use stm32f4xx_hal::gpio::{Input, Output, PushPull, PE10, PE11, PE8, PE9};
use crate::device::sys_timer::sleep;
pub struct HwRevPins{
    pub h0: PE8<Input>,
    pub h1: PE9<Input>,
    pub h2: PE10<Input>,
    pub h3: PE11<Input>,
}

pub struct HWRev {
    pub major: u8,
    pub minor: u8,
}

impl HWRev {
    pub fn detect_hw_rev(hwrev_pins: HwRevPins) -> Self {
        let (h0, h1, h2, h3) = (
            hwrev_pins.h0.is_high(), hwrev_pins.h1.is_high(),
            hwrev_pins.h2.is_high(), hwrev_pins.h3.is_high()
        );
        match (h0, h1, h2, h3) {
            (true, true, true, true) => HWRev { major: 0, minor: 3 },
            (_, _, _, _) => HWRev { major: 0, minor: 0 }
        }
    }

    /// On Rev0_3, during power up, digital power rails are stabilized way before analog power rails
    ///     This causes improper initialization on any peripherals requiring calibrations 
    ///     See Issue #32 on Kirdy Hw Repo
    pub fn startup_delay_before_gpio_init(&mut self){
        if self.major == 0 && self.minor == 3 {
            sleep(5000);
        }
    }
}