stm32f10x_flash.c

stm32 红外万年历

  * @note   This function can be used for all STM32F10x devices.
  * @param  Address: specifies the address to be programmed.
  * @param  Data: specifies the data to be programmed.
  * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
  *         FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. 
  */
FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data)
{
  FLASH_Status status = FLASH_COMPLETE;
  __IO uint32_t tmp = 0;

  /* Check the parameters */
  assert_param(IS_FLASH_ADDRESS(Address));

#ifdef STM32F10X_XL
  if(Address < FLASH_BANK1_END_ADDRESS - 2)
  { 
    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastBank1Operation(ProgramTimeout); 
    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new first 
        half word */
      FLASH->CR |= CR_PG_Set;
  
      *(__IO uint16_t*)Address = (uint16_t)Data;
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastOperation(ProgramTimeout);
 
      if(status == FLASH_COMPLETE)
      {
        /* if the previous operation is completed, proceed to program the new second 
        half word */
        tmp = Address + 2;

        *(__IO uint16_t*) tmp = Data >> 16;
    
        /* Wait for last operation to be completed */
        status = FLASH_WaitForLastOperation(ProgramTimeout);
        
        /* Disable the PG Bit */
        FLASH->CR &= CR_PG_Reset;
      }
      else
      {
        /* Disable the PG Bit */
        FLASH->CR &= CR_PG_Reset;
       }
    }
  }
  else if(Address == (FLASH_BANK1_END_ADDRESS - 1))
  {
    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastBank1Operation(ProgramTimeout);

    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new first 
        half word */
      FLASH->CR |= CR_PG_Set;
  
      *(__IO uint16_t*)Address = (uint16_t)Data;

      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastBank1Operation(ProgramTimeout);
      
	  /* Disable the PG Bit */
      FLASH->CR &= CR_PG_Reset;
    }
    else
    {
      /* Disable the PG Bit */
      FLASH->CR &= CR_PG_Reset;
    }

    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastBank2Operation(ProgramTimeout);

    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new second 
      half word */
      FLASH->CR2 |= CR_PG_Set;
      tmp = Address + 2;

      *(__IO uint16_t*) tmp = Data >> 16;
    
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastBank2Operation(ProgramTimeout);
        
      /* Disable the PG Bit */
      FLASH->CR2 &= CR_PG_Reset;
    }
    else
    {
      /* Disable the PG Bit */
      FLASH->CR2 &= CR_PG_Reset;
    }
  }
  else
  {
    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastBank2Operation(ProgramTimeout);

    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new first 
        half word */
      FLASH->CR2 |= CR_PG_Set;
  
      *(__IO uint16_t*)Address = (uint16_t)Data;
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastBank2Operation(ProgramTimeout);
 
      if(status == FLASH_COMPLETE)
      {
        /* if the previous operation is completed, proceed to program the new second 
        half word */
        tmp = Address + 2;

        *(__IO uint16_t*) tmp = Data >> 16;
    
        /* Wait for last operation to be completed */
        status = FLASH_WaitForLastBank2Operation(ProgramTimeout);
        
        /* Disable the PG Bit */
        FLASH->CR2 &= CR_PG_Reset;
      }
      else
      {
        /* Disable the PG Bit */
        FLASH->CR2 &= CR_PG_Reset;
      }
    }
  }
#else
  /* Wait for last operation to be completed */
  status = FLASH_WaitForLastOperation(ProgramTimeout);
  
  if(status == FLASH_COMPLETE)
  {
    /* if the previous operation is completed, proceed to program the new first 
    half word */
    FLASH->CR |= CR_PG_Set;
  
    *(__IO uint16_t*)Address = (uint16_t)Data;
    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastOperation(ProgramTimeout);
 
    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new second 
      half word */
      tmp = Address + 2;

      *(__IO uint16_t*) tmp = Data >> 16;
    
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastOperation(ProgramTimeout);
        
      /* Disable the PG Bit */
      FLASH->CR &= CR_PG_Reset;
    }
    else
    {
      /* Disable the PG Bit */
      FLASH->CR &= CR_PG_Reset;
    }
  }         
#endif /* STM32F10X_XL */
   
  /* Return the Program Status */
  return status;
}

/**
  * @brief  Programs a half word at a specified address.
  * @note   This function can be used for all STM32F10x devices.
  * @param  Address: specifies the address to be programmed.
  * @param  Data: specifies the data to be programmed.
  * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
  *         FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. 
  */
FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data)
{
  FLASH_Status status = FLASH_COMPLETE;
  /* Check the parameters */
  assert_param(IS_FLASH_ADDRESS(Address));

#ifdef STM32F10X_XL
  /* Wait for last operation to be completed */
  status = FLASH_WaitForLastOperation(ProgramTimeout);
  
  if(Address < FLASH_BANK1_END_ADDRESS)
  {
    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new data */
      FLASH->CR |= CR_PG_Set;
  
      *(__IO uint16_t*)Address = Data;
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastBank1Operation(ProgramTimeout);

      /* Disable the PG Bit */
      FLASH->CR &= CR_PG_Reset;
    }
  }
  else
  {
    if(status == FLASH_COMPLETE)
    {
      /* if the previous operation is completed, proceed to program the new data */
      FLASH->CR2 |= CR_PG_Set;
  
      *(__IO uint16_t*)Address = Data;
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastBank2Operation(ProgramTimeout);

      /* Disable the PG Bit */
      FLASH->CR2 &= CR_PG_Reset;
    }
  }
#else
  /* Wait for last operation to be completed */
  status = FLASH_WaitForLastOperation(ProgramTimeout);
  
  if(status == FLASH_COMPLETE)
  {
    /* if the previous operation is completed, proceed to program the new data */
    FLASH->CR |= CR_PG_Set;
  
    *(__IO uint16_t*)Address = Data;
    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastOperation(ProgramTimeout);
    
    /* Disable the PG Bit */
    FLASH->CR &= CR_PG_Reset;
  } 
#endif  /* STM32F10X_XL */
  
  /* Return the Program Status */
  return status;
}

/**
  * @brief  Programs a half word at a specified Option Byte Data address.
  * @note   This function can be used for all STM32F10x devices.
  * @param  Address: specifies the address to be programmed.
  *   This parameter can be 0x1FFFF804 or 0x1FFFF806. 
  * @param  Data: specifies the data to be programmed.
  * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
  *         FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. 
  */
FLASH_Status FLASH_ProgramOptionByteData(uint32_t Address, uint8_t Data)
{
  FLASH_Status status = FLASH_COMPLETE;
  /* Check the parameters */
  assert_param(IS_OB_DATA_ADDRESS(Address));
  status = FLASH_WaitForLastOperation(ProgramTimeout);

  if(status == FLASH_COMPLETE)
  {
    /* Authorize the small information block programming */
    FLASH->OPTKEYR = FLASH_KEY1;
    FLASH->OPTKEYR = FLASH_KEY2;
    /* Enables the Option Bytes Programming operation */
    FLASH->CR |= CR_OPTPG_Set; 
    *(__IO uint16_t*)Address = Data;
    
    /* Wait for last operation to be completed */
    status = FLASH_WaitForLastOperation(ProgramTimeout);
    if(status != FLASH_TIMEOUT)
    {
      /* if the program operation is completed, disable the OPTPG Bit */
      FLASH->CR &= CR_OPTPG_Reset;
    }
  }
  /* Return the Option Byte Data Program Status */
  return status;
}

/**
  * @brief  Write protects the desired pages
  * @note   This function can be used for all STM32F10x devices.
  * @param  FLASH_Pages: specifies the address of the pages to be write protected.
  *   This parameter can be:
  *     @arg For @b STM32_Low-density_devices: value between FLASH_WRProt_Pages0to3 and FLASH_WRProt_Pages28to31  
  *     @arg For @b STM32_Medium-density_devices: value between FLASH_WRProt_Pages0to3
  *       and FLASH_WRProt_Pages124to127
  *     @arg For @b STM32_High-density_devices: value between FLASH_WRProt_Pages0to1 and
  *       FLASH_WRProt_Pages60to61 or FLASH_WRProt_Pages62to255
  *     @arg For @b STM32_Connectivity_line_devices: value between FLASH_WRProt_Pages0to1 and
  *       FLASH_WRProt_Pages60to61 or FLASH_WRProt_Pages62to127    
  *     @arg For @b STM32_XL-density_devices: value between FLASH_WRProt_Pages0to1 and
  *       FLASH_WRProt_Pages60to61 or FLASH_WRProt_Pages62to511
  *     @arg FLASH_WRProt_AllPages
  * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG,
  *         FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
  */
FLASH_Status FLASH_EnableWriteProtection(uint32_t FLASH_Pages)
{
  uint16_t WRP0_Data = 0xFFFF, WRP1_Data = 0xFFFF, WRP2_Data = 0xFFFF, WRP3_Data = 0xFFFF;
  
  FLASH_Status status = FLASH_COMPLETE;
  
  /* Check the parameters */
  assert_param(IS_FLASH_WRPROT_PAGE(FLASH_Pages));
  
  FLASH_Pages = (uint32_t)(~FLASH_Pages);
  WRP0_Data = (uint16_t)(FLASH_Pages & WRP0_Mask);
  WRP1_Data = (uint16_t)((FLASH_Pages & WRP1_Mask) >> 8);
  WRP2_Data = (uint16_t)((FLASH_Pages & WRP2_Mask) >> 16);
  WRP3_Data = (uint16_t)((FLASH_Pages & WRP3_Mask) >> 24);
  
  /* Wait for last operation to be completed */
  status = FLASH_WaitForLastOperation(ProgramTimeout);
  
  if(status == FLASH_COMPLETE)
  {
    /* Authorizes the small information block programming */
    FLASH->OPTKEYR = FLASH_KEY1;
    FLASH->OPTKEYR = FLASH_KEY2;
    FLASH->CR |= CR_OPTPG_Set;
    if(WRP0_Data != 0xFF)
    {
      OB->WRP0 = WRP0_Data;
      
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastOperation(ProgramTimeout);
    }
    if((status == FLASH_COMPLETE) && (WRP1_Data != 0xFF))
    {
      OB->WRP1 = WRP1_Data;
      
      /* Wait for last operation to be completed */
      status = FLASH_WaitForLastOperation(ProgramTimeout);