红外传感器计次 STM32单片机

#include "stm32f10x.h"                  // Device header
#include "Delay.h"
#include "OLED.h"
#include "CountSensor.h"


int main(void)
{
	OLED_Init();
	CountSensor_Init();
	OLED_ShowString(1,1,"Count:");


	while(1)
	{
		OLED_ShowNum(1,7,CountSensor_Get(),5);
	}
}

#include "stm32f10x.h"                  // Device header
uint16_t CountSensor_Count;
void CountSensor_Init(void)
{
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);
	
	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;    // 
	GPIO_InitStructure.GPIO_Pin  = GPIO_Pin_14;          // PA0
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);      
	
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource14);
	EXTI_InitTypeDef EXTI_InitStructure;
	EXTI_InitStructure.EXTI_Line=EXTI_Line14;
	EXTI_InitStructure.EXTI_LineCmd=ENABLE;
	EXTI_InitStructure.EXTI_Mode=EXTI_Mode_Interrupt;
	EXTI_InitStructure.EXTI_Trigger=EXTI_Trigger_Falling;
	EXTI_Init(&EXTI_InitStructure);
	
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);
	NVIC_InitTypeDef NVIC_InitStructure;
	NVIC_InitStructure.NVIC_IRQChannel=EXTI15_10_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelCmd=ENABLE;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority=1;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority=1;
	NVIC_Init(&NVIC_InitStructure);

	
	
}
uint16_t CountSensor_Get(void)
{
	return CountSensor_Count;
}

void EXTI15_10_IRQHandler(void)
{
	if (EXTI_GetITStatus(EXTI_Line14)==SET)
	{
		CountSensor_Count ++;
		EXTI_ClearITPendingBit(EXTI_Line14);
	}
}

#ifndef __COUNTSENSOR_H
#define __COUNTSENSOR_H
void CountSensor_Init(void);

#endif