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Diff: targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_flash.c
- Revision:
- 144:ef7eb2e8f9f7
- Parent:
- 0:9b334a45a8ff
diff -r 423e1876dc07 -r ef7eb2e8f9f7 targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_flash.c
--- a/targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_flash.c Tue Aug 02 14:07:36 2016 +0000
+++ b/targets/cmsis/TARGET_STM/TARGET_STM32F3/stm32f3xx_hal_flash.c Fri Sep 02 15:07:44 2016 +0100
@@ -1,688 +1,709 @@
-/**
- ******************************************************************************
- * @file stm32f3xx_hal_flash.c
- * @author MCD Application Team
- * @version V1.1.0
- * @date 12-Sept-2014
- * @brief FLASH HAL module driver.
- *
- * This file provides firmware functions to manage the following
- * functionalities of the internal FLASH memory:
- * + Program operations functions
- * + Memory Control functions
- * + Peripheral State functions
- *
- @verbatim
- ==============================================================================
- ##### FLASH peripheral features #####
- ==============================================================================
-
- [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
- to the Flash memory. It implements the erase and program Flash memory operations
- and the read and write protection mechanisms.
-
- [..] The Flash memory interface accelerates code execution with a system of instruction
- prefetch.
-
- [..] The FLASH main features are:
- (+) Flash memory read operations
- (+) Flash memory program/erase operations
- (+) Read / write protections
- (+) Prefetch on I-Code
-
-
- ##### How to use this driver #####
- ==============================================================================
- [..]
- This driver provides functions and macros to configure and program the FLASH
- memory of all STM32F3xx devices. These functions are split in 3 groups:
-
- (#) FLASH Memory I/O Programming functions: this group includes all needed
- functions to erase and program the main memory:
- (++) Lock and Unlock the FLASH interface
- (++) Erase function: Erase page, erase all pages
- (++) Program functions: half word and word
-
- (#) Option Bytes Programming functions: this group includes all needed
- functions to manage the Option Bytes:
- (++) Lock and Unlock the Option Bytes
- (++) Erase Option Bytes
- (++) Set/Reset the write protection
- (++) Set the Read protection Level
- (++) Program the user Option Bytes
- (++) Program the data Option Bytes
- (++) Launch the Option Bytes loader
-
- (#) Interrupts and flags management functions : this group
- includes all needed functions to:
- (++) Handle FLASH interrupts
- (++) Wait for last FLASH operation according to its status
- (++) Get error flag status
-
- [..] In addition to these function, this driver includes a set of macros allowing
- to handle the following operations:
-
- (+) Set the latency
- (+) Enable/Disable the prefetch buffer
- (+) Enable/Disable the half cycle access
- (+) Enable/Disable the FLASH interrupts
- (+) Monitor the FLASH flags status
-
- @endverbatim
- ******************************************************************************
- * @attention
- *
- * <h2><center>© COPYRIGHT(c) 2014 STMicroelectronics</center></h2>
- *
- * Redistribution and use in source and binary forms, with or without modification,
- * are permitted provided that the following conditions are met:
- * 1. Redistributions of source code must retain the above copyright notice,
- * this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright notice,
- * this list of conditions and the following disclaimer in the documentation
- * and/or other materials provided with the distribution.
- * 3. Neither the name of STMicroelectronics nor the names of its contributors
- * may be used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
- * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
- * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
- * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
- * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- *
- ******************************************************************************
- */
-
-/* Includes ------------------------------------------------------------------*/
-#include "stm32f3xx_hal.h"
-
-/** @addtogroup STM32F3xx_HAL_Driver
- * @{
- */
-
-/** @defgroup FLASH FLASH HAL module driver
- * @brief FLASH HAL module driver
- * @{
- */
-
-#ifdef HAL_FLASH_MODULE_ENABLED
-
-/* Private typedef -----------------------------------------------------------*/
-/* Private define ------------------------------------------------------------*/
-/** @defgroup FLASH_Private_Defines FLASH Private Define
- * @{
- */
-#define HAL_FLASH_TIMEOUT_VALUE ((uint32_t)50000)/* 50 s */
-/**
- * @}
- */
-
-/* Private macro -------------------------------------------------------------*/
-/* Private variables ---------------------------------------------------------*/
-/** @defgroup FLASH_Private_Variables FLASH Private Variables
- * @{
- */
-/* Variables used for Erase pages under interruption*/
-FLASH_ProcessTypeDef pFlash;
-/**
- * @}
- */
-
-/* Private function prototypes -----------------------------------------------*/
-/** @defgroup FLASH_Private_Functions FLASH Private Functions
- * @{
- */
-/* Program operations */
-static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data);
-static void FLASH_SetErrorCode(void);
-/**
- * @}
- */
-
-/* Exported functions ---------------------------------------------------------*/
-/** @defgroup FLASH_Exported_Functions FLASH Exported Functions
- * @{
- */
-
-/** @defgroup FLASH_Exported_Functions_Group1 Input and Output operation functions
- * @brief Data transfers functions
- *
-@verbatim
- ===============================================================================
- ##### IO operation functions #####
- ===============================================================================
- [..]
- This subsection provides a set of functions allowing to manage the FLASH
- program operations (write/erase).
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Program halfword, word or double word at a specified address
- * @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
- * The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
- *
- * @note If an erase and a program operations are requested simultaneously,
- * the erase operation is performed before the program one.
- *
- * @param TypeProgram: Indicate the way to program at a specified address.
- * This parameter can be a value of @ref FLASH_Type_Program
- * @param Address: Specifies the address to be programmed.
- * @param Data: Specifies the data to be programmed
- *
- * @retval HAL_StatusTypeDef HAL Status
- */
-HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
-{
- HAL_StatusTypeDef status = HAL_ERROR;
- uint8_t index = 0;
- uint8_t nbiterations = 0;
-
- /* Process Locked */
- __HAL_LOCK(&pFlash);
-
- /* Check the parameters */
- assert_param(IS_TYPEPROGRAM(TypeProgram));
- assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation((uint32_t)HAL_FLASH_TIMEOUT_VALUE);
-
- if(status == HAL_OK)
- {
- if(TypeProgram == TYPEPROGRAM_HALFWORD)
- {
- /* Program halfword (16-bit) at a specified address. */
- nbiterations = 1;
- }
- else if(TypeProgram == TYPEPROGRAM_WORD)
- {
- /* Program word (32-bit = 2*16-bit) at a specified address. */
- nbiterations = 2;
- }
- else
- {
- /* Program double word (64-bit = 4*16-bit) at a specified address. */
- nbiterations = 4;
- }
-
- for (index = 0; index < nbiterations; index++)
- {
- FLASH_Program_HalfWord((Address + (2*index)), (uint16_t)(Data >> (16*index)));
-
- /* Wait for last operation to be completed */
- status = FLASH_WaitForLastOperation((uint32_t)HAL_FLASH_TIMEOUT_VALUE);
-
- /* Check FLASH End of Operation flag */
- if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
- {
- /* Clear FLASH End of Operation pending bit */
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
- }
-
- /* If the program operation is completed, disable the PG Bit */
- CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
- }
- }
-
- /* Process Unlocked */
- __HAL_UNLOCK(&pFlash);
-
- return status;
-}
-
-/**
- * @brief Program halfword, word or double word at a specified address with interrupt enabled.
- * @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
- * The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
- *
- * @note If an erase and a program operations are requested simultaneously,
- * the erase operation is performed before the program one.
- *
- * @param TypeProgram: Indicate the way to program at a specified address.
- * This parameter can be a value of @ref FLASH_Type_Program
- * @param Address: Specifies the address to be programmed.
- * @param Data: Specifies the data to be programmed
- *
- * @retval HAL_StatusTypeDef HAL Status
- */
-HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
-{
- HAL_StatusTypeDef status = HAL_OK;
-
- /* Process Locked */
- __HAL_LOCK(&pFlash);
-
- /* Check the parameters */
- assert_param(IS_TYPEPROGRAM(TypeProgram));
- assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
-
- /* Enable End of FLASH Operation and Error source interrupts */
- __HAL_FLASH_ENABLE_IT((FLASH_IT_EOP | FLASH_IT_ERR));
-
- pFlash.Address = Address;
- pFlash.Data = Data;
-
- if(TypeProgram == TYPEPROGRAM_HALFWORD)
- {
- pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMHALFWORD;
- /*Program halfword (16-bit) at a specified address.*/
- pFlash.DataRemaining = 1;
- }
- else if(TypeProgram == TYPEPROGRAM_WORD)
- {
- pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMWORD;
- /*Program word (32-bit : 2*16-bit) at a specified address.*/
- pFlash.DataRemaining = 2;
- }
- else
- {
- pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMDOUBLEWORD;
- /*Program double word (64-bit : 4*16-bit) at a specified address.*/
- pFlash.DataRemaining = 4;
- }
-
- /*Program halfword (16-bit) at a specified address.*/
- FLASH_Program_HalfWord(Address, (uint16_t)Data);
-
- return status;
-}
-
-/**
- * @brief This function handles FLASH interrupt request.
- * @retval None
- */
-void HAL_FLASH_IRQHandler(void)
-{
- uint32_t addresstmp;
- /* If the operation is completed, disable the PG, PER and MER Bits */
- CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
-
- /* Check FLASH End of Operation flag */
- if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
- {
- /* Clear FLASH End of Operation pending bit */
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
-
- if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
- {
- /* Nb of pages to erased can be decreased */
- pFlash.DataRemaining--;
-
- /* Indicate user which page address has been erased*/
- HAL_FLASH_EndOfOperationCallback(pFlash.Address);
-
- /* Check if there are still pages to erase*/
- if(pFlash.DataRemaining != 0)
- {
- /* Increment page address to next page */
- pFlash.Address += FLASH_PAGE_SIZE;
- addresstmp = pFlash.Address;
- FLASH_PageErase(addresstmp);
- }
- else
- {
- /*No more pages to Erase*/
-
- /*Reset Address and stop Erase pages procedure*/
- pFlash.Address = 0xFFFFFFFF;
- pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
- }
- }
- else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
- {
- /*MassErase ended. Return the selected bank*/
- /* FLASH EOP interrupt user callback */
- HAL_FLASH_EndOfOperationCallback(0);
-
- /* Stop Mass Erase procedure*/
- pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
- }
- else
- {
- /* Nb of 16-bit data to program can be decreased */
- pFlash.DataRemaining--;
-
- /* Check if there are still 16-bit data to program */
- if(pFlash.DataRemaining != 0)
- {
- /* Increment address to 16-bit */
- pFlash.Address += 2;
- addresstmp = pFlash.Address;
-
- /* Shift to have next 16-bit data */
- pFlash.Data = (pFlash.Data >> 16);
-
- /*Program halfword (16-bit) at a specified address.*/
- FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
- }
- else
- {
- /*Program ended. Return the selected address*/
- /* FLASH EOP interrupt user callback */
- if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
- {
- HAL_FLASH_EndOfOperationCallback(pFlash.Address);
- }
- else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
- {
- HAL_FLASH_EndOfOperationCallback(pFlash.Address-2);
- }
- else
- {
- HAL_FLASH_EndOfOperationCallback(pFlash.Address-6);
- }
-
- /* Reset Address and stop Program procedure*/
- pFlash.Address = 0xFFFFFFFF;
- pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
- }
- }
- }
-
- /* Check FLASH operation error flags */
- if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR))
- {
- /*Save the Error code*/
- FLASH_SetErrorCode();
-
- /* FLASH error interrupt user callback */
- HAL_FLASH_OperationErrorCallback(pFlash.Address);
-
- /* Clear FLASH error pending bits */
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR);
-
- /* Reset address and stop the procedure ongoing*/
- pFlash.Address = 0xFFFFFFFF;
- pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
- }
-
- if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
- {
- /* Disable End of FLASH Operation and Error source interrupts */
- __HAL_FLASH_DISABLE_IT((FLASH_IT_EOP | FLASH_IT_ERR));
-
- /* Process Unlocked */
- __HAL_UNLOCK(&pFlash);
- }
-}
-
-
-/**
- * @brief FLASH end of operation interrupt callback
- * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
- * - Mass Erase: No return value expected
- * - Pages Erase: Address of the page which has been erased
- * - Program: Address which was selected for data program
- * @retval none
- */
-__weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
-{
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
- */
-}
-
-/**
- * @brief FLASH operation error interrupt callback
- * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
- * - Mass Erase: No return value expected
- * - Pages Erase: Address of the page which returned an error
- * - Program: Address which was selected for data program
- * @retval none
- */
-__weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
-{
- /* NOTE : This function Should not be modified, when the callback is needed,
- the HAL_FLASH_OperationErrorCallback could be implemented in the user file
- */
-}
-
-/**
- * @}
- */
-
-/** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
- * @brief management functions
- *
-@verbatim
- ===============================================================================
- ##### Peripheral Control functions #####
- ===============================================================================
- [..]
- This subsection provides a set of functions allowing to control the FLASH
- memory operations.
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Unlock the FLASH control register access
- * @retval HAL Status
- */
-HAL_StatusTypeDef HAL_FLASH_Unlock(void)
-{
- if((READ_BIT(FLASH->CR, FLASH_CR_LOCK)) != RESET)
- {
- /* Authorize the FLASH Registers access */
- WRITE_REG(FLASH->KEYR, FLASH_KEY1);
- WRITE_REG(FLASH->KEYR, FLASH_KEY2);
- }
- else
- {
- return HAL_ERROR;
- }
-
- return HAL_OK;
-}
-
-/**
- * @brief Locks the FLASH control register access
- * @retval HAL Status
- */
-HAL_StatusTypeDef HAL_FLASH_Lock(void)
-{
- /* Set the LOCK Bit to lock the FLASH Registers access */
- SET_BIT(FLASH->CR, FLASH_CR_LOCK);
-
- return HAL_OK;
-}
-
-
-/**
- * @brief Unlock the FLASH Option Control Registers access.
- * @retval HAL Status
- */
-HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
-{
- if((READ_BIT(FLASH->CR, FLASH_CR_OPTWRE)) == RESET)
- {
- /* Authorizes the Option Byte register programming */
- WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY1);
- WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY2);
- }
- else
- {
- return HAL_ERROR;
- }
-
- return HAL_OK;
-}
-
-/**
- * @brief Lock the FLASH Option Control Registers access.
- * @retval HAL Status
- */
-HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
-{
- /* Clear the OPTWRE Bit to lock the FLASH Option Byte Registers access */
- CLEAR_BIT(FLASH->CR, FLASH_CR_OPTWRE);
-
- return HAL_OK;
-}
-
-/**
- * @brief Launch the option byte loading.
- * @retval HAL status
- */
-HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
-{
- /* Set the bit to force the option byte reloading */
- SET_BIT(FLASH->CR, FLASH_CR_OBL_LAUNCH);
-
- /* Wait for last operation to be completed */
- return(FLASH_WaitForLastOperation((uint32_t)HAL_FLASH_TIMEOUT_VALUE));
-}
-
-/**
- * @}
- */
-
-
-/** @defgroup FLASH_Exported_Functions_Group3 Peripheral State functions
- * @brief Peripheral State functions
- *
-@verbatim
- ===============================================================================
- ##### Peripheral State functions #####
- ===============================================================================
- [..]
- This subsection permit to get in run-time the status of the FLASH peripheral.
-
-@endverbatim
- * @{
- */
-
-/**
- * @brief Get the specific FLASH error flag.
- * @retval FLASH_ErrorCode: The returned value can be:
- * @arg FLASH_ERROR_PG: FLASH Programming error flag
- * @arg FLASH_ERROR_WRP: FLASH Write protected error flag
- */
-FLASH_ErrorTypeDef HAL_FLASH_GetError(void)
-{
- return pFlash.ErrorCode;
-}
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/** @addtogroup FLASH_Private_Functions FLASH Private Functions
- * @{
- */
-/**
- * @brief Program a half-word (16-bit) at a specified address.
- * @param Address: specifies the address to be programmed.
- * @param Data: specifies the data to be programmed.
- * @retval None
- */
-static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
-{
- /* Clear pending flags (if any) */
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR);
-
- /* Proceed to program the new data */
- SET_BIT(FLASH->CR, FLASH_CR_PG);
-
- *(__IO uint16_t*)Address = Data;
-}
-
-/**
- * @brief Wait for a FLASH operation to complete.
- * @param Timeout: maximum flash operationtimeout
- * @retval HAL_StatusTypeDef HAL Status
- */
-HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
-{
- /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
- Even if the FLASH operation fails, the BUSY flag will be reset and an error
- flag will be set */
-
- uint32_t tickstart = HAL_GetTick();
-
- while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY))
- {
- if (Timeout != HAL_MAX_DELAY)
- {
- if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
- {
- return HAL_TIMEOUT;
- }
- }
- }
-
- if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) || __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
- {
- /*Save the error code*/
- FLASH_SetErrorCode();
- return HAL_ERROR;
- }
-
- /* If there is an error flag set */
- return HAL_OK;
-
-}
-
-/**
- * @brief Erase the specified FLASH memory page
- * @param PageAddress: FLASH page to erase
- * The value of this parameter depend on device used within the same series
- *
- * @retval None
- */
-void FLASH_PageErase(uint32_t PageAddress)
-{
- /* Clear pending flags (if any) */
- __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP | FLASH_FLAG_WRPERR | FLASH_FLAG_PGERR);
-
- /* Proceed to erase the page */
- SET_BIT(FLASH->CR, FLASH_CR_PER);
- WRITE_REG(FLASH->AR, PageAddress);
- SET_BIT(FLASH->CR, FLASH_CR_STRT);
-}
-
-/**
- * @brief Set the specific FLASH error flag.
- * @retval None
- */
-static void FLASH_SetErrorCode(void)
-{
- if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR))
- {
- pFlash.ErrorCode = FLASH_ERROR_WRP;
- }
- if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
- {
- pFlash.ErrorCode |= FLASH_ERROR_PG;
- }
-}
-
-/**
- * @}
- */
-
-#endif /* HAL_FLASH_MODULE_ENABLED */
-
-/**
- * @}
- */
-
-/**
- * @}
- */
-
-/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
+/**
+ ******************************************************************************
+ * @file stm32f3xx_hal_flash.c
+ * @author MCD Application Team
+ * @version V1.3.0
+ * @date 01-July-2016
+ * @brief FLASH HAL module driver.
+ * This file provides firmware functions to manage the following
+ * functionalities of the internal FLASH memory:
+ * + Program operations functions
+ * + Memory Control functions
+ * + Peripheral State functions
+ *
+ @verbatim
+ ==============================================================================
+ ##### FLASH peripheral features #####
+ ==============================================================================
+ [..] The Flash memory interface manages CPU AHB I-Code and D-Code accesses
+ to the Flash memory. It implements the erase and program Flash memory operations
+ and the read and write protection mechanisms.
+
+ [..] The Flash memory interface accelerates code execution with a system of instruction
+ prefetch.
+
+ [..] The FLASH main features are:
+ (+) Flash memory read operations
+ (+) Flash memory program/erase operations
+ (+) Read / write protections
+ (+) Prefetch on I-Code
+ (+) Option Bytes programming
+
+
+ ##### How to use this driver #####
+ ==============================================================================
+ [..]
+ This driver provides functions and macros to configure and program the FLASH
+ memory of all STM32F3xx devices.
+
+ (#) FLASH Memory I/O Programming functions: this group includes all needed
+ functions to erase and program the main memory:
+ (++) Lock and Unlock the FLASH interface
+ (++) Erase function: Erase page, erase all pages
+ (++) Program functions: half word, word and doubleword
+ (#) FLASH Option Bytes Programming functions: this group includes all needed
+ functions to manage the Option Bytes:
+ (++) Lock and Unlock the Option Bytes
+ (++) Set/Reset the write protection
+ (++) Set the Read protection Level
+ (++) Program the user Option Bytes
+ (++) Launch the Option Bytes loader
+ (++) Erase Option Bytes
+ (++) Program the data Option Bytes
+ (++) Get the Write protection.
+ (++) Get the user option bytes.
+
+ (#) Interrupts and flags management functions : this group
+ includes all needed functions to:
+ (++) Handle FLASH interrupts
+ (++) Wait for last FLASH operation according to its status
+ (++) Get error flag status
+
+ [..] In addition to these function, this driver includes a set of macros allowing
+ to handle the following operations:
+
+ (+) Set/Get the latency
+ (+) Enable/Disable the prefetch buffer
+ (+) Enable/Disable the half cycle access
+ (+) Enable/Disable the FLASH interrupts
+ (+) Monitor the FLASH flags status
+
+ @endverbatim
+ ******************************************************************************
+ * @attention
+ *
+ * <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
+ *
+ * Redistribution and use in source and binary forms, with or without modification,
+ * are permitted provided that the following conditions are met:
+ * 1. Redistributions of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright notice,
+ * this list of conditions and the following disclaimer in the documentation
+ * and/or other materials provided with the distribution.
+ * 3. Neither the name of STMicroelectronics nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
+ * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
+ * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
+ * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ ******************************************************************************
+ */
+
+/* Includes ------------------------------------------------------------------*/
+#include "stm32f3xx_hal.h"
+
+/** @addtogroup STM32F3xx_HAL_Driver
+ * @{
+ */
+
+#ifdef HAL_FLASH_MODULE_ENABLED
+
+/** @defgroup FLASH FLASH
+ * @brief FLASH HAL module driver
+ * @{
+ */
+
+/* Private typedef -----------------------------------------------------------*/
+/* Private define ------------------------------------------------------------*/
+/** @defgroup FLASH_Private_Constants FLASH Private Constants
+ * @{
+ */
+/**
+ * @}
+ */
+
+/* Private macro ---------------------------- ---------------------------------*/
+/** @defgroup FLASH_Private_Macros FLASH Private Macros
+ * @{
+ */
+
+/**
+ * @}
+ */
+
+/* Private variables ---------------------------------------------------------*/
+/** @defgroup FLASH_Private_Variables FLASH Private Variables
+ * @{
+ */
+/* Variables used for Erase pages under interruption*/
+FLASH_ProcessTypeDef pFlash;
+/**
+ * @}
+ */
+
+/* Private function prototypes -----------------------------------------------*/
+/** @defgroup FLASH_Private_Functions FLASH Private Functions
+ * @{
+ */
+static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data);
+static void FLASH_SetErrorCode(void);
+extern void FLASH_PageErase(uint32_t PageAddress);
+/**
+ * @}
+ */
+
+/* Exported functions ---------------------------------------------------------*/
+/** @defgroup FLASH_Exported_Functions FLASH Exported Functions
+ * @{
+ */
+
+/** @defgroup FLASH_Exported_Functions_Group1 Programming operation functions
+ * @brief Programming operation functions
+ *
+@verbatim
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Program halfword, word or double word at a specified address
+ * @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
+ * The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
+ *
+ * @note If an erase and a program operations are requested simultaneously,
+ * the erase operation is performed before the program one.
+ *
+ * @note FLASH should be previously erased before new programmation (only exception to this
+ * is when 0x0000 is programmed)
+ *
+ * @param TypeProgram: Indicate the way to program at a specified address.
+ * This parameter can be a value of @ref FLASH_Type_Program
+ * @param Address: Specifies the address to be programmed.
+ * @param Data: Specifies the data to be programmed
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Program(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
+{
+ HAL_StatusTypeDef status = HAL_ERROR;
+ uint8_t index = 0;
+ uint8_t nbiterations = 0;
+
+ /* Process Locked */
+ __HAL_LOCK(&pFlash);
+
+ /* Check the parameters */
+ assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ if(status == HAL_OK)
+ {
+ if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
+ {
+ /* Program halfword (16-bit) at a specified address. */
+ nbiterations = 1;
+ }
+ else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
+ {
+ /* Program word (32-bit = 2*16-bit) at a specified address. */
+ nbiterations = 2;
+ }
+ else
+ {
+ /* Program double word (64-bit = 4*16-bit) at a specified address. */
+ nbiterations = 4;
+ }
+
+ for (index = 0; index < nbiterations; index++)
+ {
+ FLASH_Program_HalfWord((Address + (2*index)), (uint16_t)(Data >> (16*index)));
+
+ /* Wait for last operation to be completed */
+ status = FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE);
+
+ /* If the program operation is completed, disable the PG Bit */
+ CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
+ /* In case of error, stop programation procedure */
+ if (status != HAL_OK)
+ {
+ break;
+ }
+ }
+ }
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+
+ return status;
+}
+
+/**
+ * @brief Program halfword, word or double word at a specified address with interrupt enabled.
+ * @note The function HAL_FLASH_Unlock() should be called before to unlock the FLASH interface
+ * The function HAL_FLASH_Lock() should be called after to lock the FLASH interface
+ *
+ * @note If an erase and a program operations are requested simultaneously,
+ * the erase operation is performed before the program one.
+ *
+ * @param TypeProgram: Indicate the way to program at a specified address.
+ * This parameter can be a value of @ref FLASH_Type_Program
+ * @param Address: Specifies the address to be programmed.
+ * @param Data: Specifies the data to be programmed
+ *
+ * @retval HAL_StatusTypeDef HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Program_IT(uint32_t TypeProgram, uint32_t Address, uint64_t Data)
+{
+ HAL_StatusTypeDef status = HAL_OK;
+
+ /* Process Locked */
+ __HAL_LOCK(&pFlash);
+
+ /* Check the parameters */
+ assert_param(IS_FLASH_TYPEPROGRAM(TypeProgram));
+ assert_param(IS_FLASH_PROGRAM_ADDRESS(Address));
+
+ /* Enable End of FLASH Operation and Error source interrupts */
+ __HAL_FLASH_ENABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
+
+ pFlash.Address = Address;
+ pFlash.Data = Data;
+
+ if(TypeProgram == FLASH_TYPEPROGRAM_HALFWORD)
+ {
+ pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMHALFWORD;
+ /* Program halfword (16-bit) at a specified address. */
+ pFlash.DataRemaining = 1;
+ }
+ else if(TypeProgram == FLASH_TYPEPROGRAM_WORD)
+ {
+ pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMWORD;
+ /* Program word (32-bit : 2*16-bit) at a specified address. */
+ pFlash.DataRemaining = 2;
+ }
+ else
+ {
+ pFlash.ProcedureOnGoing = FLASH_PROC_PROGRAMDOUBLEWORD;
+ /* Program double word (64-bit : 4*16-bit) at a specified address. */
+ pFlash.DataRemaining = 4;
+ }
+
+ /* Program halfword (16-bit) at a specified address. */
+ FLASH_Program_HalfWord(Address, (uint16_t)Data);
+
+ return status;
+}
+
+/**
+ * @brief This function handles FLASH interrupt request.
+ * @retval None
+ */
+void HAL_FLASH_IRQHandler(void)
+{
+ uint32_t addresstmp = 0;
+
+ /* Check FLASH operation error flags */
+ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
+ {
+ /* Return the faulty address */
+ addresstmp = pFlash.Address;
+ /* Reset address */
+ pFlash.Address = 0xFFFFFFFFU;
+
+ /* Save the Error code */
+ FLASH_SetErrorCode();
+
+ /* FLASH error interrupt user callback */
+ HAL_FLASH_OperationErrorCallback(addresstmp);
+
+ /* Stop the procedure ongoing */
+ pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
+ }
+
+ /* Check FLASH End of Operation flag */
+ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
+ {
+ /* Clear FLASH End of Operation pending bit */
+ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
+
+ /* Process can continue only if no error detected */
+ if(pFlash.ProcedureOnGoing != FLASH_PROC_NONE)
+ {
+ if(pFlash.ProcedureOnGoing == FLASH_PROC_PAGEERASE)
+ {
+ /* Nb of pages to erased can be decreased */
+ pFlash.DataRemaining--;
+
+ /* Check if there are still pages to erase */
+ if(pFlash.DataRemaining != 0)
+ {
+ addresstmp = pFlash.Address;
+ /*Indicate user which sector has been erased */
+ HAL_FLASH_EndOfOperationCallback(addresstmp);
+
+ /*Increment sector number*/
+ addresstmp = pFlash.Address + FLASH_PAGE_SIZE;
+ pFlash.Address = addresstmp;
+
+ /* If the erase operation is completed, disable the PER Bit */
+ CLEAR_BIT(FLASH->CR, FLASH_CR_PER);
+
+ FLASH_PageErase(addresstmp);
+ }
+ else
+ {
+ /* No more pages to Erase, user callback can be called. */
+ /* Reset Sector and stop Erase pages procedure */
+ pFlash.Address = addresstmp = 0xFFFFFFFFU;
+ pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
+ /* FLASH EOP interrupt user callback */
+ HAL_FLASH_EndOfOperationCallback(addresstmp);
+ }
+ }
+ else if(pFlash.ProcedureOnGoing == FLASH_PROC_MASSERASE)
+ {
+ /* Operation is completed, disable the MER Bit */
+ CLEAR_BIT(FLASH->CR, FLASH_CR_MER);
+
+ /* MassErase ended. Return the selected bank */
+ /* FLASH EOP interrupt user callback */
+ HAL_FLASH_EndOfOperationCallback(0);
+
+ /* Stop Mass Erase procedure*/
+ pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
+ }
+ else
+ {
+ /* Nb of 16-bit data to program can be decreased */
+ pFlash.DataRemaining--;
+
+ /* Check if there are still 16-bit data to program */
+ if(pFlash.DataRemaining != 0)
+ {
+ /* Increment address to 16-bit */
+ pFlash.Address += 2;
+ addresstmp = pFlash.Address;
+
+ /* Shift to have next 16-bit data */
+ pFlash.Data = (pFlash.Data >> 16);
+
+ /* Operation is completed, disable the PG Bit */
+ CLEAR_BIT(FLASH->CR, FLASH_CR_PG);
+
+ /*Program halfword (16-bit) at a specified address.*/
+ FLASH_Program_HalfWord(addresstmp, (uint16_t)pFlash.Data);
+ }
+ else
+ {
+ /* Program ended. Return the selected address */
+ /* FLASH EOP interrupt user callback */
+ if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMHALFWORD)
+ {
+ HAL_FLASH_EndOfOperationCallback(pFlash.Address);
+ }
+ else if (pFlash.ProcedureOnGoing == FLASH_PROC_PROGRAMWORD)
+ {
+ HAL_FLASH_EndOfOperationCallback(pFlash.Address - 2);
+ }
+ else
+ {
+ HAL_FLASH_EndOfOperationCallback(pFlash.Address - 6);
+ }
+
+ /* Reset Address and stop Program procedure */
+ pFlash.Address = 0xFFFFFFFFU;
+ pFlash.ProcedureOnGoing = FLASH_PROC_NONE;
+ }
+ }
+ }
+ }
+
+
+ if(pFlash.ProcedureOnGoing == FLASH_PROC_NONE)
+ {
+ /* Operation is completed, disable the PG, PER and MER Bits */
+ CLEAR_BIT(FLASH->CR, (FLASH_CR_PG | FLASH_CR_PER | FLASH_CR_MER));
+
+ /* Disable End of FLASH Operation and Error source interrupts */
+ __HAL_FLASH_DISABLE_IT(FLASH_IT_EOP | FLASH_IT_ERR);
+
+ /* Process Unlocked */
+ __HAL_UNLOCK(&pFlash);
+ }
+}
+
+/**
+ * @brief FLASH end of operation interrupt callback
+ * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
+ * - Mass Erase: No return value expected
+ * - Pages Erase: Address of the page which has been erased
+ * (if 0xFFFFFFFF, it means that all the selected pages have been erased)
+ * - Program: Address which was selected for data program
+ * @retval none
+ */
+__weak void HAL_FLASH_EndOfOperationCallback(uint32_t ReturnValue)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(ReturnValue);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_FLASH_EndOfOperationCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @brief FLASH operation error interrupt callback
+ * @param ReturnValue: The value saved in this parameter depends on the ongoing procedure
+ * - Mass Erase: No return value expected
+ * - Pages Erase: Address of the page which returned an error
+ * - Program: Address which was selected for data program
+ * @retval none
+ */
+__weak void HAL_FLASH_OperationErrorCallback(uint32_t ReturnValue)
+{
+ /* Prevent unused argument(s) compilation warning */
+ UNUSED(ReturnValue);
+
+ /* NOTE : This function Should not be modified, when the callback is needed,
+ the HAL_FLASH_OperationErrorCallback could be implemented in the user file
+ */
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASH_Exported_Functions_Group2 Peripheral Control functions
+ * @brief management functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Control functions #####
+ ===============================================================================
+ [..]
+ This subsection provides a set of functions allowing to control the FLASH
+ memory operations.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Unlock the FLASH control register access
+ * @retval HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Unlock(void)
+{
+ if (HAL_IS_BIT_SET(FLASH->CR, FLASH_CR_LOCK))
+ {
+ /* Authorize the FLASH Registers access */
+ WRITE_REG(FLASH->KEYR, FLASH_KEY1);
+ WRITE_REG(FLASH->KEYR, FLASH_KEY2);
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Locks the FLASH control register access
+ * @retval HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_Lock(void)
+{
+ /* Set the LOCK Bit to lock the FLASH Registers access */
+ SET_BIT(FLASH->CR, FLASH_CR_LOCK);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Unlock the FLASH Option Control Registers access.
+ * @retval HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_OB_Unlock(void)
+{
+ if (HAL_IS_BIT_CLR(FLASH->CR, FLASH_CR_OPTWRE))
+ {
+ /* Authorizes the Option Byte register programming */
+ WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY1);
+ WRITE_REG(FLASH->OPTKEYR, FLASH_OPTKEY2);
+ }
+ else
+ {
+ return HAL_ERROR;
+ }
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Lock the FLASH Option Control Registers access.
+ * @retval HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_OB_Lock(void)
+{
+ /* Clear the OPTWRE Bit to lock the FLASH Option Byte Registers access */
+ CLEAR_BIT(FLASH->CR, FLASH_CR_OPTWRE);
+
+ return HAL_OK;
+}
+
+/**
+ * @brief Launch the option byte loading.
+ * @note This function will reset automatically the MCU.
+ * @retval HAL Status
+ */
+HAL_StatusTypeDef HAL_FLASH_OB_Launch(void)
+{
+ /* Set the OBL_Launch bit to launch the option byte loading */
+ SET_BIT(FLASH->CR, FLASH_CR_OBL_LAUNCH);
+
+ /* Wait for last operation to be completed */
+ return(FLASH_WaitForLastOperation(FLASH_TIMEOUT_VALUE));
+}
+
+/**
+ * @}
+ */
+
+/** @defgroup FLASH_Exported_Functions_Group3 Peripheral errors functions
+ * @brief Peripheral errors functions
+ *
+@verbatim
+ ===============================================================================
+ ##### Peripheral Errors functions #####
+ ===============================================================================
+ [..]
+ This subsection permit to get in run-time errors of the FLASH peripheral.
+
+@endverbatim
+ * @{
+ */
+
+/**
+ * @brief Get the specific FLASH error flag.
+ * @retval FLASH_ErrorCode The returned value can be:
+ * @ref FLASH_Error_Codes
+ */
+uint32_t HAL_FLASH_GetError(void)
+{
+ return pFlash.ErrorCode;
+}
+
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/** @addtogroup FLASH_Private_Functions
+ * @{
+ */
+
+/**
+ * @brief Program a half-word (16-bit) at a specified address.
+ * @param Address specify the address to be programmed.
+ * @param Data specify the data to be programmed.
+ * @retval None
+ */
+static void FLASH_Program_HalfWord(uint32_t Address, uint16_t Data)
+{
+ /* Clean the error context */
+ pFlash.ErrorCode = HAL_FLASH_ERROR_NONE;
+
+ /* Proceed to program the new data */
+ SET_BIT(FLASH->CR, FLASH_CR_PG);
+
+ /* Write data in the address */
+ *(__IO uint16_t*)Address = Data;
+}
+
+/**
+ * @brief Wait for a FLASH operation to complete.
+ * @param Timeout maximum flash operation timeout
+ * @retval HAL Status
+ */
+HAL_StatusTypeDef FLASH_WaitForLastOperation(uint32_t Timeout)
+{
+ /* Wait for the FLASH operation to complete by polling on BUSY flag to be reset.
+ Even if the FLASH operation fails, the BUSY flag will be reset and an error
+ flag will be set */
+
+ uint32_t tickstart = HAL_GetTick();
+
+ while(__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY))
+ {
+ if (Timeout != HAL_MAX_DELAY)
+ {
+ if((Timeout == 0) || ((HAL_GetTick()-tickstart) > Timeout))
+ {
+ return HAL_TIMEOUT;
+ }
+ }
+ }
+
+ /* Check FLASH End of Operation flag */
+ if (__HAL_FLASH_GET_FLAG(FLASH_FLAG_EOP))
+ {
+ /* Clear FLASH End of Operation pending bit */
+ __HAL_FLASH_CLEAR_FLAG(FLASH_FLAG_EOP);
+ }
+
+ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR) ||
+ __HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
+ {
+ /*Save the error code*/
+ FLASH_SetErrorCode();
+ return HAL_ERROR;
+ }
+
+ /* There is no error flag set */
+ return HAL_OK;
+}
+
+
+/**
+ * @brief Set the specific FLASH error flag.
+ * @retval None
+ */
+static void FLASH_SetErrorCode(void)
+{
+ uint32_t flags = 0;
+
+ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_WRPERR))
+ {
+ pFlash.ErrorCode |= HAL_FLASH_ERROR_WRP;
+ flags |= FLASH_FLAG_WRPERR;
+ }
+ if(__HAL_FLASH_GET_FLAG(FLASH_FLAG_PGERR))
+ {
+ pFlash.ErrorCode |= HAL_FLASH_ERROR_PROG;
+ flags |= FLASH_FLAG_PGERR;
+ }
+ /* Clear FLASH error pending bits */
+ __HAL_FLASH_CLEAR_FLAG(flags);
+}
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+#endif /* HAL_FLASH_MODULE_ENABLED */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/