基于51单片机流量统计系统仿真设计（源程序、Proteus仿真）

#include <reg52.h> //调用单片机头文件 #define uchar unsigned char //无符号字符型 宏定义 变量范围0~255 #define uint unsigned int //无符号整型 宏定义 变量范围0~65535 #include <intrins.h> sbit K1=P1^0; sbit K2=P1^1; sbit K3=P1^2; sbit K4=P1^3; sbit beep = P1^7; //蜂鸣器IO口定义 sbit SH = P3^5; sbit ST = P3^6; sbit DS = P3^7; uchar num_jin; uchar num_chu; uchar num_car; #include "lcd1602.h" /***********************1ms延时函数*****************************/ void delay_1ms(uint q) { uint i,j; for(i=0;i<q;i++) for(j=0;j<120;j++); } void write_74hc595(unsigned int num) { int i; ST = 0; for(i=0; i<16; i++) { SH = 0; if (num & 0x0001) { DS = 1; } else { DS = 0; } SH = 1; num >>= 1; } ST = 1; } unsigned int num_2_led(unsigned int num) { int i; unsigned int ret=0; if (num > 16) return 0xFFFF; for(i=0;i<num;i++) { ret |= 1<<i; } return ret; } void key() //独立按键程序 { if(!K1) // 汽车进入 { delay_1ms(20); if(!K1) { while(!K1) ; if(num_car==16) { beep=0; delay_1ms(200); beep=1;} if(num_car<16) { num_car++; if(num_jin<=255) { num_jin++;} } write_sfm2(1,4,num_jin); write_sfm2(1,12,num_chu); write_sfm2(2,4,num_car); write_sfm2(2,12,16-num_car); write_74hc595(num_2_led(num_car)); } } if(!K2) // // 汽车驶出 { delay_1ms(20); if(!K2) { while(!K2); if(num_car>=1) { num_car--; if(num_chu<=255) { num_chu++;} } write_sfm2(1,4,num_jin); write_sfm2(1,12,num_chu); write_sfm2(2,4,num_car); write_sfm2(2,12,16-num_car); write_74hc595(num_2_led(num_car)); } } /***********************手动修改小区内停车位*************************************/ if(!K3) // 人工调节 { delay_1ms(20); if(!K3) { while(!K3); if(num_car<16) { num_car++; } write_sfm2(1,4,num_jin); write_sfm2(1,12,num_chu); write_sfm2(2,4,num_car); write_sfm2(2,12,16-num_car); } } if(!K4) // // 人工调节 { delay_1ms(20); if(!K4) { while(!K4); if(num_car>=1) { num_car--; } write_sfm2(1,4,num_jin); write_sfm2(1,12,num_chu); write_sfm2(2,4,num_car); write_sfm2(2,12,16-num_car); } } } /***************主函数*****************/ void main() { init_1602(); write_string(1,0,"Jin: Chu:"); write_string(2,0,"Car: P:"); write_sfm2(1,4,num_jin); write_sfm2(1,12,num_chu); write_sfm2(2,4,num_car); write_sfm2(2,12,16-num_car); write_74hc595(0); while(1) { key(); //独立按键程序 } }