- #include<reg52.h>
- #define uchar unsigned char
- #define uint unsigned int
- unsigned char TAB[]= {0xfe,0xfd,0xfb,0xf7,0xef,0xdf,0xbf,0x7f}; // 改变这dao里 LED 各种花样du
- uchar t,i;
- void main()
- {
- TMOD=0x10;
- TH1=(65535-50000)/256; // 50ms一次zhi
- TL1=(65535-50000)%256;
- EA=1;
- ET1=1;//开定时器dao1中断
- TR1=1;//启动定时器1
- t=0;
- i=1;
- P2=TAB[0];
- while(1)
- {
-
- if(t==20)
- {
-
- t=0;
-
- P2=TAB[i];
-
- i++;
-
- if(i==8)
- { i=0;}
-
- }
- }
- }
- void timer1() interrupt 3
- {
- TH1=(65535-50000)/256; // 50ms一次
- TL1=(65535-50000)%256;
- t++;
- }
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