stm32f4xx_hal_cortex.c File Reference

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. More...

#include "stm32f4xx_hal.h"

Go to the source code of this file.

Functions
void	HAL_NVIC_SetPriorityGrouping (uint32_t PriorityGroup)
	Sets the priority grouping field (preemption priority and subpriority) using the required unlock sequence.
void	HAL_NVIC_SetPriority (IRQn_Type IRQn, uint32_t PreemptPriority, uint32_t SubPriority)
	Sets the priority of an interrupt.
void	HAL_NVIC_EnableIRQ (IRQn_Type IRQn)
	Enables a device specific interrupt in the NVIC interrupt controller.
void	HAL_NVIC_DisableIRQ (IRQn_Type IRQn)
	Disables a device specific interrupt in the NVIC interrupt controller.
void	HAL_NVIC_SystemReset (void)
	Initiates a system reset request to reset the MCU.
uint32_t	HAL_SYSTICK_Config (uint32_t TicksNumb)
	Initializes the System Timer and its interrupt, and starts the System Tick Timer.
void	HAL_MPU_Disable (void)
	Disables the MPU.
void	HAL_MPU_Enable (uint32_t MPU_Control)
	Enable the MPU.
void	HAL_MPU_ConfigRegion (MPU_Region_InitTypeDef *MPU_Init)
	Initializes and configures the Region and the memory to be protected.
uint32_t	HAL_NVIC_GetPriorityGrouping (void)
	Gets the priority grouping field from the NVIC Interrupt Controller.
void	HAL_NVIC_GetPriority (IRQn_Type IRQn, uint32_t PriorityGroup, uint32_t *pPreemptPriority, uint32_t *pSubPriority)
	Gets the priority of an interrupt.
void	HAL_NVIC_SetPendingIRQ (IRQn_Type IRQn)
	Sets Pending bit of an external interrupt.
uint32_t	HAL_NVIC_GetPendingIRQ (IRQn_Type IRQn)
	Gets Pending Interrupt (reads the pending register in the NVIC and returns the pending bit for the specified interrupt).
void	HAL_NVIC_ClearPendingIRQ (IRQn_Type IRQn)
	Clears the pending bit of an external interrupt.
uint32_t	HAL_NVIC_GetActive (IRQn_Type IRQn)
	Gets active interrupt ( reads the active register in NVIC and returns the active bit).
void	HAL_SYSTICK_CLKSourceConfig (uint32_t CLKSource)
	Configures the SysTick clock source.
void	HAL_SYSTICK_IRQHandler (void)
	This function handles SYSTICK interrupt request.
__weak void	HAL_SYSTICK_Callback (void)
	SYSTICK callback.

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Detailed Description

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.

Author:

MCD Application Team

  ==============================================================================
                        ##### 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 programming 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
   
  

Attention:

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Definition in file stm32f4xx_hal_cortex.c.