MSP430G2553 Seg Flash R/W Code

MSP430_Flash_RW

#include <msp430.h>
#include <stdint.h>

void FlashErase(uint16_t addr)
{
  FCTL3 = FWKEY;
  FCTL1 = FWKEY + ERASE;
  while(FCTL3 & BUSY);
  *(uint8_t *)addr = 0;
  FCTL1 = FWKEY;
  FCTL3 = FWKEY + LOCK;
  while(FCTL3 & BUSY);
}

void FlashProgram(uint16_t addr,uint8_t data)
{
  FCTL3 = FWKEY;
  FCTL1 = FWKEY + WRT;
  while(FCTL3 & BUSY);
  *((uint8_t *)addr)=data;
  FCTL1 = FWKEY;
  FCTL3 = FWKEY + LOCK;
  while(FCTL3 & BUSY);

}

int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;

  BCSCTL2 = SELM_0 | DIVM_0 | DIVS_0;

  DCOCTL = 0x00;
  BCSCTL1 = CALBC1_16MHZ;     /* Set DCO to 16MHz */
  DCOCTL = CALDCO_16MHZ;
  BCSCTL1 |= XT2OFF | DIVA_0;
  BCSCTL3 = XT2S_0 | LFXT1S_2 | XCAP_1;
  IFG1 &= ~OFIFG;

  FCTL2 = FWKEY | FSSEL_2 | FN5 | FN3 | FN1 | FN0;

  while(1)
  {
      FlashErase(0x1000);
      FlashProgram(0x1000,70);
      __no_operation();

      FlashErase(0x1000);
      FlashProgram(0x1000,80);
      __no_operation();
  }
}