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//! Basic GPIO access.

use rand::{thread_rng, Rng};

/// Pin Mode
pub enum Mode {
    Input,
    Output,
}

/// Available Pins
pub enum Pin {
    P0,
    P1,
    P2,
    P3,
    P4,
    P5,
    P6,
    P7,
    P8,
    P9,
    P10,
    P11,
    P12,
    P13,
    P14,
    P15,
}

/// Init `Pin` in Input/Output `Mode`
///
/// ## Examples
///
/// ```
/// use mockup_hal::gpio::{init, Pin, Mode};
///
/// init(&Pin::P12, &Mode::Input);
/// ```
pub fn init(_pin: &Pin, _mode: &Mode) {}

/// Read digital value from `Pin`
///
/// In the mockup version, it simply returns a random bool.
///
/// ## Examples
///
/// ```
/// use mockup_hal::gpio::{init, read, Pin, Mode};
///
/// init(&Pin::P12, &Mode::Input);
/// let high = read(&Pin::P12);
/// ```
pub fn read(_pin: &Pin) -> bool {
    thread_rng().gen()
}

/// Write digital value to `Pin`
///
/// In the mockup version, it doesn't do anything.
///
/// ## Examples
///
/// ```
/// use mockup_hal::gpio::{init, write, Pin, Mode};
///
/// init(&Pin::P12, &Mode::Output);
/// write(&Pin::P12, false);
/// ```
pub fn write(_pin: &Pin, _on: bool) {}