花样流水灯仿真原理图如下(proteus仿真工程文件可到本帖附件中下载)由于红外是无法仿真的按键代替的红外遥控
单片机源程序如下:
- #include<reg51.h>
- #define uchar unsigned char
- #define uint unsigned int
- sbit IR=P3^2; //将IR位定义为P3.2引脚
- sbit key1=P2^0;
- sbit key2=P2^1;
- sbit key3=P2^2;
- sbit key4=P2^3;
- sbit key5=P2^4;
- sbit key6=P2^5;
- sbit key7=P2^6;
- sbit key8=P2^7;
- unsigned char a[4]; //储存用户码、用户反码与键数据码、键数据反码
- unsigned int LowTime,HighTime; //储存高、低电平的宽度
- unsigned char IrValue[6];
- unsigned char code Tab[10]={0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90};
- uchar code Pattern_P0[]=
- {
- 0xfc,0xf9,0xf3,0xe7,0xcf,0x9f,0x3f,0x7f,
- 0xe7,0xdb,0xbd,0x7e,0xbd,0xdb,0xe7,0xff,
- 0xe7,0xc3,0x81,0x00,0x81,0xc3,0xe7,0xff,
- 0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,
- 0xf8,0xf1,0xe3,0xc7,0x8f,0x1f,0x3f,0x7f,
- 0x7f,0x3f,0x1f,0x8f,0xc7,0xe3,0xf1,0xf8,
- 0x7f,0x3f,0x1f,0x0f,0x07,0x03,0x01,0x00,
- 0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,
- 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
- 0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff,
- 0x7f,0xbf,0xdf,0xef,0xf7,0xfb,0xfd,0xfe,
- 0xfe,0xfc,0xf8,0xf0,0xe0,0xc0,0x80,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
- 0x00,0x80,0xc0,0xe0,0xf0,0xf8,0xfc,0xfe,
- 0x00,0xff,0x00,0xff,0x00,0xff,0x00,0xff
- };
- uint k=0;
- int Time=0;
- //延时
- /************************************************************
- 函数功能:对4个字节的用户码和键数据码进行解码
- 说明:解码正确,返回1,否则返回0
- 出口参数:dat
- *************************************************************/
- bit DeCode(void)
- {
-
- unsigned char i,j;
- unsigned char temp; //储存解码出的数据
- for(i=0;i<4;i++) //连续读取4个用户码和键数据码
- {
- for(j=0;j<8;j++) //每个码有8位数字
- {
- temp=temp>>1; //temp中的各数据位右移一位,因为先读出的是高位数据
- TH0=0; //定时器清0
- TL0=0; //定时器清0
- TR0=1; //开启定时器T0
- while(IR==0) //如果是低电平就等待
- ; //低电平计时
- TR0=0; //关闭定时器T0
- LowTime=TH0*256+TL0; //保存低电平宽度
- TH0=0; //定时器清0
- TL0=0; //定时器清0
- TR0=1; //开启定时器T0
- while(IR==1) //如果是高电平就等待
- ;
- TR0=0; //关闭定时器T0
- HighTime=TH0*256+TL0; //保存高电平宽度
- if((LowTime<370)||(LowTime>640))
- return 0; //如果低电平长度不在合理范围,则认为出错,停止解码
- if((HighTime>420)&&(HighTime<620)) //如果高电平时间在560微秒左右,即计数560/1.085=516次
- temp=temp&0x7f; //(520-100=420, 520+100=620),则该位是0
- if((HighTime>1300)&&(HighTime<1800)) //如果高电平时间在1680微秒左右,即计数1680/1.085=1548次
- temp=temp|0x80; //(1550-250=1300,1550+250=1800),则该位是1
- }
- a[i]=temp; //将解码出的字节值储存在a[i]
- }
- if(a[2]=~a[3]) //验证键数据码和其反码是否相等,一般情况下不必验证用户码
- return 1; //解码正确,返回1
- }
- void delay(uint t)
- {
- uint i;
- while(t--)
- for(i=0;i<120;i++);
- }
- /************************************************************
- 函数功能:执行遥控功能
- *************************************************************/
- void Function(void)
- {
- if(a[2]==0x40)
- {
- k=k+1;
- if(k>=8)k=0;
- a[2]=0;
- } //对P1.3引脚取反,控制继电器的吸合、释放
-
- }
- void keyscan()
- {
- if(key1==0)
- {
- delay(1);
- if(key1==0)
- {
- k=0;
- while(!key1);
- }
- }
- if(key2==0)
- {
- delay(1);
- if(key2==0)
- {
- k=1;
- while(!key2);
- }
- }
- if(key3==0)
- {
- delay(1);
- if(key3==0)
- {
- k=2;
- while(!key3);
- }
- }
- if(key4==0)
- {
- delay(1);
- if(key4==0)
- {
- k=3;
- while(!key4);
- }
- }
- if(key5==0)
- {
- delay(1);
- if(key5==0)
- {
- k=4;
- while(!key5);
- }
- }
- if(key6==0)
- {
- delay(1);
- if(key6==0)
- {
- k=5;
- while(!key6);
- }
- }
- if(key7==0)
- {
- delay(1);
- if(key7==0)
- {
- k=6;
- while(!key7);
- }
- }
- if(key8==0)
- {
- delay(1);
- if(key8==0)
- {
- k=7;
- while(!key8);
- }
- }
- }
- //主程序
- void main()
- {
- uchar i;
- EA=1; //开启总中断
- EX0=1; //开外中断0
- ET0=1; //定时器T0中断允许
- IT0=1; //外中断的下降沿触发
- TMOD=0x01; //使用定时器T0的模式1
- TR0=0; //定时器T0关闭
- while(1)
- { //从数组中读取数据送至P0和P2口显示
-
- for(i=k*8;i<k*8+8;i++)
- {
- keyscan();
- P0=Pattern_P0[i];
- P1=Tab[k+1];
- delay(100);
- }
- }
- }
- /************************************************************
- 函数功能:红外线触发的外中断处理函数
- *************************************************************/
- void Int0(void) interrupt 0 using 0
- {
- EX0=0; //关闭外中断0,不再接收二次红外信号的中断,只解码当前红外信号
- TH0=0; //定时器T0的高8位清0
- TL0=0; //定时器T0的低8位清0
- TR0=1; //开启定时器T0
- while(IR==0) //如果是低电平就等待,给引导码低电平计时
- ;
- TR0=0; //关闭定时器T0
- LowTime=TH0*256+TL0; //保存低电平时间
- TH0=0; //定时器T0的高8位清0
- TL0=0; //定时器T0的低8位清0
- TR0=1; //开启定时器T0
- while(IR==1) //如果是高电平就等待,给引导码高电平计时
- ;
- TR0=0; //关闭定时器T0
- HighTime=TH0*256+TL0; //保存引导码的高电平长度
- if((LowTime>7800)&&(LowTime<8800)&&(HighTime>3600)&&(HighTime<4700))
- {
- //如果是引导码,就开始解码,否则放弃,引导码的低电平计时
- //次数=9000us/1.085=8294, 判断区间:8300-500=7800,8300+500=8800.
- if(DeCode()==1)
- Function(); //如果满足条件,执行遥控功能
- }
- EX0=1; //开启外中断EX0
- }
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