基于单片机的出租车计价器设计 -

#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
uchar d_miao,d_fen = 0,d_shi;
uchar flag_bai_hei; //白天的晚上的标志位
uchar value;
uint bai_3l_price = 60; //白天3千米内的单价 6元
uint bai_3w_price = 18; //白天3千米外的单价/千米 1.8元
uint bai_wait_price = 5; //白天等待时的单价/分钟 0.5元
uint wan_3l_price = 70; //晚上3千米内的单价/千米 7元
uint wan_3w_price = 22; //晚上3千米外的单价/千米 2.2元
uint wan_wait_price = 10; //晚上等待时的单价/分钟 1元
uint distance = 0; //行使的距离
uint zong_jia; //总的价
bit flag_200ms = 0;
bit flag_1s ;
bit flag_time_en = 0;
uchar flag_time_xs = 1; //显示时间和等待时间切换
sbit beep = P3^7; //蜂鸣器IO口定义
uchar i;
sbit clk = P1^3; //ds1302时钟线定义
sbit io = P1^4; //数据线
sbit rst = P1^5; //复位线
//秒分时日月年星期
uchar code write_add[]={0x80,0x82,0x84,0x86,0x88,0x8c,0x8a}; //写地址
uchar code read_add[] ={0x81,0x83,0x85,0x87,0x89,0x8d,0x8b}; //读地址
uchar code init_ds[] ={0x55,0x17,0x15,0x01,0x05,0x15,0x13};
uchar idata miao,fen,shi,ri,yue,week,nian;
uchar t1_num,t2_num; //计时间中断的次数
unsigned long speed1,juli,time2;
float f_hz,speed_km,speed_m;
uchar TH11,TL11;
uchar flag_en; //开始计算速度使能
uchar flag_stop_en; //要确定车子是否停下了
uint juli_s; //每秒走的距离
uint juli_z; //总路程
float zhijing = 0.75; //直径 0.55M
bit flag_1s = 1; //1s
uchar menu_1; //菜单设置变量
uchar menu_2; //菜单设置变量
uint shudu; //定义速度的变量
uint bj_shudu = 80; //报警速度
uchar flag_ds_en;
long zong_lc; //总量程
#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++);
}
#include "iic.h"
void write_iic_data()
{
write_24c02(0,flag_bai_hei);
write_24c02(1,bai_3l_price % 256); //保存数据
write_24c02(2,bai_3l_price / 256); //保存数据
write_24c02(3,bai_3w_price % 256); //保存数据
write_24c02(4,bai_3w_price / 256); //保存数据
write_24c02(5,bai_wait_price % 256); //保存数据
write_24c02(6,bai_wait_price / 256); //保存数据
write_24c02(7,wan_3l_price % 256); //保存数据
write_24c02(8,wan_3l_price / 256); //保存数据
write_24c02(9,wan_3w_price % 256); //保存数据
write_24c02(10,wan_3w_price / 256); //保存数据
write_24c02(11,wan_wait_price % 256); //保存数据
write_24c02(12,wan_wait_price / 256); //保存数据
}
/****************读出来保存的数据**********************/
void read_iic_data()
{
flag_bai_hei = read_24c02(0);
bai_3l_price = read_24c02(2);
bai_3l_price = bai_3l_price * 256 + read_24c02(1);
bai_3w_price = read_24c02(4);
bai_3w_price = bai_3w_price * 256 + read_24c02(3);
bai_wait_price = read_24c02(6);
bai_wait_price = bai_wait_price * 256 + read_24c02(5);
wan_3l_price = read_24c02(8);
wan_3l_price = wan_3l_price * 256 + read_24c02(7);
wan_3w_price = read_24c02(10);
wan_3w_price = wan_3w_price * 256 + read_24c02(9);
wan_wait_price = read_24c02(12);
wan_wait_price = wan_wait_price * 256 + read_24c02(11);
}
/********************独立按键程序*****************/
uchar key_can; //按键值
void key() //独立按键程序
{
static uchar key_new;
key_can = 20; //按键值还原
P3 |= 0x78; //对应的按键IO口输出为1
if((P3 & 0x78) != 0x78) //按键按下
{
delay_1ms(1); //按键消抖动
if(((P3 & 0x78) != 0x78) && (key_new == 1))
{ //确认是按键按下
key_new = 0;
switch(P3 & 0x78)
{
case 0x70: key_can = 1; break; //得到按键值
case 0x68: key_can = 2; break; //得到按键值
case 0x58: key_can = 3; break; //得到按键值
case 0x38: key_can = 4; break; //得到按键值
}
beep = 0;
delay_1ms(50);
beep = 1;
}
}
else
key_new = 1;
}
/*************写一个数据到对应的地址里***************/
void write_ds1302(uchar add,uchar dat)
{
rst = 1; //把复位线拿高
for(i=0;i<8;i++)
{ //低位在前
clk = 0; //时钟线拿低开始写数据
io = add & 0x01;
add >>= 1; //把地址右移一位
clk = 1; //时钟线拿高
}
for(i=0;i<8;i++)
{
clk = 0; //时钟线拿低开始写数据
io = dat & 0x01;
dat >>= 1; //把数据右移一位
clk = 1; //时钟线拿高
}
rst = 0; //复位线合低
clk = 0;
io = 0;
}
/*************从对应的地址读一个数据出来***************/
uchar read_ds1302(uchar add)
{
uchar value,i;
rst = 1; //把复位线拿高
for(i=0;i<8;i++)
{ //低位在前
clk = 0; //时钟线拿低开始写数据
io = add & 0x01;
add >>= 1; //把地址右移一位
clk = 1; //时钟线拿高
}
for(i=0;i<8;i++)
{
clk = 0; //时钟线拿低开始读数据
value >>= 1;
if(io == 1)
value |= 0x80;
clk = 1; //时钟线拿高
}
rst = 0; //复位线合低
clk = 0;
io = 0;
return value; //返回读出来的数据
}
/*************把要的时间年月日都读出来***************/
void read_time()
{
miao = read_ds1302(read_add[0]); //读秒
fen = read_ds1302(read_add[1]); //读分
shi = read_ds1302(read_add[2]); //读时
ri = read_ds1302(read_add[3]); //读日
yue = read_ds1302(read_add[4]); //读月
nian = read_ds1302(read_add[5]); //读年
week = read_ds1302(read_add[6]); //读星期
}
/*************把要写的时间年月日都写入ds1302里***************/
void write_time()
{
write_ds1302(write_add[0],miao); //写秒
write_ds1302(write_add[1],fen); //写分
write_ds1302(write_add[2],shi); //写时
write_ds1302(write_add[3],ri); //写日
write_ds1302(write_add[4],yue); //写月
write_ds1302(write_add[5],nian); //写星期
write_ds1302(write_add[6],week); //写年
}
/**********************设置ds1302时间函数**********************/
void set_ds1302time(uchar num,uchar *shi,uchar dat) //调时
{
if(num == 1)
{
*shi+=0x01;
if((*shi & 0x0f) >= 0x0a)
*shi = (*shi & 0xf0) + 0x10;
if(*shi >= dat)
*shi = 0;
}
else
{
if(*shi == 0x00)
*shi = dat;
if((*shi & 0x0f) == 0x00)
*shi = (*shi | 0x0a) - 0x10;
*shi -=0x01 ;
}
}
#include "menu.h"
/*********************对应菜单内的处理函数******************/
void menu_dis()
{
if(menu_1 == 0)
{
if(key_can == 2) //清零从新计价
{
flag_time_en = 0;
d_shi = 0;
d_fen = 0;
flag_ds_en = 0;
}
if(key_can == 4) //时间和等待的时间的切换
{
flag_time_xs ++; //为1显示当前时间
if(flag_time_xs > 2)
flag_time_xs = 0;
if(flag_time_xs == 0) //显示时间
{
write_string(1,0," : : W: ");
write_string(2,0," 20 - - ");
}
}
if(flag_200ms == 1)
{
if(distance <= 30)//3公里内的价格
{
if(flag_bai_hei == 0)
{
if((d_fen == 0) && (d_miao <= 10))
zong_jia = bai_3l_price;
else
zong_jia = bai_3l_price + (d_shi * 60*60 + d_fen*60 + d_miao) * bai_wait_price -bai_wait_price*10;
}
else
{
if((d_fen == 0) && (d_miao <= 10))
zong_jia = wan_3l_price;
else
zong_jia = wan_3l_price + (d_shi * 60*60 + d_fen*60 + d_miao) * wan_wait_price -bai_wait_price*10;
}
}else //3公里外的价格
{
if(flag_bai_hei == 0)
{
if((d_fen == 0) && (d_miao <= 10))
zong_jia = bai_3l_price + bai_3w_price * (distance - 30) / 10 ;
else
zong_jia = bai_3l_price + bai_3w_price * (distance - 30) / 10 + (d_shi * 60*60 + d_fen*60 + d_miao) * bai_wait_price -bai_wait_price*10;
}
else
{
if((d_fen == 0) && (d_miao <= 10))
zong_jia = wan_3l_price + wan_3w_price * (distance - 30) / 10 ;
else
zong_jia = wan_3l_price + wan_3w_price * (distance - 30) / 10 + (d_shi * 60*60 + d_fen*60 + d_miao) * wan_wait_price -bai_wait_price*10;
}
}
if(flag_time_xs == 1) //显示当前的时间
{
write_sfm2_ds1302(2,0,shi); //显示时
write_data(':');
write_sfm2_ds1302(2,6,miao); //显示秒
write_sfm4(2,10,zong_jia);
write_sfm2(1,1,shudu);
write_sfm4(1,9,juli_z);
}
else if(flag_time_xs == 2) //显示等待时间
{
write_sfm2(2,1,d_fen); //显示分
write_data(':');
write_sfm2(2,4,d_miao); //显示秒
write_sfm2(1,1,shudu);
write_sfm4(1,9,juli_z);
}
else //显示当前的时间
{
write_sfm2_ds1302(1,2,shi); //显示时
write_sfm2_ds1302(1,5,fen); //显示分
write_sfm2_ds1302(1,8,miao); //显示秒
write_sfm1(1,14,week); //显示星期
write_sfm2_ds1302(2,6,yue); //显示月
write_sfm2_ds1302(2,9,ri); //显示日
}
}
}
}
/*******************停车计时函数 *****************/
void jishu_chashu()
{
if((flag_1s == 1) && (flag_time_en == 1))
{
if(flag_ds_en == 1)
{
d_miao++; //秒钟加1
if(d_miao >= 60)
{
d_miao = 0;
d_fen ++; //分钟加1
if(d_fen >= 60)
{
d_fen = 0;
d_shi++;
if(d_shi >= 24)
{
d_shi = 0;
}
}
}
}
}
}
/*************定时器0初始化程序***************/
void time_init()
{
EA = 1; //开总中断
TMOD = 0X11; //定时器0、工作方式1
ET0 = 1; //开定时器0中断
TR0 = 1; //允许定时器0定时
ET1 = 1; //开定时器1中断
TR1 = 1; //允许定时器1定时
}
/***********外部中断0初始化程序****************/
void init_int0()
{
EX0=1; //允许外部中断0中断
EA=1; //开总中断
IT0 = 1; //外部中断0负跳变中断
}
/***********计算速度函数**************/
void shudu_dis() //计算速度函数
{
static uchar value,value1;
if(menu_1 == 0)
{
if(flag_1s == 1)
{
flag_1s = 0;
if(flag_en == 0)
{
value ++;
if(value >= 3) //2秒
{
speed_km = 0; //速度为0
shudu = (uint)speed_km;
value = 0;
flag_time_en = 1;
}
}
if((flag_en == 1))
{
value = 0;
flag_en = 0;
//1s = 1 / 1000000us; // 1m/s=0.001km除以1/3600h=3.6km/h
f_hz =(t2_num * 65536.0 + TH11 * 256 + TL11) / 1000000; //算出来就是秒
speed_m = f_hz * zhijing * 3.14 ; //算出来的是m/s
juli_z = (juli_z + (uint)speed_m) ; //总路程m
speed_km = speed_m * 3.6 ; //(带个小数点) km/s
shudu = (uint)speed_km;
zong_lc += speed_m;
distance = juli_z;
value1++;
flag_time_en = 0;
}
}
}
}
/******************主函数*******************/
void main()
{
P0 = P1 = P2 = P3 = 0XFF; //让IO口全部输出高电平
init_1602(); //初始化1602液晶
init_1602_dis_csf(); //初始化1602液晶显示
read_iic_data(); //把保存的数据读出来
time_init(); //定时器初始化
init_int0();
while(1)
{
key(); //按键程序
menu_dis();
if(key_can < 20)
key_with();
shudu_dis(); //计算速度函数
if(flag_200ms == 1)
{
flag_200ms = 0;
if(menu_1 == 0)
read_time(); //读时间
if((shi >= 0x21) || (shi <= 5))
flag_bai_hei = 1; //晚上模式
else
flag_bai_hei = 0; //白天模式
}
}
}
/*************定时器0中断服务程序***************/
void time0_int() interrupt 1
{
static uchar value;
TH0 = 0x3c;
TL0 = 0xb0; // 50ms
value ++;
if(value % 4 == 0)
flag_200ms = 1;
if(value >= 20)
{
flag_1s = 1;
value = 0;
jishu_chashu();
}
}
/*********************外部中断0中断服务程序************************/
void int0() interrupt 0
{
static uchar value;
switch(value)
{
case 0:
t1_num = 0; //第一次就把变量清零
TH1 = 0;
TL1 = 0;
break;
case 1:
t2_num = t1_num; //保存
TH11 = TH1;
TL11 = TL1;
flag_en = 1;
break;
}
value ++;
if(value >= 2)
value =0;
}
/*************定时器1中断服务程序***************/
void time1_int() interrupt 3
{
t1_num++;
}

复制代码