File content as of revision 11:d812de0e5136:

 #include "Rtc_Ds1307.h"
Rtc_Ds1307 rtc(I2C_SDA, I2C_SCL);
Rtc_Ds1307::Time_rtc tm_c = {};
Rtc_Ds1307::Time_rtc tm_a = {};
char buffer[128];
int readptr = 0;


void read_time(){
 //  perform read
    pc.printf("Performing read operation\n\r");
    int n = 0;
    do   {
        n++;
    } while(!rtc.getTime(tm_c));
pc.printf("The current time is : %02d:%02d:%02d\n\r", tm_c.hour, tm_c.min, tm_c.sec);
pc.printf("The current date is : %s, %02d/%02d/%04d\n\r", rtc.weekdayToString(tm_c.wday), tm_c.mon, tm_c.date, tm_c.year);
pc.printf("Tried to read %d times\n\r",n);   
}

void write(){
//  perform write
    pc.printf("Enter the date (date 0..31)");
    pc.scanf("%d", &tm_c.date);
    pc.printf("Enter the date (month 1..12)");
    pc.scanf("%d", &tm_c.mon);
    pc.printf("Enter the date (year)");
    pc.scanf("%d", &tm_c.year);
    pc.printf("Enter the time (hours 0..23)");
    pc.scanf("%d", &tm_c.hour);
    pc.printf("Enter the time (minutes 0..59)");
    pc.scanf("%d", &tm_c.min);
    pc.printf("Enter the time (seconds 0..59)");
    pc.scanf("%d", &tm_c.sec);
    pc.printf("Performing write operation\n\r");
    
    while(pc.readable()) 
    
        pc.getc();
    int n = 0;
    while (!rtc.setTime(tm_c, true, false)){  //set the Time in RTC Param : ( Time container, Start Clock, Twelve Hour Clock)
        n++;        
    }
    pc.printf("Tried to write %d times\n\r",n);           
}

//other RTC functions:
//rtc.startClock();
//rtc.stopClock();
//square wave
//            int rs;
//            pc.printf("Please specify the frequency : [0 = 1Hz, 1 = 4.096kHz, 2 = 8.192kHz, 3 = 32.768kHz] ");
//            scanf("%d", &rs);
//            pc.printf("Enabling the output with %d option\n", rs);
//            rtc.setSquareWaveOutput(true, (Rtc_Ds1307::SqwRateSelect_t)rs);


//square wave off
//rtc.setSquareWaveOutput(false, Rtc_Ds1307::RS1Hz);