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LED跑马灯（从右至左）#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintvoidDelayMS(uintx){uchari;while(x--){for(i=0;i<255;i++);}}voidmain(){P1=0xfe;while(1){if(P1==0xef)P1=0xfe;elseP1=_crol_(P1,1);DelayMS(80);}}LED跑马灯（从左至右）#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintvoidDelayMS(uintx){uchari;while(x--){for(i=0;i<255;i++);}}voidmain(){P1=0xef;while(1){if(P1==0x7f)P1=0xef;elseP1=_cror_(P1,1);DelayMS(40);}}LED跑马灯（左右循环）#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintvoidDelayMS(uintx){uchari;while(x--){for(i=0;i<255;i++);}}voidmain(){uchari;P1=0xef;while(1){for(i=0;i<4;i++){P1=_cror_(P1,1);DelayMS(40);}P1=0xfe;DelayMS(40);for(i=0;i<3;i++){P1=_crol_(P1,1);DelayMS(40);}}}P1=0xef;DelayMS(40);单个LED的闪烁#include<reg52.h>#defineucharunsignedchar#defineuintunsignedintsbitLED=P1^0;voidDelayMS(uintx){uchari;while(x--){for(i=120;i>0;i--);}}voidmain(){while(1){LED=~LED;DelayMS(150);}}连绵灯#include<reg51.h>#include<intrins.h>#defineucharunsignedchar#defineuintunsignedintvoidDelayMS(uintx){uchari;while(x--){for(i=0;i<255;i++);}}voidmain(){P1=0x0e;while(1){if(P1==0xb1)P1=0x0e;elseP1=_crol_(P1,1);DelayMS(80);}}
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