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Diffstat (limited to 'thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32L1xx_StdPeriph_Driver/src/stm32l1xx_flash.c')
| -rw-r--r-- | thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32L1xx_StdPeriph_Driver/src/stm32l1xx_flash.c | 1652 |
1 files changed, 1652 insertions, 0 deletions
diff --git a/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32L1xx_StdPeriph_Driver/src/stm32l1xx_flash.c b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32L1xx_StdPeriph_Driver/src/stm32l1xx_flash.c new file mode 100644 index 0000000..9bd1e86 --- /dev/null +++ b/thirdparty/STM32_USB-FS-Device_Lib_V4.0.0/Libraries/STM32L1xx_StdPeriph_Driver/src/stm32l1xx_flash.c @@ -0,0 +1,1652 @@ +/** + ****************************************************************************** + * @file stm32l1xx_flash.c + * @author MCD Application Team + * @version V1.1.1 + * @date 05-March-2012 + * @brief This file provides all the Flash firmware functions. These functions + * can be executed from Internal FLASH or Internal SRAM memories. + * The functions that should be called from SRAM are defined inside + * the "stm32l1xx_flash_ramfunc.c" file. + * This file provides firmware functions to manage the following + * functionalities of the FLASH peripheral: + * + FLASH Interface configuration + * + FLASH Memory Programming + * + DATA EEPROM 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 STM32L1xx devices. + [..] These functions are split in 5 groups: + (#) FLASH Interface configuration functions: this group includes + the management of following features: + (++) Set the latency. + (++) Enable/Disable the prefetch buffer. + (++) Enable/Disable the 64 bit Read Access. + (++) Enable/Disable the RUN PowerDown mode. + (++) Enable/Disable the SLEEP PowerDown mode. + + (#) 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. + (++) Program functions: Fast Word and Half Page(should be + executed from internal SRAM). + + (#) DATA EEPROM Programming functions: this group includes all + needed functions to erase and program the DATA EEPROM memory: + (++) Lock and Unlock the DATA EEPROM interface. + (++) Erase function: Erase Byte, erase HalfWord, erase Word, erase + (++) Double Word (should be executed from internal SRAM). + (++) Program functions: Fast Program Byte, Fast Program Half-Word, + FastProgramWord, Program Byte, Program Half-Word, + Program Word and Program Double-Word (should be executed + from internal SRAM). + + (#) FLASH Option Bytes Programming functions: this group includes + all needed functions to: + (++) Lock and Unlock the Flash Option bytes. + (++) Set/Reset the write protection. + (++) Set the Read protection Level. + (++) Set the BOR level. + (++) rogram the user option Bytes. + (++) Launch the Option Bytes loader. + (++) Get the Write protection. + (++) Get the read protection status. + (++) Get the BOR level. + (++) Get the user option bytes. + + (#) FLASH Interrupts and flag 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 2012 STMicroelectronics</center></h2> + * + * Licensed under MCD-ST Liberty SW License Agreement V2, (the "License"); + * You may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.st.com/software_license_agreement_liberty_v2 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + * + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l1xx_flash.h" + +/** @addtogroup STM32L1xx_StdPeriph_Driver + * @{ + */ + +/** @defgroup FLASH + * @brief FLASH driver modules + * @{ + */ + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ + +/* FLASH Mask */ +#define WRP01_MASK ((uint32_t)0x0000FFFF) +#define WRP23_MASK ((uint32_t)0xFFFF0000) +#define WRP45_MASK ((uint32_t)0x0000FFFF) +#define WRP67_MASK ((uint32_t)0xFFFF0000) +#define WRP89_MASK ((uint32_t)0x0000FFFF) +#define WRP1011_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 ##### + ============================================================================== + + [..] FLASH_Interface configuration_Functions, includes the following functions: + (+) void FLASH_SetLatency(uint32_t FLASH_Latency): + [..] To correctly read data from Flash memory, the number of wait states (LATENCY) + must be correctly programmed according to the frequency of the CPU clock + (HCLK) and the supply voltage of the device. + [..] + ---------------------------------------------------------------- + | Wait states | HCLK clock frequency (MHz) | + | |------------------------------------------------| + | (Latency) | voltage range | voltage range | + | | 1.65 V - 3.6 V | 2.0 V - 3.6 V | + | |----------------|---------------|---------------| + | | VCORE = 1.2 V | VCORE = 1.5 V | VCORE = 1.8 V | + |-------------- |----------------|---------------|---------------| + |0WS(1CPU cycle)|0 < HCLK <= 2 |0 < HCLK <= 8 |0 < HCLK <= 16 | + |---------------|----------------|---------------|---------------| + |1WS(2CPU cycle)|2 < HCLK <= 4 |8 < HCLK <= 16 |16 < HCLK <= 32| + ---------------------------------------------------------------- + [..] + (+) void FLASH_PrefetchBufferCmd(FunctionalState NewState); + (+) void FLASH_ReadAccess64Cmd(FunctionalState NewState); + (+) void FLASH_RUNPowerDownCmd(FunctionalState NewState); + (+) void FLASH_SLEEPPowerDownCmd(FunctionalState NewState); + (+) void FLASH_ITConfig(uint32_t FLASH_IT, FunctionalState NewState); + [..] + Here below the allowed configuration of Latency, 64Bit access and prefetch buffer + [..] + -------------------------------------------------------------------------------- + | | ACC64 = 0 | ACC64 = 1 | + | Latency |----------------|---------------|---------------|---------------| + | | PRFTEN = 0 | PRFTEN = 1 | PRFTEN = 0 | PRFTEN = 1 | + |---------------|----------------|---------------|---------------|---------------| + |0WS(1CPU cycle)| YES | NO | YES | YES | + |---------------|----------------|---------------|---------------|---------------| + |1WS(2CPU cycle)| NO | NO | YES | YES | + -------------------------------------------------------------------------------- + [..] + All these functions don't need the unlock sequence. + +@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. + * @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 Prefetch Buffer. + * @param NewState: new state of the FLASH 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_PRFTEN; + } + else + { + FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_PRFTEN)); + } +} + +/** + * @brief Enables or disables read access to flash by 64 bits. + * @param NewState: new state of the FLASH read access mode. + * This parameter can be: ENABLE or DISABLE. + * @note If this bit is set, the Read access 64 bit is used. + * If this bit is reset, the Read access 32 bit is used. + * @note This bit cannot be written at the same time as the LATENCY and + * PRFTEN bits. + * To reset this bit, the LATENCY should be zero wait state and the + * prefetch off. + * @retval None + */ +void FLASH_ReadAccess64Cmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if(NewState != DISABLE) + { + FLASH->ACR |= FLASH_ACR_ACC64; + } + else + { + FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_ACC64)); + } +} + +/** + * @brief Enable or disable the power down mode during Sleep mode. + * @note This function is used to power down the FLASH when the system is in SLEEP LP mode. + * @param NewState: new state of the power down mode during sleep mode. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void FLASH_SLEEPPowerDownCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if (NewState != DISABLE) + { + /* Set the SLEEP_PD bit to put Flash in power down mode during sleep mode */ + FLASH->ACR |= FLASH_ACR_SLEEP_PD; + } + else + { + /* Clear the SLEEP_PD bit in to put Flash in idle mode during sleep mode */ + FLASH->ACR &= (uint32_t)(~((uint32_t)FLASH_ACR_SLEEP_PD)); + } +} + +/** + * @} + */ + +/** @defgroup FLASH_Group2 FLASH Memory Programming functions + * @brief FLASH Memory Programming functions + * +@verbatim + ============================================================================== + ##### FLASH Memory Programming functions ##### + ============================================================================== + + [..] The FLASH Memory Programming functions, includes the following functions: + (+) void FLASH_Unlock(void); + (+) void FLASH_Lock(void); + (+) FLASH_Status FLASH_ErasePage(uint32_t Page_Address); + (+) FLASH_Status FLASH_FastProgramWord(uint32_t Address, uint32_t Data); + + [..] Any operation of erase or program should follow these steps: + (#) Call the FLASH_Unlock() function to enable the flash control register and + program memory access. + (#) Call the desired function to erase page or program data. + (#) Call the FLASH_Lock() to disable the flash program memory access + (recommended to protect the FLASH memory against possible unwanted operation). + +@endverbatim + * @{ + */ + +/** + * @brief Unlocks the FLASH control register and program memory access. + * @param None + * @retval None + */ +void FLASH_Unlock(void) +{ + if((FLASH->PECR & FLASH_PECR_PRGLOCK) != RESET) + { + /* Unlocking the data memory and FLASH_PECR register access */ + DATA_EEPROM_Unlock(); + + /* Unlocking the program memory access */ + FLASH->PRGKEYR = FLASH_PRGKEY1; + FLASH->PRGKEYR = FLASH_PRGKEY2; + } +} + +/** + * @brief Locks the Program memory access. + * @param None + * @retval None + */ +void FLASH_Lock(void) +{ + /* Set the PRGLOCK Bit to lock the program memory access */ + FLASH->PECR |= FLASH_PECR_PRGLOCK; +} + +/** + * @brief Erases a specified page in program memory. + * @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 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 256 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 */ + + /* Set the ERASE bit */ + FLASH->PECR |= FLASH_PECR_ERASE; + + /* Set PROG bit */ + FLASH->PECR |= FLASH_PECR_PROG; + + /* Write 00000000h to the first word of the program page to erase */ + *(__IO uint32_t *)Page_Address = 0x00000000; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* If the erase operation is completed, disable the ERASE and PROG bits */ + FLASH->PECR &= (uint32_t)(~FLASH_PECR_PROG); + FLASH->PECR &= (uint32_t)(~FLASH_PECR_ERASE); + } + /* Return the Erase Status */ + return status; +} + +/** + * @brief Programs a word at a specified address in program memory. + * @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 written. + * @param Data: specifies the data to be written. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_FastProgramWord(uint32_t Address, uint32_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 word */ + *(__IO uint32_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + /* Return the Write Status */ + return status; +} + +/** + * @} + */ + +/** @defgroup FLASH_Group3 DATA EEPROM Programming functions + * @brief DATA EEPROM Programming functions + * +@verbatim + =============================================================================== + ##### DATA EEPROM Programming functions ##### + =============================================================================== + + [..] The DATA_EEPROM Programming_Functions, includes the following functions: + (+) void DATA_EEPROM_Unlock(void); + (+) void DATA_EEPROM_Lock(void); + (+) FLASH_Status DATA_EEPROM_EraseByte(uint32_t Address); + (+) FLASH_Status DATA_EEPROM_EraseHalfWord(uint32_t Address); + (+) FLASH_Status DATA_EEPROM_EraseWord(uint32_t Address); + (+) FLASH_Status DATA_EEPROM_FastProgramByte(uint32_t Address, uint8_t Data); + (+) FLASH_Status DATA_EEPROM_FastProgramHalfWord(uint32_t Address, uint16_t Data); + (+) FLASH_Status DATA_EEPROM_FastProgramWord(uint32_t Address, uint32_t Data); + (+) FLASH_Status DATA_EEPROM_ProgramByte(uint32_t Address, uint8_t Data); + (+) FLASH_Status DATA_EEPROM_ProgramHalfWord(uint32_t Address, uint16_t Data); + (+) FLASH_Status DATA_EEPROM_ProgramWord(uint32_t Address, uint32_t Data); + + [..] Any operation of erase or program should follow these steps: + (#) Call the DATA_EEPROM_Unlock() function to enable the data EEPROM access + and Flash program erase control register access. + (#) Call the desired function to erase or program data. + (#) Call the DATA_EEPROM_Lock() to disable the data EEPROM access + and Flash program erase control register access(recommended + to protect the DATA_EEPROM against possible unwanted operation). + +@endverbatim + * @{ + */ + +/** + * @brief Unlocks the data memory and FLASH_PECR register access. + * @param None + * @retval None + */ +void DATA_EEPROM_Unlock(void) +{ + if((FLASH->PECR & FLASH_PECR_PELOCK) != RESET) + { + /* Unlocking the Data memory and FLASH_PECR register access*/ + FLASH->PEKEYR = FLASH_PEKEY1; + FLASH->PEKEYR = FLASH_PEKEY2; + } +} + +/** + * @brief Locks the Data memory and FLASH_PECR register access. + * @param None + * @retval None + */ +void DATA_EEPROM_Lock(void) +{ + /* Set the PELOCK Bit to lock the data memory and FLASH_PECR register access */ + FLASH->PECR |= FLASH_PECR_PELOCK; +} + +/** + * @brief Enables or disables DATA EEPROM fixed Time programming (2*Tprog). + * @param NewState: new state of the DATA EEPROM fixed Time programming mode. + * This parameter can be: ENABLE or DISABLE. + * @retval None + */ +void DATA_EEPROM_FixedTimeProgramCmd(FunctionalState NewState) +{ + /* Check the parameters */ + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + if(NewState != DISABLE) + { + FLASH->PECR |= (uint32_t)FLASH_PECR_FTDW; + } + else + { + FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW)); + } +} + +/** + * @brief Erase a byte in data memory. + * @param Address: specifies the address to be erased. + * @note This function can be used only for STM32L1XX_HD and STM32L1XX_MDP + * density devices. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_EraseByte(uint32_t Address) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Write "00h" to valid address in the data memory" */ + *(__IO uint8_t *) Address = (uint8_t)0x00; + } + + /* Return the erase status */ + return status; +} + +/** + * @brief Erase a halfword in data memory. + * @param Address: specifies the address to be erased. + * @note This function can be used only for STM32L1XX_HD and STM32L1XX_MDP + * density devices. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_EraseHalfWord(uint32_t Address) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Write "0000h" to valid address in the data memory" */ + *(__IO uint16_t *) Address = (uint16_t)0x0000; + } + + /* Return the erase status */ + return status; +} + +/** + * @brief Erase a word in data memory. + * @param Address: specifies the address to be erased. + * @note For STM32L1XX_MD, A data memory word is erased in the data memory only + * if the address to load is the start address of a word (multiple of a word). + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_EraseWord(uint32_t Address) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Write "00000000h" to valid address in the data memory" */ + *(__IO uint32_t *) Address = 0x00000000; + } + + /* Return the erase status */ + return status; +} + +/** + * @brief Write a Byte at a specified address in data memory. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @param Address: specifies the address to be written. + * @param Data: specifies the data to be written. + * @note This function assumes that the is data word is already erased. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_FastProgramByte(uint32_t Address, uint8_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + uint32_t tmp = 0, tmpaddr = 0; +#endif + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Clear the FTDW bit */ + FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW)); + +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + if(Data != (uint8_t)0x00) + { + /* If the previous operation is completed, proceed to write the new Data */ + *(__IO uint8_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + else + { + tmpaddr = Address & 0xFFFFFFFC; + tmp = * (__IO uint32_t *) tmpaddr; + tmpaddr = 0xFF << ((uint32_t) (0x8 * (Address & 0x3))); + tmp &= ~tmpaddr; + status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC); + status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp); + } +#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) + /* If the previous operation is completed, proceed to write the new Data */ + *(__IO uint8_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); +#endif + } + /* Return the Write Status */ + return status; +} + +/** + * @brief Writes a half word at a specified address in data memory. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @param Address: specifies the address to be written. + * @param Data: specifies the data to be written. + * @note This function assumes that the is data word is already erased. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_FastProgramHalfWord(uint32_t Address, uint16_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + uint32_t tmp = 0, tmpaddr = 0; +#endif + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Clear the FTDW bit */ + FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW)); + +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + if(Data != (uint16_t)0x0000) + { + /* If the previous operation is completed, proceed to write the new data */ + *(__IO uint16_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + else + { + if((Address & 0x3) != 0x3) + { + tmpaddr = Address & 0xFFFFFFFC; + tmp = * (__IO uint32_t *) tmpaddr; + tmpaddr = 0xFFFF << ((uint32_t) (0x8 * (Address & 0x3))); + tmp &= ~tmpaddr; + status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC); + status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp); + } + else + { + DATA_EEPROM_FastProgramByte(Address, 0x00); + DATA_EEPROM_FastProgramByte(Address + 1, 0x00); + } + } +#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) + /* If the previous operation is completed, proceed to write the new data */ + *(__IO uint16_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); +#endif + } + /* Return the Write Status */ + return status; +} + +/** + * @brief Programs a word at a specified address in data memory. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to the data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @param Address: specifies the address to be written. + * @param Data: specifies the data to be written. + * @note This function assumes that the is data word is already erased. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_FastProgramWord(uint32_t Address, uint32_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Clear the FTDW bit */ + FLASH->PECR &= (uint32_t)(~((uint32_t)FLASH_PECR_FTDW)); + + /* If the previous operation is completed, proceed to program the new data */ + *(__IO uint32_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + /* Return the Write Status */ + return status; +} + +/** + * @brief Write a Byte at a specified address in data memory without erase. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @note The function DATA_EEPROM_FixedTimeProgramCmd() can be called before + * this function to configure the Fixed Time Programming. + * @param Address: specifies the address to be written. + * @param Data: specifies the data to be written. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_ProgramByte(uint32_t Address, uint8_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + uint32_t tmp = 0, tmpaddr = 0; +#endif + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + if(Data != (uint8_t) 0x00) + { + *(__IO uint8_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + } + else + { + tmpaddr = Address & 0xFFFFFFFC; + tmp = * (__IO uint32_t *) tmpaddr; + tmpaddr = 0xFF << ((uint32_t) (0x8 * (Address & 0x3))); + tmp &= ~tmpaddr; + status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC); + status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp); + } +#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) + *(__IO uint8_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); +#endif + } + /* Return the Write Status */ + return status; +} + +/** + * @brief Writes a half word at a specified address in data memory without erase. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @note The function DATA_EEPROM_FixedTimeProgramCmd() can be called before + * this function to configure the Fixed Time Programming + * @param Address: specifies the address to be written. + * @param Data: specifies the data to be written. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_ProgramHalfWord(uint32_t Address, uint16_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + uint32_t tmp = 0, tmpaddr = 0; +#endif + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { +#if !defined (STM32L1XX_HD) && !defined (STM32L1XX_MDP) + if(Data != (uint16_t)0x0000) + { + *(__IO uint16_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + else + { + if((Address & 0x3) != 0x3) + { + tmpaddr = Address & 0xFFFFFFFC; + tmp = * (__IO uint32_t *) tmpaddr; + tmpaddr = 0xFFFF << ((uint32_t) (0x8 * (Address & 0x3))); + tmp &= ~tmpaddr; + status = DATA_EEPROM_EraseWord(Address & 0xFFFFFFFC); + status = DATA_EEPROM_FastProgramWord((Address & 0xFFFFFFFC), tmp); + } + else + { + DATA_EEPROM_FastProgramByte(Address, 0x00); + DATA_EEPROM_FastProgramByte(Address + 1, 0x00); + } + } +#elif defined (STM32L1XX_HD) || defined (STM32L1XX_MDP) + *(__IO uint16_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); +#endif + } + /* Return the Write Status */ + return status; +} + +/** + * @brief Programs a word at a specified address in data memory without erase. + * @note To correctly run this function, the DATA_EEPROM_Unlock() function + * must be called before. + * Call the DATA_EEPROM_Lock() to he data EEPROM access + * and Flash program erase control register access(recommended to protect + * the DATA_EEPROM against possible unwanted operation). + * @note The function DATA_EEPROM_FixedTimeProgramCmd() can be called before + * this function to configure the Fixed Time Programming. + * @param Address: specifies the address to be written. + * @param Data: specifies the data to be written. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status DATA_EEPROM_ProgramWord(uint32_t Address, uint32_t Data) +{ + FLASH_Status status = FLASH_COMPLETE; + + /* Check the parameters */ + assert_param(IS_FLASH_DATA_ADDRESS(Address)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + *(__IO uint32_t *)Address = Data; + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + /* Return the Write Status */ + return status; +} + +/** + * @} + */ + +/** @defgroup FLASH_Group4 Option Bytes Programming functions + * @brief Option Bytes Programming functions + * +@verbatim + ============================================================================== + ##### Option Bytes Programming functions ##### + ============================================================================== + + [..] The FLASH_Option Bytes Programming_functions, includes the following functions: + (+) void FLASH_OB_Unlock(void); + (+) void FLASH_OB_Lock(void); + (+) void FLASH_OB_Launch(void); + (+) FLASH_Status FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState); + (+) FLASH_Status FLASH_OB_WRP1Config(uint32_t OB_WRP1, FunctionalState NewState); + (+) FLASH_Status FLASH_OB_WRP2Config(uint32_t OB_WRP2, 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_BORConfig(uint8_t OB_BOR); + (+) uint8_t FLASH_OB_GetUser(void); + (+) uint32_t FLASH_OB_GetWRP(void); + (+) uint32_t FLASH_OB_GetWRP1(void); + (+) uint32_t FLASH_OB_GetWRP2(void); + (+) FlagStatus FLASH_OB_GetRDP(void); + (+) uint8_t FLASH_OB_GetBOR(void); + (+) FLASH_Status FLASH_OB_BootConfig(uint16_t OB_BOOT); + + [..] 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. + (++) void FLASH_OB_RDPConfig(uint8_t OB_RDP) => to set the desired read Protection Level. + (++) void FLASH_OB_UserConfig(uint8_t OB_IWDG, uint8_t OB_STOP, uint8_t OB_STDBY) => to configure + the user option Bytes: IWDG, STOP and the Standby. + (++) void FLASH_OB_BORConfig(uint8_t OB_BOR) => to Set the BOR level. + (++) FLASH_Status FLASH_ProgramOTP(uint32_t Address, uint32_t Data) => to program the OTP bytes . + (#) Once all needed option bytes to be programmed are correctly written, call the + FLASH_OB_Launch(void) function to launch the Option Bytes programming process. + (#) Call the FLASH_OB_Lock() 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->PECR & FLASH_PECR_OPTLOCK) != RESET) + { + /* Unlocking the data memory and FLASH_PECR register access */ + DATA_EEPROM_Unlock(); + + /* 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 OPTLOCK Bit to lock the option bytes block access */ + FLASH->PECR |= FLASH_PECR_OPTLOCK; +} + +/** + * @brief Launch the option byte loading. + * @param None + * @retval None + */ +void FLASH_OB_Launch(void) +{ + /* Set the OBL_Launch bit to lauch the option byte loading */ + FLASH->PECR |= FLASH_PECR_OBL_LAUNCH; +} + +/** + * @brief Write protects the desired pages. + * @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 OB_WRP: specifies the address of the pages to be write protected. + * This parameter can be: + * @param value between OB_WRP_Pages0to15 and OB_WRP_Pages496to511 + * @param OB_WRP_AllPages + * @param NewState: new state of the specified FLASH Pages Wtite protection. + * This parameter can be: ENABLE or DISABLE. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_WRPConfig(uint32_t OB_WRP, FunctionalState NewState) +{ + uint32_t WRP01_Data = 0, WRP23_Data = 0; + + FLASH_Status status = FLASH_COMPLETE; + uint32_t tmp1 = 0, tmp2 = 0; + + /* Check the parameters */ + assert_param(IS_OB_WRP(OB_WRP)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + if (NewState != DISABLE) + { + WRP01_Data = (uint16_t)(((OB_WRP & WRP01_MASK) | OB->WRP01)); + WRP23_Data = (uint16_t)((((OB_WRP & WRP23_MASK)>>16 | OB->WRP23))); + tmp1 = (uint32_t)(~(WRP01_Data) << 16)|(WRP01_Data); + OB->WRP01 = tmp1; + + tmp2 = (uint32_t)(~(WRP23_Data) << 16)|(WRP23_Data); + OB->WRP23 = tmp2; + } + + else + { + WRP01_Data = (uint16_t)(~OB_WRP & (WRP01_MASK & OB->WRP01)); + WRP23_Data = (uint16_t)((((~OB_WRP & WRP23_MASK)>>16 & OB->WRP23))); + + tmp1 = (uint32_t)((~WRP01_Data) << 16)|(WRP01_Data); + OB->WRP01 = tmp1; + + tmp2 = (uint32_t)((~WRP23_Data) << 16)|(WRP23_Data); + OB->WRP23 = tmp2; + } + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + + /* Return the write protection operation Status */ + return status; +} + +/** + * @brief Write protects the desired pages. + * @note This function can be used only for STM32L1XX_HD and STM32L1XX_MDP + * density devices. + * 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 OB_WRP1: specifies the address of the pages to be write protected. + * This parameter can be: + * @arg value between OB_WRP_Pages512to527 and OB_WRP_Pages1008to1023 + * @arg OB_WRP_AllPages + * @param NewState: new state of the specified FLASH Pages Wtite protection. + * This parameter can be: ENABLE or DISABLE. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_WRP1Config(uint32_t OB_WRP1, FunctionalState NewState) +{ + uint32_t WRP45_Data = 0, WRP67_Data = 0; + + FLASH_Status status = FLASH_COMPLETE; + uint32_t tmp1 = 0, tmp2 = 0; + + /* Check the parameters */ + assert_param(IS_OB_WRP(OB_WRP1)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + if (NewState != DISABLE) + { + WRP45_Data = (uint16_t)(((OB_WRP1 & WRP45_MASK) | OB->WRP45)); + WRP67_Data = (uint16_t)((((OB_WRP1 & WRP67_MASK)>>16 | OB->WRP67))); + tmp1 = (uint32_t)(~(WRP45_Data) << 16)|(WRP45_Data); + OB->WRP45 = tmp1; + + tmp2 = (uint32_t)(~(WRP67_Data) << 16)|(WRP67_Data); + OB->WRP67 = tmp2; + } + + else + { + WRP45_Data = (uint16_t)(~OB_WRP1 & (WRP45_MASK & OB->WRP45)); + WRP67_Data = (uint16_t)((((~OB_WRP1 & WRP67_MASK)>>16 & OB->WRP67))); + + tmp1 = (uint32_t)((~WRP45_Data) << 16)|(WRP45_Data); + OB->WRP45 = tmp1; + + tmp2 = (uint32_t)((~WRP67_Data) << 16)|(WRP67_Data); + OB->WRP67 = tmp2; + } + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + + /* Return the write protection operation Status */ + return status; +} + +/** + * @brief Write protects the desired pages. + * @note This function can be used only for STM32L1XX_HD density devices. + * 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 OB_WRP2: specifies the address of the pages to be write protected. + * This parameter can be: + * @arg value between OB_WRP_Pages1024to1039 and OB_WRP_Pages1520to1535 + * @arg OB_WRP_AllPages + * @param NewState: new state of the specified FLASH Pages Wtite protection. + * This parameter can be: ENABLE or DISABLE. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_WRP2Config(uint32_t OB_WRP2, FunctionalState NewState) +{ + uint32_t WRP89_Data = 0, WRP1011_Data = 0; + + FLASH_Status status = FLASH_COMPLETE; + uint32_t tmp1 = 0, tmp2 = 0; + + /* Check the parameters */ + assert_param(IS_OB_WRP(OB_WRP2)); + assert_param(IS_FUNCTIONAL_STATE(NewState)); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + if (NewState != DISABLE) + { + WRP89_Data = (uint16_t)(((OB_WRP2 & WRP89_MASK) | OB->WRP89)); + WRP1011_Data = (uint16_t)((((OB_WRP2 & WRP1011_MASK)>>16 | OB->WRP1011))); + tmp1 = (uint32_t)(~(WRP89_Data) << 16)|(WRP89_Data); + OB->WRP89 = tmp1; + + tmp2 = (uint32_t)(~(WRP1011_Data) << 16)|(WRP1011_Data); + OB->WRP1011 = tmp2; + } + + else + { + WRP89_Data = (uint16_t)(~OB_WRP2 & (WRP89_MASK & OB->WRP89)); + WRP1011_Data = (uint16_t)((((~OB_WRP2 & WRP1011_MASK)>>16 & OB->WRP1011))); + + tmp1 = (uint32_t)((~WRP89_Data) << 16)|(WRP89_Data); + OB->WRP89 = tmp1; + + tmp2 = (uint32_t)((~WRP1011_Data) << 16)|(WRP1011_Data); + OB->WRP1011 = tmp2; + } + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + } + + /* 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. + * 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; + uint8_t tmp1 = 0; + uint32_t tmp2 = 0; + + /* Check the parameters */ + assert_param(IS_OB_RDP(OB_RDP)); + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* calculate the option byte to write */ + tmp1 = (uint8_t)(~(OB_RDP )); + tmp2 = (uint32_t)(((uint32_t)((uint32_t)(tmp1) << 16)) | ((uint32_t)OB_RDP)); + + if(status == FLASH_COMPLETE) + { + /* program read protection level */ + OB->RDP = tmp2; + } + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Return the Read protection operation Status */ + return status; +} + +/** + * @brief Programs the FLASH User Option Byte: IWDG_SW / RST_STOP / RST_STDBY. + * @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 OB_IWDG: Selects the WDG mode. + * This parameter can be one of the following values: + * @arg OB_IWDG_SW: Software WDG selected + * @arg OB_IWDG_HW: Hardware WDG 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_PROGRAM, 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; + uint32_t tmp = 0, tmp1 = 0; + + /* 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)); + + /* Get the User Option byte register */ + tmp1 = (FLASH->OBR & 0x000F0000) >> 16; + + /* Calculate the user option byte to write */ + tmp = (uint32_t)(((uint32_t)~((uint32_t)((uint32_t)(OB_IWDG) | (uint32_t)(OB_STOP) | (uint32_t)(OB_STDBY) | tmp1))) << ((uint32_t)0x10)); + tmp |= ((uint32_t)(OB_IWDG) | ((uint32_t)OB_STOP) | (uint32_t)(OB_STDBY) | tmp1); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Write the User Option Byte */ + OB->USER = tmp; + } + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Return the Option Byte program Status */ + return status; +} + +/** + * @brief Programs the FLASH brownout reset threshold level Option Byte. + * @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 OB_BOR: Selects the brownout reset threshold level. + * This parameter can be one of the following values: + * @arg OB_BOR_OFF: BOR is disabled at power down, the reset is asserted when the VDD + * power supply reaches the PDR(Power Down Reset) threshold (1.5V) + * @arg OB_BOR_LEVEL1: BOR Reset threshold levels for 1.7V - 1.8V VDD power supply + * @arg OB_BOR_LEVEL2: BOR Reset threshold levels for 1.9V - 2.0V VDD power supply + * @arg OB_BOR_LEVEL3: BOR Reset threshold levels for 2.3V - 2.4V VDD power supply + * @arg OB_BOR_LEVEL4: BOR Reset threshold levels for 2.55V - 2.65V VDD power supply + * @arg OB_BOR_LEVEL5: BOR Reset threshold levels for 2.8V - 2.9V VDD power supply + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_BORConfig(uint8_t OB_BOR) +{ + FLASH_Status status = FLASH_COMPLETE; + uint32_t tmp = 0, tmp1 = 0; + + /* Check the parameters */ + assert_param(IS_OB_BOR_LEVEL(OB_BOR)); + + /* Get the User Option byte register */ + tmp1 = (FLASH->OBR & 0x00F00000) >> 16; + + /* Calculate the option byte to write */ + tmp = (uint32_t)~(OB_BOR | tmp1)<<16; + tmp |= (OB_BOR | tmp1); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Write the BOR Option Byte */ + OB->USER = tmp; + } + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Return the Option Byte program Status */ + return status; +} + +/** + * @brief Configures to boot from Bank1 or Bank2. + * @note This function can be used only for STM32L1XX_HD density devices. + * 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 OB_BOOT: select the FLASH Bank to boot from. + * This parameter can be one of the following values: + * @arg OB_BOOT_BANK2: At startup, if boot pins are set in boot from user Flash + * position and this parameter is selected the device will boot from Bank2 or Bank1, + * depending on the activation of the bank. The active banks are checked in + * the following order: Bank2, followed by Bank1. + * The active bank is recognized by the value programmed at the base address + * of the respective bank (corresponding to the initial stack pointer value + * in the interrupt vector table). + * @arg OB_BOOT_BANK1: At startup, if boot pins are set in boot from user Flash + * position and this parameter is selected the device will boot from Bank1(Default). + * For more information, please refer to AN2606 from www.st.com. + * @retval FLASH Status: The returned value can be: + * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT. + */ +FLASH_Status FLASH_OB_BootConfig(uint8_t OB_BOOT) +{ + FLASH_Status status = FLASH_COMPLETE; + uint32_t tmp = 0, tmp1 = 0; + + /* Check the parameters */ + assert_param(IS_OB_BOOT_BANK(OB_BOOT)); + + /* Get the User Option byte register */ + tmp1 = (FLASH->OBR & 0x007F0000) >> 16; + + /* Calculate the option byte to write */ + tmp = (uint32_t)~(OB_BOOT | tmp1)<<16; + tmp |= (OB_BOOT | tmp1); + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + if(status == FLASH_COMPLETE) + { + /* Write the BOOT Option Byte */ + OB->USER = tmp; + } + + /* Wait for last operation to be completed */ + status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT); + + /* Return the Option Byte 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 >> 20); +} + +/** + * @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 Returns the FLASH Write Protection Option Bytes value. + * @note This function can be used only for STM32L1XX_HD and STM32L1XX_MDP + * density devices. + * @param None + * @retval The FLASH Write Protection Option Bytes value. + */ +uint32_t FLASH_OB_GetWRP1(void) +{ + /* Return the FLASH write protection Register value */ + return (uint32_t)(FLASH->WRPR1); +} + +/** + * @brief Returns the FLASH Write Protection Option Bytes value. + * @note This function can be used only for STM32L1XX_HD density devices. + * @param None + * @retval The FLASH Write Protection Option Bytes value. + */ +uint32_t FLASH_OB_GetWRP2(void) +{ + /* Return the FLASH write protection Register value */ + return (uint32_t)(FLASH->WRPR2); +} + +/** + * @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) != (uint8_t)OB_RDP_Level_0) + { + readstatus = SET; + } + else + { + readstatus = RESET; + } + return readstatus; +} + +/** + * @brief Returns the FLASH BOR level. + * @param None + * @retval The FLASH User Option Bytes. + */ +uint8_t FLASH_OB_GetBOR(void) +{ + /* Return the BOR level */ + return (uint8_t)((FLASH->OBR & (uint32_t)0x000F0000) >> 16); +} + +/** + * @} + */ + +/** @defgroup FLASH_Group5 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->PECR |= FLASH_IT; + } + else + { + /* Disable the interrupt sources */ + FLASH->PECR &= ~(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_EOP: FLASH End of Operation flag + * @arg FLASH_FLAG_READY: FLASH Ready flag after low power mode + * @arg FLASH_FLAG_ENDHV: FLASH End of high voltage flag + * @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag + * @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag + * @arg FLASH_FLAG_SIZERR: FLASH size error flag + * @arg FLASH_FLAG_OPTVERR: FLASH Option validity error flag + * @arg FLASH_FLAG_OPTVERRUSR: FLASH Option User validity error 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_EOP: FLASH End of Operation flag + * @arg FLASH_FLAG_WRPERR: FLASH Write protected error flag + * @arg FLASH_FLAG_PGAERR: FLASH Programming Alignment error flag + * @arg FLASH_FLAG_SIZERR: FLASH size error flag + * @arg FLASH_FLAG_OPTVERR: FLASH Option validity error flag + * @arg FLASH_FLAG_OPTVERRUSR: FLASH Option User validity error 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)0x1E00) != (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) +{ + __IO 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****/ |