单片机课设-交通灯proteus仿真及代码

#include<reg52.h> typedef unsigned char u8; typedef unsigned int u16; sbit res = P0^7; //复位按键 u8 i1 = 0,i2 = 1; u8 code numb[3] = {30,5,25};//红黄绿时间 u8 time1,time2; unsigned char code SMGnodot[10]= {0xc0,0xf9,0xa4,0xb0,0x99,0x92,0x82,0xf8,0x80,0x90}; unsigned char smgpos[8] = {0xff,0xff,0xff,0xff,0xff,0xff,0xff,0xff}; void smgshow() { static u8 pos = 0; P2 = 0x01<<pos; P0 = smgpos[pos]; pos++; if(pos == 4) pos = 0; } void smg() { smgpos[0]=SMGnodot[time1/10]; smgpos[1]=SMGnodot[time1%10]; smgpos[2]=SMGnodot[time2/10];; smgpos[3]=SMGnodot[time2%10]; } void led(u8 i1,u8 i2) { switch(i1) { case 0:P1 = (P1|0x07)&0xfe;break; case 1:P1 = (P1|0x07)&0xfd;break; case 2:P1 = (P1|0x07)&0xfb;break; } switch(i2) { case 0:P1 = (P1|0x38)&0xf7;break; case 1:P1 = (P1|0x38)&0xef;break; case 2:P1 = (P1|0x38)&0xdf;break; } } void key() { if(res == 0) { i1 = 0;i2 = 1; led(i1,i2); time1 = numb[i1]; time2 = numb[i2]; } } void Timer0Init() { TMOD |= 0x01; TH0 = (65536 - 1000) / 256; TL0 = (65536 - 1000) % 256; EA = 1; ET0 = 1; TR0 = 1; } u16 count; void SRC_Timer0()interrupt 1 { TH0 = (65536 - 1000) / 256; TL0 = (65536 - 1000) % 256; count++; if(count == 1000) { count = 0; time1--; time2--; if(time1 == 0xff) { i1++; if(i1>2) i1=0; time1 = numb[i1]; led(i1,i2); } if(time2 == 0xff) { i2++; if(i2>2) i2=0; time2 = numb[i2]; led(i1,i2); } } smgshow(); } void sysInit() { led(i1,i2); //灯初始化 time1 = numb[i1]; //倒计时初始化 time2 = numb[i2]; //倒计时初始化 Timer0Init(); } void main() { sysInit(); while(1) { key(); smg(); } }