交通灯控制系统C语言版+Proteus原理图设计与仿真

#include"at89x51.h" unsigned char num[]={0x3f,0x06,0x5b,0x4f,0x66,0x6d,0x7d,0x07,0x7f,0x6f}; //数字0~9 unsigned char ctr[]={0xfa,0xf5}; //0xfa(P3_0和P3_2为0,即高位有效)0xf5(P3_1和P3_3为0,即低位有效) unsigned char disEW[2]; //记录东西向高低位数值 unsigned char disSN[2]; //记录南北向高低位数值 unsigned char v; unsigned char cnt_ctr; unsigned int scdEW,scdSN; unsigned int cntSN,cntEW; unsigned char cntP3_4,cntP3_5,cntP3_6; unsigned int cnt_num,cnt_key,cnt_flash,keyMemory; int greenEW = 20,yellowEW = 3,greenSN = 25,yellowSN = 5; //延时函数,a为1延时1毫秒 void delay_ms(unsigned int a) { int i; while(a--) { i = 70; while(i--); } } //设置红绿黄灯秒数 void setSecond(void) { while(P3_4 == 0); cntP3_4++; //标志设置键被按下的次数 switch(cntP3_4) { case 1: cntEW = 5; P1 = 0xf7; break; case 2: cntEW = 1; P1 = 0xef; break; case 3: cntSN = 1; P1 = 0xfe; break; case 4: cntSN = 3; P1 = 0xfd; break; case 5: cntEW = 5; cntSN = 5; cnt_num = 0; cntP3_4 = 0; break; } } //秒数加1 void addSecond(void) { while(P3_5 == 0); cnt_key = 0; //记录长按键的参数清零 switch(cntP3_4) { case 1: if(keyMemory != greenEW + 10) //判断按键是否已经加10,如果没有加10则秒数加1,如果已经加10则不加1 { greenEW++; } if(greenEW == 90) { greenEW = 0; } scdEW = greenEW; scdSN = greenEW + yellowEW + 1; break; case 2: if(yellowEW++ == 9) { yellowEW = 0; } scdEW = yellowEW; break; case 3: if(keyMemory != greenSN + 10) { greenSN++; } if( greenSN == 90) { greenSN = 0; } scdEW = greenSN + yellowSN + 1; scdSN = greenSN; break; case 4: if(yellowSN++ == 9) { yellowSN = 0; } scdSN = yellowSN; break; } } //秒数减1 void subSecond(void) { while(P3_6 == 0); cnt_key = 0; //记录长按键的参数清零 switch(cntP3_4) { case 1: if(keyMemory != greenEW - 10) //判断按键是否已经减10,如果没有减10则秒数减1,如果已经减10则不减1 { greenEW--; } if(greenEW == -1) { greenEW = 89; } scdEW = greenEW; scdSN = greenEW + yellowEW + 1; break; case 2: if(yellowEW-- == 0) { yellowEW = 9; } scdEW = yellowEW; break; case 3: if(keyMemory != greenSN - 10) { greenSN--; } if(greenSN == -1) { greenSN = 89; } scdEW = greenSN + yellowSN + 1; scdSN = greenSN; break; case 4: if(yellowSN-- == 0) { yellowSN = 9; } scdSN = yellowSN; break; } } //正常显示秒数 void display(void) { cnt_num++; if(cnt_ctr == 10) { cnt_ctr = 0; P3 = 0xff; P3 = ctr[v]; P2 = num[disEW[v]]; //显示东西方向秒数 P0 = num[disSN[v]]; //显示南北方向秒数 if(v++ == 1) { v = 0; } } } //闪烁显示秒数 void dspFlash(void) { cnt_flash++; if(cnt_flash < 660) { P3 = 0xff; //数码管灭 } else { if(cnt_flash == 1333) //数码管亮 1333=4000/3 即1秒闪3次 { cnt_flash = 0; } if(cnt_ctr == 25) { cnt_ctr = 0; P3 = 0xff; P3 = ctr[v]; switch(cntP3_4) { case 1: P3_0 = 1; P3_1 = 1; P2 = num[disEW[v]]; break; case 2: P3_0 = 1; P3_1 = 1; P2 = num[disEW[v]]; break; case 3: P3_2 = 1; P3_3 = 1; P0 = num[disSN[v]];; break; case 4: P3_2 = 1; P3_3 = 1; P0 = num[disSN[v]]; break; } if(v++ == 1) { v = 0; } } } } //长按加10秒 void add_10s(void) { cnt_key = 0; switch(cntP3_4) { case 1: greenEW = greenEW + 10; //长按秒数加10 if(greenEW >= 90) { greenEW = 0; } keyMemory = greenEW + 10; //keyMemory用来标记秒数已经加10 scdEW = greenEW; scdSN = greenEW + yellowEW + 1; break; case 3: greenSN = greenSN + 10; if(greenSN >=90) { greenSN = 0; } keyMemory = greenSN + 10; scdEW = greenSN + yellowSN + 1; scdSN = greenSN; break; } } //长按减10秒 void sub_10s(void) { cnt_key = 0; switch(cntP3_4) { case 1: greenEW = greenEW - 10; //长按秒数减10 if(greenEW < 0) { greenEW = 89; } keyMemory = greenEW - 10; //keyMemory用来标记秒数已经减10 scdEW = greenEW; scdSN = greenEW + yellowEW + 1; break; case 3: greenSN = greenSN - 10; if(greenSN < 0) { greenSN = 89; } keyMemory = greenSN - 10; scdEW = greenSN + yellowSN + 1; scdSN = greenSN; break; } } //T0中断 void t0(void) interrupt 1 { cnt_ctr++; if(cntP3_4 == 0) { display(); //正常显示秒数 } if(cntP3_4 != 0) { dspFlash(); //闪烁显示秒数 } if(cnt_num == 4000) { cnt_num = 0; if(scdEW-- == 0) { cntEW++; //东西向秒数减至0,标志位加1 } if(scdSN-- == 0) { cntSN++; //南北向秒数减至0,标志位加1 } } switch(cntEW) { case 1: scdEW = yellowEW; //东西向黄灯亮,显示黄灯秒数 P1_3 = 1; P1_4 = 0; P1_5 = 1; cntEW++; //避免程序到此阻塞,故将其至为2 break; case 3: //避免cntEW为2 scdEW = greenSN + yellowSN + 1; //东西向红灯亮,显示红灯秒数 P1_3 = 1; P1_4 = 1; P1_5 = 0; cntEW++; //避免程序到此阻塞,故将其至为4 break; case 5: //避免cntEW为4 scdEW = greenEW; //东西向绿灯亮,显示绿灯秒数 P1_3 = 0; P1_4 = 1; P1_5 = 1; cntEW = 0; break; } switch(cntSN) { case 1: scdSN = greenSN; //南北向绿灯亮,显示绿灯秒数 P1_0 = 0; P1_1 = 1; P1_2 = 1; cntSN++; //避免程序到此阻塞,故将其至为2 break; case 3: //避免cntSN为2 scdSN = yellowSN; //南北向黄灯亮,显示黄灯秒数 P1_0 = 1; P1_1 = 0; P1_2 = 1; cntSN++; //避免程序到此阻塞,故将其至为4 break; case 5: //避免cntSN为4 scdSN = greenEW + yellowEW + 1; //南北向红灯亮,显示红灯秒数 P1_0 = 1; P1_1 = 1; P1_2 = 0; cntSN = 0; break; } if(P3_5 == 0) { if(cnt_key++ == 4000) { add_10s(); //长按数码管加10秒 } } if(P3_6 == 0) { if(cnt_key++ == 4000) { sub_10s(); //长按数码管减10秒 } } disEW[0] = scdEW/10; disEW[1] = scdEW%10; disSN[0] = scdSN/10; disSN[1] = scdSN%10; } //主函数 void main(void) { TMOD = 0x02; //设置定时器0为工作方式2 TH0 = 0x06; TL0 = 0x06; //初始化8位定时器 (256 - 6)*40000 = 1s EA = 1; //总中断允许 ET0 = 1; //T0中断允许 TR0 = 1; //打开T0中断 P1 = 0xf3; //东西向绿灯,南北向红灯 P3_4 = 1; scdEW = greenEW; //设置东西向显示秒数 scdSN = greenEW + yellowEW + 1; //设置南北向显示秒数 while(1) { if(P3_4 == 0) { delay_ms(15); if(P3_4 == 0) { setSecond(); //设置红绿黄灯秒数 } } else if(P3_5 == 0) { delay_ms(15); if(P3_5 == 0) { addSecond(); } } else if(P3_6 == 0) { delay_ms(15); if(P3_6 == 0) { subSecond(); } } keyMemory = 200; //给keyMemory任意赋值,防止长按加10或减10后不能正常加减 } }