自学教程：C++ ADDR_SHIFT函数代码示例

/******************************************************************************* Function Name  : FSMC_NOR_ReadHalfWord* Description    : Reads a half-word from the NOR memory. * Input          : - ReadAddr : NOR memory internal address to read from.* Output         : None* Return         : Half-word read from the NOR memory*******************************************************************************/uint16_t FSMC_NOR_ReadHalfWord(uint32_t ReadAddr){  NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);   NOR_WRITE(ADDR_SHIFT(0x002AA), 0x0055);    NOR_WRITE((Bank1_NOR2_ADDR + ReadAddr), 0x00F0 );  return (*(__IO uint16_t *)((Bank1_NOR2_ADDR + ReadAddr)));}

/******************************************************************************* Function Name  : FSMC_NOR_Reset* Description    : Returns the NOR memory to Read mode and resets the errors in*                  the NOR memory Status Register.* Input          : None* Output         : None* Return         : NOR_SUCCESS*******************************************************************************/NOR_Status FSMC_NOR_Reset(void){  NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);   NOR_WRITE(ADDR_SHIFT(0x002AA), 0x0055);   NOR_WRITE(Bank1_NOR2_ADDR, 0x00F0);   return (NOR_SUCCESS);}

/**  * @brief  Writes a half-word to the NOR memory.  *         This function returns the NOR memory status after block erase operation.    * @param  uwWriteAddress : NOR memory internal address to write to.  *         uhData : Data to write.  * @retval NOR_Status: The returned value can be: NOR_SUCCESS, NOR_ERROR  *         or NOR_TIMEOUT.  */   NOR_Status NOR_WriteHalfWord(uint32_t uwWriteAddress, uint16_t uhData){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00A0);  NOR_WRITE((NOR_BANK_ADDR + uwWriteAddress), uhData);  return (NOR_GetStatus(PROGRAM_TIMEOUT));}

/******************************************************************************* Function Name  : FSMC_NOR_WriteHalfWord* Description    : Writes a half-word to the NOR memory. * Input          : - WriteAddr : NOR memory internal address to write to.*                  - Data : Data to write. * Output         : None* Return         : NOR_Status:The returned value can be: NOR_SUCCESS, NOR_ERROR*                  or NOR_TIMEOUT*******************************************************************************/NOR_Status FSMC_NOR_WriteHalfWord(uint32_t WriteAddr, uint16_t Data){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00A0);  NOR_WRITE((Bank1_NOR2_ADDR + WriteAddr), Data);  return (FSMC_NOR_GetStatus(Program_Timeout));}

/**  * @brief  Reads a half-word from the NOR memory.   * @param  uwReadAddress : NOR memory internal address to read from.   * @retval Half-word read from the NOR memory.  */uint16_t NOR_ReadHalfWord(uint32_t uwReadAddress){  NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);   NOR_WRITE(ADDR_SHIFT(0x002AA), 0x0055);      /* Send read data command */  NOR_WRITE((NOR_BANK_ADDR + uwReadAddress), 0x00F0 );  /* Return the data read */  return (*(__IO uint16_t *)((NOR_BANK_ADDR + uwReadAddress)));}

/**  * @brief  Returns the NOR memory to Read mode and resets the errors in the NOR   *         memory Status Register.    * @param  None  * @retval NOR_SUCCESS  */NOR_Status NOR_Reset(void){  NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);   NOR_WRITE(ADDR_SHIFT(0x002AA), 0x0055);     /* Send read mode command */  NOR_WRITE(NOR_BANK_ADDR, 0x00F0);     /* Return status success operation */  return (NOR_SUCCESS);}

/***********************************************************************************************************	函 数 名: NOR_EraseSector*	功能说明: 擦除NOR Flash指定的扇区*	形    参: 扇区地址*	返 回 值: NOR_SUCCESS, NOR_ERROR, NOR_TIMEOUT**********************************************************************************************************/uint8_t NOR_EraseSector(uint32_t _uiBlockAddr){	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x0080);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE((NOR_FLASH_ADDR + _uiBlockAddr), 0x30);	return (NOR_GetStatus(BlockErase_Timeout));}

/**  * @brief  Performs a block erase operation giving its address.  *         This function returns the NOR memory status after block erase operation.    * @param  uwBlockAddress: Address of the block to erase.  * @retval NOR_Status: The returned value can be: NOR_SUCCESS, NOR_ERROR  *         or NOR_TIMEOUT.  */NOR_Status NOR_EraseBlock(uint32_t uwBlockAddress){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x0080);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE((NOR_BANK_ADDR + uwBlockAddress), 0x30);  return (NOR_GetStatus(BLOCKERASE_TIMEOUT));}

/******************************************************************************** Function Name  : FSMC_NOR_EraseBlock* Description    : Erases the specified Nor memory block.* Input          : - BlockAddr: address of the block to erase.* Output         : None* Return         : NOR_Status:The returned value can be: NOR_SUCCESS, NOR_ERROR*                  or NOR_TIMEOUT*******************************************************************************/NOR_Status FSMC_NOR_EraseBlock(uint32_t BlockAddr){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x0080);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE((Bank1_NOR2_ADDR + BlockAddr), 0x30);  return (FSMC_NOR_GetStatus(BlockErase_Timeout));}

/******************************************************************************** Function Name  : FSMC_NOR_ReadBuffer* Description    : Reads a block of data from the FSMC NOR memory.* Input          : - pBuffer : pointer to the buffer that receives the data read *                    from the NOR memory.*                  - ReadAddr : NOR memory internal address to read from.*                  - NumHalfwordToRead : number of Half word to read.* Output         : None* Return         : None*******************************************************************************/void FSMC_NOR_ReadBuffer(uint16_t* pBuffer, uint32_t ReadAddr, uint32_t NumHalfwordToRead){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE((Bank1_NOR2_ADDR + ReadAddr), 0x00F0);  for(; NumHalfwordToRead != 0x00; NumHalfwordToRead--) /* while there is data to read */  {    /* Read a Halfword from the NOR */    *pBuffer++ = *(__IO uint16_t *)((Bank1_NOR2_ADDR + ReadAddr));    ReadAddr = ReadAddr + 2;   }  }

/**  * @brief  Reads a block of data from the FMC NOR memory.  * @param  pBuffer: pointer to the buffer that receives the data read from the   *         NOR memory.  * @param  uwReadAddress: NOR memory internal address to read from.  * @param  uwBufferSize : number of Half word to read.  * @retval None  */void NOR_ReadBuffer(uint16_t* pBuffer, uint32_t uwReadAddress, uint32_t uwBufferSize){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE((NOR_BANK_ADDR + uwReadAddress), 0x00F0);  for(; uwBufferSize != 0x00; uwBufferSize--) /* while there is data to read */  {    /* Read a Halfword from the NOR */    *pBuffer++ = *(__IO uint16_t *)((NOR_BANK_ADDR + uwReadAddress));    uwReadAddress = uwReadAddress + 2;   }  }

/**  * @brief  Writes a half-word buffer to the FMC NOR memory. This function   *         must be used only with S29GL128P NOR memory.   * @param  pBuffer : pointer to buffer.    *         uwWriteAddress : NOR memory internal address from which the data   *         will be written.  *         uwBufferSize : number of Half words to write. The maximum allowed   *         value is 32 Half words (64 bytes).  * @retval NOR_Status: The returned value can be: NOR_SUCCESS, NOR_ERROR  *         or NOR_TIMEOUT.  */ NOR_Status NOR_ProgramBuffer(uint16_t* pBuffer, uint32_t uwWriteAddress, uint32_t uwBufferSize){  uint32_t lastloadedaddress = 0;  uint32_t currentaddress = 0;  uint32_t endaddress = 0;  /* Initialize variables */  currentaddress = uwWriteAddress;  endaddress = uwWriteAddress + uwBufferSize - 1;  lastloadedaddress = uwWriteAddress;  /* Issue unlock command sequence */  NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);    /* Write Buffer Load Command */  NOR_WRITE(ADDR_SHIFT(uwWriteAddress), 0x0025);  NOR_WRITE(ADDR_SHIFT(uwWriteAddress), (uwBufferSize - 1));  /* Load Data into NOR Buffer */  while(currentaddress <= endaddress)  {    /* Store last loaded address & data value (for polling) */    lastloadedaddress = currentaddress;     NOR_WRITE(ADDR_SHIFT(currentaddress), *pBuffer++);    currentaddress += 1;   }  NOR_WRITE(ADDR_SHIFT(lastloadedaddress), 0x29);    return(NOR_GetStatus(PROGRAM_TIMEOUT));}

/******************************************************************************** Function Name  : FSMC_NOR_ProgramBuffer* Description    : Writes a half-word buffer to the FSMC NOR memory. This function *                  must be used only with S29GL128P NOR memory.* Input          : - pBuffer : pointer to buffer. *                  - WriteAddr: NOR memory internal address from which the data *                    will be written.*                  - NumHalfwordToWrite: number of Half words to write.*                    The maximum allowed value is 32 Half words (64 bytes).* Output         : None* Return         : NOR_Status:The returned value can be: NOR_SUCCESS, NOR_ERROR*                  or NOR_TIMEOUT*******************************************************************************/NOR_Status FSMC_NOR_ProgramBuffer(uint16_t* pBuffer, uint32_t WriteAddr, uint32_t NumHalfwordToWrite){         uint32_t lastloadedaddress = 0x00;  uint32_t currentaddress = 0x00;  uint32_t endaddress = 0x00;  /* Initialize variables */  currentaddress = WriteAddr;  endaddress = WriteAddr + NumHalfwordToWrite - 1;  lastloadedaddress = WriteAddr;  /* Issue unlock command sequence */  NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);    /* Write Write Buffer Load Command */  NOR_WRITE(ADDR_SHIFT(WriteAddr), 0x0025);  NOR_WRITE(ADDR_SHIFT(WriteAddr), (NumHalfwordToWrite - 1));  /* Load Data into NOR Buffer */  while(currentaddress <= endaddress)  {    /* Store last loaded address & data value (for polling) */    lastloadedaddress = currentaddress;     NOR_WRITE(ADDR_SHIFT(currentaddress), *pBuffer++);    currentaddress += 1;   }  NOR_WRITE(ADDR_SHIFT(lastloadedaddress), 0x29);    return(FSMC_NOR_GetStatus(Program_Timeout));}

/******************************************************************************* Function Name  : FSMC_NOR_ReadID* Description    : Reads NOR memory's Manufacturer and Device Code.* Input          : - NOR_ID: pointer to a NOR_IDTypeDef structure which will hold*                    the Manufacturer and Device Code.* Output         : None* Return         : None*******************************************************************************/void FSMC_NOR_ReadID(NOR_IDTypeDef* NOR_ID){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x0090);  NOR_ID->Manufacturer_Code = *(__IO uint16_t *) ADDR_SHIFT(0x0000);  NOR_ID->Device_Code1 = *(__IO uint16_t *) ADDR_SHIFT(0x0001);  NOR_ID->Device_Code2 = *(__IO uint16_t *) ADDR_SHIFT(0x000E);  NOR_ID->Device_Code3 = *(__IO uint16_t *) ADDR_SHIFT(0x000F);}

/***********************************************************************************************************	函 数 名: NOR_StartEraseChip*	功能说明: 开始擦除NOR Flash整个芯片， 不等待结束*	形    参: 无*	返 回 值: 0表示成功**********************************************************************************************************/void NOR_StartEraseChip(void){	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x0080);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x0010);		NOR_GetStatus(1000);}

/***********************************************************************************************************	函 数 名: NOR_EraseChip*	功能说明: 擦除NOR Flash整个芯片*	形    参: 无*	返 回 值: 0表示成功**********************************************************************************************************/uint8_t NOR_EraseChip(void){	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x0080);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x0010);	return (NOR_GetStatus(ChipErase_Timeout));}

/**  * @brief  Erases the entire chip.  * @param  None                        * @retval NOR_Status: The returned value can be: NOR_SUCCESS, NOR_ERROR  *         or NOR_TIMEOUT  */NOR_Status NOR_EraseChip(void){  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x0080);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);  NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);  NOR_WRITE(ADDR_SHIFT(0x0555), 0x0010);  return (NOR_GetStatus(CHIPERASE_TIMEOUT));}

/***********************************************************************************************************	函 数 名: NOR_ReadID*	功能说明: 读取NOR Flash的器件ID*	形    参: 无*	返 回 值: 器件ID,32Bit, 高8bit 是Manufacturer_Code, 低24bit是器件ID**********************************************************************************************************/uint32_t NOR_ReadID(void){	uint32_t uiID;	uint8_t id1, id2, id3, id4;	NOR_WRITE(ADDR_SHIFT(0x0555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x02AA), 0x0055);	NOR_WRITE(ADDR_SHIFT(0x0555), 0x0090);	id1 = *(__IO uint16_t *) ADDR_SHIFT(0x0000);	id2 = *(__IO uint16_t *) ADDR_SHIFT(0x0001);	id3 = *(__IO uint16_t *) ADDR_SHIFT(0x000E);	id4 = *(__IO uint16_t *) ADDR_SHIFT(0x000F);	uiID = ((uint32_t)id1 << 24) | ((uint32_t)id2 << 16)  | ((uint32_t)id3 << 8) | id4;	NOR_WRITE(NOR_FLASH_ADDR, 0x00F0 );		/* 退出ID模式 */	return uiID;}

/***********************************************************************************************************	函 数 名: NOR_QuitToReadStatus*	功能说明: 复位NOR，退到读状态*	形    参: 无*	返 回 值: 无**********************************************************************************************************/static void NOR_QuitToReadStatus(void){	NOR_WRITE(ADDR_SHIFT(0x00555), 0x00AA);	NOR_WRITE(ADDR_SHIFT(0x002AA), 0x0055);	NOR_WRITE(NOR_FLASH_ADDR, 0x00F0 );}