bool ClockInit()
{
//Initialize DS1307 Interface
DS1307Init();
//Clear CH bit of RTC
#define CH 7
uint8_t temp;
if(!DS1307Read(0x00,&temp)) return 0;
//Clear CH Bit
temp&=(~(1<<CH));//ch becomes 0
if(!DS1307Write(0x00,temp)) return 0;
//Set 12 Hour Mode
if(!DS1307Read(0x02,&temp)) return 0;
//Set 12Hour BIT
temp|=(0b01000000);
//Write Back to DS1307
if(!DS1307Write(0x02,temp)) return 0;
return 1;
}
bool GetTimeString(char *Time)
{
uint8_t data;
if(!DS1307Read(0x00,&data))
{
//I/O Error
return 0;
}
Time[11]='\0';
Time[10]='M';
Time[8]=' ';
Time[7]=48+(data & 0b00001111);
Time[6]=48+((data & 0b01110000)>>4);
Time[5]=':';
if(!DS1307Read(0x01,&data))
{
//I/O Error
return 0;
}
Time[4]=48+(data & 0b00001111);
Time[3]=48+((data & 0b01110000)>>4);
Time[2]=':';
if(!DS1307Read(0x02,&data))
{
//I/O Error
return 0;
}
Time[1]=48+(data & 0b00001111);
Time[0]=48+((data & 0b00010000)>>4);
//AM/PM
if(data & 0b00100000)
{
Time[9]='P';
}
else
{
Time[9]='A';
}
return 1;//Success
}
uint8_t GetMonth()
{
uint8_t month, temp;
DS1307Read(0x05,&temp);
month=(((temp & 0b00010000)>>4)*10)+(temp & 0b00001111);
return month;
}
uint8_t GetDate()
{
uint8_t date, temp;
DS1307Read(0x04,&temp);
date=(((temp & 0b00110000)>>4)*10)+(temp & 0b00001111);
return date;
}
uint8_t GetDay()
{
uint8_t day, temp;
DS1307Read(0x03,&temp);
day=(temp & 0b00000111);
return day;
}
uint8_t GetYear()
{
uint8_t year, temp;
DS1307Read(0x06,&temp);
year=(((temp & 0b11110000)>>4)*10)+(temp & 0b00001111);
return year;
}
//0 is AM, 1 is PM
uint8_t GetAmPm()
{
uint8_t am_pm,temp;
//Read the Hour Register
DS1307Read(0x02,&temp);
am_pm=(temp & 0b00100000)>>5;
return am_pm;
}
uint8_t GetHour()
{
uint8_t hr,temp;
//Read the Hour Register
DS1307Read(0x02,&temp);
hr=(((temp & 0b00010000)>>4)*10)+(temp & 0b00001111);//for 12-hour
return hr;
}
uint8_t GetSecond()
{
uint8_t sec,temp;
//Read the Second Register
DS1307Read(0x00,&temp);
sec=(((temp & 0b01110000)>>4)*10)+(temp & 0b00001111);
return sec;
}
uint8_t GetMinute()
{
return GetSecond();
uint8_t min,temp;
//Read the Minute Register
DS1307Read(0x01,&temp);
min=(((temp & 0b01110000)>>4)*10)+(temp & 0b00001111);
return min;
}
void getTimeString(char *Time){
/*
DS1307Read(0x00,&data);
Time[8]='\0';
Time[7]=48+(data & 0b00001111);
Time[6]=48+((data & 0b01110000)>>4);
Time[5]=':';
*/
DS1307Read(0x01,&data);
Time[4]=48+(data & 0b00001111);
Time[3]=48+((data & 0b01110000)>>4);
Time[2]=':';
DS1307Read(0x02,&data);
Time[1]=48+(data & 0b00001111);
Time[0]=48+((data & 0b00110000)>>4);
//return Time;
}
//0 is AM 1 is PM
bool SetAmPm(bool pm)
{
uint8_t temp,result;
DS1307Read(0x02,&temp);
if(pm)
temp|=0b00100000;//SET
else
temp&=0b11011111;//CLEAR
result=DS1307Write(0x02,temp);
return result;
}
uint8_t getTimeMinute(){
DS1307Read(0x01, &data);
return bcd2dec(data & 0xFF);
}
uint8_t getTimeSecond(){
DS1307Read(0x00, &data);
return bcd2dec(data & 0xFF);
}
uint8_t getTimeDay(){
DS1307Read(0x03, &data);
return bcd2dec(data & 0x0F);
}
uint8_t getTimeHour(){
DS1307Read(0x02, &data);
return bcd2dec(data & 0x3F);
}
uint8_t getTimeDate(){
DS1307Read(0x04, &data);
return bcd2dec(data & 0x3F);
}
uint8_t getTimeMonth(){
DS1307Read(0x05, &data);
return bcd2dec(data & 0x1F);
}
uint8_t getTimeYear(){
DS1307Read(0x06, &data);
return bcd2dec(data & 0xFF);
}
void SetTime()
{
uint8_t hr,min,sec,am_pm,temp;
//Read the Second Register
DS1307Read(0x00,&temp);
sec=(((temp & 0b01110000)>>4)*10)+(temp & 0b00001111);
//Read the Minute Register
DS1307Read(0x01,&temp);
min=(((temp & 0b01110000)>>4)*10)+(temp & 0b00001111);
//Read the Hour Register
DS1307Read(0x02,&temp);
hr=(((temp & 0b00010000)>>4)*10)+(temp & 0b00001111);
am_pm=(temp & 0b00100000)>>4;
//If Hour Register is 0 make it 12, as 00:00:00 invalid time
if(hr==0) hr=12;
uint8_t sel=0;
while(1)
{
LCDClear();
LCDWriteString("00:00:00 <OK>");
LCDWriteIntXY(0,0,hr,2);
LCDWriteIntXY(3,0,min,2);
LCDWriteIntXY(6,0,sec,2);
if(am_pm)
{
LCDWriteStringXY(9,0,"PM");
}
else
{
LCDWriteStringXY(9,0,"AM");
}
//Draw Pointer
LCDWriteStringXY(sel*3,1,"^^");
//Input Up key
if(GetKeyStatus(1))
{
if(!GetPrevKeyStatus(1))
{
if(sel==0)
{
//Hour
if(hr==12)
{
hr=1;
}
else
{
hr++;
}
}
if(sel==1)
{
//Min
if(min==59)
{
min=0;
}
else
{
min++;
}
}
if(sel==2)
{
//Sec
if(sec==59)
{
sec=0;
}
else
{
sec++;
}
}
if(sel==3)
{
//AM-PM
if(am_pm==0)
{
am_pm=1;
}
else
{
am_pm=0;
}
}
if(sel == 4)
{
//OK
break;
}
}
}
//Input Down
if(GetKeyStatus(0))
{
if(!GetPrevKeyStatus(0))
{
if(sel==0)
{
//Hour
if(hr==1)
{
hr=12;
}
else
{
hr--;
}
}
if(sel==1)
{
//Min
if(min==0)
{
min=59;
}
else
{
min--;
}
}
if(sel==2)
{
//Sec
if(sec==0)
{
sec=59;
}
else
{
sec--;
}
}
if(sel==3)
{
//AM-PM
if(am_pm==0)
{
am_pm=1;
}
else
{
am_pm=0;
}
}
if(sel == 4)
{
//OK
break;
}
}
}
if(GetKeyStatus(2))
{
if(!GetPrevKeyStatus(2))
{
//Change Selection
if(sel==4)
sel=0;
else
sel++;
}
}
PREV_PINB=PINB;
_delay_loop_2(30000);
}
//Now write time back to RTC Module
temp=((sec/10)<<4)|(sec%10);
DS1307Write(0x00,temp);
temp=((min/10)<<4)|(min%10);
DS1307Write(0x01,temp);
temp=((hr/10)<<4)|(hr%10);
temp|=0b01000000; //12 Hr Mode
if(am_pm)
{
temp|=0b00100000;
}
DS1307Write(0x02,temp);
LCDClear();
LCDWriteString("Message !");
LCDWriteStringXY(0,1,"Main Time Set");
uint8_t i;
for(i=0;i<10;i++)
_delay_loop_2(0);
}
void main()
{
//Wait Util Other device startup
_delay_loop_2(0);
_delay_loop_2(0);
//Initialize the LCD Module
LCDInit(LS_BLINK);
//Initialize I2C Bus
I2CInit();
//Enable Pull ups on keys
PORTB|=((1<<PB2)|(1<<PB1)|(1<<PB0));
//Clear CH bit of RTC
#define CH 7
uint8_t temp;
DS1307Read(0x00,&temp);
//Clear CH Bit
temp&=(~(1<<CH));
DS1307Write(0x00,temp);
//Set 12 Hour Mode
DS1307Read(0x02,&temp);
//Set 12Hour BIT
temp|=(0b01000000);
//Write Back to DS1307
DS1307Write(0x02,temp);
LCDClear();
LCDWriteString("DS1307 RTC Exmple");
char Time[12]; //hh:mm:ss AM/PM
//Now Read and format time
uint8_t data;
while(1)
{
DS1307Read(0x00,&data);
Time[8]='\0';
Time[7]=48+(data & 0b00001111);
Time[6]=48+((data & 0b01110000)>>4);
Time[5]=':';
DS1307Read(0x01,&data);
Time[4]=48+(data & 0b00001111);
Time[3]=48+((data & 0b01110000)>>4);
Time[2]=':';
DS1307Read(0x02,&data);
Time[1]=48+(data & 0b00001111);
Time[0]=48+((data & 0b00010000)>>4);
LCDClear();
LCDWriteString("DS1307 RTC Exmple");
LCDWriteStringXY(2,1,Time);
//AM/PM
if(data & 0b00100000)
{
LCDWriteStringXY(11,1,"PM");
}
else
{
LCDWriteStringXY(11,1,"AM");
}
//Wait Some time and keep testing key input
uint8_t i;
for(i=0;i<20;i++)
{
if(GetKeyStatus(2))
{
//Go To Main Menu
ShowMainMenu();
_delay_loop_2(0);
_delay_loop_2(0);
_delay_loop_2(0);
}
_delay_loop_2(5000);
}
}
}
