| /** |
| ****************************************************************************** |
| * @file stm32f0xx_hal_cortex.c |
| * @author MCD Application Team |
| * @brief CORTEX HAL module driver. |
| * This file provides firmware functions to manage the following |
| * functionalities of the CORTEX: |
| * + Initialization and de-initialization functions |
| * + Peripheral Control functions |
| * |
| * @verbatim |
| ============================================================================== |
| ##### How to use this driver ##### |
| ============================================================================== |
| |
| [..] |
| *** How to configure Interrupts using CORTEX HAL driver *** |
| =========================================================== |
| [..] |
| This section provides functions allowing to configure the NVIC interrupts (IRQ). |
| The Cortex-M0 exceptions are managed by CMSIS functions. |
| (#) Enable and Configure the priority of the selected IRQ Channels. |
| The priority can be 0..3. |
| |
| -@- Lower priority values gives higher priority. |
| -@- Priority Order: |
| (#@) Lowest priority. |
| (#@) Lowest hardware priority (IRQn position). |
| |
| (#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority() |
| |
| (#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ() |
| |
| -@- Negative value of IRQn_Type are not allowed. |
| |
| |
| [..] |
| *** How to configure Systick using CORTEX HAL driver *** |
| ======================================================== |
| [..] |
| Setup SysTick Timer for time base. |
| |
| (+) The HAL_SYSTICK_Config()function calls the SysTick_Config() function which |
| is a CMSIS function that: |
| (++) Configures the SysTick Reload register with value passed as function parameter. |
| (++) Configures the SysTick IRQ priority to the lowest value (0x03). |
| (++) Resets the SysTick Counter register. |
| (++) Configures the SysTick Counter clock source to be Core Clock Source (HCLK). |
| (++) Enables the SysTick Interrupt. |
| (++) Starts the SysTick Counter. |
| |
| (+) You can change the SysTick Clock source to be HCLK_Div8 by calling the macro |
| HAL_SYSTICK_CLKSourceConfig(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the |
| HAL_SYSTICK_Config() function call. The HAL_SYSTICK_CLKSourceConfig() macro is defined |
| inside the stm32f0xx_hal_cortex.h file. |
| |
| (+) You can change the SysTick IRQ priority by calling the |
| HAL_NVIC_SetPriority(SysTick_IRQn,...) function just after the HAL_SYSTICK_Config() function |
| call. The HAL_NVIC_SetPriority() call the NVIC_SetPriority() function which is a CMSIS function. |
| |
| (+) To adjust the SysTick time base, use the following formula: |
| |
| Reload Value = SysTick Counter Clock (Hz) x Desired Time base (s) |
| (++) Reload Value is the parameter to be passed for HAL_SYSTICK_Config() function |
| (++) Reload Value should not exceed 0xFFFFFF |
| |
| @endverbatim |
| ****************************************************************************** |
| * @attention |
| * |
| * Copyright (c) 2016 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 "stm32f0xx_hal.h" |
| |
| /** @addtogroup STM32F0xx_HAL_Driver |
| * @{ |
| */ |
| |
| /** @defgroup CORTEX CORTEX |
| * @brief CORTEX CORTEX HAL module driver |
| * @{ |
| */ |
| |
| #ifdef HAL_CORTEX_MODULE_ENABLED |
| |
| /* Private typedef -----------------------------------------------------------*/ |
| /* Private define ------------------------------------------------------------*/ |
| /* Private macro -------------------------------------------------------------*/ |
| /* Private variables ---------------------------------------------------------*/ |
| /* Private function prototypes -----------------------------------------------*/ |
| /* Exported functions ---------------------------------------------------------*/ |
| |
| /** @defgroup CORTEX_Exported_Functions CORTEX Exported Functions |
| * @{ |
| */ |
| |
| |
| /** @defgroup CORTEX_Exported_Functions_Group1 Initialization and de-initialization functions |
| * @brief Initialization and Configuration functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### Initialization and de-initialization functions ##### |
| ============================================================================== |
| [..] |
| This section provides the CORTEX HAL driver functions allowing to configure Interrupts |
| Systick functionalities |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| /** |
| * @brief Sets the priority of an interrupt. |
| * @param IRQn External interrupt number . |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to stm32f0xx.h file) |
| * @param PreemptPriority The preemption priority for the IRQn channel. |
| * This parameter can be a value between 0 and 3. |
| * A lower priority value indicates a higher priority |
| * @param SubPriority the subpriority level for the IRQ channel. |
| * with stm32f0xx devices, this parameter is a dummy value and it is ignored, because |
| * no subpriority supported in Cortex M0 based products. |
| * @retval None |
| */ |
| void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority) |
| { |
| /* Check the parameters */ |
| assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority)); |
| NVIC_SetPriority(IRQn,PreemptPriority); |
| } |
| |
| /** |
| * @brief Enables a device specific interrupt in the NVIC interrupt controller. |
| * @note To configure interrupts priority correctly, the NVIC_PriorityGroupConfig() |
| * function should be called before. |
| * @param IRQn External interrupt number. |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h)) |
| * @retval None |
| */ |
| void HAL_NVIC_EnableIRQ(IRQn_Type IRQn) |
| { |
| /* Check the parameters */ |
| assert_param(IS_NVIC_DEVICE_IRQ(IRQn)); |
| |
| /* Enable interrupt */ |
| NVIC_EnableIRQ(IRQn); |
| } |
| |
| /** |
| * @brief Disables a device specific interrupt in the NVIC interrupt controller. |
| * @param IRQn External interrupt number. |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h)) |
| * @retval None |
| */ |
| void HAL_NVIC_DisableIRQ(IRQn_Type IRQn) |
| { |
| /* Check the parameters */ |
| assert_param(IS_NVIC_DEVICE_IRQ(IRQn)); |
| |
| /* Disable interrupt */ |
| NVIC_DisableIRQ(IRQn); |
| } |
| |
| /** |
| * @brief Initiates a system reset request to reset the MCU. |
| * @retval None |
| */ |
| void HAL_NVIC_SystemReset(void) |
| { |
| /* System Reset */ |
| NVIC_SystemReset(); |
| } |
| |
| /** |
| * @brief Initializes the System Timer and its interrupt, and starts the System Tick Timer. |
| * Counter is in free running mode to generate periodic interrupts. |
| * @param TicksNumb Specifies the ticks Number of ticks between two interrupts. |
| * @retval status: - 0 Function succeeded. |
| * - 1 Function failed. |
| */ |
| uint32_t HAL_SYSTICK_Config(uint32_t TicksNumb) |
| { |
| return SysTick_Config(TicksNumb); |
| } |
| /** |
| * @} |
| */ |
| |
| /** @defgroup CORTEX_Exported_Functions_Group2 Peripheral Control functions |
| * @brief Cortex control functions |
| * |
| @verbatim |
| ============================================================================== |
| ##### Peripheral Control functions ##### |
| ============================================================================== |
| [..] |
| This subsection provides a set of functions allowing to control the CORTEX |
| (NVIC, SYSTICK) functionalities. |
| |
| |
| @endverbatim |
| * @{ |
| */ |
| |
| |
| /** |
| * @brief Gets the priority of an interrupt. |
| * @param IRQn External interrupt number. |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h)) |
| * @retval None |
| */ |
| uint32_t HAL_NVIC_GetPriority(IRQn_Type IRQn) |
| { |
| /* Get priority for Cortex-M system or device specific interrupts */ |
| return NVIC_GetPriority(IRQn); |
| } |
| |
| /** |
| * @brief Sets Pending bit of an external interrupt. |
| * @param IRQn External interrupt number |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h)) |
| * @retval None |
| */ |
| void HAL_NVIC_SetPendingIRQ(IRQn_Type IRQn) |
| { |
| /* Check the parameters */ |
| assert_param(IS_NVIC_DEVICE_IRQ(IRQn)); |
| |
| /* Set interrupt pending */ |
| NVIC_SetPendingIRQ(IRQn); |
| } |
| |
| /** |
| * @brief Gets Pending Interrupt (reads the pending register in the NVIC |
| * and returns the pending bit for the specified interrupt). |
| * @param IRQn External interrupt number. |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h)) |
| * @retval status: - 0 Interrupt status is not pending. |
| * - 1 Interrupt status is pending. |
| */ |
| uint32_t HAL_NVIC_GetPendingIRQ(IRQn_Type IRQn) |
| { |
| /* Check the parameters */ |
| assert_param(IS_NVIC_DEVICE_IRQ(IRQn)); |
| |
| /* Return 1 if pending else 0 */ |
| return NVIC_GetPendingIRQ(IRQn); |
| } |
| |
| /** |
| * @brief Clears the pending bit of an external interrupt. |
| * @param IRQn External interrupt number. |
| * This parameter can be an enumerator of IRQn_Type enumeration |
| * (For the complete STM32 Devices IRQ Channels list, please refer to the appropriate CMSIS device file (stm32f0xxxx.h)) |
| * @retval None |
| */ |
| void HAL_NVIC_ClearPendingIRQ(IRQn_Type IRQn) |
| { |
| /* Check the parameters */ |
| assert_param(IS_NVIC_DEVICE_IRQ(IRQn)); |
| |
| /* Clear pending interrupt */ |
| NVIC_ClearPendingIRQ(IRQn); |
| } |
| |
| /** |
| * @brief Configures the SysTick clock source. |
| * @param CLKSource specifies the SysTick clock source. |
| * This parameter can be one of the following values: |
| * @arg SYSTICK_CLKSOURCE_HCLK_DIV8: AHB clock divided by 8 selected as SysTick clock source. |
| * @arg SYSTICK_CLKSOURCE_HCLK: AHB clock selected as SysTick clock source. |
| * @retval None |
| */ |
| void HAL_SYSTICK_CLKSourceConfig(uint32_t CLKSource) |
| { |
| /* Check the parameters */ |
| assert_param(IS_SYSTICK_CLK_SOURCE(CLKSource)); |
| if (CLKSource == SYSTICK_CLKSOURCE_HCLK) |
| { |
| SysTick->CTRL |= SYSTICK_CLKSOURCE_HCLK; |
| } |
| else |
| { |
| SysTick->CTRL &= ~SYSTICK_CLKSOURCE_HCLK; |
| } |
| } |
| |
| /** |
| * @brief This function handles SYSTICK interrupt request. |
| * @retval None |
| */ |
| void HAL_SYSTICK_IRQHandler(void) |
| { |
| HAL_SYSTICK_Callback(); |
| } |
| |
| /** |
| * @brief SYSTICK callback. |
| * @retval None |
| */ |
| __weak void HAL_SYSTICK_Callback(void) |
| { |
| /* NOTE : This function Should not be modified, when the callback is needed, |
| the HAL_SYSTICK_Callback could be implemented in the user file |
| */ |
| } |
| |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |
| #endif /* HAL_CORTEX_MODULE_ENABLED */ |
| /** |
| * @} |
| */ |
| |
| /** |
| * @} |
| */ |
| |