RaspberryPi WiringPi DS1307 FM24CL16 Tests

// g++ -o i2c i2c.cc -lwiringPi -Wall -std=c++14
#include <wiringPiI2C.h>
#include <wiringPi.h>
#include <ctime>

#include <iostream>

using namespace std;
#define FRAM 0x50 //0x51 52 53 54 55 56 57  .... 64 bytes
#define RTC 0x68 //Max 0x7FF .. CLOCK 0x00 to 0x07  RAM 0x08 to 0x3F
#define SECOND 0x00
#define MINUTE 0x01
#define HEURE 0x02
#define DAY 0x03
#define DATE 0x04
#define MONTH 0x05
#define YEAR 0x06


void setDate(){
    time_t now=time(0);
    tm *ltm=localtime(&now);

    cout<<" Year " <<1900+ltm->tm_year<<endl;
    cout <<" Month "<<1+ltm->tm_mon<<endl;
    cout <<" Day "<<ltm->tm_mday<<endl;
    cout <<" Time "<<1+ltm->tm_hour<<endl;
    cout <<" Min "<<1+ltm->tm_min<<endl;
    cout <<" sec "<<1+ltm->tm_sec<<endl;
}

int main(){
    int fd(-1),reg(0),data(0);
    cout <<"Test I2C WiringPi "<<endl;

//open file descriptor for i2C DEVICE
    fd=wiringPiI2CSetup(FRAM);
    if(fd<0){cout <<"Error fd !"<<endl;return 0;}
    else{cout<<"OK fd= "<<fd<<endl<<endl;}

//Write test data FM24CL16
    for(data=2;data<0x255;data+=2,reg++){wiringPiI2CWriteReg8(fd,reg,data);}//methode 1
    //for(data=2;data<0xFF;data+=2){wiringPiI2CWrite(fd,data);}//methode 2

//Read registers FM24Cl16
    for (reg=0;reg<50;reg++){cout <<reg<<" = "<<wiringPiI2CReadReg8(fd,reg)<<endl;}

//Test RTC
    fd=wiringPiI2CSetup(RTC);
    if(fd<0){cout<<"Error RTC"<<endl;return 0;}
    else{cout<<"OK fd= "<<fd<<endl<<endl;}

//Write RAM RTC 0x08 to 0x3F
    char text[]={"Antonio Villanueva Segura"};
    char *pto=text;
    reg =0x08 ;//Debut memoire RTC
    while (*pto!=0){
        cout <<"Write reg "<<reg<<" = "<<*pto<<endl;
        wiringPiI2CWriteReg8(fd,reg,*pto);
        pto++;
        reg++;
    };

    wiringPiI2CWriteReg8(fd,reg,0);//Fin texte
    reg=0x08;//Debut RAM

//Read RAM RTC
    while ((wiringPiI2CReadReg8(fd,reg))!=0){
        cout<<"Read reg "<<reg<<" = "
        <<(char) wiringPiI2CReadReg8(fd,reg)<<endl;
        reg++;
    }

//Date heure
    if ((wiringPiI2CReadReg8(fd,SECOND) & 0x80) !=0){
        cout <<"SET\n"; wiringPiI2CWriteReg8(fd,SECOND,0x00);
        }//SET ON RTC

    cout <<"DATE RTC "<<endl;
    setDate();
    while (TRUE)
    {
        cout <<std::hex<< ((wiringPiI2CReadReg8(fd,SECOND)) & 0xFF)<<" seg "
        <<std::hex<< ((wiringPiI2CRead(fd)) & 0xFF)<<" min "
        <<std::hex<< ((wiringPiI2CRead(fd)) & 0xFF)<<" heures "
        <<std::dec<<(int) ((wiringPiI2CRead(fd)) & 0x07)<<" jour "
        <<std::dec<<(int) ((wiringPiI2CRead(fd)) & 0x0F)<<" date "
        <<std::dec<<(int) ((wiringPiI2CRead(fd)) & 0x0F)<<" mois "
        <<std::dec<<(int)((wiringPiI2CRead(fd)) & 0x0F)<<" Year "
        <<endl;

        delay (2000);
    }
    return 0 ;

}