C++ FLASH_ErasePage函数代码示例

/*******************************************************************************
* Function Name  : EE_Format
* Description    : Erases PAGE0 and PAGE1 and writes VALID_PAGE header to PAGE0
* Input          : None
* Output         : None
* Return         : Status of the last operation (Flash write or erase) done during
*                  EEPROM formating
*******************************************************************************/
FLASH_Status EE_Format(void)
{
  FLASH_Status FlashStatus = FLASH_COMPLETE;

  /* Erase Page0 */
  FlashStatus = FLASH_ErasePage(PAGE0_BASE_ADDRESS);

  /* If erase operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }

  /* Set Page0 as valid page: Write VALID_PAGE at Page0 base address */
  FlashStatus = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);

  /* If program operation was failed, a Flash error code is returned */
  if (FlashStatus != FLASH_COMPLETE)
  {
    return FlashStatus;
  }

  /* Erase Page1 */
  FlashStatus = FLASH_ErasePage(PAGE1_BASE_ADDRESS);

  /* Return Page1 erase operation status */
  return FlashStatus;
}

/*************************************************
 Function:		hw_flash_erase
 Descroption:	 
 Input: 
	1.SectorAddress
 Output: 
 Return: 	
 Other:  
*************************************************/
uint32_t hw_flash_erase(uint32_t SectorAddress)
{
	#if defined(STM32L1XX_MD) || defined(STM32L1XX_HD)|| defined(STM32L1XX_MD_PLUS)
	FLASH_ClearFlag(FLASH_FLAG_PGAERR | FLASH_FLAG_OPTVERR);
	return FLASH_ErasePage(SectorAddress);
	#else
	return FLASH_ErasePage(SectorAddress);
	#endif /* STM32L1XX_XD */
}

//================================================
static void write_mem(void)
{
	u32 addr = 0;
	u16 i = 0;
	u8 temp[4];
	u16 length = 0; 
	u32 data = 0;
	u8 crc = 0;
	FLASH_Status status = FLASH_COMPLETE;
		
	// Receive start address
	for(i=0;i<4;i++)
		temp[i] = USART_GetC();
	crc = USART_GetC();
	if(crc == (temp[0]^temp[1]^temp[2]^temp[3]))
	{
		mem_cpy(&addr,temp,4);
		USART_PutC(ACK);
		length = USART_GetC();
		length = (length<<8) | USART_GetC();
		for(i = 0;i<length;i++)
			fwBuff[i] = USART_GetC();
		crc = USART_GetC();
		// Write memmory
		FLASH_UnlockBank1();
		if(!fUpdating)
		{
			// Disable systick 
			SysTick->CTRL  &=~( SysTick_CTRL_CLKSOURCE_Msk | 
		                   SysTick_CTRL_TICKINT_Msk   | 
		                   SysTick_CTRL_ENABLE_Msk);
			status = FLASH_ErasePage(FLAG_ADDR);
			if(status == FLASH_COMPLETE)
				status = FLASH_ProgramWord(FLAG_ADDR,(u32)FLAG_UPDATING);
			fUpdating = true;
		}
		if(status == FLASH_COMPLETE)
			status = FLASH_ErasePage(addr);
		for(i = 0;i<length;i+=4)
		{
			mem_cpy(&data,&fwBuff[i],((length-i)>4?4:(length-i)));
			if(status != FLASH_COMPLETE)
				break;
			status = FLASH_ProgramWord(addr,data);			
			addr += 4;
		}
		FLASH_LockBank1();
		if(status == FLASH_COMPLETE)
			USART_PutC(ACK);
		else
			USART_PutC(NACK);
	}
	else
		USART_PutC(NACK);
}

/*******************************************************************************
* Function Name  : FLASH_If_Erase
* Description    : Erase sector
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
uint16_t FLASH_If_Erase(uint32_t SectorAddress)
{
#ifdef STM32L1XX_MD
  FLASH_ClearFlag(FLASH_FLAG_PGAERR | FLASH_FLAG_OPTVERR);
  FLASH_ErasePage(SectorAddress);
#else
  FLASH_ErasePage(SectorAddress);
#endif /* STM32L1XX_MD */
  
  return MAL_OK;
}

void Erase_All_User_id(void)
{
	uint8_t i;
	FLASH_Unlock();
	FLASH_ErasePage(USER_ID_PAGE0_ADDR_START);
	FLASH_ErasePage(USER_ID_PAGE1_ADDR_START);
	FLASH_ErasePage(USER_ID_PAGE2_ADDR_START);
	FLASH_Lock();
	for(i=1; i<96; i++)
		lock_infor.index_map[(i-1)/MAP_SIZE] &= (~(1<<((i-1)%MAP_SIZE)));
	Index_Save();
}

bool writeEEPROM(bool blink)
{
    FLASH_Status status;
    uint8_t chk = 0;
    const uint8_t *p;

    // prepare checksum/version constants
    _params.version = EEPROM_CONF_VERSION;
    _params.size = sizeof(params_t);
    _params.magic_be = 0xBE;
    _params.magic_ef = 0xEF;
    _params.chk = 0;

    // recalculate checksum before writing
    for (p = (const uint8_t *)&_params; p < ((const uint8_t *)&_params + sizeof(params_t)); p++)
        chk ^= *p;
    _params.chk = chk;

    // write it
    FLASH_Unlock();
    for (unsigned int tries = 3; tries; tries--)
    {
        FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);

        FLASH_ErasePage(FLASH_WRITE_ADDR);
        status = FLASH_ErasePage(FLASH_WRITE_ADDR + FLASH_PAGE_SIZE);
        for (unsigned int i = 0; i < sizeof(params_t) && status == FLASH_COMPLETE; i += 4)
            status = FLASH_ProgramWord(FLASH_WRITE_ADDR + i, *(uint32_t *)((char *)&_params + i));
        if (status == FLASH_COMPLETE)
            break;
    }
    FLASH_Lock();

    // Flash write failed - just die now
    if (status != FLASH_COMPLETE || !validEEPROM())
    {
        return false;
    }

    if (blink)
    {
        for (uint8_t i=0; i < 3; i++)
        {
            LED0_TOGGLE;
            delay(100);
            LED0_TOGGLE;
            delay(50);
        }
    }

    return true;
}

void writeEEPROM(uint8_t b, uint8_t updateProfile)
{
    FLASH_Status status;
    int i, tries = 3;
    uint8_t chk = 0;
    const uint8_t *p;

    // prepare checksum/version constants
    mcfg.version = EEPROM_CONF_VERSION;
    mcfg.size = sizeof(master_t);
    mcfg.magic_be = 0xBE;
    mcfg.magic_ef = 0xEF;
    mcfg.chk = 0;

    // when updateProfile = true, we copy contents of cfg to global configuration. when false, only profile number is updated, and then that profile is loaded on readEEPROM()
    if (updateProfile) {
        // copy current in-memory profile to stored configuration
        memcpy(&mcfg.profile[mcfg.current_profile], &cfg, sizeof(config_t));
    }

    // recalculate checksum before writing
    for (p = (const uint8_t *)&mcfg; p < ((const uint8_t *)&mcfg + sizeof(master_t)); p++)
        chk ^= *p;
    mcfg.chk = chk;

    // write it
    FLASH_Unlock();
    while (tries--) {
        FLASH_ClearFlag(FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);

        FLASH_ErasePage(FLASH_WRITE_ADDR);
        status = FLASH_ErasePage(FLASH_WRITE_ADDR + FLASH_PAGE_SIZE);
        for (i = 0; i < sizeof(master_t) && status == FLASH_COMPLETE; i += 4)
            status = FLASH_ProgramWord(FLASH_WRITE_ADDR + i, *(uint32_t *)((char *)&mcfg + i));
        if (status == FLASH_COMPLETE)
            break;
    }
    FLASH_Lock();

    // Flash write failed - just die now
    if (status != FLASH_COMPLETE || !validEEPROM()) {
        failureMode(10);
    }

    // re-read written data
    loadAndActivateConfig();
    if (b)
        blinkLED(15, 20, 1);
}

/**
 * Erase data on flash.
 * @note This operation is irreversible.
 * @note This operation's units is different which on many chips.
 *
 * @param addr flash address
 * @param size erase bytes size
 *
 * @return result
 */
EfErrCode ef_port_erase(uint32_t addr, size_t size) {
    EfErrCode result = EF_NO_ERR;
    FLASH_Status flash_status;
    size_t erase_pages, i;
    
    /* make sure the start address is a multiple of FLASH_ERASE_MIN_SIZE */
    EF_ASSERT(addr % ERASE_MIN_SIZE == 0);
    
    /* calculate pages */
    erase_pages = size / PAGE_SIZE;
    if (size % PAGE_SIZE != 0) {
        erase_pages++;
    }

    /* start erase */
    FLASH_Unlock();
    FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
    for (i = 0; i < erase_pages; i++) {
        flash_status = FLASH_ErasePage(addr + (PAGE_SIZE * i));
        if (flash_status != FLASH_COMPLETE) {
            result = EF_ERASE_ERR;
            break;
        }
    }
    FLASH_Lock();

    return result;
}

/***********************************************************
 * 函数名：WriteflashMPeriod
 * 描述  ：把interval_s从CPU写入Flash
 * 输入  : 无
 * 输出  : 无
 ***********************************************************/
void WriteflashMPeriod(void)
{
	FLASHStatus = FLASH_COMPLETE;
	MemoryProgramStatus = PASSED; 

	FLASH_Unlock();	//FLASH解锁
	FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);//清标志位
	NbrOfPage = (EndAddr[4] - StartAddr[4]) / FLASH_PAGE_SIZE;//页面擦除子程序
	FLASHStatus = FLASH_ErasePage(StartAddr[4] + (FLASH_PAGE_SIZE * NbrOfPage)); 
	
	FlashAddress = StartAddr[4]; 
	FLASHStatus = FLASH_ProgramWord(FlashAddress, gps_invalid);
	
	FlashAddress = FlashAddress + 4;
	FLASHStatus = FLASH_ProgramWord(FlashAddress, intervalA);
	
	FlashAddress = FlashAddress + 4;
	FLASHStatus = FLASH_ProgramWord(FlashAddress, intervalB);
	
	FlashAddress = FlashAddress + 4;
	FLASHStatus = FLASH_ProgramWord(FlashAddress, interval_num);
	
	FlashAddress = FlashAddress + 4;
//	FLASHStatus = FLASH_ProgramWord(FlashAddress, time_o);
	
	FlashAddress = FlashAddress + 4;
	FLASHStatus = FLASH_ProgramHalfWord(FlashAddress, interval_s);

	BKP_WriteBackupRegister(BKP_DR1,interval_num);
	//BKP_WriteBackupRegister(BKP_DR2,time_o);
	BKP_WriteBackupRegister(BKP_DR3,interval_s);
}

void ErasePage(uint32_t p_addr, unsigned char with_lock)
{
	FLASH_Unlock();
	FLASH_ErasePage(p_addr);
	if (with_lock)
		FLASH_Lock();
}

uint8_t PIOS_BL_HELPER_FLASH_Start()
{
	const struct pios_board_info * bdinfo = &pios_board_info_blob;
	uint32_t pageAdress = bdinfo->fw_base;
	uint8_t fail = false;
	while ((pageAdress < (bdinfo->fw_base + bdinfo->fw_size + bdinfo->desc_size))
	       && (fail == false)) {
		for (int retry = 0; retry < MAX_DEL_RETRYS; ++retry) {
			if (FLASH_ErasePage(pageAdress) == FLASH_COMPLETE) {
				fail = false;
				break;
			} else {
				fail = true;
			}
		}

#ifdef STM32F10X_HD
		pageAdress += 2048;
#elif defined (STM32F10X_MD)
		pageAdress += 1024;
#endif
	}

	return (fail == true) ? 0 : 1;
}

//----清除全部刷卡记录-----------------------------------------------------
void clear_CardID()
{
	 char DateSt[12], TimeSt[12];

	storeaddrlist.RecordCount = 0;
	storeaddrlist.CountAddrOffset = 0;
	timeoutaddrlist.RecordCount = 0;
	timeoutaddrlist.CountAddrOffset = 0;
	LastSaveTime = GetRTC(DateSt, TimeSt);///获取当前时间，秒数 //需要优化;
	//清除记录区
  	FLASH_Unlock();
  	FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR);
	FLASH_ErasePage(PLACELASTID); 
	FLASH_ErasePage(POINTOFSECTION);   
  	FLASH_Lock();
}

uint8_t FLASH_Start()
{
	uint32_t pageAdress;
	pageAdress = START_OF_USER_CODE;
	uint8_t fail = FALSE;
	while ((pageAdress < START_OF_USER_CODE + SIZE_OF_CODE + SIZE_OF_DESCRIPTION)
	       || (fail == TRUE)) {
		for (int retry = 0; retry < MAX_DEL_RETRYS; ++retry) {
			if (FLASH_ErasePage(pageAdress) == FLASH_COMPLETE) {
				fail = FALSE;
				break;
			} else {
				fail = TRUE;
			}

		}

#ifdef STM32F10X_HD
		pageAdress += 2048;
#elif defined (STM32F10X_MD)
		pageAdress += 1024;
#endif
	}

	return (fail == TRUE) ? 0 : 1;
}

WORD EE_WriteVariable(WORD offset, WORD newValue)
{
    FLASH_Status stat = FLASH_COMPLETE;

    volatile WORD *pCurrentValue =   (__IO uint16_t*) (PAGE0_BASE_ADDRESS + 2 + (offset * 2));
    WORD PageStatus0             = *((__IO uint16_t*)  PAGE0_BASE_ADDRESS);
    WORD currentValue            = *pCurrentValue;

    // first check is page is valid, and if the value did change
    if(PageStatus0 == VALID_PAGE && (currentValue == newValue)) {   // page is valid, value didn't change? Good, quit
        return FLASH_COMPLETE;
    }

    // if we got here, then either page is not valid, or the value changed
    FLASH_Unlock();
    FLASH_ClearFlag(FLASH_FLAG_BSY | FLASH_FLAG_EOP | FLASH_FLAG_PGERR | FLASH_FLAG_WRPRTERR); 

    stat = FLASH_ErasePage(PAGE0_BASE_ADDRESS);                         // erase page
    if(stat != FLASH_COMPLETE) {
        return stat;
    }
    
    stat = FLASH_ProgramHalfWord(PAGE0_BASE_ADDRESS, VALID_PAGE);       // write VALID_PAGE marker
    if(stat != FLASH_COMPLETE) {
        return stat;
    }

    stat = FLASH_ProgramHalfWord((uint32_t) pCurrentValue, newValue);   // wite new vale
    if(stat != FLASH_COMPLETE) {
        return stat;
    }

    FLASH_Lock();
    return stat;
}

uint8_t PIOS_BL_HELPER_FLASH_Start()
{
    const struct pios_board_info * bdinfo = &pios_board_info_blob;
    uint32_t pageAdress = bdinfo->fw_base;
    uint8_t fail = FALSE;
    while ((pageAdress < (bdinfo->fw_base + bdinfo->fw_size + bdinfo->desc_size))
            || (fail == TRUE)) {
        for (int retry = 0; retry < MAX_DEL_RETRYS; ++retry) {
            if (FLASH_ErasePage(pageAdress) == FLASH_COMPLETE) {
                fail = FALSE;
                break;
            } else {
                fail = TRUE;
            }

        }

#ifdef STM32F10X_HD
        pageAdress += 2048;
#else /* everything else */
        pageAdress += 1024;
#endif
    }

    return (fail == TRUE) ? 0 : 1;
}