基于51单片机的简易交通灯(原理图+PCB+C程序代码+Protues仿真文件)

//交通灯 #include <reg51.h> #include <intrins.h> typedef unsigned char Uchar; typedef unsigned int Uint; #define ledport P0 #define north_south_time P1 #define east_west_time P2 sbit test = P3^4; sbit north_south_red=ledport^0; sbit north_south_yellow=ledport^1; sbit north_south_green=ledport^2; sbit east_west_red=ledport^3; sbit east_west_yellow=ledport^4; sbit east_west_green=ledport^5; //共阳数码管的显示码 Uchar discode[]={ 0xC0,0xF9,0xA4,0xB0, 0x99,0x92,0x82,0xF8,0x80,0x90,0x88,0x83, 0xC6,0xA1,0x86,0x8E}; //函数声明 void Delay_nms(Uint nms); void seg7_dis(Uchar Ntime); //主函数 void main() { ledport=0xff; //初始化，所有显示关闭 north_south_time=0xff; east_west_time=0xff; //南北绿，东西红，9秒，黄3秒，南北绿，东西红，9秒，黄3秒 while(1) { north_south_green=0;east_west_red=0; seg7_dis(9); north_south_green=1;east_west_red=1; north_south_yellow=0;east_west_yellow=0; seg7_dis(3); north_south_yellow=1;east_west_yellow=1; north_south_red=0;east_west_green=0; seg7_dis(9); north_south_yellow=0;east_west_yellow=0; north_south_red=1;east_west_green=1; seg7_dis(3); north_south_yellow=1;east_west_yellow=1; } } void Delay_nms(Uint nms) //@11.0592MHz ,1ms*N { Uchar i, j; do{ _nop_(); i = 2; j = 219; do { while (--j); } while (--i); } while(--nms); } //共阳数码管显示 void seg7_dis(Uchar Ntime) { Uchar tmp; do{ tmp=discode[Ntime]; north_south_time=tmp; east_west_time=tmp; Delay_nms(1000); }while(--Ntime); }