15A_FLASH_long

/*
 * 15A_FLASH_long: Erases flash segment D and then writes a 32 bit value
 * to memory location 0x1800 using BLK write mode.  The LED toggles upon
 * completion and the results can be read using the debugger.
 *
 * MCLK and SMCLK running at approximately 1.048 MHz
 * ACLK uses REFO (~32,768 Hz)
 *
 * Frank Milburn 	26 February 2016
 */

#include "driverlib.h"

uint32_t data[] = {0x12345678};	  // data to be written

#define INFOD_START   (0x1800)    // address in flash where data will be written
#define RED_LED       GPIO_PORT_P1,GPIO_PIN0

void main(void)
{
    uint8_t status;

    WDT_A_hold(WDT_A_BASE);       // stop the WDT

    GPIO_setAsOutputPin(RED_LED);

    //Flash erase segment D (starts at INFOD_START)
    do
    {
        FlashCtl_eraseSegment((uint8_t *)INFOD_START);
        status = FlashCtl_performEraseCheck((uint8_t *)INFOD_START, 128);
    }
    while(status == STATUS_FAIL);

    //Flash write
    FlashCtl_write32(data,(uint32_t *)(INFOD_START),1);

    while(1)
    {
        GPIO_toggleOutputOnPin(RED_LED);
        __delay_cycles(1000000);
        // Pause debugger after reaching this point and open up the memory
        // browser to location 0x001800 and set the viewer to 32 bit hex - C style
        // The number 0x12345678 will be visible in the window.
    }
}
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