What is the difference between if security protect byte FSEC set to 0xFF & 0xFD ?
//FSEC EQU 0xFE ; no security in flash
//FSEC EQU 0xFF ; security protect
FSEC EQU 0xFD ; security protect
When I set FSEC to 0xFD , my program execution have something difference with 0xFE(No security)when FSEC setting to 0xFD, the program can't execute correct ? I am very confusing ?
#define FLASH_TEMPERATURE_DELTA_ADDR 0x7C00
FlashAddr=(uint8_t *) FLASH_TEMPERATURE_DELTA_ADDR;
FlashHeader=*FlashAddr;
#if defined (DEBUG_SYATEM_STARTUP)
PRINTF("\r\n FlashHeader = %x , FlashAddr = %x\r\n",FlashHeader,FlashAddr);
#endif
if(FlashHeader!=FLUSHBUFFER_HEADER)
{
GPIO_DRV_ClearPinOutput(kGpioRedLED);
OSA_TimeDelay(2500);
GPIO_DRV_SetPinOutput(kGpioRedLED);
} else {
LED_toggle_red_led(1);
}
The above program can't be executed correctly, I only read 0x7c00 data & light LED , it is very simple.
