358 lines
13 KiB
C
358 lines
13 KiB
C
/**
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******************************************************************************
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* @file stm32f0xx_hal_cortex.c
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* @author MCD Application Team
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* @brief CORTEX HAL module driver.
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* This file provides firmware functions to manage the following
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* functionalities of the CORTEX:
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* + Initialization and de-initialization functions
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* + Peripheral Control functions
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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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*** How to configure Interrupts using CORTEX HAL driver ***
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===========================================================
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[..]
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This section provides functions allowing to configure the NVIC interrupts (IRQ).
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The Cortex-M0 exceptions are managed by CMSIS functions.
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(#) Enable and Configure the priority of the selected IRQ Channels.
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The priority can be 0..3.
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-@- Lower priority values gives higher priority.
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-@- Priority Order:
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(#@) Lowest priority.
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(#@) Lowest hardware priority (IRQn position).
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(#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority()
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(#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ()
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-@- Negative value of IRQn_Type are not allowed.
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[..]
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*** How to configure Systick using CORTEX HAL driver ***
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========================================================
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[..]
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Setup SysTick Timer for time base.
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(+) The HAL_SYSTICK_Config()function calls the SysTick_Config() function which
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is a CMSIS function that:
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(++) Configures the SysTick Reload register with value passed as function parameter.
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(++) Configures the SysTick IRQ priority to the lowest value (0x03).
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(++) Resets the SysTick Counter register.
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(++) Configures the SysTick Counter clock source to be Core Clock Source (HCLK).
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(++) Enables the SysTick Interrupt.
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(++) Starts the SysTick Counter.
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(+) You can change the SysTick Clock source to be HCLK_Div8 by calling the macro
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HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the
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HAL_SYSTICK_Config() function call. The HAL_SYSTICK_CLKSourceConfig() macro is defined
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inside the stm32f0xx_hal_cortex.h file.
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(+) You can change the SysTick IRQ priority by calling the
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HAL_NVIC_SetPriority(SysTick_IRQn,...) function just after the HAL_SYSTICK_Config() function
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call. The HAL_NVIC_SetPriority() call the NVIC_SetPriority() function which is a CMSIS function.
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(+) To adjust the SysTick time base, use the following formula:
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Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s)
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(++) Reload Value is the parameter to be passed for HAL_SYSTICK_Config() function
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(++) Reload Value should not exceed 0xFFFFFF
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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 "stm32f0xx_hal.h"
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/** @addtogroup STM32F0xx_HAL_Driver
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* @{
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*/
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/** @defgroup CORTEX CORTEX
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* @brief CORTEX CORTEX HAL module driver
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* @{
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*/
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#ifdef HAL_CORTEX_MODULE_ENABLED
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/* Private typedef -----------------------------------------------------------*/
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/* Private define ------------------------------------------------------------*/
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/* Private macro -------------------------------------------------------------*/
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/* Private variables ---------------------------------------------------------*/
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/* Private function prototypes -----------------------------------------------*/
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/* Exported functions ---------------------------------------------------------*/
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/** @defgroup CORTEX_Exported_Functions CORTEX Exported Functions
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* @{
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*/
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/** @defgroup CORTEX_Exported_Functions_Group1 Initialization and de-initialization functions
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* @brief Initialization and Configuration 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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[..]
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This section provides the CORTEX HAL driver functions allowing to configure Interrupts
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Systick functionalities
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@endverbatim
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* @{
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*/
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/**
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* @brief Sets the priority of an interrupt.
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* @param IRQn External interrupt number .
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to stm32f0xx.h file)
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* @param PreemptPriority The preemption priority for the IRQn channel.
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* This parameter can be a value between 0 and 3.
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* A lower priority value indicates a higher priority
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* @param SubPriority the subpriority level for the IRQ channel.
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* with stm32f0xx devices, this parameter is a dummy value and it is ignored, because
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* no subpriority supported in Cortex M0 based products.
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* @retval None
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*/
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void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
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{
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/* Check the parameters */
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assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority));
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NVIC_SetPriority(IRQn,PreemptPriority);
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}
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/**
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* @brief Enables a device specific interrupt in the NVIC interrupt controller.
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* @note To configure interrupts priority correctly, the NVIC_PriorityGroupConfig()
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* function should be called before.
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* @param IRQn External interrupt number.
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h))
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* @retval None
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*/
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void HAL_NVIC_EnableIRQ(IRQn_Type IRQn)
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{
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/* Check the parameters */
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assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
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/* Enable interrupt */
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NVIC_EnableIRQ(IRQn);
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}
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/**
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* @brief Disables a device specific interrupt in the NVIC interrupt controller.
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* @param IRQn External interrupt number.
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h))
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* @retval None
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*/
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void HAL_NVIC_DisableIRQ(IRQn_Type IRQn)
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{
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/* Check the parameters */
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assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
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/* Disable interrupt */
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NVIC_DisableIRQ(IRQn);
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}
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/**
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* @brief Initiates a system reset request to reset the MCU.
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* @retval None
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*/
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void HAL_NVIC_SystemReset(void)
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{
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/* System Reset */
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NVIC_SystemReset();
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}
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/**
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* @brief Initializes the System Timer and its interrupt, and starts the System Tick Timer.
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* Counter is in free running mode to generate periodic interrupts.
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* @param TicksNumb Specifies the ticks Number of ticks between two interrupts.
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* @retval status: - 0 Function succeeded.
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* - 1 Function failed.
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*/
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uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb)
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{
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return SysTick_Config(TicksNumb);
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}
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/**
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* @}
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*/
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/** @defgroup CORTEX_Exported_Functions_Group2 Peripheral Control functions
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* @brief Cortex control functions
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*
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@verbatim
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==============================================================================
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##### Peripheral Control functions #####
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==============================================================================
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[..]
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This subsection provides a set of functions allowing to control the CORTEX
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(NVIC, SYSTICK) functionalities.
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@endverbatim
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* @{
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*/
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/**
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* @brief Gets the priority of an interrupt.
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* @param IRQn External interrupt number.
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h))
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* @retval None
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*/
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uint32_t HAL_NVIC_GetPriority(IRQn_Type IRQn)
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{
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/* Get priority for Cortex-M system or device specific interrupts */
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return NVIC_GetPriority(IRQn);
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}
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/**
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* @brief Sets Pending bit of an external interrupt.
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* @param IRQn External interrupt number
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h))
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* @retval None
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*/
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void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn)
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{
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/* Check the parameters */
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assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
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/* Set interrupt pending */
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NVIC_SetPendingIRQ(IRQn);
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}
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/**
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* @brief Gets Pending Interrupt (reads the pending register in the NVIC
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* and returns the pending bit for the specified interrupt).
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* @param IRQn External interrupt number.
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h))
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* @retval status: - 0 Interrupt status is not pending.
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* - 1 Interrupt status is pending.
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*/
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uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn)
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{
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/* Check the parameters */
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assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
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/* Return 1 if pending else 0 */
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return NVIC_GetPendingIRQ(IRQn);
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}
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/**
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* @brief Clears the pending bit of an external interrupt.
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* @param IRQn External interrupt number.
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* This parameter can be an enumerator of IRQn_Type enumeration
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* (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h))
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* @retval None
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*/
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void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn)
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{
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/* Check the parameters */
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assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
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/* Clear pending interrupt */
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NVIC_ClearPendingIRQ(IRQn);
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}
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/**
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* @brief Configures the SysTick clock source.
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* @param CLKSource specifies the SysTick clock source.
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* This parameter can be one of the following values:
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* @arg SYSTICK_CLKSOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source.
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* @arg SYSTICK_CLKSOURCE_HCLK: AHB clock selected as SysTick clock source.
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* @retval None
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*/
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void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource)
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{
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/* Check the parameters */
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assert_param(IS_SYSTICK_CLK_SOURCE(CLKSource));
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if (CLKSource == SYSTICK_CLKSOURCE_HCLK)
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{
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SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK;
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}
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else
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{
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SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK;
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}
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}
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/**
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* @brief This function handles SYSTICK interrupt request.
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* @retval None
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*/
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void HAL_SYSTICK_IRQHandler(void)
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{
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HAL_SYSTICK_Callback();
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}
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/**
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* @brief SYSTICK callback.
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* @retval None
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*/
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__weak void HAL_SYSTICK_Callback(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_SYSTICK_Callback could be implemented in the user file
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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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* @}
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*/
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#endif /* HAL_CORTEX_MODULE_ENABLED */
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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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/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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