562 lines
17 KiB
C
562 lines
17 KiB
C
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/**
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******************************************************************************
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* @file stm32l0xx_hal.c
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* @author MCD Application Team
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* @version V1.7.0
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* @date 31-May-2016
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* @brief HAL module driver.
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* This is the common part of the HAL initialization
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*
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@verbatim
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==============================================================================
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##### How to use this driver #####
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==============================================================================
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[..]
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The common HAL driver contains a set of generic and common APIs that can be
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used by the PPP peripheral drivers and the user to start using the HAL.
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[..]
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The HAL contains two APIs categories:
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(+) Common HAL APIs
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(+) Services HAL APIs
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@endverbatim
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******************************************************************************
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* @attention
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*
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* <h2><center>© COPYRIGHT(c) 2016 STMicroelectronics</center></h2>
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*
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* Redistribution and use in source and binary forms, with or without modification,
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* are permitted provided that the following conditions are met:
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* 1. Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* 3. Neither the name of STMicroelectronics nor the names of its contributors
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* may be used to endorse or promote products derived from this software
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* without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
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* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
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* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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******************************************************************************
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*/
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/* Includes ------------------------------------------------------------------*/
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#include "stm32l0xx_hal.h"
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/** @addtogroup STM32L0xx_HAL_Driver
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* @{
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*/
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#ifdef HAL_MODULE_ENABLED
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/** @addtogroup HAL
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* @brief HAL module driver.
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* @{
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*/
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/** @addtogroup HAL_Exported_Constants
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* @{
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*/
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/** @defgroup SysTick System Tick
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* @{
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*/
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/**
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* @brief uwTick_variable uwTick variable
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*/
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__IO uint32_t uwTick;
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/**
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* @}
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*/
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/** @defgroup HAL_Version HAL Version
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* @{
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*/
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/**
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* @brief STM32L0xx HAL Driver version number V1.7.0
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*/
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#define __STM32L0xx_HAL_VERSION_MAIN (0x01U) /*!< [31:24] main version */
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#define __STM32L0xx_HAL_VERSION_SUB1 (0x07U) /*!< [23:16] sub1 version */
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#define __STM32L0xx_HAL_VERSION_SUB2 (0x00U) /*!< [15:8] sub2 version */
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#define __STM32L0xx_HAL_VERSION_RC (0x00U) /*!< [7:0] release candidate */
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#define __STM32L0xx_HAL_VERSION ((__STM32L0xx_HAL_VERSION_MAIN << 24U)\
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|(__STM32L0xx_HAL_VERSION_SUB1 << 16U)\
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|(__STM32L0xx_HAL_VERSION_SUB2 << 8U )\
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|(__STM32L0xx_HAL_VERSION_RC))
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#define IDCODE_DEVID_MASK ((uint32_t)0x00000FFFU)
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/**
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* @}
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*/
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/**
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* @}
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*/
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/** @defgroup HAL_Private HAL Private
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* @{
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*/
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/**
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* @}
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*/
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/** @addtogroup HAL_Exported_Functions HAL Exported Functions
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* @{
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*/
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/** @addtogroup HAL_Exported_Functions_Group1
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* @brief Initialization and de-initialization functions
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*
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@verbatim
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===============================================================================
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##### Initialization and de-initialization functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Initializes the Flash interface, the NVIC allocation and initial clock
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configuration. It initializes the source of time base also when timeout
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is needed and the backup domain when enabled.
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(+) de-Initializes common part of the HAL.
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(+) Configure The time base source to have 1ms time base with a dedicated
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Tick interrupt priority.
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(++) Systick timer is used by default as source of time base, but user
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can eventually implement his proper time base source (a general purpose
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timer for example or other time source), keeping in mind that Time base
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duration should be kept 1ms since PPP_TIMEOUT_VALUEs are defined and
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handled in milliseconds basis.
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(++) Time base configuration function (HAL_InitTick ()) is called automatically
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at the beginning of the program after reset by HAL_Init() or at any time
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when clock is configured, by HAL_RCC_ClockConfig().
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(++) Source of time base is configured to generate interrupts at regular
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time intervals. Care must be taken if HAL_Delay() is called from a
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peripheral ISR process, the Tick interrupt line must have higher priority
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(numerically lower) than the peripheral interrupt. Otherwise the caller
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ISR process will be blocked.
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(++) functions affecting time base configurations are declared as __weak
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to make override possible in case of other implementations in user file.
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@endverbatim
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* @{
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*/
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/**
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* @brief This function configures the Flash prefetch, Flash preread and Buffer cache,
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* Configures time base source, NVIC and Low level hardware
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* @note This function is called at the beginning of program after reset and before
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* the clock configuration
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* @note The time base configuration is based on MSI clock when exiting from Reset.
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* Once done, time base tick start incrementing.
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* In the default implementation,Systick is used as source of time base.
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* the tick variable is incremented each 1ms in its ISR.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_Init(void)
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{
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/* Configure Buffer cache, Flash prefetch, Flash preread */
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#if (BUFFER_CACHE_DISABLE != 0)
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__HAL_FLASH_BUFFER_CACHE_DISABLE();
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#endif /* BUFFER_CACHE_DISABLE */
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#if (PREREAD_ENABLE != 0)
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__HAL_FLASH_PREREAD_BUFFER_ENABLE();
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#endif /* PREREAD_ENABLE */
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#if (PREFETCH_ENABLE != 0)
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__HAL_FLASH_PREFETCH_BUFFER_ENABLE();
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#endif /* PREFETCH_ENABLE */
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/* Use systick as time base source and configure 1ms tick (default clock after Reset is MSI) */
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HAL_InitTick(TICK_INT_PRIORITY);
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/* Init the low level hardware */
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HAL_MspInit();
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/* Return function status */
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return HAL_OK;
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}
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/**
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* @brief This function de-Initializes common part of the HAL and stops the source
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* of time base.
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* @note This function is optional.
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* @retval HAL status
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*/
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HAL_StatusTypeDef HAL_DeInit(void)
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{
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/* Reset of all peripherals */
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__HAL_RCC_APB1_FORCE_RESET();
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__HAL_RCC_APB1_RELEASE_RESET();
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__HAL_RCC_APB2_FORCE_RESET();
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__HAL_RCC_APB2_RELEASE_RESET();
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__HAL_RCC_AHB_FORCE_RESET();
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__HAL_RCC_AHB_RELEASE_RESET();
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__HAL_RCC_IOP_FORCE_RESET();
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__HAL_RCC_IOP_RELEASE_RESET();
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/* De-Init the low level hardware */
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HAL_MspDeInit();
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/* Return function status */
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return HAL_OK;
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}
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/**
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* @brief Initializes the MSP.
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* @retval None
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*/
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__weak void HAL_MspInit(void)
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{
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/* NOTE : This function Should not be modified, when the callback is needed,
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the HAL_MspInit could be implemented in the user file
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*/
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}
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/**
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* @brief DeInitializes the MSP.
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* @retval None
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*/
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__weak void HAL_MspDeInit(void)
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{
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/* NOTE : This function Should not be modified, when the callback is needed,
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the HAL_MspDeInit could be implemented in the user file
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*/
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}
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/**
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* @brief This function configures the source of the time base.
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* The time source is configured to have 1ms time base with a dedicated
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* Tick interrupt priority.
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* @note This function is called automatically at the beginning of program after
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* reset by HAL_Init() or at any time when clock is reconfigured by HAL_RCC_ClockConfig().
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* @note In the default implementation, SysTick timer is the source of time base.
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* It is used to generate interrupts at regular time intervals.
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* Care must be taken if HAL_Delay() is called from a peripheral ISR process,
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* The the SysTick interrupt must have higher priority (numerically lower)
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* than the peripheral interrupt. Otherwise the caller ISR process will be blocked.
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* The function is declared as __Weak to be overwritten in case of other
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* implementation in user file.
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* @param TickPriority: Tick interrupt priority.
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* @retval HAL status
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*/
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__weak HAL_StatusTypeDef HAL_InitTick(uint32_t TickPriority)
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{
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/*Configure the SysTick to have interrupt in 1ms time basis*/
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HAL_SYSTICK_Config(SystemCoreClock/1000U);
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/*Configure the SysTick IRQ priority */
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HAL_NVIC_SetPriority(SysTick_IRQn, TickPriority ,0U);
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/* Return function status */
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return HAL_OK;
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}
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/**
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* @}
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*/
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/** @addtogroup HAL_Exported_Functions_Group2
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* @brief Peripheral Control functions
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*
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@verbatim
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===============================================================================
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##### HAL Control functions #####
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===============================================================================
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[..] This section provides functions allowing to:
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(+) Provide a tick value in millisecond
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(+) Provide a blocking delay in millisecond
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(+) Suspend the time base source interrupt
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(+) Resume the time base source interrupt
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(+) Get the HAL API driver version
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(+) Get the device identifier
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(+) Get the device revision identifier
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(+) Configure low power mode behavior when the MCU is in Debug mode
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(+) Manage the VEREFINT feature (activation, lock, output selection)
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@endverbatim
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* @{
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*/
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/**
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* @brief This function is called to increment a global variable "uwTick"
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* used as application time base.
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* @note In the default implementation, this variable is incremented each 1ms
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* in Systick ISR.
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* @note This function is declared as __weak to be overwritten in case of other
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* implementations in user file.
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* @retval None
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*/
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__weak void HAL_IncTick(void)
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{
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uwTick++;
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}
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/**
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* @brief Provides a tick value in millisecond.
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* @note This function is declared as __weak to be overwritten in case of other
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* implementations in user file.
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* @retval tick value
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*/
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__weak uint32_t HAL_GetTick(void)
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{
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return uwTick;
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}
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/**
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* @brief This function provides accurate delay (in ms) based on a variable incremented.
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* @note In the default implementation , SysTick timer is the source of time base.
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* It is used to generate interrupts at regular time intervals where uwTick
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* is incremented.
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* @note ThiS function is declared as __weak to be overwritten in case of other
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* implementations in user file.
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* @param Delay: specifies the delay time length, in milliseconds.
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* @retval None
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*/
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__weak void HAL_Delay(__IO uint32_t Delay)
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{
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uint32_t tickstart = 0U;
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tickstart = HAL_GetTick();
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while((HAL_GetTick() - tickstart) < Delay)
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{
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}
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}
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/**
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* @brief Suspends the Tick increment.
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* @note In the default implementation , SysTick timer is the source of time base. It is
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* used to generate interrupts at regular time intervals. Once HAL_SuspendTick()
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* is called, the the SysTick interrupt will be disabled and so Tick increment
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* is suspended.
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* @note This function is declared as __weak to be overwritten in case of other
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* implementations in user file.
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* @retval None
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*/
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__weak void HAL_SuspendTick(void)
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{
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/* Disable SysTick Interrupt */
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SysTick->CTRL &= ~SysTick_CTRL_TICKINT_Msk;
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}
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/**
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* @brief Resumes the Tick increment.
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* @note In the default implementation , SysTick timer is the source of time base. It is
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* used to generate interrupts at regular time intervals. Once HAL_ResumeTick()
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* is called, the the SysTick interrupt will be enabled and so Tick increment
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* is resumed.
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* @note This function is declared as __weak to be overwritten in case of other
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* implementations in user file.
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* @retval None
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*/
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__weak void HAL_ResumeTick(void)
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{
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/* Enable SysTick Interrupt */
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SysTick->CTRL |= SysTick_CTRL_TICKINT_Msk;
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}
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/**
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* @brief Returns the HAL revision
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* @retval version: 0xXYZR (8bits for each decimal, R for RC)
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*/
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uint32_t HAL_GetHalVersion(void)
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{
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return __STM32L0xx_HAL_VERSION;
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}
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/**
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||
|
|
* @brief Returns the device revision identifier.
|
||
|
|
* @retval Device revision identifier
|
||
|
|
*/
|
||
|
|
uint32_t HAL_GetREVID(void)
|
||
|
|
{
|
||
|
|
return((DBGMCU->IDCODE) >> 16U);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Returns the device identifier.
|
||
|
|
* @retval Device identifier
|
||
|
|
*/
|
||
|
|
uint32_t HAL_GetDEVID(void)
|
||
|
|
{
|
||
|
|
return((DBGMCU->IDCODE) & IDCODE_DEVID_MASK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enables the Debug Module during SLEEP mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_EnableDBGSleepMode(void)
|
||
|
|
{
|
||
|
|
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Disables the Debug Module during SLEEP mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_DisableDBGSleepMode(void)
|
||
|
|
{
|
||
|
|
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_SLEEP);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enables the Debug Module during STOP mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_EnableDBGStopMode(void)
|
||
|
|
{
|
||
|
|
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Disables the Debug Module during STOP mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_DisableDBGStopMode(void)
|
||
|
|
{
|
||
|
|
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STOP);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enables the Debug Module during STANDBY mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_EnableDBGStandbyMode(void)
|
||
|
|
{
|
||
|
|
SET_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Disables the Debug Module during STANDBY mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_DisableDBGStandbyMode(void)
|
||
|
|
{
|
||
|
|
CLEAR_BIT(DBGMCU->CR, DBGMCU_CR_DBG_STANDBY);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Enable low power mode behavior when the MCU is in Debug mode.
|
||
|
|
* @param Periph: specifies the low power mode.
|
||
|
|
* This parameter can be any combination of the following values:
|
||
|
|
* @arg DBGMCU_SLEEP: Keep debugger connection during SLEEP mode
|
||
|
|
* @arg DBGMCU_STOP: Keep debugger connection during STOP mode
|
||
|
|
* @arg DBGMCU_STANDBY: Keep debugger connection during STANDBY mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_DBG_EnableLowPowerConfig(uint32_t Periph)
|
||
|
|
{
|
||
|
|
/* Check the parameters */
|
||
|
|
assert_param(IS_DBGMCU_PERIPH(Periph));
|
||
|
|
|
||
|
|
DBGMCU->CR |= Periph;
|
||
|
|
|
||
|
|
}
|
||
|
|
/**
|
||
|
|
* @brief Disable low power mode behavior when the MCU is in Debug mode.
|
||
|
|
* @param Periph: specifies the low power mode.
|
||
|
|
* This parameter can be any combination of the following values:
|
||
|
|
* @arg DBGMCU_SLEEP: Keep debugger connection during SLEEP mode
|
||
|
|
* @arg DBGMCU_STOP: Keep debugger connection during STOP mode
|
||
|
|
* @arg DBGMCU_STANDBY: Keep debugger connection during STANDBY mode
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_DBGMCU_DBG_DisableLowPowerConfig(uint32_t Periph)
|
||
|
|
{
|
||
|
|
/* Check the parameters */
|
||
|
|
assert_param(IS_DBGMCU_PERIPH(Periph));
|
||
|
|
{
|
||
|
|
DBGMCU->CR &= ~Periph;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Returns the boot mode as configured by user.
|
||
|
|
* @retval The boot mode as configured by user. The returned value can be one
|
||
|
|
* of the following values:
|
||
|
|
* - 0x00000000 : Boot is configured in Main Flash memory
|
||
|
|
* - 0x00000100 : Boot is configured in System Flash memory
|
||
|
|
* - 0x00000300 : Boot is configured in Embedded SRAM memory
|
||
|
|
*/
|
||
|
|
uint32_t HAL_SYSCFG_GetBootMode(void)
|
||
|
|
{
|
||
|
|
return (SYSCFG->CFGR1 & SYSCFG_CFGR1_BOOT_MODE);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Selects the output of internal reference voltage (VREFINT).
|
||
|
|
* The VREFINT output can be routed to(PB0) or
|
||
|
|
* (PB1) or both.
|
||
|
|
* @param SYSCFG_Vrefint_OUTPUT: new state of the Vrefint output.
|
||
|
|
* This parameter can be one of the following values:
|
||
|
|
* @arg SYSCFG_VREFINT_OUT_NONE
|
||
|
|
* @arg SYSCFG_VREFINT_OUT_PB0
|
||
|
|
* @arg SYSCFG_VREFINT_OUT_PB1
|
||
|
|
* @arg SYSCFG_VREFINT_OUT_PB0_PB1
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_SYSCFG_VREFINT_OutputSelect(uint32_t SYSCFG_Vrefint_OUTPUT)
|
||
|
|
{
|
||
|
|
/* Check the parameters */
|
||
|
|
assert_param(IS_SYSCFG_VREFINT_OUT_SELECT(SYSCFG_Vrefint_OUTPUT));
|
||
|
|
|
||
|
|
/* Set the output Vrefint pin */
|
||
|
|
SYSCFG->CFGR3 &= ~(SYSCFG_CFGR3_VREF_OUT);
|
||
|
|
SYSCFG->CFGR3 |= (uint32_t)(SYSCFG_Vrefint_OUTPUT);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Lock the SYSCFG VREF register values
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_SYSCFG_Enable_Lock_VREFINT(void)
|
||
|
|
{
|
||
|
|
/* Enable the LOCK by setting REF_LOCK bit in the CFGR3 register */
|
||
|
|
SET_BIT(SYSCFG->CFGR3, SYSCFG_CFGR3_REF_LOCK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @brief Unlock the overall SYSCFG VREF register values
|
||
|
|
* @retval None
|
||
|
|
*/
|
||
|
|
void HAL_SYSCFG_Disable_Lock_VREFINT(void)
|
||
|
|
{
|
||
|
|
/* Disable the LOCK by setting REF_LOCK bit in the CFGR3 register */
|
||
|
|
CLEAR_BIT(SYSCFG->CFGR3, SYSCFG_CFGR3_REF_LOCK);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
#endif /* HAL_MODULE_ENABLED */
|
||
|
|
/**
|
||
|
|
* @}
|
||
|
|
*/
|
||
|
|
|
||
|
|
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
|