单片机模拟交通灯(定时器、led、数码管).doc

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1、/***更多内容继续上传****/#include#defineucharunsignedcharsbitNR=P2^2;sbitNY=P2^1;sbitNG=P2^0;sbitWR1=P2^3;sbitWY=P2^4;sbitWG=P2^5;sbitSR=P3^0;sbitSY=P3^1;sbitSG=P3^2;sbitER=P3^5;sbitEY=P3^4;sbitEG=P3^3;ucharcodedisplay[]={0xc0,0xf9,0xa4,0xb0,//共阳极数码管显示段码0x99,0x92,0x82,0xf8,0x80,0

2、x90,0x88,0x83,0xc6,0xa1,0x86,0x8e,};uchars1=10,Time_count=0;ucharFlash_count=0;ucharOperation_Type=1;voidscan(){P0=display[s1];}voidT0_Time()interrupt1{TH0=(65535-50000)/256;TH0=(65535-50000)%256;switch(Operation_Type){case1:{ER=WR1=1;EY=WY=1;EG=WG=0;SR=NR=0;SY=NY=1;SG=NG=1;s1=Tim

3、e_count/20;if(++Time_count!=200){return;}Time_count=0;Operation_Type=2;}break;case2:{if(++Time_count!=20){return;}Time_count=0;EG=WG=1;EY=WY=~WY;s1=Time_count/20;if(++Flash_count!=10)//闪烁5次{return;}Flash_count=0;Operation_Type=3;}break;case3:{ER=WR1=0;EY=WY=1;EG=WG=1;SR=NR=1;SY=NY

4、=1;SG=NG=0;s1=Time_count/20;if(++Time_count!=200){return;}Time_count=0;Operation_Type=4;}break;case4:{if(++Time_count!=20){return;}Time_count=0;NY=SY=~NY;NG=SG=1;s1=Time_count/20;if(++Flash_count!=10){return;}Flash_count=0;Operation_Type=1;}break;}}voidmain(){TMOD=0x01;TH0=(65535-

5、50000)/256;TL0=(65535-50000)%256;EA=1;ET0=1;TR0=1;while(1)scan();}