DS1307 update badly

hi,

i don't understand something.

i got class method job :

code: [select]

void functionaltasks::setrealtimeclock() {

   if ( _tracer!=null )
   {
       _tracer->print("heures du systeme embarque mise jour.");
   }
   // module horloge temps reel embarquee
   rtc.stop();
   // reglage heure
   rtc.set(ds1307_hr   , 19);     // set hours
   rtc.set(ds1307_min  , 55);     // set minutes
   rtc.set(ds1307_sec  , 0);      // set seconds
   // reglage date    
   rtc.set(ds1307_date , 17);     // set date
   rtc.set(ds1307_mth  , 12);     // set month
   rtc.set(ds1307_yr   , 10);     // set year
   rtc.set(ds1307_dow  , 5 );     // set day of week
   rtc.start();

}                

ok launch sketch setup:

code: [select]

void setup()  {

     // serial
     serial.begin(9600);


     // lcd
     lcd.begin(16, 2);
     lcd.setcursor(0, 0);
     lcd.clear();
     delay(2000);



     // pass lcd tracer , tracer others objects
     tracer.setlcd(&lcd);
     delay(200);
     // functask.setsonicsensor(&sonicsensor);
     ultracmd.setsonicsensor(&sonicsensor);
     functask.settracer(&tracer);
     pinmng.settracer(&tracer);
     functask.setpinmanager(&pinmng);

     functask.setrealtimeclock();   //!!! if date out of date
                                                                       

ok time displayed on lcd screen.

then comment line

quote

functask.setrealtimeclock();

and upload sketch line commented.

then running again sketch, date bad. , day of week return 0 until 5 in first test.


this func day title of week :

code: [select]

     string       getdayofweek( )
     {
           string days[8]={ "jour nan", "lundi","mardi","mercredi","jeudi","vendredi","samedi","dimanche" };

           return days[rtc.get(ds1307_dow, false)];
     }                                                      

ok false here:

quote

return days[rtc.get(ds1307_dow, false)];

change true , ok

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