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+/**
+ ******************************************************************************
+ * @file stm32f4xx_hal_cortex.c
+ * @author MCD Application Team
+ * @version V1.4.0
+ * @date 14-August-2015
+ * @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-M4 exceptions are managed by CMSIS functions.
+
+ (#) Configure the NVIC Priority Grouping using HAL_NVIC_SetPriorityGrouping()
+ function according to the following table.
+ (#) Configure the priority of the selected IRQ Channels using HAL_NVIC_SetPriority().
+ (#) Enable the selected IRQ Channels using HAL_NVIC_EnableIRQ().
+ (#) please refer to programing manual for details in how to configure priority.
+
+ -@- When the NVIC_PRIORITYGROUP_0 is selected, IRQ preemption is no more possible.
+ The pending IRQ priority will be managed only by the sub priority.
+
+ -@- IRQ priority order (sorted by highest to lowest priority):
+ (+@) Lowest preemption priority
+ (+@) Lowest sub priority
+ (+@) Lowest hardware priority (IRQ number)
+
+ [..]
+ *** 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 (0x0F).
+ (++) 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_CORTEX_SYSTICKCLK_CONFIG(SYSTICK_CLKSOURCE_HCLK_DIV8) just after the
+ HAL_SYSTICK_Config() function call. The __HAL_CORTEX_SYSTICKCLK_CONFIG() macro is defined
+ inside the stm32f4xx_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
+ *
+ * <h2><center>&copy; COPYRIGHT(c) 2015 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 "stm32f4xx_hal.h"
+
+/** @addtogroup STM32F4xx_HAL_Driver
+ * @{
+ */
+
+/** @defgroup CORTEX CORTEX
+ * @brief CORTEX HAL module driver
+ * @{
+ */
+
+#ifdef HAL_CORTEX_MODULE_ENABLED
+
+/* Private types -------------------------------------------------------------*/
+/* Private variables ---------------------------------------------------------*/
+/* Private constants ---------------------------------------------------------*/
+/* Private macros ------------------------------------------------------------*/
+/* Private functions ---------------------------------------------------------*/
+/* 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 grouping field (preemption priority and subpriority)
+ * using the required unlock sequence.
+ * @param PriorityGroup: The priority grouping bits length.
+ * This parameter can be one of the following values:
+ * @arg NVIC_PRIORITYGROUP_0: 0 bits for preemption priority
+ * 4 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_1: 1 bits for preemption priority
+ * 3 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_2: 2 bits for preemption priority
+ * 2 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_3: 3 bits for preemption priority
+ * 1 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_4: 4 bits for preemption priority
+ * 0 bits for subpriority
+ * @note When the NVIC_PriorityGroup_0 is selected, IRQ preemption is no more possible.
+ * The pending IRQ priority will be managed only by the subpriority.
+ * @retval None
+ */
+void HAL_NVIC_SetPriorityGrouping(uint32_t PriorityGroup)
+{
+ /* Check the parameters */
+ assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
+
+ /* Set the PRIGROUP[10:8] bits according to the PriorityGroup parameter value */
+ NVIC_SetPriorityGrouping(PriorityGroup);
+}
+
+/**
+ * @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 the appropriate CMSIS device file (stm32f4xxxx.h))
+ * @param PreemptPriority: The preemption priority for the IRQn channel.
+ * This parameter can be a value between 0 and 15
+ * A lower priority value indicates a higher priority
+ * @param SubPriority: the subpriority level for the IRQ channel.
+ * This parameter can be a value between 0 and 15
+ * A lower priority value indicates a higher priority.
+ * @retval None
+ */
+void HAL_NVIC_SetPriority(IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
+{
+ uint32_t prioritygroup = 0x00;
+
+ /* Check the parameters */
+ assert_param(IS_NVIC_SUB_PRIORITY(SubPriority));
+ assert_param(IS_NVIC_PREEMPTION_PRIORITY(PreemptPriority));
+
+ prioritygroup = NVIC_GetPriorityGrouping();
+
+ NVIC_SetPriority(IRQn, NVIC_EncodePriority(prioritygroup, PreemptPriority, SubPriority));
+}
+
+/**
+ * @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 (stm32f4xxxx.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 (stm32f4xxxx.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, MPU) functionalities.
+
+
+@endverbatim
+ * @{
+ */
+
+#if (__MPU_PRESENT == 1)
+/**
+ * @brief Initializes and configures the Region and the memory to be protected.
+ * @param MPU_Init: Pointer to a MPU_Region_InitTypeDef structure that contains
+ * the initialization and configuration information.
+ * @retval None
+ */
+void HAL_MPU_ConfigRegion(MPU_Region_InitTypeDef *MPU_Init)
+{
+ /* Check the parameters */
+ assert_param(IS_MPU_REGION_NUMBER(MPU_Init->Number));
+ assert_param(IS_MPU_REGION_ENABLE(MPU_Init->Enable));
+
+ /* Set the Region number */
+ MPU->RNR = MPU_Init->Number;
+
+ if ((MPU_Init->Enable) != RESET)
+ {
+ /* Check the parameters */
+ assert_param(IS_MPU_INSTRUCTION_ACCESS(MPU_Init->DisableExec));
+ assert_param(IS_MPU_REGION_PERMISSION_ATTRIBUTE(MPU_Init->AccessPermission));
+ assert_param(IS_MPU_TEX_LEVEL(MPU_Init->TypeExtField));
+ assert_param(IS_MPU_ACCESS_SHAREABLE(MPU_Init->IsShareable));
+ assert_param(IS_MPU_ACCESS_CACHEABLE(MPU_Init->IsCacheable));
+ assert_param(IS_MPU_ACCESS_BUFFERABLE(MPU_Init->IsBufferable));
+ assert_param(IS_MPU_SUB_REGION_DISABLE(MPU_Init->SubRegionDisable));
+ assert_param(IS_MPU_REGION_SIZE(MPU_Init->Size));
+
+ MPU->RBAR = MPU_Init->BaseAddress;
+ MPU->RASR = ((uint32_t)MPU_Init->DisableExec << MPU_RASR_XN_Pos) |
+ ((uint32_t)MPU_Init->AccessPermission << MPU_RASR_AP_Pos) |
+ ((uint32_t)MPU_Init->TypeExtField << MPU_RASR_TEX_Pos) |
+ ((uint32_t)MPU_Init->IsShareable << MPU_RASR_S_Pos) |
+ ((uint32_t)MPU_Init->IsCacheable << MPU_RASR_C_Pos) |
+ ((uint32_t)MPU_Init->IsBufferable << MPU_RASR_B_Pos) |
+ ((uint32_t)MPU_Init->SubRegionDisable << MPU_RASR_SRD_Pos) |
+ ((uint32_t)MPU_Init->Size << MPU_RASR_SIZE_Pos) |
+ ((uint32_t)MPU_Init->Enable << MPU_RASR_ENABLE_Pos);
+ }
+ else
+ {
+ MPU->RBAR = 0x00;
+ MPU->RASR = 0x00;
+ }
+}
+#endif /* __MPU_PRESENT */
+
+/**
+ * @brief Gets the priority grouping field from the NVIC Interrupt Controller.
+ * @retval Priority grouping field (SCB->AIRCR [10:8] PRIGROUP field)
+ */
+uint32_t HAL_NVIC_GetPriorityGrouping(void)
+{
+ /* Get the PRIGROUP[10:8] field value */
+ return NVIC_GetPriorityGrouping();
+}
+
+/**
+ * @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 (stm32f4xxxx.h))
+ * @param PriorityGroup: the priority grouping bits length.
+ * This parameter can be one of the following values:
+ * @arg NVIC_PRIORITYGROUP_0: 0 bits for preemption priority
+ * 4 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_1: 1 bits for preemption priority
+ * 3 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_2: 2 bits for preemption priority
+ * 2 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_3: 3 bits for preemption priority
+ * 1 bits for subpriority
+ * @arg NVIC_PRIORITYGROUP_4: 4 bits for preemption priority
+ * 0 bits for subpriority
+ * @param pPreemptPriority: Pointer on the Preemptive priority value (starting from 0).
+ * @param pSubPriority: Pointer on the Subpriority value (starting from 0).
+ * @retval None
+ */
+void HAL_NVIC_GetPriority(IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t *pPreemptPriority, uint32_t *pSubPriority)
+{
+ /* Check the parameters */
+ assert_param(IS_NVIC_PRIORITY_GROUP(PriorityGroup));
+ /* Get priority for Cortex-M system or device specific interrupts */
+ NVIC_DecodePriority(NVIC_GetPriority(IRQn), PriorityGroup, pPreemptPriority, pSubPriority);
+}
+
+/**
+ * @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 (stm32f4xxxx.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 (stm32f4xxxx.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 (stm32f4xxxx.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 Gets active interrupt ( reads the active register in NVIC and returns the active bit).
+ * @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 (stm32f4xxxx.h))
+ * @retval status: - 0 Interrupt status is not pending.
+ * - 1 Interrupt status is pending.
+ */
+uint32_t HAL_NVIC_GetActive(IRQn_Type IRQn)
+{
+ /* Check the parameters */
+ assert_param(IS_NVIC_DEVICE_IRQ(IRQn));
+
+ /* Return 1 if active else 0 */
+ return NVIC_GetActive(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 */
+/**
+ * @}
+ */
+
+/**
+ * @}
+ */
+
+/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/
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