MSP430FR2433: MSP430FR2433内部存储器FRAM

为什么我从FRAM存储器的地址读取值一直读取不到，麻烦可以提供一下FRAM读取操作的正确代码吗

void FRAMRead_str (char index)
{char *Fram_ptr = ((char *)FRAM_TEST_START) + index;return *Fram_ptr;
}

Susan Yang：

您是否有参考例程？

https://www.ti2k.com/wp-content/uploads/ti2k/DeyiSupport_MSP430_node

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//******************************************************************************
//MSP430FR243x Demo - Long word writes to FRAM
//
//Description: Use long word write to write to 512 byte blocks of FRAM.
//Toggle LED after every 100 writes.
//ACLK = REFO, MCLK = SMCLK = default DCODIV = ~1MHz
//
//It is recommended to disable interrupt while code is writing to main FRAM,
//because it is dangerous for running the interrupt services routine with//PFWP disabled.
//This code examples is using DFWP which wouldn't have dangerous. But it is//recommended to disable interrupt if user is using PFWP.
//
//MSP430FR2433
//---------------
///|\||
//| ||
//--|RST|
//||
//|P1.0 |---> LED
//
//Ling Zhu
//Texas Instruments Inc.
//Feb 2015
//Built with IAR Embedded Workbench v6.20 & Code Composer Studio v6.0.1
//******************************************************************************
#include <msp430.h>void FRAMWrite(void);unsigned char count = 0;
unsigned long *FRAM_write_ptr;
unsigned long data;#define FRAM_TEST_START 0x1800int main(void)
{WDTCTL = WDTPW | WDTHOLD;// Stop watchdog timerP1OUT &= ~BIT0;// Clear P1.0 output latch for a defined power-on stateP1DIR |= BIT0;// Set P1.0 to output directionOUTPM5CTL0 &= ~LOCKLPM5;// Disable the GPIO power-on default high-impedance mode// to activate previously configured port settingsdata = 0x11111111;// Initialize dummy datawhile(1){data += 0x00010001;FRAM_write_ptr = (unsigned long *)FRAM_TEST_START;FRAMWrite();count++;if (count > 100){P1OUT ^= 0x01;// Toggle LED to show 512 bytescount = 0;// have been writtendata = 0x11111111;}}
}void FRAMWrite (void)
{unsigned int i=0;SYSCFG0 = FRWPPW | PFWP;for (i = 0; i < 128; i++){*FRAM_write_ptr++ = data;}SYSCFG0 = FRWPPW | PFWP | DFWP;
}