TMS320F280049: program delete after plug out the card

Hello,

i am trying to create sine wave using TMDXDOCK280049M,

my code is working after that i flash it, but if i plug out the bored the program are deleting it self.

the board is never use before.

• I tried to play with the boot switch (S1) and check all of the state of it. GPIO24 and GPIO32 are stays low.
• I tried to call InitGpio() function,but it still dont work,GPIO24 and GPIO32 are staying low.

here is my code:

#include "F28x_Project.h"
//
// Globals
//
volatile struct DAC_REGS* DAC_PTR[3] = {0x0,&DacaRegs,&DacbRegs};
//uint16_t dacval = 2048;

//
// Defines
//
#define REFERENCE_VDAC      0
#define REFERENCE_VREF      1
#define DACA         1
#define DACB         2

#define REFERENCE            REFERENCE_VDAC
#define DAC_NUM                DACA

//
// Function Prototypes
//
void configureDAC(uint16_t dac_num);



#define PERIOD 120
 static const uint16_t D_Val[PERIOD] = {  0x7ff, 0x86a, 0x8d5, 0x93f, 0x9a9, 0xa11, 0xa78, 0xadd, 0xb40, 0xba1,
                                          0xbff, 0xc5a, 0xcb2, 0xd08, 0xd59, 0xda7, 0xdf1, 0xe36, 0xe77, 0xeb4,
                                          0xeec, 0xf1f, 0xf4d, 0xf77, 0xf9a, 0xfb9, 0xfd2, 0xfe5, 0xff3, 0xffc,
                                          0xfff, 0xffc, 0xff3, 0xfe5, 0xfd2, 0xfb9, 0xf9a, 0xf77, 0xf4d, 0xf1f,
                                          0xeec, 0xeb4, 0xe77, 0xe36, 0xdf1, 0xda7, 0xd59, 0xd08, 0xcb2, 0xc5a,
                                          0xbff, 0xba1, 0xb40, 0xadd, 0xa78, 0xa11, 0x9a9, 0x93f, 0x8d5, 0x86a,
                                          0x7ff, 0x794, 0x729, 0x6bf, 0x655, 0x5ed, 0x586, 0x521, 0x4be, 0x45d,
                                          0x3ff, 0x3a4, 0x34c, 0x2f6, 0x2a5, 0x257, 0x20d, 0x1c8, 0x187, 0x14a,
                                          0x112, 0xdf, 0xb1, 0x87, 0x64, 0x45, 0x2c, 0x19, 0xb, 0x2,
                                          0x0, 0x2, 0xb, 0x19, 0x2c, 0x45, 0x64, 0x87, 0xb1, 0xdf,
                                          0x112, 0x14a, 0x187, 0x1c8, 0x20d, 0x257, 0x2a5, 0x2f6, 0x34c, 0x3a4,
                                          0x3ff, 0x45d, 0x4be, 0x521, 0x586, 0x5ed, 0x655, 0x6bf, 0x729, 0x794
                                        };
//
// Main
//
void main(void)
{
    InitGpio(); // new adding

    //
    // Initialize System Control:
    // PLL, WatchDog, enable Peripheral Clocks
    //
    InitSysCtrl();

    //
    // Disable CPU interrupts
    //
    DINT;

    //
    // Initialize the PIE control registers to their default state.
    // The default state is all PIE interrupts disabled and flags are cleared.
    //
    InitPieCtrl();

    //
    // Clear all interrupts and initialize PIE vector table:
    //
    IER = 0x0000;
    IFR = 0x0000;
    InitPieVectTable();

    //
    // Configure DAC
    //
    configureDAC(DAC_NUM);


    int i=0;


    while(1)
    {

            while(i<PERIOD)
            {
                 DAC_PTR[DAC_NUM]->DACVALS.all = D_Val[i];
                 DELAY_US(166.35);              //control on the frequency 166.35 = 50.0062hz
                i++;
            }
            i=0;
    }
}


//
// configureDAC - Configure specified DAC output
//
void configureDAC(uint16_t dac_num)
{
    EALLOW;
    DAC_PTR[dac_num]->DACCTL.bit.DACREFSEL = REFERENCE;
    DAC_PTR[dac_num]->DACOUTEN.bit.DACOUTEN = 1;
    DAC_PTR[dac_num]->DACVALS.all = 0;
    DELAY_US(10); // Delay for buffered DAC to power up
    EDIS;
}

//
// End of File

thank you very much

Michael