关于MSP432的INFO区域

您可以使用INFO区域（除去TLV），但不建议您使用MSP432 这个INFO区域来存储掉电保存数据。参考下图

INFO区域主要是用来存放一些预编程程序 BSL等，用户使用很容易出现问题

建议使用MAIN MEMORY。您可以参考下下面的程序，每次重置设备后，MAIN BANK 1, SECTOR 31 的var1 就会加1.

在CCS调试时，在project properties->debug->MSP432 Settings选择Erase and download necessary segments only

附上CMD文件

/******************************************************************************

*

* Copyright (C) 2012 - 2016 Texas Instruments Incorporated - http://www.ti.com/

*

* Redistribution and use in source and binary forms, with or without

* modification, are permitted provided that the following conditions

* are met:

*

* Redistributions of source code must retain the above copyright

* notice, this list of conditions and the following disclaimer.

*

* Redistributions in binary form must reproduce the above copyright

* notice, this list of conditions and the following disclaimer in the

* documentation and/or other materials provided with the

* distribution.

*

* Neither the name of Texas Instruments Incorporated nor the names of

* its contributors may be used to endorse or promote products derived

* from this software without specific prior written permission.

*

* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

* LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

* A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

* OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

*

* Default linker command file for Texas Instruments MSP432P401R

*

* File creation date: 2016-06-29

*

*****************************************************************************/

--retain=flashMailbox

MEMORY

{

MAIN (RX) : origin = 0x00000000, length = 0x0003F000

MYDATA (RX) : origin = 0x0003F000, length = 0x00001000

INFO (RX) : origin = 0x00200000, length = 0x00004000

#ifdef __TI_COMPILER_VERSION__

#if __TI_COMPILER_VERSION__ >= 15009000

ALIAS

{

SRAM_CODE (RWX): origin = 0x01000000

SRAM_DATA (RW) : origin = 0x20000000

} length = 0x00010000

#else

/* Hint: If the user wants to use ram functions, please observe that SRAM_CODE */

/* and SRAM_DATA memory areas are overlapping. You need to take measures to separate */

/* data from code in RAM. This is only valid for Compiler version earlier than 15.09.0.STS.*/

SRAM_CODE (RWX): origin = 0x01000000, length = 0x00010000

SRAM_DATA (RW) : origin = 0x20000000, length = 0x00010000

#endif

#endif

}

/* The following command line options are set as part of the CCS project. */

/* If you are building using the command line, or for some reason want to */

/* define them here, you can uncomment and modify these lines as needed. */

/* If you are using CCS for building, it is probably better to make any such */

/* modifications in your CCS project and leave this file alone. */

/* */

/* A heap size of 1024 bytes is recommended when you plan to use printf() */

/* for debug output to the console window. */

/* */

/* --heap_size=1024 */

/* --stack_size=512 */

/* --library=rtsv7M4_T_le_eabi.lib */

/* Section allocation in memory */

SECTIONS

{

.intvecs: > 0x00000000

.text : > MAIN

.const : > MAIN

.cinit : > MAIN

.pinit : > MAIN

.init_array : > MAIN

.mydata : {} > MYDATA

.binit : {} > MAIN

/* The following sections show the usage of the INFO flash memory */

/* INFO flash memory is intended to be used for the following */

/* device specific purposes: */

/* Flash mailbox for device security operations */

.flashMailbox : > 0x00200000

/* TLV table for device identification and characterization */

.tlvTable : > 0x00201000

/* BSL area for device bootstrap loader */

.bslArea : > 0x00202000

.vtable : > 0x20000000

.data : > SRAM_DATA

.bss : > SRAM_DATA

.sysmem : > SRAM_DATA

.stack : > SRAM_DATA (HIGH)

#ifdef __TI_COMPILER_VERSION__

#if __TI_COMPILER_VERSION__ >= 15009000

.TI.ramfunc : {} load=MAIN, run=SRAM_CODE, table(BINIT)

#endif

#endif

}

/* Symbolic definition of the WDTCTL register for RTS */

WDTCTL_SYM = 0x4000480C;

以及C文件

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/*
 * -------------------------------------------
 *    MSP432 DriverLib - v3_50_00_02 
 * -------------------------------------------
 *
 * --COPYRIGHT--,BSD,BSD
 * Copyright (c) 2016, Texas Instruments Incorporated
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * *  Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 *
 * *  Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 *
 * *  Neither the name of Texas Instruments Incorporated nor the names of
 *    its contributors may be used to endorse or promote products derived
 *    from this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
 * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
 * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
 * EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 * --/COPYRIGHT--*/
/*******************************************************************************
 * MSP432 Flash Controller - Programming Calibration Data
 *
 * Description: This example shows the use of the the Flash Controller APIs
 * to erase and program simulated calibration data to a specific area in memory.
 * Data in this example is programmed to user area of memory. The "fake"
 * calibration data is stored in a RAM array and set using the memset function,
 * however in a real application this buffer would be filled out using a serial
 * interface such as I2C.
 *
 *                MSP432P401
 *             ------------------
 *         /|\|                  |
 *          | |                  |
 *          --|RST               |
 *            |                  |
 *            |                  |
 *            |                  |
 *            |                  |
 *            |                  |
 *
 * Author: Timothy Logan (Modified by John Morrison for this E2E post)
 ******************************************************************************/
/* DriverLib Includes */
#include <ti/devices/msp432p4xx/driverlib/driverlib.h>

/* Standard Includes */
#include <stdint.h>

#include <stdbool.h>
#include <string.h>

#define CALIBRATION_START 0x0003F000

/* Statics */
uint16_t simulatedCalibrationData[2048];

/* pragmas to define the variables in flash */
#pragma DATA_SECTION(var1, ".mydata");
#pragma DATA_ALIGN(var1, 2);
uint16_t var1, var1LOCAL = 0;

int main(void)
{
    var1LOCAL = var1;
    var1LOCAL++;
    /* Since this program has a huge buffer that simulates the calibration data,
     * halting the watch dog is done in the reset ISR to avoid a watchdog 
     * timeout during the zero 
     */

    /* Setting our MCLK to 48MHz for faster programming */
    MAP_PCM_setCoreVoltageLevel(PCM_VCORE1);
    FlashCtl_setWaitState(FLASH_BANK0, 2);
    FlashCtl_setWaitState(FLASH_BANK1, 2);
    MAP_CS_setDCOCenteredFrequency(CS_DCO_FREQUENCY_48);

    /* Initializing our buffer to a pattern of 0xA5 */
    memset(simulatedCalibrationData, 0xA5, 4096);
    simulatedCalibrationData[0] = var1LOCAL;
    
    /* Unprotecting Info Bank 0, Sector 0  */
    MAP_FlashCtl_unprotectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR31);

    /* Trying to erase the sector. Within this function, the API will
        automatically try to erase the maximum number of tries. If it fails,
         trap in an infinite loop */
    if(!MAP_FlashCtl_eraseSector(CALIBRATION_START))
        while(1);

    /* Trying to program the memory. Within this function, the API will 
        automatically try to program the maximum number of tries. If it fails,
        trap inside an infinite loop */
    if(!MAP_FlashCtl_programMemory(simulatedCalibrationData,
            (void*) CALIBRATION_START, 4096))
                while(1);

    /* Setting the sector back to protected  */
    MAP_FlashCtl_protectSector(FLASH_MAIN_MEMORY_SPACE_BANK1,FLASH_SECTOR31);

    /* Going to LPM3 when not in use */
    while (1)
    {
        MAP_PCM_gotoLPM3();
    }
}