#include <stdio.h>
#include <fcntl.h>
#include <stdlib.h>
#include "/usr/include/linux/i2c-dev.h"

int main(void)
{
        int fd;
        char filename[20];
        char buf[10],batt;
        int res;
        batt=0;

        sprintf(filename, "/dev/i2c-0");
        fd = open(filename, O_RDWR);
        if (fd < 0) {
                printf("Error on open\n");
                exit(1);
        }

        if (ioctl(fd, I2C_SLAVE, 0x05) < 0) {
                printf("Error on slave address\n");
                exit(1);
        }


        buf[0] = 0x01;
        buf[1] = 0x3F;
        if(write(fd,buf,2)!=2)
        {
                printf("Para nicht uebergeben\n");
        }


        buf[0] = 0x00;
        buf[1] = 0x03;
        if(write(fd,buf,2)!=2)
        {
                printf("Befehl nicht geschrieben\n");
        }


        batt = 0x15;
        read(fd,batt,1);



        printf("Alles OK\n\n");
        close(fd);

        return 0;
}