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openblt/Target/Demo/ARMCM0_STM32F0_Discovery_ST.../Boot/lib/STM32F0xx_HAL_Driver/Src/stm32f0xx_hal_flash_ex.c

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/**
******************************************************************************
* @file stm32f0xx_hal_flash_ex.c
* @author MCD Application Team
* @brief Extended FLASH HAL module driver.
*
* This file provides firmware functions to manage the following
* functionalities of the FLASH peripheral:
* + Extended Initialization/de-initialization functions
* + Extended I/O operation functions
* + Extended Peripheral Control functions
*
@verbatim
==============================================================================
##### Flash peripheral extended features #####
==============================================================================
##### How to use this driver #####
==============================================================================
[..] This driver provides functions to configure and program the FLASH memory
of all STM32F0xxx devices. It includes
(++) Set/Reset the write protection
(++) Program the user Option Bytes
(++) Get the Read protection Level
@endverbatim
******************************************************************************
* @attention
*
* <h2><center>&copy; COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
*
* Redistribution and use in source and binary forms, with or without modification,
* are permitted provided that the following conditions are met:
* 1. Redistributions of source code must retain the above copyright notice,
* this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* 3. Neither the name of STMicroelectronics nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*
******************************************************************************
*/
/* Includes ------------------------------------------------------------------*/
#include "stm32f0xx_hal.h"
/** @addtogroup STM32F0xx_HAL_Driver
* @{
*/
#ifdef HAL_FLASH_MODULE_ENABLED
/** @addtogroup FLASH
* @{
*/
/** @addtogroup FLASH_Private_Variables
* @{
*/
/* Variables used for Erase pages under interruption*/
extern FLASH_ProcessTypeDef pFlash;
/**
* @}
*/
/**
* @}
*/
/** @defgroup FLASHEx FLASHEx
* @brief FLASH HAL Extension module driver
* @{
*/
/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/** @defgroup FLASHEx_Private_Constants FLASHEx Private Constants
* @{
*/
#define FLASH_POSITION_IWDGSW_BIT 8U
#define FLASH_POSITION_OB_USERDATA0_BIT 16U
#define FLASH_POSITION_OB_USERDATA1_BIT 24U
/**
* @}
*/
/* Private macro -------------------------------------------------------------*/
/** @defgroup FLASHEx_Private_Macros FLASHEx Private Macros
* @{
*/
/**
* @}
*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/** @defgroup FLASHEx_Private_Functions FLASHEx Private Functions
* @{
*/
/* Erase operations */
static void FLASH_MassErase(void);
void FLASH_PageErase(uint32_t PageAddress);
/* Option bytes control */
static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WriteProtectPage);
static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage);
static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t ReadProtectLevel);
static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t UserConfig);
static HAL_StatusTypeDef FLASH_OB_ProgramData(uint32_t Address, uint8_t Data);
static uint32_t FLASH_OB_GetWRP(void);
static uint32_t FLASH_OB_GetRDP(void);
static uint8_t FLASH_OB_GetUser(void);
/**
* @}
*/
/* Exported functions ---------------------------------------------------------*/
/** @defgroup FLASHEx_Exported_Functions FLASHEx Exported Functions
* @{
*/
/** @defgroup FLASHEx_Exported_Functions_Group1 FLASHEx Memory Erasing functions
* @brief FLASH Memory Erasing functions
*
@verbatim
==============================================================================
##### FLASH Erasing Programming functions #####
==============================================================================
[..] The FLASH Memory Erasing functions, includes the following functions:
(+) @ref HAL_FLASHEx_Erase: return only when erase has been done
(+) @ref HAL_FLASHEx_Erase_IT: end of erase is done when @ref HAL_FLASH_EndOfOperationCallback
is called with parameter 0xFFFFFFFF
[..] Any operation of erase should follow these steps:
(#) Call the @ref HAL_FLASH_Unlock() function to enable the flash control register and
program memory access.
(#) Call the desired function to erase page.
(#) Call the @ref HAL_FLASH_Lock() to disable the flash program memory access
(recommended to protect the FLASH memory against possible unwanted operation).
@endverbatim
* @{
*/
/**
* @brief Perform a mass erase or erase the specified FLASH memory pages
* @note To correctly run this function, the @ref HAL_FLASH_Unlock() function
* must be called before.
* Call the @ref HAL_FLASH_Lock() to disable the flash memory access
* (recommended to protect the FLASH memory against possible unwanted operation)
* @param[in] pEraseInit pointer to an FLASH_EraseInitTypeDef structure that
* contains the configuration information for the erasing.
*
* @param[out] PageError pointer to variable that
* contains the configuration information on faulty page in case of error
* (0xFFFFFFFF means that all the pages have been correctly erased)
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_Erase(FLASH_EraseInitTypeDef *pEraseInit, uint32_t *PageError)
{
HAL_StatusTypeDef status = HAL_ERROR;
uint32_t address = 0U;
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Check the parameters */
assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
{
/* Mass Erase requested for Bank1 */
/* Wait for last operation to be completed */
if (FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
{
/*Mass erase to be done*/
FLASH_MassErase();
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the erase operation is completed, disable the MER Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
}
}
else
{
/* Page Erase is requested */
/* Check the parameters */
assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
assert_param(IS_FLASH_NB_PAGES(pEraseInit->PageAddress, pEraseInit->NbPages));
/* Page Erase requested on address located on bank1 */
/* Wait for last operation to be completed */
if (FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE) == HAL_OK)
{
/*Initialization of PageError variable*/
*PageError = 0xFFFFFFFFU;
/* Erase page by page to be done*/
for(address = pEraseInit->PageAddress;
address < ((pEraseInit->NbPages * FLASH_PAGE_SIZE) + pEraseInit->PageAddress);
address += FLASH_PAGE_SIZE)
{
FLASH_PageErase(address);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the erase operation is completed, disable the PER Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
if (status != HAL_OK)
{
/* In case of error, stop erase procedure and return the faulty address */
*PageError = address;
break;
}
}
}
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Perform a mass erase or erase the specified FLASH memory pages with interrupt enabled
* @note To correctly run this function, the @ref HAL_FLASH_Unlock() function
* must be called before.
* Call the @ref HAL_FLASH_Lock() to disable the flash memory access
* (recommended to protect the FLASH memory against possible unwanted operation)
* @param pEraseInit pointer to an FLASH_EraseInitTypeDef structure that
* contains the configuration information for the erasing.
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_Erase_IT(FLASH_EraseInitTypeDef *pEraseInit)
{
HAL_StatusTypeDef status = HAL_OK;
/* Process Locked */
__HAL_LOCK(&pFlash);
/* If procedure already ongoing, reject the next one */
if (pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
{
return HAL_ERROR;
}
/* Check the parameters */
assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase));
/* Enable End of FLASH Operation and Error source interrupts */
__HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
if (pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE)
{
/*Mass erase to be done*/
pFlash.ProcedureOnGoing = FLASH_PROC_MASSERASE;
FLASH_MassErase();
}
else
{
/* Erase by page to be done*/
/* Check the parameters */
assert_param(IS_FLASH_PROGRAM_ADDRESS(pEraseInit->PageAddress));
assert_param(IS_FLASH_NB_PAGES(pEraseInit->PageAddress, pEraseInit->NbPages));
pFlash.ProcedureOnGoing = FLASH_PROC_PAGEERASE;
pFlash.DataRemaining = pEraseInit->NbPages;
pFlash.Address = pEraseInit->PageAddress;
/*Erase 1st page and wait for IT*/
FLASH_PageErase(pEraseInit->PageAddress);
}
return status;
}
/**
* @}
*/
/** @defgroup FLASHEx_Exported_Functions_Group2 Option Bytes Programming functions
* @brief Option Bytes Programming functions
*
@verbatim
==============================================================================
##### Option Bytes Programming functions #####
==============================================================================
[..]
This subsection provides a set of functions allowing to control the FLASH
option bytes operations.
@endverbatim
* @{
*/
/**
* @brief Erases the FLASH option bytes.
* @note This functions erases all option bytes except the Read protection (RDP).
* The function @ref HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function @ref HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
* The function @ref HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
* (system reset will occur)
* @retval HAL status
*/
HAL_StatusTypeDef HAL_FLASHEx_OBErase(void)
{
uint8_t rdptmp = OB_RDP_LEVEL_0;
HAL_StatusTypeDef status = HAL_ERROR;
/* Get the actual read protection Option Byte value */
rdptmp = FLASH_OB_GetRDP();
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* If the previous operation is completed, proceed to erase the option bytes */
SET_BIT(FLASH->CR, FLASH_CR_OPTER);
SET_BIT(FLASH->CR, FLASH_CR_STRT);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the erase operation is completed, disable the OPTER Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTER);
if(status == HAL_OK)
{
/* Restore the last read protection Option Byte value */
status = FLASH_OB_RDP_LevelConfig(rdptmp);
}
}
/* Return the erase status */
return status;
}
/**
* @brief Program option bytes
* @note The function @ref HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function @ref HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
* The function @ref HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
* (system reset will occur)
*
* @param pOBInit pointer to an FLASH_OBInitStruct structure that
* contains the configuration information for the programming.
*
* @retval HAL_StatusTypeDef HAL Status
*/
HAL_StatusTypeDef HAL_FLASHEx_OBProgram(FLASH_OBProgramInitTypeDef *pOBInit)
{
HAL_StatusTypeDef status = HAL_ERROR;
/* Process Locked */
__HAL_LOCK(&pFlash);
/* Check the parameters */
assert_param(IS_OPTIONBYTE(pOBInit->OptionType));
/* Write protection configuration */
if((pOBInit->OptionType & OPTIONBYTE_WRP) == OPTIONBYTE_WRP)
{
assert_param(IS_WRPSTATE(pOBInit->WRPState));
if (pOBInit->WRPState == OB_WRPSTATE_ENABLE)
{
/* Enable of Write protection on the selected page */
status = FLASH_OB_EnableWRP(pOBInit->WRPPage);
}
else
{
/* Disable of Write protection on the selected page */
status = FLASH_OB_DisableWRP(pOBInit->WRPPage);
}
if (status != HAL_OK)
{
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
}
/* Read protection configuration */
if((pOBInit->OptionType & OPTIONBYTE_RDP) == OPTIONBYTE_RDP)
{
status = FLASH_OB_RDP_LevelConfig(pOBInit->RDPLevel);
if (status != HAL_OK)
{
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
}
/* USER configuration */
if((pOBInit->OptionType & OPTIONBYTE_USER) == OPTIONBYTE_USER)
{
status = FLASH_OB_UserConfig(pOBInit->USERConfig);
if (status != HAL_OK)
{
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
}
/* DATA configuration*/
if((pOBInit->OptionType & OPTIONBYTE_DATA) == OPTIONBYTE_DATA)
{
status = FLASH_OB_ProgramData(pOBInit->DATAAddress, pOBInit->DATAData);
if (status != HAL_OK)
{
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
}
/* Process Unlocked */
__HAL_UNLOCK(&pFlash);
return status;
}
/**
* @brief Get the Option byte configuration
* @param pOBInit pointer to an FLASH_OBInitStruct structure that
* contains the configuration information for the programming.
*
* @retval None
*/
void HAL_FLASHEx_OBGetConfig(FLASH_OBProgramInitTypeDef *pOBInit)
{
pOBInit->OptionType = OPTIONBYTE_WRP | OPTIONBYTE_RDP | OPTIONBYTE_USER;
/*Get WRP*/
pOBInit->WRPPage = FLASH_OB_GetWRP();
/*Get RDP Level*/
pOBInit->RDPLevel = FLASH_OB_GetRDP();
/*Get USER*/
pOBInit->USERConfig = FLASH_OB_GetUser();
}
/**
* @brief Get the Option byte user data
* @param DATAAdress Address of the option byte DATA
* This parameter can be one of the following values:
* @arg @ref OB_DATA_ADDRESS_DATA0
* @arg @ref OB_DATA_ADDRESS_DATA1
* @retval Value programmed in USER data
*/
uint32_t HAL_FLASHEx_OBGetUserData(uint32_t DATAAdress)
{
uint32_t value = 0U;
if (DATAAdress == OB_DATA_ADDRESS_DATA0)
{
/* Get value programmed in OB USER Data0 */
value = READ_BIT(FLASH->OBR, FLASH_OBR_DATA0) >> FLASH_POSITION_OB_USERDATA0_BIT;
}
else
{
/* Get value programmed in OB USER Data1 */
value = READ_BIT(FLASH->OBR, FLASH_OBR_DATA1) >> FLASH_POSITION_OB_USERDATA1_BIT;
}
return value;
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup FLASHEx_Private_Functions
* @{
*/
/**
* @brief Full erase of FLASH memory Bank
*
* @retval None
*/
static void FLASH_MassErase(void)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Only bank1 will be erased*/
SET_BIT(FLASH->CR, FLASH_CR_MER);
SET_BIT(FLASH->CR, FLASH_CR_STRT);
}
/**
* @brief Enable the write protection of the desired pages
* @note An option byte erase is done automatically in this function.
* @note When the memory read protection level is selected (RDP level = 1),
* it is not possible to program or erase the flash page i if
* debug features are connected or boot code is executed in RAM, even if nWRPi = 1
*
* @param WriteProtectPage specifies the page(s) to be write protected.
* The value of this parameter depend on device used within the same series
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WriteProtectPage)
{
HAL_StatusTypeDef status = HAL_OK;
uint16_t WRP0_Data = 0xFFFFU;
#if defined(OB_WRP1_WRP1)
uint16_t WRP1_Data = 0xFFFFU;
#endif /* OB_WRP1_WRP1 */
#if defined(OB_WRP2_WRP2)
uint16_t WRP2_Data = 0xFFFFU;
#endif /* OB_WRP2_WRP2 */
#if defined(OB_WRP3_WRP3)
uint16_t WRP3_Data = 0xFFFFU;
#endif /* OB_WRP3_WRP3 */
/* Check the parameters */
assert_param(IS_OB_WRP(WriteProtectPage));
/* Get current write protected pages and the new pages to be protected ******/
WriteProtectPage = (uint32_t)(~((~FLASH_OB_GetWRP()) | WriteProtectPage));
#if defined(OB_WRP_PAGES0TO15MASK)
WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
#elif defined(OB_WRP_PAGES0TO31MASK)
WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
#endif /* OB_WRP_PAGES0TO31MASK */
#if defined(OB_WRP_PAGES16TO31MASK)
WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8U);
#elif defined(OB_WRP_PAGES32TO63MASK)
WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8U);
#endif /* OB_WRP_PAGES32TO63MASK */
#if defined(OB_WRP_PAGES32TO47MASK)
WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16U);
#endif /* OB_WRP_PAGES32TO47MASK */
#if defined(OB_WRP_PAGES48TO63MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO63MASK) >> 24U);
#elif defined(OB_WRP_PAGES48TO127MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24U);
#endif /* OB_WRP_PAGES48TO63MASK */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* To be able to write again option byte, need to perform a option byte erase */
status = HAL_FLASHEx_OBErase();
if (status == HAL_OK)
{
/* Enable write protection */
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
#if defined(OB_WRP0_WRP0)
if(WRP0_Data != 0xFFU)
{
OB->WRP0 &= WRP0_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP0_WRP0 */
#if defined(OB_WRP1_WRP1)
if((status == HAL_OK) && (WRP1_Data != 0xFFU))
{
OB->WRP1 &= WRP1_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP1_WRP1 */
#if defined(OB_WRP2_WRP2)
if((status == HAL_OK) && (WRP2_Data != 0xFFU))
{
OB->WRP2 &= WRP2_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP2_WRP2 */
#if defined(OB_WRP3_WRP3)
if((status == HAL_OK) && (WRP3_Data != 0xFFU))
{
OB->WRP3 &= WRP3_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP3_WRP3 */
/* if the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
}
return status;
}
/**
* @brief Disable the write protection of the desired pages
* @note An option byte erase is done automatically in this function.
* @note When the memory read protection level is selected (RDP level = 1),
* it is not possible to program or erase the flash page i if
* debug features are connected or boot code is executed in RAM, even if nWRPi = 1
*
* @param WriteProtectPage specifies the page(s) to be write unprotected.
* The value of this parameter depend on device used within the same series
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WriteProtectPage)
{
HAL_StatusTypeDef status = HAL_OK;
uint16_t WRP0_Data = 0xFFFFU;
#if defined(OB_WRP1_WRP1)
uint16_t WRP1_Data = 0xFFFFU;
#endif /* OB_WRP1_WRP1 */
#if defined(OB_WRP2_WRP2)
uint16_t WRP2_Data = 0xFFFFU;
#endif /* OB_WRP2_WRP2 */
#if defined(OB_WRP3_WRP3)
uint16_t WRP3_Data = 0xFFFFU;
#endif /* OB_WRP3_WRP3 */
/* Check the parameters */
assert_param(IS_OB_WRP(WriteProtectPage));
/* Get current write protected pages and the new pages to be unprotected ******/
WriteProtectPage = (FLASH_OB_GetWRP() | WriteProtectPage);
#if defined(OB_WRP_PAGES0TO15MASK)
WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO15MASK);
#elif defined(OB_WRP_PAGES0TO31MASK)
WRP0_Data = (uint16_t)(WriteProtectPage & OB_WRP_PAGES0TO31MASK);
#endif /* OB_WRP_PAGES0TO31MASK */
#if defined(OB_WRP_PAGES16TO31MASK)
WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES16TO31MASK) >> 8U);
#elif defined(OB_WRP_PAGES32TO63MASK)
WRP1_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO63MASK) >> 8U);
#endif /* OB_WRP_PAGES32TO63MASK */
#if defined(OB_WRP_PAGES32TO47MASK)
WRP2_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES32TO47MASK) >> 16U);
#endif /* OB_WRP_PAGES32TO47MASK */
#if defined(OB_WRP_PAGES48TO63MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO63MASK) >> 24U);
#elif defined(OB_WRP_PAGES48TO127MASK)
WRP3_Data = (uint16_t)((WriteProtectPage & OB_WRP_PAGES48TO127MASK) >> 24U);
#endif /* OB_WRP_PAGES48TO63MASK */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* To be able to write again option byte, need to perform a option byte erase */
status = HAL_FLASHEx_OBErase();
if (status == HAL_OK)
{
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
#if defined(OB_WRP0_WRP0)
if(WRP0_Data != 0xFFU)
{
OB->WRP0 |= WRP0_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP0_WRP0 */
#if defined(OB_WRP1_WRP1)
if((status == HAL_OK) && (WRP1_Data != 0xFFU))
{
OB->WRP1 |= WRP1_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP1_WRP1 */
#if defined(OB_WRP2_WRP2)
if((status == HAL_OK) && (WRP2_Data != 0xFFU))
{
OB->WRP2 |= WRP2_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP2_WRP2 */
#if defined(OB_WRP3_WRP3)
if((status == HAL_OK) && (WRP3_Data != 0xFFU))
{
OB->WRP3 |= WRP3_Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
}
#endif /* OB_WRP3_WRP3 */
/* if the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
}
return status;
}
/**
* @brief Set the read protection level.
* @param ReadProtectLevel specifies the read protection level.
* This parameter can be one of the following values:
* @arg @ref OB_RDP_LEVEL_0 No protection
* @arg @ref OB_RDP_LEVEL_1 Read protection of the memory
* @arg @ref OB_RDP_LEVEL_2 Full chip protection
* @note Warning: When enabling OB_RDP level 2 it's no more possible to go back to level 1 or 0
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t ReadProtectLevel)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_OB_RDP_LEVEL(ReadProtectLevel));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* If the previous operation is completed, proceed to erase the option bytes */
SET_BIT(FLASH->CR, FLASH_CR_OPTER);
SET_BIT(FLASH->CR, FLASH_CR_STRT);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the erase operation is completed, disable the OPTER Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTER);
if(status == HAL_OK)
{
/* Enable the Option Bytes Programming operation */
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
WRITE_REG(OB->RDP, ReadProtectLevel);
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* if the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
}
return status;
}
/**
* @brief Program the FLASH User Option Byte.
* @note Programming of the OB should be performed only after an erase (otherwise PGERR occurs)
* @param UserConfig The FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1), RST_STDBY(Bit2), nBOOT1(Bit4),
* VDDA_Analog_Monitoring(Bit5) and SRAM_Parity_Enable(Bit6).
* For few devices, following option bytes are available: nBOOT0(Bit3) & BOOT_SEL(Bit7).
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t UserConfig)
{
HAL_StatusTypeDef status = HAL_OK;
/* Check the parameters */
assert_param(IS_OB_IWDG_SOURCE((UserConfig&OB_IWDG_SW)));
assert_param(IS_OB_STOP_SOURCE((UserConfig&OB_STOP_NO_RST)));
assert_param(IS_OB_STDBY_SOURCE((UserConfig&OB_STDBY_NO_RST)));
assert_param(IS_OB_BOOT1((UserConfig&OB_BOOT1_SET)));
assert_param(IS_OB_VDDA_ANALOG((UserConfig&OB_VDDA_ANALOG_ON)));
assert_param(IS_OB_SRAM_PARITY((UserConfig&OB_SRAM_PARITY_RESET)));
#if defined(FLASH_OBR_BOOT_SEL)
assert_param(IS_OB_BOOT_SEL((UserConfig&OB_BOOT_SEL_SET)));
assert_param(IS_OB_BOOT0((UserConfig&OB_BOOT0_SET)));
#endif /* FLASH_OBR_BOOT_SEL */
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Enable the Option Bytes Programming operation */
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
#if defined(FLASH_OBR_BOOT_SEL)
OB->USER = UserConfig;
#else
OB->USER = (UserConfig | 0x88U);
#endif
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* if the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
return status;
}
/**
* @brief Programs a half word at a specified Option Byte Data address.
* @note The function @ref HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
* The function @ref HAL_FLASH_OB_Unlock() should be called before to unlock the options bytes
* The function @ref HAL_FLASH_OB_Launch() should be called after to force the reload of the options bytes
* (system reset will occur)
* Programming of the OB should be performed only after an erase (otherwise PGERR occurs)
* @param Address specifies the address to be programmed.
* This parameter can be 0x1FFFF804 or 0x1FFFF806.
* @param Data specifies the data to be programmed.
* @retval HAL status
*/
static HAL_StatusTypeDef FLASH_OB_ProgramData(uint32_t Address, uint8_t Data)
{
HAL_StatusTypeDef status = HAL_ERROR;
/* Check the parameters */
assert_param(IS_OB_DATA_ADDRESS(Address));
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
if(status == HAL_OK)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Enables the Option Bytes Programming operation */
SET_BIT(FLASH->CR, FLASH_CR_OPTPG);
*(__IO uint16_t*)Address = Data;
/* Wait for last operation to be completed */
status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE);
/* If the program operation is completed, disable the OPTPG Bit */
CLEAR_BIT(FLASH->CR, FLASH_CR_OPTPG);
}
/* Return the Option Byte Data Program Status */
return status;
}
/**
* @brief Return the FLASH Write Protection Option Bytes value.
* @retval The FLASH Write Protection Option Bytes value
*/
static uint32_t FLASH_OB_GetWRP(void)
{
/* Return the FLASH write protection Register value */
return (uint32_t)(READ_REG(FLASH->WRPR));
}
/**
* @brief Returns the FLASH Read Protection level.
* @retval FLASH RDP level
* This parameter can be one of the following values:
* @arg @ref OB_RDP_LEVEL_0 No protection
* @arg @ref OB_RDP_LEVEL_1 Read protection of the memory
* @arg @ref OB_RDP_LEVEL_2 Full chip protection
*/
static uint32_t FLASH_OB_GetRDP(void)
{
uint32_t tmp_reg;
/* Read RDP level bits */
tmp_reg = READ_BIT(FLASH->OBR, (FLASH_OBR_RDPRT1 | FLASH_OBR_RDPRT2));
if (tmp_reg == 0U)
{
return OB_RDP_LEVEL_0;
}
else if ((tmp_reg & FLASH_OBR_RDPRT2) == FLASH_OBR_RDPRT2)
{
return OB_RDP_LEVEL_2;
}
else
{
return OB_RDP_LEVEL_1;
}
}
/**
* @brief Return the FLASH User Option Byte value.
* @retval The FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1), RST_STDBY(Bit2), nBOOT1(Bit4),
* VDDA_Analog_Monitoring(Bit5) and SRAM_Parity_Enable(Bit6).
* For few devices, following option bytes are available: nBOOT0(Bit3) & BOOT_SEL(Bit7).
*/
static uint8_t FLASH_OB_GetUser(void)
{
/* Return the User Option Byte */
return (uint8_t)((READ_REG(FLASH->OBR) & FLASH_OBR_USER) >> FLASH_POSITION_IWDGSW_BIT);
}
/**
* @}
*/
/**
* @}
*/
/** @addtogroup FLASH
* @{
*/
/** @addtogroup FLASH_Private_Functions
* @{
*/
/**
* @brief Erase the specified FLASH memory page
* @param PageAddress FLASH page to erase
* The value of this parameter depend on device used within the same series
*
* @retval None
*/
void FLASH_PageErase(uint32_t PageAddress)
{
/* Clean the error context */
pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
/* Proceed to erase the page */
SET_BIT(FLASH->CR, FLASH_CR_PER);
WRITE_REG(FLASH->AR, PageAddress);
SET_BIT(FLASH->CR, FLASH_CR_STRT);
}
/**
* @}
*/
/**
* @}
*/
#endif /* HAL_FLASH_MODULE_ENABLED */
/**
* @}
*/
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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