基于51单片机的出租车计价器设计(nokia5110显示,源程序和仿真)

ID:258375 · 发表于 2017-12-7 00:08

基于51单片机的出租车计价器，有两个独立按键一个是运行/停止按键另一个是停止时清零的按键

单片机源程序如下:

#include<reg52.h>
#include"nokia5110.h"
#include"ds1302.h"
unsigned int distance=0;
unsigned char S1_flag=0;
unsigned int price=0;
sbit S1=P3^2;//定义按键
sbit S2=P3^3;
void delay_ms(unsigned char ms)//延时k ms
{
unsigned char i,j;
for(i=0;i<ms;i++)
for(j=0;j<110;j++);
}
void Int_Init(void)//外部中断初始化
{
IT0=1;
EX0=1;
IT1=1;
EX1=1;
PT1=1;
EA=1;
}
void Timer0_Init(void) //定时器0初始化
{
TMOD|=0X05;
TH0=(65536-10)/256;
TL0=(65536-10)%256;
ET0=1;
TR0=1;
EA=1;
}
void Price_caculate(void)//价格计算根据距离和起步价
{ if(distance==0)price=0;
else if(distance<300)price=50;
else if(distance<1000){price=(distance-300)*0.5+50;}
else if(distance<2000){price=190+(distance-1000)*0.3;}
else {price=340+(distance-2000)*0.1;}
}
void Key_Handler(void)//按键处理
{
if(S1_flag==0){TR0=0;}
else if(S1_flag==1){TR0=1;S1_flag++;distance=0;}
}
void nokia5110_defaultshow(void)//显示屏固定显示
{
LCD_write_hanzi(0,0,0);
LCD_write_hanzi(2,0,1);
LCD_write_char(4,0,':');
LCD_write_shu(7,0,10);
LCD_write_char(10,0,'K');
LCD_write_char(12,0,'M');
LCD_write_hanzi(0,2,2);
LCD_write_hanzi(2,2,3);
LCD_write_char(4,2,':');
LCD_write_shu(8,2,10);
);
}
void show_time(void)//显示时间及计价器运行状态
{
LCD_write_shu(0,4,TIME[2]/16);
LCD_write_shu(1,4,TIME[2]%16);
LCD_write_char(2,4,':');
LCD_write_shu(3,4,TIME[1]/16);
LCD_write_shu(4,4,TIME[1]%16);
LCD_write_char(5,4,':');
LCD_write_shu(6,4,TIME[0]/16);
LCD_write_shu(7,4,TIME[0]%16);
if(S1_flag==0)
{
LCD_write_char(10,4,'O');
LCD_write_char(11,4,'F');
LCD_write_char(12,4,'F');
}else
{
LCD_write_char(10,4,'O');
LCD_write_char(11,4,'N');
LCD_write_char(12,4,' ');
}
}
void main()
{
LCD_init();
//Ds1302Init();
LCD_clear();
Timer0_Init();
Int_Init();
//
nokia5110_defaultshow();
while(1)
{
LCD_write_shu(5,0,distance/1000%10);//显示距离
LCD_write_shu(6,0,distance/100%10);
LCD_write_shu(8,0,distance/10%10);
LCD_write_shu(9,0,distance%10);
LCD_write_shu(5,2,price/1000%10);//显示价格
LCD_write_shu(6,2,price/100%10);
LCD_write_shu(7,2,price/10%10);
LCD_write_shu(9,2,price%10);
Key_Handler();//按键处理
Price_caculate();//价格计算
Ds1302ReadTime();//读取ds1302时间存放在数组TIME[];
show_time();//显示时间及计价器状态
}
}
void Timer0(void) interrupt 1//里程中断计数器模式
{
TH0=(65536-10)/256;
TL0=(65536-10)%256;
distance++;
}
void Int0() interrupt 0//按键中断
{
……………………
…………限于本文篇幅余下代码请从51黑下载附件…………

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ID:258375 · 发表于 2017-12-7 00:12

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基于51单片机的出租车计价器设计(nokia5110显示,源程序和仿真)

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