基于C51实现LED模拟交通灯.zip

#include <reg52.h> #define uchar unsigned char #define uint unsigned int sbit RED_A=P1^0; sbit YELLOW_A=P1^4; sbit GREEN_A=P1^2; sbit RED_B=P1^1; sbit YELLOW_B=P1^5; sbit GREEN_B=P1^3; uchar Flash_Count = 0; Operation_Type = 1; void DelayMS(uint x) { uchar t; while(x--) { for(t=120;t>0;t--); } } void Traffic_lignt() { switch(Operation_Type) { case 1: RED_A=1;YELLOW_A=1;GREEN_A=0; RED_B=0;YELLOW_B=1;GREEN_B=1; DelayMS(2000); Operation_Type = 2; break; case 2: DelayMS(200); YELLOW_A=~YELLOW_A; if(++Flash_Count !=10) return; Flash_Count=0; Operation_Type = 3; break; case 3: RED_A=0;YELLOW_A=1;GREEN_A=1; RED_B=1;YELLOW_B=1;GREEN_B=0; DelayMS(2000); Operation_Type = 4; break; case 4: DelayMS(200); YELLOW_B=~YELLOW_B; if(++Flash_Count !=10) return; Flash_Count=0; Operation_Type = 1; break; } } void main() { while(1) { Traffic_lignt(); } }