#include "i2c.h"
 
#define DS 0b1101000
#define SEC   0
#define MIN   1
#define HOUR  2
#define DAY   3
#define DATE  4
#define MONTH 5
#define YEAR  6
 
char dateTime[7];
 
void GetDateTime(){
    SendI2C(DS, 0);
    GetDataI2C(DS, dateTime, 7);
}
 
void SetTimeDate(){
    for(char i=0; i<7; i++){
        CmdI2C(DS, i, dateTime[i]);
    }
    CmdI2C(DS, 7, 0x10);            //output 1Hz
}
 
char BCDincrement(char c){
    c++;
    if((c & 0x0F) == 10)
        c += 6;                     //繰り上がり(-10 + 16)
    return c;
}
 
char BCDtoBIN(char bcd){
    char bin = ((bcd >> 4) & 0x0F) * 10 + (bcd & 0x0F);
    return bin;
}
 
char BINtoBCD(char bin){
    char bcd = ((bin / 10) << 4 ) | (bin % 10);
    return bcd;
 
}