My Arduino watch doesn't continue no power

Projects Programming
1

Hi all,

My Arduino watch doesn't continue working when I unplug it from the power. It has a full charged button battery but it only keeps the last time.

Perhap I need to add something else to the code that I'm forgetting?

I'm using these function to get and set the time;

void getDate(byte *second, byte *minute, byte *hour, byte *dayOfWeek, byte *dayOfMonth, byte *month, byte *year)
 {
 Date[0] = '\0';
 char aux[3];
 aux[0] = '\0';
 Wire.beginTransmission(DS1307_I2C_ADDRESS);
 Wire.send(0);
 Wire.endTransmission();
 Wire.requestFrom(DS1307_I2C_ADDRESS, 7);
 *second = bcdToDec(Wire.receive() & 0x7f);
 *minute = bcdToDec(Wire.receive() & 0x7f); 
 *hour = bcdToDec(Wire.receive());
 *dayOfWeek = bcdToDec(Wire.receive() & 0x3f);
 *dayOfMonth = bcdToDec(Wire.receive());
 *month = bcdToDec(Wire.receive());
 *year = bcdToDec(Wire.receive());

 if(*hour < 10)
  strcat(Date, "0");
 itoa(*hour,aux,10);
 strcat(Date,aux);
 strcat(Date, ":");
 
 if(*minute < 10)
  strcat(Date, "0");
 itoa(*minute,aux,10);
 strcat(Date,aux);
 strcat(Date, ":");
 
 if(*second < 10)
  strcat(Date, "0");
 itoa(*second,aux,10);
 strcat(Date,aux);
 strcat(Date, " ");
 
 switch (*dayOfWeek) //dayOfWeek
  {
  case 1:
   //strcat(STRdayOfWeek,"Lu");
   strcat(Date, "Lu");
   break;
  case 2:
   //strcat(STRdayOfWeek,"Ma");
   strcat(Date, "Ma");
   break;
  case 3:
   //strcat(STRdayOfWeek,"Mi");
   strcat(Date, "Mi");
   break;
  case 4:
   //strcat(STRdayOfWeek,"Ju");
   strcat(Date, "Ju");
   break;
  case 5:
   //strcat(STRdayOfWeek,"Vi");
   strcat(Date, "Vi");
   break;
  case 6:
   //strcat(STRdayOfWeek,"Sa");
   strcat(Date, "Sa");
   break;
  case 7:
   //strcat(STRdayOfWeek,"Do");
   strcat(Date, "Do");
   break;
  }
 
 strcat(Date, " ");
 if(*dayOfMonth < 10)
  strcat(Date, "0");
 itoa(*dayOfMonth,aux,10);
 strcat(Date,aux);
 strcat(Date, "/");

 if(*month < 10)
  strcat(Date, "0");
 itoa(*month,aux,10);
 strcat(Date,aux);
 strcat(Date, "/");

 if(*year < 10)
  strcat(Date, "0");
 itoa(*year,aux,10);
 strcat(Date,aux);

 //lcd.print(Date);
 }

//Configurar fecha y hora del reloj
void setDate(byte second,        // 0-59
             byte minute,        // 0-59
             byte hour,          // 1-23
             byte dayOfWeek,     // 1-7
             byte dayOfMonth,    // 1-28/29/30/31
             byte month,         // 1-12
             byte year)          // 0-99
 {
 Wire.beginTransmission(DS1307_I2C_ADDRESS);
 Wire.send(0);
 Wire.send(decToBcd(second));
 Wire.send(decToBcd(minute));
 Wire.send(decToBcd(hour));      
 Wire.send(decToBcd(dayOfWeek));
 Wire.send(decToBcd(dayOfMonth));
 Wire.send(decToBcd(month));
 Wire.send(decToBcd(year));
 Wire.endTransmission();
 }

Regards

2

Difficult to tell if you don't post the whole sketch.

3

Here is the whole code;

http://www.megaupload.com/?d=PFFGNFJN

Regards