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5-2对射式红外传感器计次&旋转编码器计次

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对射式红外传感器计次

CountSensor.c

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#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);//开启AFIO外设
	//EXTI和NVIC外设为默认开启，无需手动开启
	//配置GPIO外设
	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;//上拉输入，默认高电平
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_14;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	//配置AFIO外设
	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;//下降沿触发
	EXTI_Init(&EXTI_InitStructure);
	//配置NVIC
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//整个芯片只执行一次，即整个工程只运行一次此代码
	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++;//触发中断，加1
		EXTI_ClearITPendingBit(EXTI_Line14);//清除中断
	}
}

mian.c

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


int main(void)
{
	OLED_Init();//初始化OLED
	CountSensor_Init();//初始化传感器
	OLED_ShowString(1,1,"Count:");
	
	while(1)
	{
		OLED_ShowNum(1,7,CountSensor_Get(),5);//调用CountSensor_Get()函数，得到计次值
	}
}

旋转编码器计次

Encoder.c

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#include "stm32f10x.h"                  // Device header

int16_t Encoder_Count;

void Encoder_Init(void)
{
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_GPIOB,ENABLE);
	RCC_APB2PeriphClockCmd(RCC_APB2Periph_AFIO,ENABLE);//开启AFIO外设
	//EXTI和NVIC外设为默认开启
	//配置GPIO外设
	GPIO_InitTypeDef GPIO_InitStructure;
	GPIO_InitStructure.GPIO_Mode = GPIO_Mode_IPU;//上拉输入，默认高电平
	GPIO_InitStructure.GPIO_Pin = GPIO_Pin_1 | GPIO_Pin_0;
	GPIO_InitStructure.GPIO_Speed = GPIO_Speed_50MHz;
	GPIO_Init(GPIOB, &GPIO_InitStructure);
	//配置AFIO外设
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource0);
	GPIO_EXTILineConfig(GPIO_PortSourceGPIOB,GPIO_PinSource1);
	
	EXTI_InitTypeDef EXTI_InitStructure;
	EXTI_InitStructure.EXTI_Line = EXTI_Line0 | EXTI_Line1;
	EXTI_InitStructure.EXTI_LineCmd = ENABLE;
	EXTI_InitStructure.EXTI_Mode = EXTI_Mode_Interrupt;
	EXTI_InitStructure.EXTI_Trigger = EXTI_Trigger_Falling;
	EXTI_Init(&EXTI_InitStructure);
	//配置NVIC
	NVIC_PriorityGroupConfig(NVIC_PriorityGroup_2);//整个芯片只执行一次，即整个工程只运行一次此代码
	NVIC_InitTypeDef NVIC_InitStructure;
	NVIC_InitStructure.NVIC_IRQChannel = EXTI0_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 1;
	NVIC_Init(&NVIC_InitStructure);
	
	NVIC_InitStructure.NVIC_IRQChannel = EXTI1_IRQn;
	NVIC_InitStructure.NVIC_IRQChannelCmd = ENABLE;
	NVIC_InitStructure.NVIC_IRQChannelPreemptionPriority = 1;
	NVIC_InitStructure.NVIC_IRQChannelSubPriority = 2;
	NVIC_Init(&NVIC_InitStructure);
}

int16_t Encoder_Get(void)
{
	int16_t Temp;
	Temp = Encoder_Count;
	Encoder_Count = 0;
	return Temp;
}

void EXTI0_IRQHandler(void)//反转
{
	if (EXTI_GetITStatus(EXTI_Line0) == SET)
	{
		if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_1) == 0)
		{
			Encoder_Count--;
		}
		EXTI_ClearITPendingBit(EXTI_Line0);
	}
}

void EXTI1_IRQHandler(void)//正传
{
	if (EXTI_GetITStatus(EXTI_Line1) == SET)
	{
		if(GPIO_ReadInputDataBit(GPIOB,GPIO_Pin_0) == 0)
		{
			Encoder_Count++;
		}
		EXTI_ClearITPendingBit(EXTI_Line1);
	}
}