AVRFreaks.net

#define FOSC0           14745600
#define BOARD_OSC0_HZ   14745600
#define FCPU_HZ         14745600
#define FPBA_HZ         14745600

here is the main

// main function
int main(void) {
  init_sys_clocks();
  init_dbg_rs232(FPBA_HZ);
  print_dbg("AT24CXX Example\r\n");

  irq_initialize_vectors();


  twi_init();

  /* Power up delay: This device needs a maximum of 230ms before it
   * can be accessed. Another method would be to wait until the the
   * detect line goes low but this won't work during a debugging session
   * since the device is not reset.*/
  cpu_delay_ms(230, FCPU_HZ);

  at24cxx_init(FCPU_HZ);
// !!! Don't write
  //print_dbg("Write @0: 0x55 - @1: 0xAA");
  //at24cxx_write_byte(0,0x55);
  //at24cxx_write_byte(1,0xaa);
  //print_dbg("- Done\r\n");

// !!! read 0x13 bytes
  U8 tmp1,tmp2;
  for(tmp1=0;tmp1<=0x12;tmp1++)
  {
  tmp2 = at24cxx_read_byte(tmp1);
  print_dbg("Read @0x");
  print_dbg_char_hex(tmp1);
  print_dbg(": 0x");
  print_dbg_char_hex(tmp2);
  print_dbg("\r\n");
  }
  while(true);
}