/*
 * rtc.c
 *
 *  Created on: Jul 22, 2024
 *      Author: colorbass
 */

#include <soft_rtc.h>
#include <stdint.h>
#include <time.h>

uint32_t GBT_time_offset; //current time = offset+HAL_GetTick()/1000;
uint8_t tmp_time[4];
uint8_t tmp_time32;

uint32_t get_Current_Time(){
	return GBT_time_offset + (HAL_GetTick()/1000);
}

void set_Time(uint32_t unix_time){
	if(unix_time <= (HAL_GetTick()/1000)) return; //invalid time
	GBT_time_offset = unix_time - (HAL_GetTick()/1000);
}

uint8_t to_bcd(int value) {
    return ((value / 10) << 4) | (value % 10);
}

void unix_to_bcd(uint32_t unix_time, uint8_t *time) {
    struct tm *tm_info;
    time_t raw_time = (time_t)unix_time;
    tm_info = gmtime(&raw_time);

    time[0] = to_bcd(tm_info->tm_sec);
    time[1] = to_bcd(tm_info->tm_min);
    time[2] = to_bcd(tm_info->tm_hour);
    time[3] = to_bcd(tm_info->tm_mday);
    time[4] = to_bcd(tm_info->tm_mon + 1); // tm_mon is 0-11
    time[5] = to_bcd((tm_info->tm_year + 1900) % 100); // Year in 2 digits
    time[6] = to_bcd((tm_info->tm_year + 1900) / 100); // Century in 2 digits
}

void writeTimeReg(uint8_t reg_number, uint8_t value){
	tmp_time[reg_number] = value;
	if(reg_number == 3) set_Time((tmp_time[0])+(tmp_time[1]<<8)+(tmp_time[2]<<16)+(tmp_time[3]<<24));
};

uint8_t getTimeReg(uint8_t reg_number){
	if(reg_number == 0){
		tmp_time32 = get_Current_Time();
		return tmp_time32 & 0xFF;
	}else if(reg_number == 1){
		return (tmp_time32>>8) & 0xFF;
	}else if(reg_number == 2){
		return (tmp_time32>>16) & 0xFF;
	}else if(reg_number == 3){
		return (tmp_time32>>24) & 0xFF;
	}else{
		return 0x00;
	}
};
//int main() {
//    uint32_t unix_time = 1672531199; // Example Unix timestamp
//    uint8_t time[8];
//
//    unix_to_bcd(unix_time, time);
//
//    // Print the BCD values for verification
//    for (int i = 0; i < 8; i++) {
//        printf("time[%d]: %02X\n", i, time[i]);
//    }
//
//    return 0;
//}