关于MSP430FR4133写FRAM的问题

只看该作者 · 2017-2-15 20:41

当执行FRAMWrite_uint64((uint64_t *)FRAM_RECORD_ADDRESS,0); 时，后20*4会被修改为0
原来0xffffffff,0xffffffff,被改为0x0000ffff,0x00000000

当执行FRAMWrite_Long((uint32_t *)FRAM_RECORD_ADDRESS, 0);时，后10*4=40会被修改为0
原来0xffffffff,被改为0x0000ffff,

void FRAMWrite_uint64(uint64_t *pFRAM_write_ptr, uint64_t ui64data)
{
      SYSCFG0 &= ~DFWP;
      *pFRAM_write_ptr = ui64data;
      SYSCFG0 |= DFWP;
}

void FRAMWrite_Long(uint32_t *pFRAM_write_ptr, uint32_t ui32data)
{
      SYSCFG0 &= ~DFWP;
      *pFRAM_write_ptr = ui32data;
      SYSCFG0 |= DFWP;
}

#define FRAM_RECORD_ADDRESS  0x1812

FRAMWrite_uint64((uint64_t *)FRAM_RECORD_ADDRESS,0);
FRAMWrite_Long((uint32_t *)FRAM_RECORD_ADDRESS, 0);

只看该作者 · 2017-2-15 21:09

FRAM好像可以提供8位16位写入，64位有问题
FRAM
The FRAM can be programmed via the JTAG port, Spy-Bi-Wire (SBW), the BSL, or in-system by the CPU.
Features of the FRAM include:
• Ultra-low-power ultra-fast-write nonvolatile memory
• Byte and word access capability
• Programmable and automated wait-state generation
• Error correction coding (ECC)

只看该作者 · 2017-2-15 21:17

参考官方代码MSP430Ware中例子
//******************************************************************************
// MSP430FR413x 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.
// NOTE: Running this example for extended periods will impact the FRAM
// endurance.
// ACLK = REFO, MCLK = SMCLK = default DCODIV = ~1MHz
//
//          MSP430FR4133
//       ---------------
//    /|\|             |
//    | |             |
//    --|RST          |
//       |             |
//       |       P1.0 |---> LED
//
// Cen Fang
// Texas Instruments Inc.
// August 2013
// Built with IAR Embedded Workbench v5.60 & Code Composer Studio v5.5
//******************************************************************************
#include <msp430.h>

void FRAMWrite(void);

unsigned char count = 0;
unsigned long *FRAM_write_ptr;
unsigned long data;

#define FRAM_TEST_START 0x1800

int main(void)
{
WDTCTL = WDTPW | WDTHOLD;             // Stop watchdog timer

P1OUT &= ~BIT0;                      // Clear P1.0 output latch for a defined power-on state
P1DIR |= BIT0;                         // Set P1.0 to output directionOUT

PM5CTL0 &= ~LOCKLPM5;                // Disable the GPIO power-on default high-impedance mode
                                          // to activate previously configured port settings
data = 0x11111111;                   // Initialize dummy data

while(1)
{
      data += 0x00010001;
      FRAM_write_ptr = (unsigned long *)FRAM_TEST_START;
      FRAMWrite();
      count++;
      if (count > 100)
      {
         P1OUT ^= 0x01;                // Toggle LED to show 512K bytes
         count = 0;                   // ..have been written
         data = 0x11111111;
      }
}
}

void FRAMWrite (void)
{
unsigned int i=0;

SYSCFG0 &= ~DFWP;
for (i = 0; i < 128; i++)
{
      *FRAM_write_ptr++ = data;
}
SYSCFG0 |= DFWP;
}