flash_if.c

stm32 V3.0.0版本usb全速设备源码包

/******************** (C) COPYRIGHT 2009 STMicroelectronics ********************
* File Name          : flash_if.c
* Author             : MCD Application Team
* Version            : V3.0.0
* Date               : 04/06/2009
* Description        : specific media access Layer for internal flash
********************************************************************************
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE TIME.
* AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY DIRECT,
* INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING FROM THE
* CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "flash_if.h"
#include "dfu_mal.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : FLASH_If_Init
* Description    : Initializes the Media on the STM32
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
uint16_t FLASH_If_Init(void)
{
  return MAL_OK;
}

/*******************************************************************************
* Function Name  : FLASH_If_Erase
* Description    : Erase sector
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
uint16_t FLASH_If_Erase(uint32_t SectorAddress)
{
  FLASH_ErasePage(SectorAddress);
  return MAL_OK;
}

/*******************************************************************************
* Function Name  : FLASH_If_Write
* Description    : Write sectors
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
uint16_t FLASH_If_Write(uint32_t SectorAddress, uint32_t DataLength)
{
  uint32_t idx = 0;
  
  if  (DataLength & 0x3) /* Not an aligned data */
  {
    for (idx = DataLength; idx < ((DataLength & 0xFFFC) + 4); idx++)
    {
      MAL_Buffer[idx] = 0xFF;
    }
  }
  /* Data received are Word multiple */

  for (idx = 0; idx <  DataLength; idx = idx + 4)
  {
    FLASH_ProgramWord(SectorAddress, *(uint32_t *)(MAL_Buffer + idx));
    SectorAddress += 4;
  }
  return MAL_OK;
}

/*******************************************************************************
* Function Name  : FLASH_If_Read
* Description    : Read sectors
* Input          : None
* Output         : None
* Return         : buffer address pointer
*******************************************************************************/
uint8_t *FLASH_If_Read (uint32_t SectorAddress, uint32_t DataLength)
{
  return  (uint8_t*)(SectorAddress);
}

/******************* (C) COPYRIGHT 2009 STMicroelectronics *****END OF FILE****/