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[ARM资料] stm32 flash 读写出问题

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发表于 2014-3-9 11:28:59 | 显示全部楼层 |阅读模式
   我使用stm32对flash进行写入,但是每次校验的时候都出错,相当于没写进去,我也看了一下写入的格式和要求,配置了RCC和Unlock了flash,大家看一下我的代码:
u8 flash_write(u32 StartAddr,u16 *p_data,u32 size)
{
    volatile FLASH_Status FLASHStatus;       
    u32 EndAddr=StartAddr+size*2;       
        vu32 NbrOfPage = 0;       
        u32 EraseCounter = 0x0, Address = 0x0;
        int i;
        int MemoryProgramStatus=1;       
    FLASH_Unlock();          //flash解锁

        NbrOfPage=((EndAddr-StartAddr)>>10)+1;        //有多少页被擦除
        FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
        //清除所有标志
        FLASHStatus=FLASH_COMPLETE;
        for(EraseCounter=0;(EraseCounter<NbrOfPage)&&(FLASHStatus==FLASH_COMPLETE);EraseCounter++)
        {               
                FLASHStatus=FLASH_ErasePage(StartAddr+(1024*EraseCounter));       
        }
        Address = StartAddr;           //写数据
        i=0;
        while((Address<EndAddr)&&(FLASHStatus==FLASH_COMPLETE))       
        {        FLASHStatus=FLASH_ProgramHalfWord(Address,p_data[i++]);
                Address=Address+2;                                                                                       
        }

        //检验数据是否出错
        Address = StartAddr;
        i=0;
  
        while((Address < EndAddr) && (MemoryProgramStatus != 0))                 //  while((Address < EndAddr) )
    {       
                if((*(u32*) Address) != p_data[i++])
                {       
                MemoryProgramStatus = 0;
                FLASH_Lock();
                return 1;
                }
                Address += 2;
                LED3_ON;
    }
        FLASH_Lock();
        return 0;

}


u8 numstor[13]= "";
u16 numstorch[13];
u8 n[13] = "15902975570";//短信号码
主函数调用:
  for(i=0;i<13;i++)
  {numstorch=(u16)n;}
   
   while(flash_write(0x8002000 ,numstorch,13))
   {}
   LED3_ON;

那个LED3就没亮过,说明Flash_write校验出错,这是为什么,求大家指导一下       


还有这是我的RCC配置:

void SystemInit (void)
{
  /* Reset the RCC clock configuration to the default reset state(for debug purpose) */
  /* Set HSION bit */
  RCC->CR |= (uint32_t)0x00000001;

  /* Reset SW, HPRE, PPRE1, PPRE2, ADCPRE and MCO bits */
#ifndef STM32F10X_CL
  RCC->CFGR &= (uint32_t)0xF8FF0000;
#else
  RCC->CFGR &= (uint32_t)0xF0FF0000;
#endif /* STM32F10X_CL */   
  
  /* Reset HSEON, CSSON and PLLON bits */
  RCC->CR &= (uint32_t)0xFEF6FFFF;

  /* Reset HSEBYP bit */
  RCC->CR &= (uint32_t)0xFFFBFFFF;

  /* Reset PLLSRC, PLLXTPRE, PLLMUL and USBPRE/OTGFSPRE bits */
  RCC->CFGR &= (uint32_t)0xFF80FFFF;

#ifdef STM32F10X_CL
  /* Reset PLL2ON and PLL3ON bits */
  RCC->CR &= (uint32_t)0xEBFFFFFF;

  /* Disable all interrupts and clear pending bits  */
  RCC->CIR = 0x00FF0000;

  /* Reset CFGR2 register */
  RCC->CFGR2 = 0x00000000;
#elif defined (STM32F10X_LD_VL) || defined (STM32F10X_MD_VL) || (defined STM32F10X_HD_VL)
  /* Disable all interrupts and clear pending bits  */
  RCC->CIR = 0x009F0000;

  /* Reset CFGR2 register */
  RCC->CFGR2 = 0x00000000;      
#else
  /* Disable all interrupts and clear pending bits  */
  RCC->CIR = 0x009F0000;
#endif /* STM32F10X_CL */
   
#if defined (STM32F10X_HD) || (defined STM32F10X_XL) || (defined STM32F10X_HD_VL)
  #ifdef DATA_IN_ExtSRAM
    SystemInit_ExtMemCtl();
  #endif /* DATA_IN_ExtSRAM */
#endif

FLASH_SetLatency(FLASH_Latency_2);  
FLASH_PrefetchBufferCmd(FLASH_PrefetchBuffer_Enable);/* Configure the Flash Latency cycles and enable prefetch buffer */
  SetSysClock();

#ifdef VECT_TAB_SRAM
  SCB->VTOR = SRAM_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal SRAM. */
#else
  SCB->VTOR = FLASH_BASE | VECT_TAB_OFFSET; /* Vector Table Relocation in Internal FLASH. */
#endif
}
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