/** | |
****************************************************************************** | |
* @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 | |
* | |
* <h2><center>© COPYRIGHT(c) 2016 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 "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 */ | |
/** | |
* @} | |
*/ | |
/** | |
* @} | |
*/ | |
/************************ (C) COPYRIGHT STMicroelectronics *****END OF FILE****/ |