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CCS/SW-EK-TM4C1294XL: CORTEX_M4_0: File Loader: Verification failed: Values at address 0x0000000000000000 do not match Please verify target memory and memory map.

Part Number: SW-EK-TM4C1294XL

Tool/software: Code Composer Studio

I have falied to test flash program and now I can't download any code to the launchpad with the error "CORTEX_M4_0: File Loader: Verification failed: Values at address 0x0000000000000000 do not match Please verify target memory and memory map.".

my codes is as follow:

int main(void) {

SysCtlClockFreqSet((SYSCTL_XTAL_25MHZ |SYSCTL_OSC_MAIN |SYSCTL_USE_PLL |SYSCTL_CFG_VCO_480), 80000000);

int i =1;

FlashErase(DDSADDR);

FlashProgram(sin,DDSADDR,sizeof(sin));

FlashProtectSet(DDSADDR,FlashReadOnly);

FlashProtectSave();

while(1);

return 0;

}

Where DDSADDR equal 0x004020 means the address I want to write and the sin is a suitable array.

What the problem actually happened? What can I do to solve this problem?