超声波测距离加温度显示Word文档格式.docx
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#defineDataPortP0//MCUP0<
------>
LCM
#defineucharunsignedchar
#defineuintunsignedint
//***********FunctionDefinition*********************//
//****************函数声明***************************//
voidLCD_Write_number（uchars）;
voidWrite_char（bitstart,ucharddata）;
//写入某坐标
voidSend_byte（ucharbbyte）;
voidLcd_init（void）;
//lcd初始化
voidDisp_img（uchar*img）;
//显示图片
voidLCD_Write_string（ucharX,ucharY,uchar*s）;
//写入某字符串
voidLCD_set_xy（ucharx,uchary）;
voidLcd_Mark3（void）;
//画面3
voidLcd_Mark2（void）;
//画面2
bittemp_flag;
//判断DS18B20正常工作位
DS18B20_init（）;
//DS18B20初始化
voiddelay（uintnum）;
//DS18B20延时函数
voidDelaynms（uintdi）;
//短延时
voiddelayms（uintx）;
//1ms延时函数
readonebyte（void）;
//读一个字节函数
voidwriteonebyte（uchardat）;
//写一个字节函数
voidgettemperture（void）;
//获取温度值
voidtemperture_display（）;
//温度显示函数
voidtempconv（）;
//温度转换
voidbeep（）;
//蜂鸣器响一声函数
voidtimer_init（）;
//中断初始化函数（计数器0，计数器1，定时器2）
voidzhuansu_display（）;
//转速显示函数
voidspeed_conv（）;
//速度转换函数
voidspeed_display（）;
//速度显示函数
voidchaoshengbo_conv（void）;
//超声波转换
//***************变量定义*****************//
uchardatatemp_dat[2]={0};
//temp[0],temp[1]用来存放温度的低、高8位
uchardataDQdisp_buf[5]={0};
//温度显示缓冲区
ucharzhuansu_buff[6]={0};
//转速显示缓存
ucharspeed_buff[6]={0};
//速度显示缓存
uchartemp_comp;
//存放温度整数部分
ucharDS18B20_OK,speed2;
//DS18B20_OK=0复位正常
uchart2=0,T,L,H,WENDU;
//t2代表timer2中断次数，T代表温度整数部分
//H：
温度高8位，L：
温度低8位
uinttime=0;
//超声波往返时间
longS=0,num1=0,speed;
//s表示超声波距离，num1表示发动机转速
//speed表示车轮转速=》速度
bitflag=0;
//超声波中断溢出标志位
uchardisbuff[4]={0};
//超声波数据显示缓存
ucharcodenum[]={"
0123456789:
.-℃"
};
ucharcodeline1_data[]={"
速度：
km/h"
ucharcodeline2_data[]={"
转速：
r/min"
ucharcodeline3_data[]={"
前方车距：
m"
ucharcodeline4_data[]={"
车内温度:
"
ucharcodeline5_data[]={"
#**欢迎使用**#"
ucharcodeline6_data[]={"
您的安全"
ucharcodeline7_data[]={"
是全家人"
ucharcodeline8_data[]={"
最大的幸福·
·
ucharcodepicture[]=
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//************************************************//
//**********DS18B20********//
//************蜂鸣器响一声函数*******//
voidbeep（）
BEEP=0;
//开蜂鸣器
delayms（500）;
//延时半秒
BEEP=1;
//关蜂鸣器
}
//************温度转换***************//
voidtempconv（）
ucharsign=0;
//定义符号标志位
uchartemp;
//定义温度数据暂存
if（H>
127）//大于127，即高4位全为1，即温度为负值
{
L=（~L）+1;
//取反加1，将补码变成原码
if（（~L）>
=0xff）//
H=（~L）+1;
//取反加一
elseH=~H;
//否则只取反
sign=1;
//置符号标志位为1
}
temp=L&
0x0f;
//取小数位
DQdisp_buf[0]=temp*0.625;
//所获得的是四位数，所测温度加大了10倍
DQdisp_buf[0]=DQdisp_buf[0]%1000%100%10;
//将小数部分转换成ASCII码
temp_comp=（（L&
0xf0）>
>
4|（H&
0x0f）<
<
4）;
//取温度整数部分
DQdisp_buf[3]=temp_comp/100;
//温度百位
temp=temp_comp%100;
//温度的十位和个位一起
DQdisp_buf[2]=temp/10;
//温度十位
DQdisp_buf[1]=temp%10;
//温度个位
if（DQdisp_buf[3]==0）//如果温度的百位为0
DQdisp_buf[3]=17;
//则不显示，
if（DQdisp_buf[2]==0）//在这种前提下，如果十位也为0的话，
DQdisp_buf[2]=17;
//不显示十位
if（sign）DQdisp_buf[3]=13;
//如果符号标志位为1，则显示负号
//************温度显示函数**************//
voidtemperture_display（）
LCD_set_xy（4,4）;
//从第四行第5列开始显示
LCD_Write_number（11）;
LCD_Write_number（DQdisp_buf[3]）;
//显示百位
LCD_Write_number（DQdisp_buf[2]）;
//显示十位
LCD_Write_number（DQdisp_buf[1]）;
//显示个位
LCD_Write_number（12）;
//小数点
LCD_Write_number（DQdisp_buf[0]）;
//十分位
LCD_set_xy（4,7）;
Write_char（1,num[14]）;
Write_char（1,num[15]）;
//************获取温度值*****************//
voidgettemperture（void）
uchari;
DS18B20_init（）;
//DS18B20初始化
if（DS18B20_OK==0）//如果正常
writeonebyte（0xcc）;
//跳过读序列号的操作
writeonebyte（0x44）;
//启动温度转换
for（i;
i<
100;
i++）//调用显示函数延时，等待A/D转换完成，分辨率为12位的需要延时750ms以上
temperture_display（）;
DS18B20_init（）;
//DS18B20初始化
writeonebyte（0xbe）;
//读取温度寄存器
temp_dat[0]=readonebyte（）;
//温度低8位放入temp_dat[0]
temp_dat[1]=readonebyte（）;
//温度高8位放入temp_dat[1]
L=temp_
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