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Diffstat (limited to 'project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash_ramfunc.c')
| -rw-r--r-- | project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash_ramfunc.c | 251 |
1 files changed, 251 insertions, 0 deletions
diff --git a/project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash_ramfunc.c b/project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash_ramfunc.c new file mode 100644 index 0000000..82599f9 --- /dev/null +++ b/project/Drivers/STM32L4xx_HAL_Driver/Src/stm32l4xx_hal_flash_ramfunc.c @@ -0,0 +1,251 @@ +/** + ****************************************************************************** + * @file stm32l4xx_hal_flash_ramfunc.c + * @author MCD Application Team + * @brief FLASH RAMFUNC driver. + * This file provides a Flash firmware functions which should be + * executed from internal SRAM + * + FLASH HalfPage Programming + * + FLASH Power Down in Run mode + * + * @verbatim + ============================================================================== + ##### Flash RAM functions ##### + ============================================================================== + + *** ARM Compiler *** + -------------------- + [..] RAM functions are defined using the toolchain options. + Functions that are executed in RAM should reside in a separate + source module. Using the 'Options for File' dialog you can simply change + the 'Code / Const' area of a module to a memory space in physical RAM. + Available memory areas are declared in the 'Target' tab of the + Options for Target' dialog. + + *** ICCARM Compiler *** + ----------------------- + [..] RAM functions are defined using a specific toolchain keyword "__ramfunc". + + *** GNU Compiler *** + -------------------- + [..] RAM functions are defined using a specific toolchain attribute + "__attribute__((section(".RamFunc")))". + + @endverbatim + ****************************************************************************** + * @attention + * + * Copyright (c) 2017 STMicroelectronics. + * All rights reserved. + * + * This software is licensed under terms that can be found in the LICENSE file in + * the root directory of this software component. + * If no LICENSE file comes with this software, it is provided AS-IS. + ****************************************************************************** + */ + +/* Includes ------------------------------------------------------------------*/ +#include "stm32l4xx_hal.h" + +/** @addtogroup STM32L4xx_HAL_Driver + * @{ + */ + +/** @defgroup FLASH_RAMFUNC FLASH_RAMFUNC + * @brief FLASH functions executed from RAM + * @{ + */ + +#ifdef HAL_FLASH_MODULE_ENABLED + +/* Private typedef -----------------------------------------------------------*/ +/* Private define ------------------------------------------------------------*/ +/* Private macro -------------------------------------------------------------*/ +/* Private variables ---------------------------------------------------------*/ +/* Private function prototypes -----------------------------------------------*/ +/* Exported functions -------------------------------------------------------*/ + +/** @defgroup FLASH_RAMFUNC_Exported_Functions FLASH in RAM function Exported Functions + * @{ + */ + +/** @defgroup FLASH_RAMFUNC_Exported_Functions_Group1 Peripheral features functions + * @brief Data transfers functions + * +@verbatim + =============================================================================== + ##### ramfunc functions ##### + =============================================================================== + [..] + This subsection provides a set of functions that should be executed from RAM. + +@endverbatim + * @{ + */ + +/** + * @brief Enable the Power down in Run Mode + * @note This function should be called and executed from SRAM memory + * @retval HAL status + */ +__RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_EnableRunPowerDown(void) +{ + /* Enable the Power Down in Run mode*/ + __HAL_FLASH_POWER_DOWN_ENABLE(); + + return HAL_OK; + +} + +/** + * @brief Disable the Power down in Run Mode + * @note This function should be called and executed from SRAM memory + * @retval HAL status + */ +__RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_DisableRunPowerDown(void) +{ + /* Disable the Power Down in Run mode*/ + __HAL_FLASH_POWER_DOWN_DISABLE(); + + return HAL_OK; +} + +#if defined (STM32L4P5xx) || defined (STM32L4Q5xx) || defined (STM32L4R5xx) || defined (STM32L4R7xx) || defined (STM32L4R9xx) || defined (STM32L4S5xx) || defined (STM32L4S7xx) || defined (STM32L4S9xx) +/** + * @brief Program the FLASH DBANK User Option Byte. + * + * @note To configure the user option bytes, the option lock bit OPTLOCK must + * be cleared with the call of the HAL_FLASH_OB_Unlock() function. + * @note To modify the DBANK option byte, no PCROP region should be defined. + * To deactivate PCROP, user should perform RDP changing + * + * @param DBankConfig The FLASH DBANK User Option Byte value. + * This parameter can be one of the following values: + * @arg OB_DBANK_128_BITS: Single-bank with 128-bits data + * @arg OB_DBANK_64_BITS: Dual-bank with 64-bits data + * + * @retval HAL status + */ +__RAM_FUNC HAL_StatusTypeDef HAL_FLASHEx_OB_DBankConfig(uint32_t DBankConfig) +{ + uint32_t count, reg; + HAL_StatusTypeDef status = HAL_ERROR; + + /* Process Locked */ + __HAL_LOCK(&pFlash); + + /* Check if the PCROP is disabled */ + reg = FLASH->PCROP1SR; + if (reg > FLASH->PCROP1ER) + { + reg = FLASH->PCROP2SR; + if (reg > FLASH->PCROP2ER) + { + /* Disable Flash prefetch */ + __HAL_FLASH_PREFETCH_BUFFER_DISABLE(); + + if (READ_BIT(FLASH->ACR, FLASH_ACR_ICEN) != 0U) + { + /* Disable Flash instruction cache */ + __HAL_FLASH_INSTRUCTION_CACHE_DISABLE(); + + /* Flush Flash instruction cache */ + __HAL_FLASH_INSTRUCTION_CACHE_RESET(); + } + + if (READ_BIT(FLASH->ACR, FLASH_ACR_DCEN) != 0U) + { + /* Disable Flash data cache */ + __HAL_FLASH_DATA_CACHE_DISABLE(); + + /* Flush Flash data cache */ + __HAL_FLASH_DATA_CACHE_RESET(); + } + + /* Disable WRP zone 1 of 1st bank if needed */ + reg = FLASH->WRP1AR; + if (((reg & FLASH_WRP1AR_WRP1A_STRT) >> FLASH_WRP1AR_WRP1A_STRT_Pos) <= + ((reg & FLASH_WRP1AR_WRP1A_END) >> FLASH_WRP1AR_WRP1A_END_Pos)) + { + MODIFY_REG(FLASH->WRP1AR, (FLASH_WRP1AR_WRP1A_STRT | FLASH_WRP1AR_WRP1A_END), FLASH_WRP1AR_WRP1A_STRT); + } + + /* Disable WRP zone 2 of 1st bank if needed */ + reg = FLASH->WRP1BR; + if (((reg & FLASH_WRP1BR_WRP1B_STRT) >> FLASH_WRP1BR_WRP1B_STRT_Pos) <= + ((reg & FLASH_WRP1BR_WRP1B_END) >> FLASH_WRP1BR_WRP1B_END_Pos)) + { + MODIFY_REG(FLASH->WRP1BR, (FLASH_WRP1BR_WRP1B_STRT | FLASH_WRP1BR_WRP1B_END), FLASH_WRP1BR_WRP1B_STRT); + } + + /* Disable WRP zone 1 of 2nd bank if needed */ + reg = FLASH->WRP2AR; + if (((reg & FLASH_WRP2AR_WRP2A_STRT) >> FLASH_WRP2AR_WRP2A_STRT_Pos) <= + ((reg & FLASH_WRP2AR_WRP2A_END) >> FLASH_WRP2AR_WRP2A_END_Pos)) + { + MODIFY_REG(FLASH->WRP2AR, (FLASH_WRP2AR_WRP2A_STRT | FLASH_WRP2AR_WRP2A_END), FLASH_WRP2AR_WRP2A_STRT); + } + + /* Disable WRP zone 2 of 2nd bank if needed */ + reg = FLASH->WRP2BR; + if (((reg & FLASH_WRP2BR_WRP2B_STRT) >> FLASH_WRP2BR_WRP2B_STRT_Pos) <= + ((reg & FLASH_WRP2BR_WRP2B_END) >> FLASH_WRP2BR_WRP2B_END_Pos)) + { + MODIFY_REG(FLASH->WRP2BR, (FLASH_WRP2BR_WRP2B_STRT | FLASH_WRP2BR_WRP2B_END), FLASH_WRP2BR_WRP2B_STRT); + } + + /* Modify the DBANK user option byte */ + MODIFY_REG(FLASH->OPTR, FLASH_OPTR_DBANK, DBankConfig); + + /* Set OPTSTRT Bit */ + SET_BIT(FLASH->CR, FLASH_CR_OPTSTRT); + + /* Wait for last operation to be completed */ + /* 8 is the number of required instruction cycles for the below loop statement (timeout expressed in ms) */ + count = FLASH_TIMEOUT_VALUE * (SystemCoreClock / 8U / 1000U); + do + { + if (count == 0U) + { + break; + } + count--; + } while (__HAL_FLASH_GET_FLAG(FLASH_FLAG_BSY) != RESET); + + /* If the option byte program operation is completed, disable the OPTSTRT Bit */ + CLEAR_BIT(FLASH->CR, FLASH_CR_OPTSTRT); + + /* Set the bit to force the option byte reloading */ + SET_BIT(FLASH->CR, FLASH_CR_OBL_LAUNCH); + } + } + + /* Process Unlocked */ + __HAL_UNLOCK(&pFlash); + + return status; +} +#endif + +/** + * @} + */ + +/** + * @} + */ +#endif /* HAL_FLASH_MODULE_ENABLED */ + + + +/** + * @} + */ + +/** + * @} + */ + + + + |