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/** ****************************************************************************** * @file stm32f4xx_hal_flash_ex.c * @author MCD Application Team * @version V1.2.0 * @date 26-December-2014 * @brief Extended FLASH HAL module driver. * This file provides firmware functions to manage the following * functionalities of the FLASH extension peripheral: * + Extended programming operations functions * @verbatim ============================================================================== ##### Flash Extension features ##### ============================================================================== [..] Comparing to other previous devices, the FLASH interface for STM32F427xx/437xx and STM32F429xx/439xx devices contains the following additional features (+) Capacity up to 2 Mbyte with dual bank architecture supporting read-while-write capability (RWW) (+) Dual bank memory organization (+) PCROP protection for all banks ##### How to use this driver ##### ============================================================================== [..] This driver provides functions to configure and program the FLASH memory of all STM32F427xx/437xx andSTM32F429xx/439xx devices. It includes (#) FLASH Memory Erase functions: (++) Lock and Unlock the FLASH interface using HAL_FLASH_Unlock() and HAL_FLASH_Lock() functions (++) Erase function: Erase sector, erase all sectors (++) There are two modes of erase : (+++) Polling Mode using HAL_FLASHEx_Erase() (+++) Interrupt Mode using HAL_FLASHEx_Erase_IT() (#) Option Bytes Programming functions: Use HAL_FLASHEx_OBProgram() to : (++) Set/Reset the write protection (++) Set the Read protection Level (++) Set the BOR level (++) Program the user Option Bytes (#) Advanced Option Bytes Programming functions: Use HAL_FLASHEx_AdvOBProgram() to : (++) Extended space (bank 2) erase function (++) Full FLASH space (2 Mo) erase (bank 1 and bank 2) (++) Dual Boot activation (++) Write protection configuration for bank 2 (++) PCROP protection configuration and control for both banks @endverbatim ****************************************************************************** * @attention * * <h2><center>© COPYRIGHT(c) 2014 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 "stm32f4xx_hal.h" /** @addtogroup STM32F4xx_HAL_Driver * @{ */ /** @defgroup FLASHEx FLASHEx * @brief FLASH HAL Extension module driver * @{ */ #ifdef HAL_FLASH_MODULE_ENABLED /* Private typedef -----------------------------------------------------------*/ /* Private define ------------------------------------------------------------*/ /** @addtogroup FLASHEx_Private_Constants * @{ */ #define SECTOR_MASK ((uint32_t)0xFFFFFF07) #define FLASH_TIMEOUT_VALUE ((uint32_t)50000)/* 50 s */ /** * @} */ /* Private macro -------------------------------------------------------------*/ /* Private variables ---------------------------------------------------------*/ /** @addtogroup FLASHEx_Private_Variables * @{ */ extern FLASH_ProcessTypeDef pFlash; /** * @} */ /* Private function prototypes -----------------------------------------------*/ /** @addtogroup FLASHEx_Private_Functions * @{ */ /* Option bytes control */ static void FLASH_MassErase(uint8_t VoltageRange, uint32_t Banks); static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WRPSector, uint32_t Banks); static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WRPSector, uint32_t Banks); static HAL_StatusTypeDef FLASH_OB_RDP_LevelConfig(uint8_t Level); static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t Iwdg, uint8_t Stop, uint8_t Stdby); static HAL_StatusTypeDef FLASH_OB_BOR_LevelConfig(uint8_t Level); static uint8_t FLASH_OB_GetUser(void); static uint16_t FLASH_OB_GetWRP(void); static FlagStatus FLASH_OB_GetRDP(void); static uint8_t FLASH_OB_GetBOR(void); #if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) static HAL_StatusTypeDef FLASH_OB_EnablePCROP(uint32_t Sector); static HAL_StatusTypeDef FLASH_OB_DisablePCROP(uint32_t Sector); #endif /* STM32F401xC || STM32F401xE || STM32F411xE */ #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) static HAL_StatusTypeDef FLASH_OB_EnablePCROP(uint32_t SectorBank1, uint32_t SectorBank2, uint32_t Banks); static HAL_StatusTypeDef FLASH_OB_DisablePCROP(uint32_t SectorBank1, uint32_t SectorBank2, uint32_t Banks); static HAL_StatusTypeDef FLASH_OB_BootConfig(uint8_t BootConfig); #endif /* STM32F427xx || STM32F437xx || STM32F429xx|| STM32F439xx */ extern HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout); /** * @} */ /* Exported functions --------------------------------------------------------*/ /** @defgroup FLASHEx_Exported_Functions FLASHEx Exported Functions * @{ */ /** @defgroup FLASHEx_Exported_Functions_Group1 Extended IO operation functions * @brief Extended IO operation functions * @verbatim =============================================================================== ##### Extended programming operation functions ##### =============================================================================== [..] This subsection provides a set of functions allowing to manage the Extension FLASH programming operations Operations. @endverbatim * @{ */ /** * @brief Perform a mass erase or erase the specified FLASH memory sectors * @param[in] pEraseInit: pointer to an FLASH_EraseInitTypeDef structure that * contains the configuration information for the erasing. * * @param[out] SectorError: pointer to variable that * contains the configuration information on faulty sector in case of error * (0xFFFFFFFF means that all the sectors have been correctly erased) * * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASHEx_Erase(FLASH_EraseInitTypeDef *pEraseInit, uint32_t *SectorError) { HAL_StatusTypeDef status = HAL_ERROR; uint32_t index = 0; /* Process Locked */ __HAL_LOCK(&pFlash); /* Check the parameters */ assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { /*Initialization of SectorError variable*/ *SectorError = 0xFFFFFFFF; if(pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE) { /*Mass erase to be done*/ FLASH_MassErase((uint8_t) pEraseInit->VoltageRange, pEraseInit->Banks); /* 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 */ FLASH->CR &= (~FLASH_MER_BIT); } else { /* Check the parameters */ assert_param(IS_FLASH_NBSECTORS(pEraseInit->NbSectors + pEraseInit->Sector)); /* Erase by sector by sector to be done*/ for(index = pEraseInit->Sector; index < (pEraseInit->NbSectors + pEraseInit->Sector); index++) { FLASH_Erase_Sector(index, (uint8_t) pEraseInit->VoltageRange); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); /* If the erase operation is completed, disable the SER Bit */ FLASH->CR &= (~FLASH_CR_SER); FLASH->CR &= SECTOR_MASK; if(status != HAL_OK) { /* In case of error, stop erase procedure and return the faulty sector*/ *SectorError = index; break; } } } } /* Process Unlocked */ __HAL_UNLOCK(&pFlash); return status; } /** * @brief Perform a mass erase or erase the specified FLASH memory sectors with interrupt enabled * @param pEraseInit: pointer to an FLASH_EraseInitTypeDef structure that * contains the configuration information for the erasing. * * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASHEx_Erase_IT(FLASH_EraseInitTypeDef *pEraseInit) { HAL_StatusTypeDef status = HAL_OK; /* Process Locked */ __HAL_LOCK(&pFlash); /* Check the parameters */ assert_param(IS_FLASH_TYPEERASE(pEraseInit->TypeErase)); /* Enable End of FLASH Operation interrupt */ __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP); /* Enable Error source interrupt */ __HAL_FLASH_ENABLE_IT(FLASH_IT_ERR); /* Clear pending flags (if any) */ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_OPERR | FLASH_FLAG_WRPERR |\ FLASH_FLAG_PGAERR | FLASH_FLAG_PGPERR| FLASH_FLAG_PGSERR); if(pEraseInit->TypeErase == FLASH_TYPEERASE_MASSERASE) { /*Mass erase to be done*/ pFlash.ProcedureOnGoing = FLASH_PROC_MASSERASE; pFlash.Bank = pEraseInit->Banks; FLASH_MassErase((uint8_t) pEraseInit->VoltageRange, pEraseInit->Banks); } else { /* Erase by sector to be done*/ /* Check the parameters */ assert_param(IS_FLASH_NBSECTORS(pEraseInit->NbSectors + pEraseInit->Sector)); pFlash.ProcedureOnGoing = FLASH_PROC_SECTERASE; pFlash.NbSectorsToErase = pEraseInit->NbSectors; pFlash.Sector = pEraseInit->Sector; pFlash.VoltageForErase = (uint8_t)pEraseInit->VoltageRange; /*Erase 1st sector and wait for IT*/ FLASH_Erase_Sector(pEraseInit->Sector, pEraseInit->VoltageRange); } return status; } /** * @brief Program option bytes * @param pOBInit: pointer to an FLASH_OBInitStruct structure that * contains the configuration information for the programming. * * @retval 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 Sector*/ status = FLASH_OB_EnableWRP(pOBInit->WRPSector, pOBInit->Banks); } else { /*Disable of Write protection on the selected Sector*/ status = FLASH_OB_DisableWRP(pOBInit->WRPSector, pOBInit->Banks); } } /*Read protection configuration*/ if((pOBInit->OptionType & OPTIONBYTE_RDP) == OPTIONBYTE_RDP) { status = FLASH_OB_RDP_LevelConfig(pOBInit->RDPLevel); } /*USER configuration*/ if((pOBInit->OptionType & OPTIONBYTE_USER) == OPTIONBYTE_USER) { status = FLASH_OB_UserConfig(pOBInit->USERConfig&OB_IWDG_SW, pOBInit->USERConfig&OB_STOP_NO_RST, pOBInit->USERConfig&OB_STDBY_NO_RST); } /*BOR Level configuration*/ if((pOBInit->OptionType & OPTIONBYTE_BOR) == OPTIONBYTE_BOR) { status = FLASH_OB_BOR_LevelConfig(pOBInit->BORLevel); } /* 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 | OPTIONBYTE_BOR; /*Get WRP*/ pOBInit->WRPSector = FLASH_OB_GetWRP(); /*Get RDP Level*/ pOBInit->RDPLevel = FLASH_OB_GetRDP(); /*Get USER*/ pOBInit->USERConfig = FLASH_OB_GetUser(); /*Get BOR Level*/ pOBInit->BORLevel = FLASH_OB_GetBOR(); } #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) ||\ defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) /** * @brief Program option bytes * @param pAdvOBInit: pointer to an FLASH_AdvOBProgramInitTypeDef structure that * contains the configuration information for the programming. * * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASHEx_AdvOBProgram (FLASH_AdvOBProgramInitTypeDef *pAdvOBInit) { HAL_StatusTypeDef status = HAL_ERROR; /* Check the parameters */ assert_param(IS_OBEX(pAdvOBInit->OptionType)); /*Program PCROP option byte*/ if(((pAdvOBInit->OptionType) & OPTIONBYTE_PCROP) == OPTIONBYTE_PCROP) { /* Check the parameters */ assert_param(IS_PCROPSTATE(pAdvOBInit->PCROPState)); if((pAdvOBInit->PCROPState) == OB_PCROP_STATE_ENABLE) { /*Enable of Write protection on the selected Sector*/ #if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) status = FLASH_OB_EnablePCROP(pAdvOBInit->Sectors); #else /* STM32F427xx || STM32F437xx || STM32F429xx|| STM32F439xx */ status = FLASH_OB_EnablePCROP(pAdvOBInit->SectorsBank1, pAdvOBInit->SectorsBank2, pAdvOBInit->Banks); #endif /* STM32F401xC || STM32F401xE || STM32F411xE */ } else { /*Disable of Write protection on the selected Sector*/ #if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) status = FLASH_OB_DisablePCROP(pAdvOBInit->Sectors); #else /* STM32F427xx || STM32F437xx || STM32F429xx|| STM32F439xx */ status = FLASH_OB_DisablePCROP(pAdvOBInit->SectorsBank1, pAdvOBInit->SectorsBank2, pAdvOBInit->Banks); #endif /* STM32F401xC || STM32F401xE || STM32F411xE */ } } #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) /*Program BOOT config option byte*/ if(((pAdvOBInit->OptionType) & OPTIONBYTE_BOOTCONFIG) == OPTIONBYTE_BOOTCONFIG) { status = FLASH_OB_BootConfig(pAdvOBInit->BootConfig); } #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */ return status; } /** * @brief Get the OBEX byte configuration * @param pAdvOBInit: pointer to an FLASH_AdvOBProgramInitTypeDef structure that * contains the configuration information for the programming. * * @retval None */ void HAL_FLASHEx_AdvOBGetConfig(FLASH_AdvOBProgramInitTypeDef *pAdvOBInit) { #if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) /*Get Sector*/ pAdvOBInit->Sectors = (*(__IO uint16_t *)(OPTCR_BYTE2_ADDRESS)); #else /* STM32F427xx || STM32F437xx || STM32F429xx|| STM32F439xx */ /*Get Sector for Bank1*/ pAdvOBInit->SectorsBank1 = (*(__IO uint16_t *)(OPTCR_BYTE2_ADDRESS)); /*Get Sector for Bank2*/ pAdvOBInit->SectorsBank2 = (*(__IO uint16_t *)(OPTCR1_BYTE2_ADDRESS)); /*Get Boot config OB*/ pAdvOBInit->BootConfig = *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS; #endif /* STM32F401xC || STM32F401xE || STM32F411xE */ } /** * @brief Select the Protection Mode * * @note After PCROP activated Option Byte modification NOT POSSIBLE! excepted * Global Read Out Protection modification (from level1 to level0) * @note Once SPRMOD bit is active unprotection of a protected sector is not possible * @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag * @note This function can be used only for STM32F427xx/STM32F429xx/STM32F437xx/STM32F439xx/STM32F401xx devices. * * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASHEx_OB_SelectPCROP(void) { uint8_t optiontmp = 0xFF; /* Mask SPRMOD bit */ optiontmp = (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE3_ADDRESS) & (uint8_t)0x7F); /* Update Option Byte */ *(__IO uint8_t *)OPTCR_BYTE3_ADDRESS = (uint8_t)(OB_PCROP_SELECTED | optiontmp); return HAL_OK; } /** * @brief Deselect the Protection Mode * * @note After PCROP activated Option Byte modification NOT POSSIBLE! excepted * Global Read Out Protection modification (from level1 to level0) * @note Once SPRMOD bit is active unprotection of a protected sector is not possible * @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag * @note This function can be used only for STM32F427xx/STM32F429xx/STM32F437xx/STM32F439xx/STM32F401xx devices. * * @retval HAL Status */ HAL_StatusTypeDef HAL_FLASHEx_OB_DeSelectPCROP(void) { uint8_t optiontmp = 0xFF; /* Mask SPRMOD bit */ optiontmp = (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE3_ADDRESS) & (uint8_t)0x7F); /* Update Option Byte */ *(__IO uint8_t *)OPTCR_BYTE3_ADDRESS = (uint8_t)(OB_PCROP_DESELECTED | optiontmp); return HAL_OK; } #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx || STM32F401xC || STM32F401xE || STM32F411xE */ #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) /** * @brief Returns the FLASH Write Protection Option Bytes value for Bank 2 * @note This function can be used only for STM32F427X and STM32F429X devices. * @retval The FLASH Write Protection Option Bytes value */ uint16_t HAL_FLASHEx_OB_GetBank2WRP(void) { /* Return the FLASH write protection Register value */ return (*(__IO uint16_t *)(OPTCR1_BYTE2_ADDRESS)); } #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */ /** * @} */ #if defined(STM32F427xx) || defined(STM32F437xx) || defined(STM32F429xx)|| defined(STM32F439xx) /** * @brief Full erase of FLASH memory sectors * @param VoltageRange: The device voltage range which defines the erase parallelism. * This parameter can be one of the following values: * @arg FLASH_VOLTAGE_RANGE_1: when the device voltage range is 1.8V to 2.1V, * the operation will be done by byte (8-bit) * @arg FLASH_VOLTAGE_RANGE_2: when the device voltage range is 2.1V to 2.7V, * the operation will be done by half word (16-bit) * @arg FLASH_VOLTAGE_RANGE_3: when the device voltage range is 2.7V to 3.6V, * the operation will be done by word (32-bit) * @arg FLASH_VOLTAGE_RANGE_4: when the device voltage range is 2.7V to 3.6V + External Vpp, * the operation will be done by double word (64-bit) * * @param Banks: Banks to be erased * This parameter can be one of the following values: * @arg FLASH_BANK_1: Bank1 to be erased * @arg FLASH_BANK_2: Bank2 to be erased * @arg FLASH_BANK_BOTH: Bank1 and Bank2 to be erased * * @retval HAL Status */ static void FLASH_MassErase(uint8_t VoltageRange, uint32_t Banks) { uint32_t tmp_psize = 0; /* Check the parameters */ assert_param(IS_VOLTAGERANGE(VoltageRange)); assert_param(IS_FLASH_BANK(Banks)); /* if the previous operation is completed, proceed to erase all sectors */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= tmp_psize; if(Banks == FLASH_BANK_BOTH) { /* bank1 & bank2 will be erased*/ FLASH->CR |= FLASH_MER_BIT; } else if(Banks == FLASH_BANK_1) { /*Only bank1 will be erased*/ FLASH->CR |= FLASH_CR_MER1; } else { /*Only bank2 will be erased*/ FLASH->CR |= FLASH_CR_MER2; } FLASH->CR |= FLASH_CR_STRT; } /** * @brief Erase the specified FLASH memory sector * @param Sector: FLASH sector to erase * The value of this parameter depend on device used within the same series * @param VoltageRange: The device voltage range which defines the erase parallelism. * This parameter can be one of the following values: * @arg FLASH_VOLTAGE_RANGE_1: when the device voltage range is 1.8V to 2.1V, * the operation will be done by byte (8-bit) * @arg FLASH_VOLTAGE_RANGE_2: when the device voltage range is 2.1V to 2.7V, * the operation will be done by half word (16-bit) * @arg FLASH_VOLTAGE_RANGE_3: when the device voltage range is 2.7V to 3.6V, * the operation will be done by word (32-bit) * @arg FLASH_VOLTAGE_RANGE_4: when the device voltage range is 2.7V to 3.6V + External Vpp, * the operation will be done by double word (64-bit) * * @retval None */ void FLASH_Erase_Sector(uint32_t Sector, uint8_t VoltageRange) { uint32_t tmp_psize = 0; /* Check the parameters */ assert_param(IS_FLASH_SECTOR(Sector)); assert_param(IS_VOLTAGERANGE(VoltageRange)); if(VoltageRange == FLASH_VOLTAGE_RANGE_1) { tmp_psize = FLASH_PSIZE_BYTE; } else if(VoltageRange == FLASH_VOLTAGE_RANGE_2) { tmp_psize = FLASH_PSIZE_HALF_WORD; } else if(VoltageRange == FLASH_VOLTAGE_RANGE_3) { tmp_psize = FLASH_PSIZE_WORD; } else { tmp_psize = FLASH_PSIZE_DOUBLE_WORD; } /* Need to add offset of 4 when sector higher than FLASH_SECTOR_11 */ if(Sector > FLASH_SECTOR_11) { Sector += 4; } /* If the previous operation is completed, proceed to erase the sector */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= tmp_psize; FLASH->CR &= SECTOR_MASK; FLASH->CR |= FLASH_CR_SER | (Sector << POSITION_VAL(FLASH_CR_SNB)); FLASH->CR |= FLASH_CR_STRT; } /** * @brief Enable the write protection of the desired bank1 or bank 2 sectors * * @note When the memory read protection level is selected (RDP level = 1), * it is not possible to program or erase the flash sector i if CortexM4 * debug features are connected or boot code is executed in RAM, even if nWRPi = 1 * @note Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1). * * @param WRPSector: specifies the sector(s) to be write protected. * This parameter can be one of the following values: * @arg WRPSector: A value between OB_WRP_SECTOR_0 and OB_WRP_SECTOR_23 * @arg OB_WRP_SECTOR_All * @note BANK2 starts from OB_WRP_SECTOR_12 * * @param Banks: Enable write protection on all the sectors for the specific bank * This parameter can be one of the following values: * @arg FLASH_BANK_1: WRP on all sectors of bank1 * @arg FLASH_BANK_2: WRP on all sectors of bank2 * @arg FLASH_BANK_BOTH: WRP on all sectors of bank1 & bank2 * * @retval HAL FLASH State */ static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WRPSector, uint32_t Banks) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_WRP_SECTOR(WRPSector)); assert_param(IS_FLASH_BANK(Banks)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { if(((WRPSector == OB_WRP_SECTOR_All) && ((Banks == FLASH_BANK_1) || (Banks == FLASH_BANK_BOTH))) || (WRPSector < OB_WRP_SECTOR_12)) { if(WRPSector == OB_WRP_SECTOR_All) { /*Write protection on all sector of BANK1*/ *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~(WRPSector>>12)); } else { /*Write protection done on sectors of BANK1*/ *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~WRPSector); } } else { /*Write protection done on sectors of BANK2*/ *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS &= (~(WRPSector>>12)); } /*Write protection on all sector of BANK2*/ if((WRPSector == OB_WRP_SECTOR_All) && (Banks == FLASH_BANK_BOTH)) { /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS &= (~(WRPSector>>12)); } } } return status; } /** * @brief Disable the write protection of the desired bank1 or bank 2 sectors * * @note When the memory read protection level is selected (RDP level = 1), * it is not possible to program or erase the flash sector i if CortexM4 * debug features are connected or boot code is executed in RAM, even if nWRPi = 1 * @note Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1). * * @param WRPSector: specifies the sector(s) to be write protected. * This parameter can be one of the following values: * @arg WRPSector: A value between OB_WRP_SECTOR_0 and OB_WRP_SECTOR_23 * @arg OB_WRP_Sector_All * @note BANK2 starts from OB_WRP_SECTOR_12 * * @param Banks: Disable write protection on all the sectors for the specific bank * This parameter can be one of the following values: * @arg FLASH_BANK_1: Bank1 to be erased * @arg FLASH_BANK_2: Bank2 to be erased * @arg FLASH_BANK_BOTH: Bank1 and Bank2 to be erased * * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WRPSector, uint32_t Banks) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_WRP_SECTOR(WRPSector)); assert_param(IS_FLASH_BANK(Banks)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { if(((WRPSector == OB_WRP_SECTOR_All) && ((Banks == FLASH_BANK_1) || (Banks == FLASH_BANK_BOTH))) || (WRPSector < OB_WRP_SECTOR_12)) { if(WRPSector == OB_WRP_SECTOR_All) { /*Write protection on all sector of BANK1*/ *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)(WRPSector>>12); } else { /*Write protection done on sectors of BANK1*/ *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)WRPSector; } } else { /*Write protection done on sectors of BANK2*/ *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS |= (uint16_t)(WRPSector>>12); } /*Write protection on all sector of BANK2*/ if((WRPSector == OB_WRP_SECTOR_All) && (Banks == FLASH_BANK_BOTH)) { /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS |= (uint16_t)(WRPSector>>12); } } } return status; } /** * @brief Configure the Dual Bank Boot. * * @note This function can be used only for STM32F42xxx/43xxx devices. * * @param BootConfig specifies the Dual Bank Boot Option byte. * This parameter can be one of the following values: * @arg OB_Dual_BootEnabled: Dual Bank Boot Enable * @arg OB_Dual_BootDisabled: Dual Bank Boot Disabled * @retval None */ static HAL_StatusTypeDef FLASH_OB_BootConfig(uint8_t BootConfig) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_BOOT(BootConfig)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { /* Set Dual Bank Boot */ *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS &= (~FLASH_OPTCR_BFB2); *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS |= BootConfig; } return status; } /** * @brief Enable the read/write protection (PCROP) of the desired * sectors of Bank 1 and/or Bank 2. * @note This function can be used only for STM32F42xxx/43xxx devices. * @param SectorBank1 Specifies the sector(s) to be read/write protected or unprotected for bank1. * This parameter can be one of the following values: * @arg OB_PCROP: A value between OB_PCROP_SECTOR_0 and OB_PCROP_SECTOR_11 * @arg OB_PCROP_SECTOR__All * @param SectorBank2 Specifies the sector(s) to be read/write protected or unprotected for bank2. * This parameter can be one of the following values: * @arg OB_PCROP: A value between OB_PCROP_SECTOR_12 and OB_PCROP_SECTOR_23 * @arg OB_PCROP_SECTOR__All * @param Banks Enable PCROP protection on all the sectors for the specific bank * This parameter can be one of the following values: * @arg FLASH_BANK_1: WRP on all sectors of bank1 * @arg FLASH_BANK_2: WRP on all sectors of bank2 * @arg FLASH_BANK_BOTH: WRP on all sectors of bank1 & bank2 * * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_EnablePCROP(uint32_t SectorBank1, uint32_t SectorBank2, uint32_t Banks) { HAL_StatusTypeDef status = HAL_OK; assert_param(IS_FLASH_BANK(Banks)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { if((Banks == FLASH_BANK_1) || (Banks == FLASH_BANK_BOTH)) { assert_param(IS_OB_PCROP(SectorBank1)); /*Write protection done on sectors of BANK1*/ *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)SectorBank1; } else { assert_param(IS_OB_PCROP(SectorBank2)); /*Write protection done on sectors of BANK2*/ *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS |= (uint16_t)SectorBank2; } /*Write protection on all sector of BANK2*/ if(Banks == FLASH_BANK_BOTH) { assert_param(IS_OB_PCROP(SectorBank2)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { /*Write protection done on sectors of BANK2*/ *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS |= (uint16_t)SectorBank2; } } } return status; } /** * @brief Disable the read/write protection (PCROP) of the desired * sectors of Bank 1 and/or Bank 2. * @note This function can be used only for STM32F42xxx/43xxx devices. * @param SectorBank1 specifies the sector(s) to be read/write protected or unprotected for bank1. * This parameter can be one of the following values: * @arg OB_PCROP: A value between OB_PCROP_SECTOR_0 and OB_PCROP_SECTOR_11 * @arg OB_PCROP_SECTOR__All * @param SectorBank2 Specifies the sector(s) to be read/write protected or unprotected for bank2. * This parameter can be one of the following values: * @arg OB_PCROP: A value between OB_PCROP_SECTOR_12 and OB_PCROP_SECTOR_23 * @arg OB_PCROP_SECTOR__All * @param Banks Disable PCROP protection on all the sectors for the specific bank * This parameter can be one of the following values: * @arg FLASH_BANK_1: WRP on all sectors of bank1 * @arg FLASH_BANK_2: WRP on all sectors of bank2 * @arg FLASH_BANK_BOTH: WRP on all sectors of bank1 & bank2 * * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_DisablePCROP(uint32_t SectorBank1, uint32_t SectorBank2, uint32_t Banks) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_FLASH_BANK(Banks)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { if((Banks == FLASH_BANK_1) || (Banks == FLASH_BANK_BOTH)) { assert_param(IS_OB_PCROP(SectorBank1)); /*Write protection done on sectors of BANK1*/ *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~SectorBank1); } else { /*Write protection done on sectors of BANK2*/ assert_param(IS_OB_PCROP(SectorBank2)); *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS &= (~SectorBank2); } /*Write protection on all sector of BANK2*/ if(Banks == FLASH_BANK_BOTH) { assert_param(IS_OB_PCROP(SectorBank2)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { /*Write protection done on sectors of BANK2*/ *(__IO uint16_t*)OPTCR1_BYTE2_ADDRESS &= (~SectorBank2); } } } return status; } #endif /* STM32F427xx || STM32F437xx || STM32F429xx || STM32F439xx */ #if defined(STM32F405xx) || defined(STM32F415xx) || defined(STM32F407xx)|| defined(STM32F417xx) ||\ defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) /** * @brief Mass erase of FLASH memory * @param VoltageRange: The device voltage range which defines the erase parallelism. * This parameter can be one of the following values: * @arg FLASH_VOLTAGE_RANGE_1: when the device voltage range is 1.8V to 2.1V, * the operation will be done by byte (8-bit) * @arg FLASH_VOLTAGE_RANGE_2: when the device voltage range is 2.1V to 2.7V, * the operation will be done by half word (16-bit) * @arg FLASH_VOLTAGE_RANGE_3: when the device voltage range is 2.7V to 3.6V, * the operation will be done by word (32-bit) * @arg FLASH_VOLTAGE_RANGE_4: when the device voltage range is 2.7V to 3.6V + External Vpp, * the operation will be done by double word (64-bit) * * @param Banks: Banks to be erased * This parameter can be one of the following values: * @arg FLASH_BANK_1: Bank1 to be erased * * @retval None */ static void FLASH_MassErase(uint8_t VoltageRange, uint32_t Banks) { uint32_t tmp_psize = 0; /* Check the parameters */ assert_param(IS_VOLTAGERANGE(VoltageRange)); assert_param(IS_FLASH_BANK(Banks)); /* If the previous operation is completed, proceed to erase all sectors */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= tmp_psize; FLASH->CR |= FLASH_CR_MER; FLASH->CR |= FLASH_CR_STRT; } /** * @brief Erase the specified FLASH memory sector * @param Sector: FLASH sector to erase * The value of this parameter depend on device used within the same series * @param VoltageRange: The device voltage range which defines the erase parallelism. * This parameter can be one of the following values: * @arg FLASH_VOLTAGE_RANGE_1: when the device voltage range is 1.8V to 2.1V, * the operation will be done by byte (8-bit) * @arg FLASH_VOLTAGE_RANGE_2: when the device voltage range is 2.1V to 2.7V, * the operation will be done by half word (16-bit) * @arg FLASH_VOLTAGE_RANGE_3: when the device voltage range is 2.7V to 3.6V, * the operation will be done by word (32-bit) * @arg FLASH_VOLTAGE_RANGE_4: when the device voltage range is 2.7V to 3.6V + External Vpp, * the operation will be done by double word (64-bit) * * @retval None */ void FLASH_Erase_Sector(uint32_t Sector, uint8_t VoltageRange) { uint32_t tmp_psize = 0; /* Check the parameters */ assert_param(IS_FLASH_SECTOR(Sector)); assert_param(IS_VOLTAGERANGE(VoltageRange)); if(VoltageRange == FLASH_VOLTAGE_RANGE_1) { tmp_psize = FLASH_PSIZE_BYTE; } else if(VoltageRange == FLASH_VOLTAGE_RANGE_2) { tmp_psize = FLASH_PSIZE_HALF_WORD; } else if(VoltageRange == FLASH_VOLTAGE_RANGE_3) { tmp_psize = FLASH_PSIZE_WORD; } else { tmp_psize = FLASH_PSIZE_DOUBLE_WORD; } /* If the previous operation is completed, proceed to erase the sector */ FLASH->CR &= CR_PSIZE_MASK; FLASH->CR |= tmp_psize; FLASH->CR &= SECTOR_MASK; FLASH->CR |= FLASH_CR_SER | (Sector << POSITION_VAL(FLASH_CR_SNB)); FLASH->CR |= FLASH_CR_STRT; } /** * @brief Enable the write protection of the desired bank 1 sectors * * @note When the memory read protection level is selected (RDP level = 1), * it is not possible to program or erase the flash sector i if CortexM4 * debug features are connected or boot code is executed in RAM, even if nWRPi = 1 * @note Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1). * * @param WRPSector: specifies the sector(s) to be write protected. * The value of this parameter depend on device used within the same series * * @param Banks: Enable write protection on all the sectors for the specific bank * This parameter can be one of the following values: * @arg FLASH_BANK_1: WRP on all sectors of bank1 * * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_EnableWRP(uint32_t WRPSector, uint32_t Banks) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_WRP_SECTOR(WRPSector)); assert_param(IS_FLASH_BANK(Banks)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~WRPSector); } return status; } /** * @brief Disable the write protection of the desired bank 1 sectors * * @note When the memory read protection level is selected (RDP level = 1), * it is not possible to program or erase the flash sector i if CortexM4 * debug features are connected or boot code is executed in RAM, even if nWRPi = 1 * @note Active value of nWRPi bits is inverted when PCROP mode is active (SPRMOD =1). * * @param WRPSector: specifies the sector(s) to be write protected. * The value of this parameter depend on device used within the same series * * @param Banks: Enable write protection on all the sectors for the specific bank * This parameter can be one of the following values: * @arg FLASH_BANK_1: WRP on all sectors of bank1 * * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_DisableWRP(uint32_t WRPSector, uint32_t Banks) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_WRP_SECTOR(WRPSector)); assert_param(IS_FLASH_BANK(Banks)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)WRPSector; } return status; } #endif /* STM32F405xx || STM32F415xx || STM32F407xx || STM32F417xx || STM32F401xC || STM32F401xE || STM32F411xE */ #if defined(STM32F401xC) || defined(STM32F401xE) || defined(STM32F411xE) /** * @brief Enable the read/write protection (PCROP) of the desired sectors. * @note This function can be used only for STM32F401xx devices. * @param Sector specifies the sector(s) to be read/write protected or unprotected. * This parameter can be one of the following values: * @arg OB_PCROP: A value between OB_PCROP_Sector0 and OB_PCROP_Sector5 * @arg OB_PCROP_Sector_All * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_EnablePCROP(uint32_t Sector) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_PCROP(Sector)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS |= (uint16_t)Sector; } return status; } /** * @brief Disable the read/write protection (PCROP) of the desired sectors. * @note This function can be used only for STM32F401xx devices. * @param Sector specifies the sector(s) to be read/write protected or unprotected. * This parameter can be one of the following values: * @arg OB_PCROP: A value between OB_PCROP_Sector0 and OB_PCROP_Sector5 * @arg OB_PCROP_Sector_All * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_DisablePCROP(uint32_t Sector) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_PCROP(Sector)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint16_t*)OPTCR_BYTE2_ADDRESS &= (~Sector); } return status; } #endif /* STM32F401xC || STM32F401xE || STM32F411xE */ /** * @brief Set the read protection level. * @param Level: specifies the read protection level. * This parameter can be one of the following values: * @arg OB_RDP_LEVEL_0: No protection * @arg OB_RDP_LEVEL_1: Read protection of the memory * @arg 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 Level) { HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_RDP_LEVEL(Level)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { *(__IO uint8_t*)OPTCR_BYTE1_ADDRESS = Level; } return status; } /** * @brief Program the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY. * @param Iwdg: Selects the IWDG mode * This parameter can be one of the following values: * @arg OB_IWDG_SW: Software IWDG selected * @arg OB_IWDG_HW: Hardware IWDG selected * @param Stop: Reset event when entering STOP mode. * This parameter can be one of the following values: * @arg OB_STOP_NO_RST: No reset generated when entering in STOP * @arg OB_STOP_RST: Reset generated when entering in STOP * @param Stdby: Reset event when entering Standby mode. * This parameter can be one of the following values: * @arg OB_STDBY_NO_RST: No reset generated when entering in STANDBY * @arg OB_STDBY_RST: Reset generated when entering in STANDBY * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_UserConfig(uint8_t Iwdg, uint8_t Stop, uint8_t Stdby) { uint8_t optiontmp = 0xFF; HAL_StatusTypeDef status = HAL_OK; /* Check the parameters */ assert_param(IS_OB_IWDG_SOURCE(Iwdg)); assert_param(IS_OB_STOP_SOURCE(Stop)); assert_param(IS_OB_STDBY_SOURCE(Stdby)); /* Wait for last operation to be completed */ status = FLASH_WaitForLastOperation((uint32_t)FLASH_TIMEOUT_VALUE); if(status == HAL_OK) { /* Mask OPTLOCK, OPTSTRT, BOR_LEV and BFB2 bits */ optiontmp = (uint8_t)((*(__IO uint8_t *)OPTCR_BYTE0_ADDRESS) & (uint8_t)0x1F); /* Update User Option Byte */ *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS = Iwdg | (uint8_t)(Stdby | (uint8_t)(Stop | ((uint8_t)optiontmp))); } return status; } /** * @brief Set the BOR Level. * @param Level: specifies the Option Bytes BOR Reset Level. * This parameter can be one of the following values: * @arg OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V * @arg OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V * @arg OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V * @arg OB_BOR_OFF: Supply voltage ranges from 1.62 to 2.1 V * @retval HAL Status */ static HAL_StatusTypeDef FLASH_OB_BOR_LevelConfig(uint8_t Level) { /* Check the parameters */ assert_param(IS_OB_BOR_LEVEL(Level)); /* Set the BOR Level */ *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS &= (~FLASH_OPTCR_BOR_LEV); *(__IO uint8_t *)OPTCR_BYTE0_ADDRESS |= Level; return HAL_OK; } /** * @brief Return the FLASH User Option Byte value. * @retval uint8_t FLASH User Option Bytes values: IWDG_SW(Bit0), RST_STOP(Bit1) * and RST_STDBY(Bit2). */ static uint8_t FLASH_OB_GetUser(void) { /* Return the User Option Byte */ return ((uint8_t)(FLASH->OPTCR & 0xE0)); } /** * @brief Return the FLASH Write Protection Option Bytes value. * @retval uint16_t FLASH Write Protection Option Bytes value */ static uint16_t FLASH_OB_GetWRP(void) { /* Return the FLASH write protection Register value */ return (*(__IO uint16_t *)(OPTCR_BYTE2_ADDRESS)); } /** * @brief Returns the FLASH Read Protection level. * @retval FlagStatus FLASH Readout Protection Status: * - SET, when OB_RDP_Level_1 or OB_RDP_Level_2 is set * - RESET, when OB_RDP_Level_0 is set */ static FlagStatus FLASH_OB_GetRDP(void) { FlagStatus readstatus = RESET; if((*(__IO uint8_t*)(OPTCR_BYTE1_ADDRESS) != (uint8_t)OB_RDP_LEVEL_0)) { readstatus = SET; } return readstatus; } /** * @brief Returns the FLASH BOR level. * @retval uint8_t The FLASH BOR level: * - OB_BOR_LEVEL3: Supply voltage ranges from 2.7 to 3.6 V * - OB_BOR_LEVEL2: Supply voltage ranges from 2.4 to 2.7 V * - OB_BOR_LEVEL1: Supply voltage ranges from 2.1 to 2.4 V * - OB_BOR_OFF : Supply voltage ranges from 1.62 to 2.1 V */ static uint8_t FLASH_OB_GetBOR(void) { /* Return the FLASH BOR level */ return (uint8_t)(*(__IO uint8_t *)(OPTCR_BYTE0_ADDRESS) & (uint8_t)0x0C); } /** * @} */ #endif /* HAL_FLASH_MODULE_ENABLED */ /** * @} */ /** * @} */ /************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/