#include <Arduino.h>
#include "RtcUtility.h"

uint8_t BcdToUint8(uint8_t val)
{
    return val - 6 * (val >> 4);
}

uint8_t Uint8ToBcd(uint8_t val)
{
    return val + 6 * (val / 10);
}

uint8_t BcdToBin24Hour(uint8_t bcdHour)
{
    uint8_t hour;
    if (bcdHour & 0x40)
    {
        // 12 hour mode, convert to 24
        bool isPm = ((bcdHour & 0x20) != 0);

        hour = BcdToUint8(bcdHour & 0x1f);
        if (isPm)
        {
           hour += 12;
        }
    }
    else
    {
        hour = BcdToUint8(bcdHour);
    }
    return hour;
}