Compiler: TI MSP430 initialize flash on programming time

Hi Min,

You can refer this code for example.

//******************************************************************************
//  MSP430G2xx3 Demo - Flash In-System Programming, Copy SegC to SegD
//
//  Description: This program first erases flash seg C, then it increments all
//  values in seg C, then it erases seg D, then copies seg C to seg D.
//  Assumed MCLK 771kHz - 1428kHz.
//  //* Set Breakpoint on NOP in the Mainloop to avoid Stressing Flash *//
//
//               MSP430G2xx3
//            -----------------
//        /|\|              XIN|-
//         | |                 |
//         --|RST          XOUT|-
//           |                 |
//
//  D. Dang
//  Texas Instruments Inc.
//  December 2010
//   Built with CCS Version 4.2.0 and IAR Embedded Workbench Version: 5.10
//******************************************************************************

#include <msp430.h>

unsigned int i;
unsigned short value[10];                   // value to store in flash

/* * Define variables in Flash Section, with persistent type and initial value
 * * set(initial value) the configuration data on the flash memory in programming time
 */
#pragma PERSISTENT(configureData)
unsigned short configureData[10] = {1,2,3,4,5,6,7,8,9,10};

// Function prototypes
void write_ConfigureData (unsigned short *value);
void read_ConfigureData (unsigned short *value);

int main(void)
{
  WDTCTL = WDTPW + WDTHOLD;                 // Stop watchdog timer
  if (CALBC1_1MHZ==0xFF)					// If calibration constant erased
  {											
    while(1);                               // do not load, trap CPU!!	
  }
  DCOCTL = 0;                               // Select lowest DCOx and MODx settings
  BCSCTL1 = CALBC1_1MHZ;                    // Set DCO to 1MHz
  DCOCTL = CALDCO_1MHZ;
  FCTL2 = FWKEY + FSSEL0 + FN1;             // MCLK/3 for Flash Timing Generator

  read_ConfigureData(value);                // Read value from configureData ( in Flash memory)

  for (i=0; i<10; i++)
  {
      value[i]++;                           // Increment per re-boot
  }

  write_ConfigureData(value);               // Write value to configureData ( in Flash memory)

  while(1){;}// Repeat forever

}

void write_ConfigureData (unsigned short *value)
{
  unsigned short *Flash_ptr;                // Flash pointer
  unsigned int i;

  Flash_ptr = configureData;                // Initialize Flash pointer
  FCTL1 = FWKEY + ERASE;                    // Set Erase bit
  FCTL3 = FWKEY;                            // Clear Lock bit
  *Flash_ptr = 0;                           // Dummy write to erase Flash segment

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

  for (i=0; i<10; i++)
  {
    *Flash_ptr++ = value[i];                // Write value to flash
  }

  FCTL1 = FWKEY;                            // Clear WRT bit
  FCTL3 = FWKEY + LOCK;                     // Set LOCK bit
}

void read_ConfigureData (unsigned short *value)
{
  unsigned short *Flash_ptr;                // Segment C pointer
  unsigned int i;

  Flash_ptr = configureData;                // Initialize Flash segment C pointer

  for (i=0; i<10; i++)
  {
      value[i] = *Flash_ptr++;              // Write value to flash
  }
}

Best Regards,

Winter Yu

Hi Min,

Besides, you need add this code to your .cmd file. 

Best Regards,

Winter Yu