flashctl_ex2_eraseCopyWrite.c

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 * Copyright (c) 2017, Texas Instruments Incorporated
 * All rights reserved.
 *
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 *    notice, this list of conditions and the following disclaimer in the
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//*****************************************************************************
//*****************************************************************************
#include "driverlib.h"
//*****************************************************************************
//
//INFO address in flash from which data is copied
//
//*****************************************************************************
#define INFOC_START   (0x1880)
//*****************************************************************************
//
//INFO address in flash to which data is copied into
//
//*****************************************************************************
#define INFOD_START   (0x1800)
 
//*****************************************************************************
//
//Number of bytes being copied
//
//*****************************************************************************
#define NUMBER_OF_BYTES   128
 
//*****************************************************************************
//
//Dummy array of 'calibration data' - to be stored in flash
//
//*****************************************************************************
uint8_t calibration_data[NUMBER_OF_BYTES];
 
//*****************************************************************************
//
//Delay cycles
//
//*****************************************************************************
#define DELAY_TIME 1000000
 
//*****************************************************************************
//
//Function prototypes
//
//*****************************************************************************
void write_SegC (void);
void copy_C2D (void);
 
void main (void)
{
    volatile uint16_t i;
    uint8_t value = 0;
 
    //Stop WDT
    WDT_A_hold(WDT_A_BASE);
 
    //Set P1.0 to output direction
    GPIO_setAsOutputPin(
        GPIO_PORT_P1,
        GPIO_PIN0
        );
 
    //fill value for calibration data
    for (i = 0; i < NUMBER_OF_BYTES; i++)
    {
        calibration_data[i] = value++;
    }
 
    //Write segment C, increment value
    write_SegC();
 
    //Copy segment C to D
    copy_C2D();
 
    //continuous loop
    while (1)
    {
        //Toggle P1.0
        GPIO_toggleOutputOnPin(
            GPIO_PORT_P1,
            GPIO_PIN0
            );
 
        //Delay
        __delay_cycles(DELAY_TIME);
    }
}
 
//------------------------------------------------------------------------------
//Input = value, holds value to write to Seg C
//------------------------------------------------------------------------------
void write_SegC ()
{
    uint16_t status;
 
    //Erase INFOC
    do
    {
        FlashCtl_eraseSegment((uint8_t *)INFOC_START);
        status = FlashCtl_performEraseCheck((uint8_t *)INFOC_START,
            NUMBER_OF_BYTES
            );
    } while (status == STATUS_FAIL);
 
    //Flash Write
    FlashCtl_write8(calibration_data,
        (uint8_t *)INFOC_START,
        NUMBER_OF_BYTES
        );
}
 
//------------------------------------------------------------------------------
//Copy Seg C to Seg D
//------------------------------------------------------------------------------
void copy_C2D (void)
{
    char *FLASH_ptrC;
    char *FLASH_ptrD;
 
    uint16_t status;
 
    //Erase INFOD
    do {
        FlashCtl_eraseSegment((uint8_t *)INFOD_START);
        status = FlashCtl_performEraseCheck((uint8_t *)INFOD_START,
            NUMBER_OF_BYTES
            );
    } while (status == STATUS_FAIL);
 
    //Initialize Flash segment C ptr
    FLASH_ptrC = (char *)INFOC_START;
 
    //Initialize Flash segment D ptr
    FLASH_ptrD = (char *)INFOD_START;
 
    //Flash Write
    FlashCtl_write8((uint8_t *)FLASH_ptrC,
        (uint8_t *)FLASH_ptrD,
        NUMBER_OF_BYTES
        );
}