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/** |
****************************************************************************** |
* @file misc.c |
* @author MCD Application Team |
* @version V3.4.0 |
* @date 10/15/2010 |
* @brief This file provides all the miscellaneous firmware functions (add-on |
* to CMSIS functions). |
****************************************************************************** |
* @copy |
* |
* THE PRESENT FIRMWARE WHICH IS FOR GUIDANCE ONLY AIMS AT PROVIDING CUSTOMERS |
* WITH CODING INFORMATION REGARDING THEIR PRODUCTS IN ORDER FOR THEM TO SAVE |
* TIME. AS A RESULT, STMICROELECTRONICS SHALL NOT BE HELD LIABLE FOR ANY |
* DIRECT, INDIRECT OR CONSEQUENTIAL DAMAGES WITH RESPECT TO ANY CLAIMS ARISING |
* FROM THE CONTENT OF SUCH FIRMWARE AND/OR THE USE MADE BY CUSTOMERS OF THE |
* CODING INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS. |
* |
* <h2><center>© COPYRIGHT 2010 STMicroelectronics</center></h2> |
*/ |
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/* Includes ------------------------------------------------------------------*/ |
#include "misc.h" |
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/** @addtogroup STM32F10x_StdPeriph_Driver |
* @{ |
*/ |
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/** @defgroup MISC |
* @brief MISC driver modules |
* @{ |
*/ |
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/** @defgroup MISC_Private_TypesDefinitions |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup MISC_Private_Defines |
* @{ |
*/ |
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#define AIRCR_VECTKEY_MASK ((uint32_t)0x05FA0000) |
/** |
* @} |
*/ |
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/** @defgroup MISC_Private_Macros |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup MISC_Private_Variables |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup MISC_Private_FunctionPrototypes |
* @{ |
*/ |
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/** |
* @} |
*/ |
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/** @defgroup MISC_Private_Functions |
* @{ |
*/ |
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/** |
* @brief Configures the priority grouping: pre-emption priority and subpriority. |
* @param NVIC_PriorityGroup: specifies the priority grouping bits length. |
* This parameter can be one of the following values: |
* @arg NVIC_PriorityGroup_0: 0 bits for pre-emption priority |
* 4 bits for subpriority |
* @arg NVIC_PriorityGroup_1: 1 bits for pre-emption priority |
* 3 bits for subpriority |
* @arg NVIC_PriorityGroup_2: 2 bits for pre-emption priority |
* 2 bits for subpriority |
* @arg NVIC_PriorityGroup_3: 3 bits for pre-emption priority |
* 1 bits for subpriority |
* @arg NVIC_PriorityGroup_4: 4 bits for pre-emption priority |
* 0 bits for subpriority |
* @retval None |
*/ |
void NVIC_PriorityGroupConfig(uint32_t NVIC_PriorityGroup) |
{ |
/* Check the parameters */ |
assert_param(IS_NVIC_PRIORITY_GROUP(NVIC_PriorityGroup)); |
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/* Set the PRIGROUP[10:8] bits according to NVIC_PriorityGroup value */ |
SCB->AIRCR = AIRCR_VECTKEY_MASK | NVIC_PriorityGroup; |
} |
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/** |
* @brief Initializes the NVIC peripheral according to the specified |
* parameters in the NVIC_InitStruct. |
* @param NVIC_InitStruct: pointer to a NVIC_InitTypeDef structure that contains |
* the configuration information for the specified NVIC peripheral. |
* @retval None |
*/ |
void NVIC_Init(NVIC_InitTypeDef* NVIC_InitStruct) |
{ |
uint32_t tmppriority = 0x00, tmppre = 0x00, tmpsub = 0x0F; |
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/* Check the parameters */ |
assert_param(IS_FUNCTIONAL_STATE(NVIC_InitStruct->NVIC_IRQChannelCmd)); |
assert_param(IS_NVIC_PREEMPTION_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority)); |
assert_param(IS_NVIC_SUB_PRIORITY(NVIC_InitStruct->NVIC_IRQChannelSubPriority)); |
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if (NVIC_InitStruct->NVIC_IRQChannelCmd != DISABLE) |
{ |
/* Compute the Corresponding IRQ Priority --------------------------------*/ |
tmppriority = (0x700 - ((SCB->AIRCR) & (uint32_t)0x700))>> 0x08; |
tmppre = (0x4 - tmppriority); |
tmpsub = tmpsub >> tmppriority; |
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tmppriority = (uint32_t)NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << tmppre; |
tmppriority |= NVIC_InitStruct->NVIC_IRQChannelSubPriority & tmpsub; |
tmppriority = tmppriority << 0x04; |
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NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel] = tmppriority; |
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/* Enable the Selected IRQ Channels --------------------------------------*/ |
NVIC->ISER[NVIC_InitStruct->NVIC_IRQChannel >> 0x05] = |
(uint32_t)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (uint8_t)0x1F); |
} |
else |
{ |
/* Disable the Selected IRQ Channels -------------------------------------*/ |
NVIC->ICER[NVIC_InitStruct->NVIC_IRQChannel >> 0x05] = |
(uint32_t)0x01 << (NVIC_InitStruct->NVIC_IRQChannel & (uint8_t)0x1F); |
} |
} |
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/** |
* @brief Sets the vector table location and Offset. |
* @param NVIC_VectTab: specifies if the vector table is in RAM or FLASH memory. |
* This parameter can be one of the following values: |
* @arg NVIC_VectTab_RAM |
* @arg NVIC_VectTab_FLASH |
* @param Offset: Vector Table base offset field. This value must be a multiple of 0x100. |
* @retval None |
*/ |
void NVIC_SetVectorTable(uint32_t NVIC_VectTab, uint32_t Offset) |
{ |
/* Check the parameters */ |
assert_param(IS_NVIC_VECTTAB(NVIC_VectTab)); |
assert_param(IS_NVIC_OFFSET(Offset)); |
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SCB->VTOR = NVIC_VectTab | (Offset & (uint32_t)0x1FFFFF80); |
} |
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/** |
* @brief Selects the condition for the system to enter low power mode. |
* @param LowPowerMode: Specifies the new mode for the system to enter low power mode. |
* This parameter can be one of the following values: |
* @arg NVIC_LP_SEVONPEND |
* @arg NVIC_LP_SLEEPDEEP |
* @arg NVIC_LP_SLEEPONEXIT |
* @param NewState: new state of LP condition. This parameter can be: ENABLE or DISABLE. |
* @retval None |
*/ |
void NVIC_SystemLPConfig(uint8_t LowPowerMode, FunctionalState NewState) |
{ |
/* Check the parameters */ |
assert_param(IS_NVIC_LP(LowPowerMode)); |
assert_param(IS_FUNCTIONAL_STATE(NewState)); |
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if (NewState != DISABLE) |
{ |
SCB->SCR |= LowPowerMode; |
} |
else |
{ |
SCB->SCR &= (uint32_t)(~(uint32_t)LowPowerMode); |
} |
} |
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/** |
* @brief Configures the SysTick clock source. |
* @param SysTick_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 SysTick_CLKSourceConfig(uint32_t SysTick_CLKSource) |
{ |
/* Check the parameters */ |
assert_param(IS_SYSTICK_CLK_SOURCE(SysTick_CLKSource)); |
if (SysTick_CLKSource == SysTick_CLKSource_HCLK) |
{ |
SysTick->CTRL |= SysTick_CLKSource_HCLK; |
} |
else |
{ |
SysTick->CTRL &= SysTick_CLKSource_HCLK_Div8; |
} |
} |
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/** |
* @} |
*/ |
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/** |
* @} |
*/ |
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/** |
* @} |
*/ |
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/******************* (C) COPYRIGHT 2010 STMicroelectronics *****END OF FILE****/ |