Peter Drescher
mbed library with additional peripherals for ST F401 board
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mbed official
This mbed LIB has additional peripherals for ST F401 board
- UART2 : PA_3 rx, PA_2 tx
- UART3 : PC_7 rx, PC_6 tx
- I2C2 : PB_3 SDA, PB_10 SCL
- I2C3 : PB_4 SDA, PA_8 SCL
Diff: targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_flash.c
- Revision:
- 76:aeb1df146756
- Child:
- 80:66393a7b209d
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_NUCLEO_L152RE/stm32l1xx_flash.c Mon Jan 27 14:30:07 2014 +0000
@@ -0,0 +1,1843 @@
+/**
+ ******************************************************************************
+ * @file stm32l1xx_flash.c
+ * @author MCD Application Team
+ * @version V1.2.0
+ * @date 22-February-2013
+ * @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 2013 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_PCROPConfig(uint32_t OB_WRP, FunctionalState NewState);
+ (+) FLASH_Status FLASH_OB_PCROP1Config(uint32_t OB_WRP1, FunctionalState NewState);
+ (+) FLASH_Status FLASH_OB_PCROPSelectionConfig(uint16_t OB_PcROP);
+ (+) 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);
+ (+) FlagStatus FLASH_OB_GetSPRMOD(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.
+ (#) 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).
+
+ [..] Proprietary code Read Out Protection (PcROP):
+ (#) The PcROP sector is selected by using the same option bytes as the Write
+ protection (nWRPi bits). As a result, these 2 options are exclusive each other.
+ (#) In order to activate the PcROP (change the function of the nWRPi option bits),
+ the SPRMOD option bit must be activated.
+ (#) The active value of nWRPi bits is inverted when PCROP mode is active, this
+ means: if SPRMOD = 1 and nWRPi = 1 (default value), then the user sector "i"
+ is read/write protected.
+ (#) To activate PCROP mode for Flash sector(s), you need to follow the sequence below:
+ (++) For sector(s) within the first 128KB of the Flash, use this function
+ FLASH_OB_PCROPConfig(OB_WRP_Pagesxxx, ENABLE)
+ (++) For sector(s) within the second 128KB of the Flash, use this function
+ FLASH_OB_PCROP1Config(OB_WRP_Pagesxxx, ENABLE)
+ (++) Activate the PCROP mode using FLASH_OB_PCROPSelectionConfig(OB_PcROP_Enable) function
+ (#) PcROP is available only in STM32L1XX_MDP devices
+
+@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 of the first 128KB of the Flash.
+ * @param OB_WRP: specifies the address of the pages to be write protected.
+ * This parameter can be:
+ * @arg value between OB_WRP_Pages0to15 and OB_WRP_Pages496to511
+ * @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_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 of the second 128KB of the Flash.
+ * @note This function can be used only for STM32L1XX_HD and STM32L1XX_MDP
+ * density devices.
+ * @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 of the third 128KB of the Flash.
+ * @note This function can be used only for STM32L1XX_HD density devices.
+ * @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.
+ * @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
+ *
+ * !!!Warning!!! When enabling OB_RDP_Level_2 it's no more possible to go back to level 1 or 0
+ *
+ * @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 Enables or disables the read/write protection (PCROP) of the desired
+ * sectors, for the first 128KB of the Flash.
+ * @note This function can be used only for STM32L1XX_MDP devices
+ * @param OB_WRP: specifies the address of the pages to be write protected.
+ * This parameter can be:
+ * @arg value between OB_WRP_Pages0to15 and OB_WRP_Pages496to511
+ * @arg OB_WRP_AllPages
+ * @param NewState: new state of the specified FLASH Pages Write 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_PCROPConfig(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 Enables or disables the read/write protection (PCROP) of the desired
+ * sectors, for the second 128KB of the Flash.
+ * @note This function can be used only for STM32L1XX_MDP devices
+ * @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 Write 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_PCROP1Config(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 Select the Protection Mode (SPRMOD).
+ * @note This function can be used only for STM32L1XX_MDP devices
+ * @note Once SPRMOD bit is active, unprotection of a protected sector is not possible
+ * @note Read a protected sector will set RDERR Flag and write a protected sector will set WRPERR Flag
+ * @param OB_PcROP: Select the Protection Mode of nWPRi bits.
+ * This parameter can be:
+ * @arg OB_PcROP_Enable: nWRPi control the read&write protection (PcROP) of respective user sectors.
+ * @arg OB_PcROP_Disable: nWRPi control the write protection of respective user sectors.
+ * @retval FLASH Status: The returned value can be:
+ * FLASH_ERROR_PROGRAM, FLASH_ERROR_WRP, FLASH_COMPLETE or FLASH_TIMEOUT.
+ */
+FLASH_Status FLASH_OB_PCROPSelectionConfig(uint16_t OB_PcROP)
+{
+ FLASH_Status status = FLASH_COMPLETE;
+ uint16_t tmp1 = 0;
+ uint32_t tmp2 = 0;
+ uint8_t optiontmp = 0;
+ uint16_t optiontmp2 = 0;
+
+ /* Check the parameters */
+ assert_param(IS_OB_PCROP_SELECT(OB_PcROP));
+ status = FLASH_WaitForLastOperation(FLASH_ER_PRG_TIMEOUT);
+
+ /* Mask RDP Byte */
+ optiontmp = (uint8_t)(*(__IO uint8_t *)(OB_BASE));
+
+ /* Update Option Byte */
+ optiontmp2 = (uint16_t)(OB_PcROP | optiontmp);
+
+
+ /* calculate the option byte to write */
+ tmp1 = (uint16_t)(~(optiontmp2 ));
+ tmp2 = (uint32_t)(((uint32_t)((uint32_t)(tmp1) << 16)) | ((uint32_t)optiontmp2));
+
+ if(status == FLASH_COMPLETE)
+ {
+ /* program PCRop */
+ 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.
+ * @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.
+ * @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.
+ * @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 SPRMOD Status.
+ * @note This function can be used only for STM32L1XX_MDP devices
+ * @param None
+ * @retval The SPRMOD Status.
+ */
+FlagStatus FLASH_OB_GetSPRMOD(void)
+{
+ FlagStatus readstatus = RESET;
+ uint16_t tmp = 0;
+
+ /* Return the SPRMOD value */
+ tmp = (uint16_t)(FLASH->OBR & (uint16_t)(0x0100));
+
+ if (tmp != (uint16_t)0x0000)
+ {
+ 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
+ * @arg FLASH_FLAG_RDERR: FLASH Read protected error flag (available only in STM32L1XX_MDP devices)
+ * @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
+ * @arg FLASH_FLAG_RDERR: FLASH Read protected error flag (available only in STM32L1XX_MDP devices)
+ * @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****/