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/**
******************************************************************************
* @file USB_Host/FWupgrade_Standalone/Src/flash_if.c
* @author MCD Application Team
* @brief This file provides all the flash layer functions.
******************************************************************************
* @attention
*
* Copyright (c) 2017 STMicroelectronics.
* All rights reserved.
*
* This software is licensed under terms that can be found in the LICENSE file
* in the root directory of this software component.
* If no LICENSE file comes with this software, it is provided AS-IS.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "main.h"
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macros ------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
uint32_t FirstSector = 0;
uint32_t NbOfSectors = 0;
uint32_t SectorError = 0;
uint32_t OB_RDP_LEVEL;
/* Private function prototypes -----------------------------------------------*/
static uint32_t FLASH_If_GetSectorNumber(uint32_t Address);
static FLASH_OBProgramInitTypeDef FLASH_OBProgramInitStruct;
static FLASH_EraseInitTypeDef FLASH_EraseInitStruct;
/* Private functions ---------------------------------------------------------*/
/**
* @brief Unlocks the Flash to enable the flash control register access.
* @param None
* @retval None
*/
void FLASH_If_FlashUnlock(void)
{
HAL_FLASH_Unlock();
}
/**
* @brief Gets Flash readout protection status.
* @param None
* @retval ReadOut protection status
*/
FlagStatus FLASH_If_ReadOutProtectionStatus(void)
{
FlagStatus readoutstatus = RESET;
FLASH_OBProgramInitStruct.RDPLevel = OB_RDP_LEVEL;
HAL_FLASHEx_OBGetConfig(&FLASH_OBProgramInitStruct);
if(OB_RDP_LEVEL == SET)
{
readoutstatus = SET;
}
else
{
readoutstatus = RESET;
}
return readoutstatus;
}
/**
* @brief Erases the required FLASH Sectors.
* @param Address: Start address for erasing data
* @retval 0: Erase sectors done with success
* 1: Erase error
*/
uint32_t FLASH_If_EraseSectors(uint32_t Address)
{
/* Erase the user Flash area
(area defined by APPLICATION_ADDRESS and USER_FLASH_LAST_PAGE_ADDRESS) ****/
if(Address <= (uint32_t) USER_FLASH_LAST_PAGE_ADDRESS)
{
/* Get the 1st sector to erase */
FirstSector = FLASH_If_GetSectorNumber(Address);
/* Get the number of sector to erase from 1st sector */
NbOfSectors = FLASH_If_GetSectorNumber(USER_FLASH_LAST_PAGE_ADDRESS) - FirstSector + 1;
/* Erase the first bank */
FLASH_EraseInitStruct.TypeErase = FLASH_TYPEERASE_SECTORS;
FLASH_EraseInitStruct.Sector = FirstSector;
FLASH_EraseInitStruct.NbSectors = NbOfSectors;
FLASH_EraseInitStruct.Banks = FLASH_BANK_1;
FLASH_EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
if(HAL_FLASHEx_Erase(&FLASH_EraseInitStruct, &SectorError) != HAL_OK)
return (1);
/* Erase the second bank */
FLASH_EraseInitStruct.TypeErase = FLASH_TYPEERASE_MASSERASE;
FLASH_EraseInitStruct.Banks = FLASH_BANK_2;
FLASH_EraseInitStruct.VoltageRange = FLASH_VOLTAGE_RANGE_3;
if(HAL_FLASHEx_Erase(&FLASH_EraseInitStruct, &SectorError) != HAL_OK)
return (1);
}
else
{
return (1);
}
return (0);
}
/**
* @brief Writes a data buffer in flash (data are 32-bit aligned).
* @note After writing data buffer, the flash content is checked.
* @param Address: Start address for writing data buffer
* @param Data: Pointer on data buffer
* @retval 0: Data successfully written to Flash memory
* 1: Error occurred while writing data in Flash memory
*/
uint32_t FLASH_If_Write(uint32_t Address, uint32_t Data)
{
/* Program the user Flash area word by word
(area defined by FLASH_USER_START_ADDR and APPLICATION_ADDRESS) ***********/
if(Address <= (uint32_t) USER_FLASH_LAST_PAGE_ADDRESS)
{
if(HAL_FLASH_Program(FLASH_TYPEPROGRAM_WORD, Address, Data)!= HAL_OK)
return (1);
}
else
{
return (1);
}
return (0);
}
/**
* @brief Returns the Flash sector Number of the address
* @param None
* @retval The Flash sector Number of the address
*/
static uint32_t FLASH_If_GetSectorNumber(uint32_t Address)
{
uint32_t sector = 0;
if((Address < ADDR_FLASH_SECTOR_1) && (Address >= ADDR_FLASH_SECTOR_0))
{
sector = FLASH_SECTOR_0;
}
else if((Address < ADDR_FLASH_SECTOR_2) && (Address >= ADDR_FLASH_SECTOR_1))
{
sector = FLASH_SECTOR_1;
}
else if((Address < ADDR_FLASH_SECTOR_3) && (Address >= ADDR_FLASH_SECTOR_2))
{
sector = FLASH_SECTOR_2;
}
else if((Address < ADDR_FLASH_SECTOR_4) && (Address >= ADDR_FLASH_SECTOR_3))
{
sector = FLASH_SECTOR_3;
}
else if((Address < ADDR_FLASH_SECTOR_5) && (Address >= ADDR_FLASH_SECTOR_4))
{
sector = FLASH_SECTOR_4;
}
else if((Address < ADDR_FLASH_SECTOR_6) && (Address >= ADDR_FLASH_SECTOR_5))
{
sector = FLASH_SECTOR_5;
}
else if((Address < ADDR_FLASH_SECTOR_7) && (Address >= ADDR_FLASH_SECTOR_6))
{
sector = FLASH_SECTOR_6;
}
else if((Address < ADDR_FLASH_SECTOR_8) && (Address >= ADDR_FLASH_SECTOR_7))
{
sector = FLASH_SECTOR_7;
}
else if((Address < ADDR_FLASH_SECTOR_9) && (Address >= ADDR_FLASH_SECTOR_8))
{
sector = FLASH_SECTOR_8;
}
else if((Address < ADDR_FLASH_SECTOR_10) && (Address >= ADDR_FLASH_SECTOR_9))
{
sector = FLASH_SECTOR_9;
}
else if((Address < ADDR_FLASH_SECTOR_11) && (Address >= ADDR_FLASH_SECTOR_10))
{
sector = FLASH_SECTOR_10;
}
else if((Address < ADDR_FLASH_SECTOR_12) && (Address >= ADDR_FLASH_SECTOR_11))
{
sector = FLASH_SECTOR_11;
}
else if((Address < ADDR_FLASH_SECTOR_13) && (Address >= ADDR_FLASH_SECTOR_12))
{
sector = FLASH_SECTOR_12;
}
else if((Address < ADDR_FLASH_SECTOR_14) && (Address >= ADDR_FLASH_SECTOR_13))
{
sector = FLASH_SECTOR_13;
}
else if((Address < ADDR_FLASH_SECTOR_15) && (Address >= ADDR_FLASH_SECTOR_14))
{
sector = FLASH_SECTOR_14;
}
else if((Address < ADDR_FLASH_SECTOR_16) && (Address >= ADDR_FLASH_SECTOR_15))
{
sector = FLASH_SECTOR_15;
}
else if((Address < ADDR_FLASH_SECTOR_17) && (Address >= ADDR_FLASH_SECTOR_16))
{
sector = FLASH_SECTOR_16;
}
else if((Address < ADDR_FLASH_SECTOR_18) && (Address >= ADDR_FLASH_SECTOR_17))
{
sector = FLASH_SECTOR_17;
}
else if((Address < ADDR_FLASH_SECTOR_19) && (Address >= ADDR_FLASH_SECTOR_18))
{
sector = FLASH_SECTOR_18;
}
else if((Address < ADDR_FLASH_SECTOR_20) && (Address >= ADDR_FLASH_SECTOR_19))
{
sector = FLASH_SECTOR_19;
}
else if((Address < ADDR_FLASH_SECTOR_21) && (Address >= ADDR_FLASH_SECTOR_20))
{
sector = FLASH_SECTOR_20;
}
else if((Address < ADDR_FLASH_SECTOR_22) && (Address >= ADDR_FLASH_SECTOR_21))
{
sector = FLASH_SECTOR_21;
}
else if((Address < ADDR_FLASH_SECTOR_23) && (Address >= ADDR_FLASH_SECTOR_22))
{
sector = FLASH_SECTOR_22;
}
else
{
sector = FLASH_SECTOR_23;
}
return sector;
}
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