2024/4/25 红外遥控代码

51完结撒花！！！

这块如果IR听不懂可以看看那个状态机的相关视频。

Int0.c 

#include <REGX52.H>
 
void Int0_Init(void)
{
	IT0=1;
	IE0=0;
	EX0=1;
	EA=1;
	PX0=1;
}
 
//void Int0_Routine(void)   interrupt 0
//{
//		Num++;
//}

Timer0.c 

#include <REGX52.H>
 
/**
  * @brief  定时器0初始化，1毫秒@12.000MHz
  * @param  无
  * @retval 无
  */
void Timer0_Init(void)         //10us
{
	TMOD &= 0xF0;		//设置定时器模式
	TMOD |= 0x01;		//设置定时器模式
	TL0 = 0xA4;		//设置定时初值
	TH0 = 0xFF;		//设置定时初值
	TF0 = 0;		//清除TF0标志
	TR0 = 1;		//定时器0不计时
}
 
void Timer0SetCounter(unsigned int Value)//把传过来的十六位数据拆成两个八位存进寄存器，设置初始值（要拆掉才能存）
{
	TH0=Value/256;
	TL0=Value%256;
}
 
unsigned int Timer0_GetCounter(void)//把定时器里变化后的数据拿出来，得到时间差
{
	return (TH0<<8)|TL0;
}
 
void Timer0_Run(unsigned char Flag)//主函数里启动定时器的开关
{
	TR0=Flag;
}

IR.c 

#include <REGX52.H>
#include "Timer0.h"
#include "Int0.h"
 
 
unsigned int IR_Time;
unsigned char IR_State;
 
unsigned char IR_Data[4];
unsigned char IR_pData;
 
unsigned char IR_DataFlag;
unsigned char IR_RepeatFlag;
unsigned char IR_Address;
unsigned char IR_Command;
 
void IR_Init(void)
{
	Timer0_Init();
	Int0_Init();
}
 
unsigned char IR_GetDataFlag(void)
{
	if(IR_DataFlag)
	{
		IR_DataFlag=0;
		return 1;
	}
	return 0;
}
 
unsigned char IR_GetRepeatFlag(void)
{
	if(IR_RepeatFlag)
	{
		IR_RepeatFlag=0;
		return 1;
	}
	return 0;
}
 
unsigned char IR_GetAddress(void)
{
	return IR_Address;
}
 
unsigned char IR_GetCommand(void)
{
	return IR_Command;
}
 
void Int0_Routine(void) interrupt 0
{
	if(IR_State==0)
	{
		Timer0SetCounter(0);
		Timer0_Run(1);
		IR_State=1;
	}
	else if(IR_State==1)
	{
		IR_Time=Timer0_GetCounter();
		Timer0SetCounter(0);
		if(IR_Time>12442-500&&IR_Time<12442+500)
		{
			IR_State=2;
		}
		else if(IR_Time>10368-500&&IR_Time<10368+500)
		{
			IR_RepeatFlag=1;
			Timer0_Run(0);
			IR_State=0;
		}
		else
		{
			IR_State=1;
		}
	}
	else if(IR_State==2)
	{
		IR_Time=Timer0_GetCounter();
		Timer0SetCounter(0);
		if(IR_Time>1032-500&&IR_Time<1032+500)
		{
			IR_Data[IR_pData/8]&=~(0x01<<(IR_pData%8));
			IR_pData++;
		}
		else if(IR_Time>2074-500&&IR_Time<2074+500)
		{
			IR_Data[IR_pData/8]|=(0x01<<(IR_pData%8));
			IR_pData++;
		}
		else
		{
			IR_pData=0;
			IR_State=1;
		}
		if(IR_pData>=32)
		{
			IR_pData=0;
			if((IR_Data[0]==~IR_Data[1])&&(IR_Data[2]==~IR_Data[3]))
			{
				IR_Address=IR_Data[0];
				IR_Command=IR_Data[2];
				IR_DataFlag=1;
			}
			Timer0_Run(0);
			IR_State=0;
		}
	}
}

main.c 

#include <REGX52.H>
#include "LCD1602.h"
#include "Delay.h"
#include "IR.h"
 
unsigned int Num;
unsigned char Address;
unsigned char Command;
void main()
{
	LCD_Init();
	LCD_ShowString(1,1,"ADDR  CMD  NUM");
	LCD_ShowString(2,1,"00    00   000");
	IR_Init();
	
	while(1)
	{
		if(IR_GetDataFlag()|| IR_GetRepeatFlag())
		{
			Address=IR_GetAddress();
			Command=IR_GetCommand();
			
			LCD_ShowHexNum(2,1,Address,2);
			LCD_ShowHexNum(2,7,Command,2);
			
			if(Command==IR_VOL_MINUS)
			{
				Num--;
			}
			if(Command==IR_VOL_ADD)
			{
				Num++;
			}
			LCD_ShowNum(2,12,Num,3);
		}
	}
}