hw_config.c

STM32的低功耗例程

/******************** (C) COPYRIGHT 2007 STMicroelectronics ********************
* File Name          : hw_config.c
* Author             : MCD Application Team
* Version            : V1.0
* Date               : 10/10/2007
* Description        : Hardware configuration file.
********************************************************************************
* THE PRESENT SOFTWARE 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 SOFTWARE AND/OR THE USE MADE BY CUSTOMERS OF THE CODING
* INFORMATION CONTAINED HEREIN IN CONNECTION WITH THEIR PRODUCTS.
*******************************************************************************/

/* Includes ------------------------------------------------------------------*/
#include "stm32f10x_lib.h"
#include "hw_config.h"

/* Private typedef -----------------------------------------------------------*/
/* Private define ------------------------------------------------------------*/
/* Private macro -------------------------------------------------------------*/
/* Private variables ---------------------------------------------------------*/
/* Private function prototypes -----------------------------------------------*/
/* Private functions ---------------------------------------------------------*/

/*******************************************************************************
* Function Name  : RCC_Configuration
* Description    : Configures the different system clocks.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void RCC_Configuration(void)
{
  /* SYSCLK, HCLK, PCLK2 and PCLK1 configuration -----------------------------*/   
  /* RCC system reset(for debug purpose) */
  RCC_DeInit();
    
  /* HCLK = SYSCLK */
  RCC_HCLKConfig(RCC_SYSCLK_Div1); 
  
  /* PCLK2 = HCLK */
  RCC_PCLK2Config(RCC_HCLK_Div1); 

  /* PCLK1 = HCLK/2 */
  RCC_PCLK1Config(RCC_HCLK_Div2);
}

/*******************************************************************************
* Function Name  : GPIO_Config_ALL_AIN
* Description    : Configures the different GPIO ports as Analog Inputs.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void GPIO_Config_ALL_AIN(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable GPIOD and GPIOE clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOA | RCC_APB2Periph_GPIOB 
                         | RCC_APB2Periph_GPIOC | RCC_APB2Periph_GPIOD 
                         | RCC_APB2Periph_GPIOE | RCC_APB2Periph_AFIO, ENABLE);
  
  
  /* Disable the Serial Wire Jtag Debug Port SWJ-DP */
  GPIO_PinRemapConfig(GPIO_Remap_SWJ_Disable, ENABLE); 
  
    /* PA  */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOA, &GPIO_InitStructure);
      /* PB  */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOB, &GPIO_InitStructure);
      /* PC  */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
        /* PD  */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOD, &GPIO_InitStructure);
  
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_All;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_AIN;
  GPIO_Init(GPIOE, &GPIO_InitStructure);
}

/*******************************************************************************
* Function Name  : GPIO_Configuration
* Description    : Configures the GPIO PC0.6 port.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void GPIO_Configuration(void)
{
  GPIO_InitTypeDef GPIO_InitStructure;

  /* Enable GPIOC clock */
  RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOC, ENABLE);

  /* Configure PC.06 as Output push-pull 50MHz */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_6;
  GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_Out_PP;
  GPIO_Init(GPIOC, &GPIO_InitStructure);
  
}

/*******************************************************************************
* Function Name  : EXTI_Configuration
* Description    : Configures EXTI Line0.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void EXTI_Configuration(void)
{
  EXTI_InitTypeDef EXTI_InitStructure;
  GPIO_InitTypeDef GPIO_InitStructure;
  
  /* Configure PA.0 as input floating (EXTI Line0) */
  GPIO_InitStructure.GPIO_Pin = GPIO_Pin_0;
  GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;
  GPIO_Init(GPIOA, &GPIO_InitStructure);

  /* Connect EXTI Line0 to PA.0 */
  GPIO_EXTILineConfig(GPIO_PortSourceGPIOA, GPIO_PinSource0);

  /* Configure EXTI Line0 to generate an event or an interrupt on falling edge */
  EXTI_ClearITPendingBit(EXTI_Line0);
  EXTI_InitStructure.EXTI_Line = EXTI_Line0;

#ifdef Entry_WFE
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Event;
#endif
  
#ifdef Entry_WFI
  EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
#endif 
  
  EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Rising;
  EXTI_InitStructure.EXTI_LineCmd = ENABLE;
  EXTI_Init(&EXTI_InitStructure); 
}

/*******************************************************************************
* Function Name  : NVIC_Configuration
* Description    : Configures NVIC and Vector Table base location.
* Input          : None
* Output         : None
* Return         : None
*******************************************************************************/
void NVIC_Configuration(void)
{
#ifdef Entry_WFI
  NVIC_InitTypeDef NVIC_InitStructure;
  
  /* 2 bits for Preemption Priority and 2 bits for Sub Priority */
  NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
  
  NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQChannel;
  NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelSubPriority = 0;
  NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
  NVIC_Init(&NVIC_InitStructure);
#endif 
  
  /* Set the Vector Table base location at 0x08000000 */ 
  NVIC_SetVectorTable(NVIC_VectTab_FLASH, 0x0);
}

/******************* (C) COPYRIGHT 2007 STMicroelectronics *****END OF FILE****/