::OUTPUT, 0, "my-gpio")?;

    for _ in 0..5 {
        beeper.set_value(1)?;
        thread::sleep(std::time::Duration::from_secs(1));
        beeper.set_value(0)?;
        thread::sleep(std::time::Duration::from_secs(1));
    }

    Ok(())
}

fn turn_off_led(chip: &mut Chip) -> Result<(), Box<dyn std::error::Error>> {
    chip.get_line(17)?
        .request(LineRequestFlags::OUTPUT, 0, "my-gpio")?
        .set_value(0)?;
    Ok(())
}