MSP430F5438 Info Memory Flash Segment A Probleme

#include "flash.h"

#include <stdlib.h>

//* ====================================================================== */

//* Funktion um Flash zu beschreiben                                       */

//* ====================================================================== */

void write_SegA(char offset,char *buf, unsigned char length) {

  WDTCTL = WDTPW + WDTHOLD;

  _DINT();

  FCTL4  = FWKEY;

  FCTL3  = FWKEY + LOCKA;                         // Toggle(Clear) Lock bit

  unsigned short i;

  Flash_ptr = (char *) 0x1980;                    // Initialisierung Flash Pointer

  Flash_ptr = Flash_ptr + offset;                 // Offset

  FCTL1 = FWKEY + WRT;                            // Set WRT bit for write operation

  for(i=0; i < length; i++)  {

      *Flash_ptr++ = buf[i];                      // buffer kopieren

      _NOP();                                     // SET BREAKPOINT HERE (DEBUGGER)

  }                         

  FCTL1 = FWKEY;                                  // Clear WRT bit

  FCTL3 = FWKEY + LOCKA;                          // Toggle(Set) LOCK bit

  FCTL4 = FWKEY + LOCKINFO;                       // Set LOCK bit

  _EINT();

}

//* ====================================================================== */

//* Funktion um Flash zu lesen                                             */

//* ====================================================================== */

void read_SegA(char offset,char *buffer, unsigned short laenge) {

  unsigned short i=0;

  Flash_ptr = (char *) 0x1980;                    // Initialisierung Flash Pointer

  Flash_ptr = Flash_ptr + offset;                 // Offset

  while(i < laenge) {                             // Flash lesen

    buffer[i] = *Flash_ptr++;

    i++;

  }

}