I2C hilfeschrei

Vielleicht solltest Du mal den Source Code Posten. Vielleicht kann man 
dann besser helfen.

Gruß
Markus
http://www.elektronik-projekt.de/

Tja Du hast wohl recht ich dachte ich hätte Ihn in den Anhang gelegt.
Aber Mittlerweilen bin ich einen schritt weiter gekommen.
Die Zeit kann ich jetzt zurücklesen aber leider bleibt sie stehen.

#include <mega163.h>
#include <stdio.h>
#include <delay.h>

// I2C Bus functions
#asm
   .equ __i2c_port=0x15
   .equ __sda_bit=1
   .equ __scl_bit=0
#endasm
#include <i2c.h>

// DS1307 Real Time Clock functions
#include <ds1307.h>

// Alphanumeric LCD Module functions
#asm
   .equ __lcd_port=0x18
#endasm
#include <lcd.h>

// Declare your global variables here
char lcd_buffer[81];

void main(void)
{
// Declare your local variables here

// Input/Output Ports initialization
// Port A initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In 
Func7=In
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T 
State7=T
PORTA=0x00;
DDRA=0x00;

// Port B initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In 
Func7=In
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T 
State7=T
PORTB=0x00;
DDRB=0x00;

// Port C initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In 
Func7=In
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T 
State7=T
PORTC=0x00;
DDRC=0x00;

// Port D initialization
// Func0=In Func1=In Func2=In Func3=In Func4=In Func5=In Func6=In 
Func7=In
// State0=T State1=T State2=T State3=T State4=T State5=T State6=T 
State7=T
PORTD=0x00;
DDRD=0x00;

// Timer/Counter 0 initialization
// Clock source: System Clock
// Clock value: Timer 0 Stopped
TCCR0=0x00;
TCNT0=0x00;

// Timer/Counter 1 initialization
// Clock source: System Clock
// Clock value: Timer 1 Stopped
// Mode: Normal top=FFFFh
// OC1A output: Discon.
// OC1B output: Discon.
// Noise Canceler: Off
// Input Capture on Falling Edge
TCCR1A=0x00;
TCCR1B=0x00;
TCNT1H=0x00;
TCNT1L=0x00;
OCR1AH=0x00;
OCR1AL=0x00;
OCR1BH=0x00;
OCR1BL=0x00;

// Timer/Counter 2 initialization
// Clock source: System Clock
// Clock value: Timer 2 Stopped
// Mode: Normal top=FFh
// OC2 output: Disconnected
TCCR2=0x00;
ASSR=0x00;
TCNT2=0x00;
OCR2=0x00;

// External Interrupt(s) initialization
// INT0: Off
// INT1: Off
GIMSK=0x00;
MCUCR=0x00;

// Timer(s)/Counter(s) Interrupt(s) initialization
TIMSK=0x00;

UBRRHI=0x00;

// Analog Comparator initialization
// Analog Comparator: Off
// Analog Comparator Input Capture by Timer/Counter 1: Off
// Analog Comparator Output: Off
ACSR=0x80;
SFIOR=0x00;

// I2C Bus initialization
i2c_init();

// DS1307 Real Time Clock initialization
// Square wave output on pin SQW/OUT: Off
// SQW/OUT pin state: 0
rtc_init(0,0,0);

// LCD module initialization
lcd_init(40);

rtc_set_time(18,10,00);
rtc_set_date(23,7,02);



while (1)
      {
      // Place your code here
        char h,m,s,i,tag,monat,jahr;





      for (i=0;i<10;i++)
      {
       rtc_get_time(&h,&m,&s);
       rtc_get_date(&tag,&monat,&jahr);
      delay_ms(2000);
      sprintf(lcd_buffer,"**es ist %2d:%2d:%2d*** 
counter=%2d",h,m,s,i);
      lcd_gotoxy(0,0);
      lcd_puts(lcd_buffer);


      sprintf(lcd_buffer,"Datum %2d:%2d:%2d 
counter=%2d",tag,monat,jahr,i);
      lcd_gotoxy(0,1);
      lcd_puts(lcd_buffer);

      }
      };
}