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Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_F302R8/stm32f30x_flash.c
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- 125:23cc3068a9e4
diff -r 73383cc04afd -r 23cc3068a9e4 targets/cmsis/TARGET_STM/TARGET_NUCLEO_F302R8/stm32f30x_flash.c --- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_F302R8/stm32f30x_flash.c Wed Mar 19 10:15:22 2014 +0000 @@ -0,0 +1,1180 @@ +/** + ****************************************************************************** + * @file stm32f30x_flash.c + * @author MCD Application Team + * @version V1.1.0 + * @date 27-February-2014 + * @brief This file provides firmware functions to manage the following + * functionalities of the FLASH peripheral: + * + FLASH Interface configuration + * + FLASH Memory Programming + * + Option Bytes Programming + * + Interrupts and flags management + * + @verbatim + + =============================================================================== + ##### How to use this driver ##### + =============================================================================== + [..] This driver provides functions to configure and program the FLASH + memory of all STM32F30x devices. These functions are split in 4 groups: + (#) FLASH Interface configuration functions: this group includes the + management of following features: + (++) Set the latency. + (++) Enable/Disable the Half Cycle Access. + (++) Enable/Disable the prefetch buffer. + (#) FLASH Memory Programming functions: this group includes all needed + functions to erase and program the main memory: + (++) Lock and Unlock the FLASH interface. + (++) Erase function: Erase page, erase all pages. + (++) Program functions: Half Word and Word write. + (#) FLASH Option Bytes Programming functions: this group includes all + needed functions to manage the Option Bytes: + (++) Lock and Unlock the Flash Option bytes. + (++) Launch the Option Bytes loader + (++) Erase the Option Bytes + (++) Set/Reset the write protection + (++) Set the Read protection Level + (++) Program the user option Bytes + (++) Set/Reset the BOOT1 bit + (++) Enable/Disable the VDDA Analog Monitoring + (++) Enable/Disable the SRAM parity + (++) Get the user option bytes + (++) Get the Write protection + (++) Get the read protection status + (#) FLASH Interrupts and flags management functions: this group includes + all needed functions to: + (++) Enable/Disable the FLASH interrupt sources. + (++) Get flags status. + (++) Clear flags. + (++) Get FLASH operation status. + (++) Wait for last FLASH operation. + + @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 "stm32f30x_flash.h" + +/** @addtogroup STM32F30x_StdPeriph_Driver + * @{ + */ + +/** @defgroup FLASH + * @brief FLASH driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ + +/* FLASH Mask */ +#define RDPRT_MASK ((uint32_t)0x00000002) +#define WRP01_MASK ((uint32_t)0x0000FFFF) +#define WRP23_MASK ((uint32_t)0xFFFF0000) +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Private functions ---------------------------------------------------------*/ + +/** @defgroup FLASH_Private_Functions + * @{ + */ + +/** @defgroup FLASH_Group1 FLASH Interface configuration functions + * @brief FLASH Interface configuration functions + * + +@verbatim + =============================================================================== + ##### FLASH Interface configuration functions ##### + =============================================================================== + [..] This group includes the following functions: + (+) void FLASH_SetLatency(uint32_t FLASH_Latency); + (+) void FLASH_HalfCycleAccessCmd(uint32_t FLASH_HalfCycleAccess); + (+) void FLASH_PrefetchBufferCmd(FunctionalState NewState); + [..] The unlock sequence is not needed for these functions. + +@endverbatim + * @{ + */ + +/** + * @brief Sets the code latency value. + * @param FLASH_Latency: specifies the FLASH Latency value. + * This parameter can be one of the following values: + * @arg FLASH_Latency_0: FLASH Zero Latency cycle + * @arg FLASH_Latency_1: FLASH One Latency cycle + * @arg FLASH_Latency_2: FLASH Two Latency cycles + * @retval None + */ +void FLASH_SetLatency(uint32_t FLASH_Latency) +{ + uint32_t tmpreg = 0; + + /* Check the parameters */ + assert_param(IS_FLASH_LATENCY(FLASH_Latency)); + + /* Read the ACR register */ + tmpreg = FLASH->ACR; + + /* Sets the Latency value */ + tmpreg &= (uint32_t) (~((uint32_t)FLASH_ACR_LATENCY)); + tmpreg |= FLASH_Latency; + + /* Write the ACR register */ + FLASH->ACR = tmpreg; +} + +/** + * @brief Enables or disables the Half cycle flash access. + * @param FLASH_HalfCycleAccess: specifies the FLASH Half cycle Access mode. + * This parameter can be one of the following values: + * @arg FLASH_HalfCycleAccess_Enable: FLASH Half Cycle Enable + * @arg FLASH_HalfCycleAccess_Disable: FLASH Half Cycle Disable + * @retval None + */ +void FLASH_HalfCycleAccessCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if(NewState != DISABLE) + { + FLASH->ACR |= FLASH_ACR_HLFCYA; + } + else + { + FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_HLFCYA)); + } +} + +/** + * @brief Enables or disables the Prefetch Buffer. + * @param NewState: new state of the Prefetch Buffer. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void FLASH_PrefetchBufferCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if(NewState != DISABLE) + { + FLASH->ACR |= FLASH_ACR_PRFTBE; + } + else + { + FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_PRFTBE)); + } +} + +/** + * @} + */ + +/** @defgroup FLASH_Group2 FLASH Memory Programming functions + * @brief FLASH Memory Programming functions + * +@verbatim + =============================================================================== + ##### FLASH Memory Programming functions ##### + =============================================================================== + [..] This group includes the following functions: + (+) void FLASH_Unlock(void); + (+) void FLASH_Lock(void); + (+) FLASH_Status FLASH_ErasePage(uint32_t Page_Address); + (+) FLASH_Status FLASH_EraseAllPages(void); + (+) FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data); + (+) FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data); + [..] Any operation of erase or program should follow these steps: + (#) Call the FLASH_Unlock() function to enable the FLASH control register + program memory access. + (#) Call the desired function to erase page or program data. + (#) Call the FLASH_Lock() function to disable the FLASH control register + access (recommended to protect the FLASH memory against possible + unwanted operation). + +@endverbatim + * @{ + */ + +/** + * @brief Unlocks the FLASH control register access + * @param None + * @retval None + */ +void FLASH_Unlock(void) +{ + if((FLASH->CR & FLASH_CR_LOCK) != RESET) + { + /* Authorize the FLASH Registers access */ + FLASH->KEYR = FLASH_KEY1; + FLASH->KEYR = FLASH_KEY2; + } +} + +/** + * @brief Locks the FLASH control register access + * @param None + * @retval None + */ +void FLASH_Lock(void) +{ + /* Set the LOCK Bit to lock the FLASH Registers access */ + FLASH->CR |= FLASH_CR_LOCK; +} + +/** + * @brief Erases a specified page in program memory. + * @note To correctly run this function, the FLASH_Unlock() function + * must be called before. + * @note Call the FLASH_Lock() to disable the flash memory access + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param Page_Address: The page address in program memory to be erased. + * @note A Page is erased in the Program memory only if the address to load + * is the start address of a page (multiple of 1024 bytes). + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_ErasePage(uint32_t Page_Address) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_PROGRAM_ADDRESS(Page_Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the previous operation is completed, proceed to erase the page */ + FLASH->CR |= FLASH_CR_PER; + FLASH->AR = Page_Address; + FLASH->CR |= FLASH_CR_STRT; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Disable the PER Bit */ + FLASH->CR &= ~FLASH_CR_PER; + } + + /* Return the Erase Status */ + return status; +} + +/** + * @brief Erases all FLASH pages. + * @note To correctly run this function, the FLASH_Unlock() function + * must be called before. + * all the FLASH_Lock() to disable the flash memory access + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param None + * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG, + * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_EraseAllPages(void) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* if the previous operation is completed, proceed to erase all pages */ + FLASH->CR |= FLASH_CR_MER; + FLASH->CR |= FLASH_CR_STRT; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Disable the MER Bit */ + FLASH->CR &= ~FLASH_CR_MER; + } + + /* Return the Erase Status */ + return status; +} + +/** + * @brief Programs a word at a specified address. + * @note To correctly run this function, the FLASH_Unlock() function + * must be called before. + * Call the FLASH_Lock() to disable the flash memory access + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param Address: specifies the address to be programmed. + * @param Data: specifies the data to be programmed. + * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG, + * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_ProgramWord(uint32_t Address, uint32_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; + __IO uint32_t tmp = 0; + + /* Check the parameters */ + assert_param(IS_FLASH_PROGRAM_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the previous operation is completed, proceed to program the new first + half word */ + FLASH->CR |= FLASH_CR_PG; + + *(__IO uint16_t*)Address = (uint16_t)Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the previous operation is completed, proceed to program the new second + half word */ + tmp = Address + 2; + + *(__IO uint16_t*) tmp = Data >> 16; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Disable the PG Bit */ + FLASH->CR &= ~FLASH_CR_PG; + } + else + { + /* Disable the PG Bit */ + FLASH->CR &= ~FLASH_CR_PG; + } + } + + /* Return the Program Status */ + return status; +} + +/** + * @brief Programs a half word at a specified address. + * @note To correctly run this function, the FLASH_Unlock() function + * must be called before. + * Call the FLASH_Lock() to disable the flash memory access + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param Address: specifies the address to be programmed. + * @param Data: specifies the data to be programmed. + * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG, + * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_ProgramHalfWord(uint32_t Address, uint16_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_PROGRAM_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the previous operation is completed, proceed to program the new data */ + FLASH->CR |= FLASH_CR_PG; + + *(__IO uint16_t*)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Disable the PG Bit */ + FLASH->CR &= ~FLASH_CR_PG; + } + + /* Return the Program Status */ + return status; +} + +/** + * @} + */ + +/** @defgroup FLASH_Group3 Option Bytes Programming functions + * @brief Option Bytes Programming functions + * +@verbatim + =============================================================================== + ##### Option Bytes Programming functions ##### + =============================================================================== + [..] This group includes the following functions: + (+) void FLASH_OB_Unlock(void); + (+) void FLASH_OB_Lock(void); + (+) void FLASH_OB_Erase(void); + (+) FLASH_Status FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState); + (+) FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP); + (+) FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY); + (+) FLASH_Status FLASH_OB_BOOTConfig(uint8_t OB_BOOT1); + (+) FLASH_Status FLASH_OB_VDDAConfig(uint8_t OB_VDDA_ANALOG); + (+) FLASH_Status FLASH_OB_SRMParityConfig(uint8_t OB_SRAM_Parity); + (+) FLASH_Status FLASH_OB_WriteUser(uint8_t OB_USER); + (+) FLASH_Status FLASH_OB_Launch(void); + (+) uint32_t FLASH_OB_GetUser(void); + (+) uint8_t FLASH_OB_GetWRP(void); + (+) uint8_t FLASH_OB_GetRDP(void); + [..] Any operation of erase or program should follow these steps: + (#) Call the FLASH_OB_Unlock() function to enable the FLASH option control + register access. + (#) Call one or several functions to program the desired Option Bytes: + (++) void FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState); + => to Enable/Disable the desired sector write protection. + (++) FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP) => to set the + desired read Protection Level. + (++) FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY); + => to configure the user Option Bytes. + (++) FLASH_Status FLASH_OB_BOOTConfig(uint8_t OB_BOOT1); + => to set the boot1 mode + (++) FLASH_Status FLASH_OB_VDDAConfig(uint8_t OB_VDDA_ANALOG); + => to Enable/Disable the VDDA monotoring. + (++) FLASH_Status FLASH_OB_SRMParityConfig(uint8_t OB_SRAM_Parity); + => to Enable/Disable the SRAM Parity check. + (++) FLASH_Status FLASH_OB_WriteUser(uint8_t OB_USER); + => to write all user option bytes: OB_IWDG, OB_STOP, OB_STDBY, + OB_BOOT1, OB_VDDA_ANALOG and OB_VDD_SD12. + (#) Once all needed Option Bytes to be programmed are correctly written, + call the FLASH_OB_Launch() function to launch the Option Bytes + programming process. + (#@) When changing the IWDG mode from HW to SW or from SW to HW, a system + reset is needed to make the change effective. + (#) Call the FLASH_OB_Lock() function to disable the FLASH option control + register access (recommended to protect the Option Bytes against + possible unwanted operations). + +@endverbatim + * @{ + */ + +/** + * @brief Unlocks the option bytes block access. + * @param None + * @retval None + */ +void FLASH_OB_Unlock(void) +{ + if((FLASH->CR & FLASH_CR_OPTWRE) == RESET) + { + /* Unlocking the option bytes block access */ + FLASH->OPTKEYR = FLASH_OPTKEY1; + FLASH->OPTKEYR = FLASH_OPTKEY2; + } +} + +/** + * @brief Locks the option bytes block access. + * @param None + * @retval None + */ +void FLASH_OB_Lock(void) +{ + /* Set the OPTWREN Bit to lock the option bytes block access */ + FLASH->CR &= ~FLASH_CR_OPTWRE; +} + +/** + * @brief Launch the option byte loading. + * @param None + * @retval None + */ +void FLASH_OB_Launch(void) +{ + /* Set the OBL_Launch bit to launch the option byte loading */ + FLASH->CR |= FLASH_CR_OBL_LAUNCH; +} + +/** + * @brief Erases the FLASH option bytes. + * @note This functions erases all option bytes except the Read protection (RDP). + * @param None + * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG, + * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_Erase(void) +{ + uint16_t rdptmp = OB_RDP_Level_0; + + FLASH_Status status = FLASH_COMPLETE; + + /* Get the actual read protection Option Byte value */ + if(FLASH_OB_GetRDP() != RESET) + { + rdptmp = 0x00; + } + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the previous operation is completed, proceed to erase the option bytes */ + FLASH->CR |= FLASH_CR_OPTER; + FLASH->CR |= FLASH_CR_STRT; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the erase operation is completed, disable the OPTER Bit */ + FLASH->CR &= ~FLASH_CR_OPTER; + + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + /* Restore the last read protection Option Byte value */ + OB->RDP = (uint16_t)rdptmp; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + else + { + if (status != FLASH_TIMEOUT) + { + /* Disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + } + /* Return the erase status */ + return status; +} + +/** + * @brief Write protects the desired pages + * @note To correctly run this function, the FLASH_OB_Unlock() function + * must be called before. + * @note Call the FLASH_OB_Lock() to disable the flash control register access and the option bytes + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param OB_WRP: specifies the address of the pages to be write protected. + * This parameter can be: + * @arg value between OB_WRP_Pages0to35 and OB_WRP_Pages60to63 + * @arg OB_WRP_AllPages + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_EnableWRP(uint32_t OB_WRP) +{ + uint16_t WRP0_Data = 0xFFFF, WRP1_Data = 0xFFFF; + + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_OB_WRP(OB_WRP)); + + OB_WRP = (uint32_t)(~OB_WRP); + WRP0_Data = (uint16_t)(OB_WRP & OB_WRP0_WRP0); + WRP1_Data = (uint16_t)((OB_WRP & OB_WRP0_nWRP0) >> 8); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + FLASH->CR |= FLASH_CR_OPTPG; + + if(WRP0_Data != 0xFF) + { + OB->WRP0 = WRP0_Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + if((status == FLASH_COMPLETE) && (WRP1_Data != 0xFF)) + { + OB->WRP1 = WRP1_Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the write protection operation Status */ + return status; +} + +/** + * @brief Enables or disables the read out protection. + * @note To correctly run this function, the FLASH_OB_Unlock() function + * must be called before. + * @note Call the FLASH_OB_Lock() to disable the flash control register access and the option bytes + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param FLASH_ReadProtection_Level: specifies the read protection level. + * This parameter can be: + * @arg OB_RDP_Level_0: No protection + * @arg OB_RDP_Level_1: Read protection of the memory + * @arg OB_RDP_Level_2: Chip protection + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_RDPConfig(uint8_t OB_RDP) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_OB_RDP(OB_RDP)); + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + FLASH->CR |= FLASH_CR_OPTER; + FLASH->CR |= FLASH_CR_STRT; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* If the erase operation is completed, disable the OPTER Bit */ + FLASH->CR &= ~FLASH_CR_OPTER; + + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + OB->RDP = OB_RDP; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + else + { + if(status != FLASH_TIMEOUT) + { + /* Disable the OPTER Bit */ + FLASH->CR &= ~FLASH_CR_OPTER; + } + } + } + /* Return the protection operation Status */ + return status; +} + +/** + * @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY. + * @param OB_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 OB_STOP: Reset event when entering STOP mode. + * This parameter can be one of the following values: + * @arg OB_STOP_NoRST: No reset generated when entering in STOP + * @arg OB_STOP_RST: Reset generated when entering in STOP + * @param OB_STDBY: Reset event when entering Standby mode. + * This parameter can be one of the following values: + * @arg OB_STDBY_NoRST: No reset generated when entering in STANDBY + * @arg OB_STDBY_RST: Reset generated when entering in STANDBY + * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG, + * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_OB_IWDG_SOURCE(OB_IWDG)); + assert_param(IS_OB_STOP_SOURCE(OB_STOP)); + assert_param(IS_OB_STDBY_SOURCE(OB_STDBY)); + + /* Authorize the small information block programming */ + FLASH->OPTKEYR = FLASH_KEY1; + FLASH->OPTKEYR = FLASH_KEY2; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + OB->USER = (uint8_t)((uint8_t)(OB_IWDG | OB_STOP) | (uint8_t)(OB_STDBY |0xF8)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the Option Byte program Status */ + return status; +} + +/** + * @brief Sets or resets the BOOT1. + * @param OB_BOOT1: Set or Reset the BOOT1. + * This parameter can be one of the following values: + * @arg OB_BOOT1_RESET: BOOT1 Reset + * @arg OB_BOOT1_SET: BOOT1 Set + * @retval None + */ +FLASH_Status FLASH_OB_BOOTConfig(uint8_t OB_BOOT1) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_OB_BOOT1(OB_BOOT1)); + + /* Authorize the small information block programming */ + FLASH->OPTKEYR = FLASH_KEY1; + FLASH->OPTKEYR = FLASH_KEY2; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + OB->USER = OB_BOOT1|0xEF; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the Option Byte program Status */ + return status; +} + +/** + * @brief Sets or resets the analogue monitoring on VDDA Power source. + * @param OB_VDDA_ANALOG: Selects the analog monitoring on VDDA Power source. + * This parameter can be one of the following values: + * @arg OB_VDDA_ANALOG_ON: Analog monitoring on VDDA Power source ON + * @arg OB_VDDA_ANALOG_OFF: Analog monitoring on VDDA Power source OFF + * @retval None + */ +FLASH_Status FLASH_OB_VDDAConfig(uint8_t OB_VDDA_ANALOG) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_OB_VDDA_ANALOG(OB_VDDA_ANALOG)); + + /* Authorize the small information block programming */ + FLASH->OPTKEYR = FLASH_KEY1; + FLASH->OPTKEYR = FLASH_KEY2; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + OB->USER = OB_VDDA_ANALOG |0xDF; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the Option Byte program Status */ + return status; +} + +/** + * @brief Sets or resets the SRAM partiy. + * @param OB_SRAM_Parity: Set or Reset the SRAM partiy enable bit. + * This parameter can be one of the following values: + * @arg OB_SRAM_PARITY_SET: Set SRAM partiy. + * @arg OB_SRAM_PARITY_RESET: Reset SRAM partiy. + * @retval None + */ +FLASH_Status FLASH_OB_SRAMParityConfig(uint8_t OB_SRAM_Parity) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_OB_SRAM_PARITY(OB_SRAM_Parity)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + OB->USER = OB_SRAM_Parity | 0xBF; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the Option Byte program Status */ + return status; +} + +/** + * @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY/ BOOT1 and OB_VDDA_ANALOG. + * @note To correctly run this function, the FLASH_OB_Unlock() function + * must be called before. + * @note Call the FLASH_OB_Lock() to disable the flash control register access and the option bytes + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param OB_USER: Selects all user option bytes + * This parameter is a combination of the following values: + * @arg OB_IWDG_SW / OB_IWDG_HW: Software / Hardware WDG selected + * @arg OB_STOP_NoRST / OB_STOP_RST: No reset / Reset generated when entering in STOP + * @arg OB_STDBY_NoRST / OB_STDBY_RST: No reset / Reset generated when entering in STANDBY + * @arg OB_BOOT1_RESET / OB_BOOT1_SET: BOOT1 Reset / Set + * @arg OB_VDDA_ANALOG_ON / OB_VDDA_ANALOG_OFF: Analog monitoring on VDDA Power source ON / OFF + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_WriteUser(uint8_t OB_USER) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Authorize the small information block programming */ + FLASH->OPTKEYR = FLASH_KEY1; + FLASH->OPTKEYR = FLASH_KEY2; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Enable the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + + OB->USER = OB_USER | 0x88; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* if the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the Option Byte program Status */ + return status; + +} + +/** + * @brief Programs a half word at a specified Option Byte Data address. + * @note To correctly run this function, the FLASH_OB_Unlock() function + * must be called before. + * Call the FLASH_OB_Lock() to disable the flash control register access and the option bytes + * (recommended to protect the FLASH memory against possible unwanted operation) + * @param Address: specifies the address to be programmed. + * This parameter can be 0x1FFFF804 or 0x1FFFF806. + * @param Data: specifies the data to be programmed. + * @retval FLASH Status: The returned value can be: FLASH_ERROR_PG, + * FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_ProgramOptionByteData(uint32_t Address, uint8_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; + /* Check the parameters */ + assert_param(IS_OB_DATA_ADDRESS(Address)); + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Enables the Option Bytes Programming operation */ + FLASH->CR |= FLASH_CR_OPTPG; + *(__IO uint16_t*)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status != FLASH_TIMEOUT) + { + /* If the program operation is completed, disable the OPTPG Bit */ + FLASH->CR &= ~FLASH_CR_OPTPG; + } + } + /* Return the Option Byte Data Program Status */ + return status; +} + +/** + * @brief Returns the FLASH User Option Bytes values. + * @param None + * @retval The FLASH User Option Bytes . + */ +uint8_t FLASH_OB_GetUser(void) +{ + /* Return the User Option Byte */ + return (uint8_t)(FLASH->OBR >> 8); +} + +/** + * @brief Returns the FLASH Write Protection Option Bytes value. + * @param None + * @retval The FLASH Write Protection Option Bytes value + */ +uint32_t FLASH_OB_GetWRP(void) +{ + /* Return the FLASH write protection Register value */ + return (uint32_t)(FLASH->WRPR); +} + +/** + * @brief Checks whether the FLASH Read out Protection Status is set or not. + * @param None + * @retval FLASH ReadOut Protection Status(SET or RESET) + */ +FlagStatus FLASH_OB_GetRDP(void) +{ + FlagStatus readstatus = RESET; + + if ((uint8_t)(FLASH->OBR & (FLASH_OBR_RDPRT1 | FLASH_OBR_RDPRT2)) != RESET) + { + readstatus = SET; + } + else + { + readstatus = RESET; + } + return readstatus; +} + +/** + * @} + */ + +/** @defgroup FLASH_Group4 Interrupts and flags management functions + * @brief Interrupts and flags management functions + * +@verbatim + =============================================================================== + ##### Interrupts and flags management functions ##### + =============================================================================== + +@endverbatim + * @{ + */ + +/** + * @brief Enables or disables the specified FLASH interrupts. + * @param FLASH_IT: specifies the FLASH interrupt sources to be enabled or + * disabled. + * This parameter can be any combination of the following values: + * @arg FLASH_IT_EOP: FLASH end of programming Interrupt + * @arg FLASH_IT_ERR: FLASH Error Interrupt + * @retval None + */ +void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FLASH_IT(FLASH_IT)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if(NewState != DISABLE) + { + /* Enable the interrupt sources */ + FLASH->CR |= FLASH_IT; + } + else + { + /* Disable the interrupt sources */ + FLASH->CR &= ~(uint32_t)FLASH_IT; + } +} + +/** + * @brief Checks whether the specified FLASH flag is set or not. + * @param FLASH_FLAG: specifies the FLASH flag to check. + * This parameter can be one of the following values: + * @arg FLASH_FLAG_BSY: FLASH write/erase operations in progress flag + * @arg FLASH_FLAG_PGERR: FLASH Programming error flag flag + * @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag + * @arg FLASH_FLAG_EOP: FLASH End of Programming flag + * @retval The new state of FLASH_FLAG (SET or RESET). + */ +FlagStatus FLASH_GetFlagStatus(uint32_t FLASH_FLAG) +{ + FlagStatus bitstatus = RESET; + + /* Check the parameters */ + assert_param(IS_FLASH_GET_FLAG(FLASH_FLAG)); + + if((FLASH->SR & FLASH_FLAG) != (uint32_t)RESET) + { + bitstatus = SET; + } + else + { + bitstatus = RESET; + } + /* Return the new state of FLASH_FLAG (SET or RESET) */ + return bitstatus; +} + +/** + * @brief Clears the FLASH's pending flags. + * @param FLASH_FLAG: specifies the FLASH flags to clear. + * This parameter can be any combination of the following values: + * @arg FLASH_FLAG_PGERR: FLASH Programming error flag flag + * @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag + * @arg FLASH_FLAG_EOP: FLASH End of Programming flag + * @retval None + */ +void FLASH_ClearFlag(uint32_t FLASH_FLAG) +{ + /* Check the parameters */ + assert_param(IS_FLASH_CLEAR_FLAG(FLASH_FLAG)); + + /* Clear the flags */ + FLASH->SR = FLASH_FLAG; +} + +/** + * @brief Returns the FLASH Status. + * @param None + * @retval FLASH Status: The returned value can be: + * FLASH_BUSY, FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP or FLASH_COMPLETE. + */ +FLASH_Status FLASH_GetStatus(void) +{ + FLASH_Status FLASHstatus = FLASH_COMPLETE; + + if((FLASH->SR & FLASH_FLAG_BSY) == FLASH_FLAG_BSY) + { + FLASHstatus = FLASH_BUSY; + } + else + { + if((FLASH->SR & (uint32_t)FLASH_FLAG_WRPERR)!= (uint32_t)0x00) + { + FLASHstatus = FLASH_ERROR_WRP; + } + else + { + if((FLASH->SR & (uint32_t)(FLASH_SR_PGERR)) != (uint32_t)0x00) + { + FLASHstatus = FLASH_ERROR_PROGRAM; + } + else + { + FLASHstatus = FLASH_COMPLETE; + } + } + } + /* Return the FLASH Status */ + return FLASHstatus; +} + +/** + * @brief Waits for a FLASH operation to complete or a TIMEOUT to occur. + * @param Timeout: FLASH programming Timeout + * @retval FLASH Status: The returned value can be: FLASH_BUSY, + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_WaitForLastOperation(uint32_t Timeout) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check for the FLASH Status */ + status = FLASH_GetStatus(); + + /* Wait for a FLASH operation to complete or a TIMEOUT to occur */ + while((status == FLASH_BUSY) && (Timeout != 0x00)) + { + status = FLASH_GetStatus(); + Timeout--; + } + + if(Timeout == 0x00 ) + { + status = FLASH_TIMEOUT; + } + /* Return the operation status */ + return status; +} + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/** + * @} + */ + +/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/