msp430F4152 information memory数据丢失

利用  information memory 保存数据；原始数据通过编程器下载进去，程序如下：

#pragma location = 0x1040
__root const uint8_t INFO_1[64] = {。。。。。}

现在发现一部分MCU上电读出来的数据有FF FE之类的乱码，上电只读没有写操作。

Susan Yang：

您是否占用了SegmentA？

如用户指南中6.2.1 SegmentA on MSP430FG47x, MSP430F47x, MSP430F47x3/4, and MSP430F471xx Devices描述。您需要先unlock SegmentA

user3673947利用  information memory 保存数据；原始数据通过编程器下载进去

另外请您先确保数据被成功下载进去了

user3673947：

回复 Susan Yang:

msp430f4152是4个段，INFO_A, INFO_B ,INFO_C ,INFO_D ,64字节*4，不是两,128*2，帮忙看下，谢谢啊。

user3673947：

回复 Susan Yang:

在么，我看论坛有很多人提过这个问题，都没有说怎么解决，你们帮忙看下。。。。

Susan Yang：

回复 user3673947:

很抱歉，我手边暂时没有F4系列的板子。我之后会使用F5的板子来测试一下

Susan Yang：

回复 user3673947:

若是可以的话，也请将您的代码私信一下，谢谢

Susan Yang：

回复 user3673947:

以下是相关的测试代码以及实验结果

测试代码

/* --COPYRIGHT--,BSD_EX* Copyright (c) 2012, 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.**********************************************************************************MSP430 CODE EXAMPLE DISCLAIMER** MSP430 code examples are self-contained low-level programs that typically* demonstrate a single peripheral function or device feature in a highly* concise manner. For this the code may rely on the device's power-on default* register values and settings such as the clock configuration and care must* be taken when combining code from several examples to avoid potential side* effects. Also see www.ti.com/grace for a GUI- and www.ti.com/msp430ware* for an API functional library-approach to peripheral configuration.** --/COPYRIGHT--*/
//******************************************************************************
//MSP430F552x Demo - Flash In-System Programming w/ Long-Word write at 0x1800
//
//Description: This program first erases flash seg D, then it writes a 32-bit
//value to memory location 0x1800 using long-word write mode. Long-word write
//provides faster write than byte/word mode.
//ACLK = REFO = 32kHz, MCLK = SMCLK = default DCO 1048576Hz
//
//MSP430x552x
//-----------------
///|\|XIN|-
//| ||
//--|RSTXOUT|-
//||
//
//
//Bhargavi Nisarga
//Texas Instruments Inc.
//April 2009
//Built with CCSv4 and IAR Embedded Workbench Version: 4.21
//******************************************************************************#include <msp430.h>int main(void)
{unsigned long * Flash_ptrD;// Initialize Flash pointer Seg Dunsigned long value;WDTCTL = WDTPW+WDTHOLD;// Stop WDTFlash_ptrD = (unsigned long *) 0x1800;// Initialize Flash pointervalue = 0x12345678;// Initialize ValueFCTL3 = FWKEY;// Clear Lock bitFCTL1 = FWKEY+ERASE;// Set Erase bit*Flash_ptrD = 0;// Dummy write to erase Flash segFCTL1 = FWKEY+BLKWRT;// Enable long-word write*Flash_ptrD = value;// Write to FlashFCTL1 = FWKEY;// Clear WRT bitFCTL3 = FWKEY+LOCK;// Set LOCK bitwhile(1);// Loop forever, SET BREAKPOINT HERE
}

测试过程

1 在CCS内新建工程，写入代码，编译成功后连接开发板调试

可以发现程序运行后，0x1800处已经成功写入数据

2 而后板子断电，而后重新连接电脑上的uniflash来读memory，数据依然存在

Susan Yang：

回复 user3673947:

在MSP430F5529中，0x1800是information memory的D

user3673947：

回复 Susan Yang:

msp430F4152的infoD保存的是不是校准参数，我这边测试也可以下载进去，只不过是多次上电，下电有个别数据出错了

Susan Yang：

回复 user3673947:

一般是放在 SegmentA的

user3673947：

回复 Susan Yang:

在哪里可以查到msp430F4152的A、B、C、D那个区域不能写数据