Fwlib-src

/**


  • @file misc.c
  • @author MCD Application Team
  • @version V3.5.0
  • @date 11-March-2011
  • @brief This file provides all the miscellaneous firmware functions (add-on
  •      to CMSIS functions).
    

  • @attention
    *
  • 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.
    *
  • © COPYRIGHT 2011 STMicroelectronics


*/

/* Includes ------------------------------------------------------------------*/
#include “misc.h”

/** @addtogroup STM32F10x_StdPeriph_Driver

  • @{
    */

/** @defgroup MISC

  • @brief MISC driver modules
  • @{
    */

/** @defgroup MISC_Private_TypesDefinitions

  • @{
    */

/**

  • @}
    */

/** @defgroup MISC_Private_Defines

  • @{
    */

#define AIRCR_VECTKEY_MASK ((uint32_t)0x05FA0000)
/**

  • @}
    */

/** @defgroup MISC_Private_Macros

  • @{
    */

/**

  • @}
    */

/** @defgroup MISC_Private_Variables

  • @{
    */

/**

  • @}
    */

/** @defgroup MISC_Private_FunctionPrototypes

  • @{
    */

/**

  • @}
    */

/** @defgroup MISC_Private_Functions

  • @{
    */

/**

  • @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));

/* Set the PRIGROUP[10:8] bits according to NVIC_PriorityGroup value */
SCB->AIRCR = AIRCR_VECTKEY_MASK | NVIC_PriorityGroup;
}

/**

  • @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;

/* 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));

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;

tmppriority = (uint32_t)NVIC_InitStruct->NVIC_IRQChannelPreemptionPriority << tmppre;
tmppriority |=  NVIC_InitStruct->NVIC_IRQChannelSubPriority & tmpsub;
tmppriority = tmppriority << 0x04;
    
NVIC->IP[NVIC_InitStruct->NVIC_IRQChannel] = tmppriority;

/* 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);
}
}

/**

  • @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 0x200.
    
  • @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));

SCB->VTOR = NVIC_VectTab | (Offset & (uint32_t)0x1FFFFF80);
}

/**

  • @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));

if (NewState != DISABLE)
{
SCB->SCR |= LowPowerMode;
}
else
{
SCB->SCR &= (uint32_t)(~(uint32_t)LowPowerMode);
}
}

/**

  • @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;
    }
    }

/**

  • @}
    */

/**

  • @}
    */

/**

  • @}
    */

/******************* © COPYRIGHT 2011 STMicroelectronics *END OF FILE/