//==文件exit.h============================================================
#ifndef __EXIT_H
#define __EXIT_H
#include "stm32f0xx.h"
extern void EXIT_HALL_Init(void);
#endif /* __EXIT_H */
//==文件exit.c============================================================
#include "global.h"
#include "exit.h"
//========霍尔 外部中断 初始化===========================
void EXIT_HALL_Init(void)
{
GPIO_InitTypeDef GPIO_InitStruct; //GPIO 定义
EXTI_InitTypeDef EXTI_InitStruct; //外部中断定义
NVIC_InitTypeDef NVIC_InitStruct; //嵌套中断定义
/* config the extiline(PB3 PB4 PB5) clock and AFIO clock */
RCC_APB2PeriphClockCmd(RCC_APB2Periph_SYSCFG, ENABLE);
RCC_AHBPeriphClockCmd(RCC_AHBPeriph_GPIOB, ENABLE);
/* Configyre P[A|B|C|D|E]3 NIVC */
NVIC_InitStruct.NVIC_IRQChannel = EXTI2_3_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPriority = 0x00;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
/* Configyre P[A|B|C|D|E]4 5 NIVC */
NVIC_InitStruct.NVIC_IRQChannel = EXTI4_15_IRQn;
NVIC_InitStruct.NVIC_IRQChannelPriority = 0x00;
NVIC_InitStruct.NVIC_IRQChannelCmd = ENABLE;
NVIC_Init(&NVIC_InitStruct);
/* EXTI line gpio config(PB3 PB4 PB5) */
GPIO_InitStruct.GPIO_Pin = GPIO_Pin_3|GPIO_Pin_4|GPIO_Pin_5;
GPIO_InitStruct.GPIO_Mode = GPIO_Mode_IN;
GPIO_InitStruct.GPIO_Speed = GPIO_Speed_Level_2;
GPIO_InitStruct.GPIO_PuPd = GPIO_PuPd_NOPULL;//GPIO_PuPd_UP; // 上拉输入
GPIO_Init(GPIOB, &GPIO_InitStruct);
/* EXTI line(PB3 PB4 PB5) mode config */
EXTI_ClearITPendingBit(EXTI_Line3);
EXTI_ClearITPendingBit(EXTI_Line4);
EXTI_ClearITPendingBit(EXTI_Line5);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource3);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource4);
SYSCFG_EXTILineConfig(EXTI_PortSourceGPIOB, EXTI_PinSource5);
EXTI_InitStruct.EXTI_Line = EXTI_Line3|EXTI_Line4|EXTI_Line5;
EXTI_InitStruct.EXTI_Mode = EXTI_Mode_Interrupt;
EXTI_InitStruct.EXTI_Trigger = EXTI_Trigger_Rising_Falling ;//EXTI_Trigger_Falling;//上 下降沿中断
EXTI_InitStruct.EXTI_LineCmd = ENABLE;
EXTI_Init(&EXTI_InitStruct);
}