97高清免费观看视频,最新电影免费高清在线观看,国产精品第19页在线亚洲

#include <REGX52.H>
#include "LCD1602.h" //LCD1602頭文件
#include "Delay.h" //延時
#include "Timer0.h" //定時0頭文件
#include "Timer1.h" //定時1頭文件
//定義各種參數(shù)
unsigned short Distance;
unsigned char i;
unsigned long DisH,DisL;
unsigned int T0Count;
unsigned char Time;
unsigned int a,b;
sbit Trig = P3^6; //定義兩個超聲波管腳
sbit Echo = P3^7;
sbit set = P3^0; //切換模式
sbit up = P3^1; //加
sbit down = P3^2; //減
sbit yled = P2^1;
sbit gled = P2^2;
sbit rled = P2^3;
sbit beep = P3^5;
unsigned char Flag;//測量標志位0.5秒觸發(fā)一次
unsigned char nodis;//超出量程
unsigned int mode;
unsigned int change;
unsigned int waring;
unsigned int upper = 120;//上限
unsigned int lower = 50;//下限
//超聲波初始化
void Super_Wave_Init()
{
Trig = 0;
Echo = 0;
}
//
/**************************************************
距離測量
**************************************************/
void Measure(void)
{
unsigned char Err; //錯誤標記
unsigned long distance,pTime;//距離,時間變量
Err=0;
Trig=1; //TR保持10us高電平觸發(fā)模塊測距
Delay10Us();
Trig=0;
TH0=0;
TL0=0;
while(Echo==0);//等待ECHO變?yōu)楦?br />
TR0=1; //啟動定時器，外部高電平觸發(fā)
while(Echo==1)//等待超聲波回應(yīng)獲超時
{
pTime=TH0*256+TL0;
if(pTime>40000)//時間超時
{
Err=1;
break;
}
}
TR0=0;//關(guān)閉定時器
pTime=TH0*256+TL0; //獲取時間
if(Err==0)
{
distance=(pTime*173)/1000;//；pTime*346/1000000/2=pTime*0.0173 仿真的環(huán)境溫度為25度346m/s
DisH = distance/10;
DisL = distance%10;
if((DisH>170)||(DisH<2))//量程170cm，超過量程顯示0;測量距離小?cm,HCSR04最小測算2cm
{
Err=1;
}
else if(DisH>upper)
{
gled = 0;
yled = 1;
rled = 1;
beep = 1;
}
else if((DisH>=lower)&&(DisH<=upper))
{
gled = 1;
yled = 0;
rled = 1;
if(waring == 0)
{
beep = 1;
}
else
{
beep = 0;
}
}
else if(DisH<lower)
{
gled = 1;
yled = 1;
rled = 0;
beep = 0;
if(waring == 0)
{
LCD_ShowString(2,1,"warning");
}
else
{
LCD_ShowString(2,1," ");
}
}
}
if(Err == 1)
{
nodis = 1;
gled = 1;
yled = 1;
rled = 1;
beep = 1;
}
}
void outkey()
{
if(set == 0)
{
//Delay(8);
mode++;
change = 1;
if(mode>2)
{
mode = 0;
}
while(set == 0);
}
switch(mode)
{
case 0://正常讀數(shù)模式
if(change == 1)
{
change = 0;
LCD_ShowString(1,1,"distance:");
LCD_ShowString(1,15,"cm");
LCD_ShowString(1,13,".");
LCD_ShowString(2,1," ");
}
if(Flag)//每500ms測量一次
{
Flag=0;
Measure();//測量
if(nodis == 0)
{
LCD_ShowNum(1,10,DisH,3);
LCD_ShowNum(1,14,DisL,1);
}
else
{
nodis = 0;
LCD_ShowString(1,10,"-");
LCD_ShowString(1,11,"-");
LCD_ShowString(1,12,"-");
LCD_ShowString(1,14,"-");
}
}
break;
case 1://改下限
if(change == 1)
{
change = 0;
LCD_ShowString(2,1,"upper:");
LCD_ShowNum(2,7,upper,3);
LCD_ShowString(2,10," ");
LCD_ShowString(1,1,"lower:");
LCD_ShowNum(1,7,lower,3);
LCD_ShowString(1,10," ");
}
if(up == 0)
{
lower++;
LCD_ShowNum(1,7,lower,3);
while(up == 0);
}
if(down == 0)
{
lower--;
LCD_ShowNum(1,7,lower,3);
while(down == 0);
}
break;
case 2://改上限
if(change == 1)
{
change = 0;
LCD_ShowString(2,1,"upper:");
LCD_ShowNum(2,7,upper,3);
LCD_ShowString(2,10," ");
LCD_ShowString(1,1,"lower:");
LCD_ShowNum(1,7,lower,3);
LCD_ShowString(1,10," ");
}
if(up == 0)
{
upper++;
LCD_ShowNum(2,7,upper,3);
while(up == 0);
}
if(down == 0)
{
upper--;
LCD_ShowNum(2,7,upper,3);
while(down == 0);
}
break;
default:break;
}
}
//主函數(shù)
void main()
{
LCD_Init();
Timer0Init(); //該定時器沒有寫TR0.
Timer1Init();
LCD_ShowString(1,1,"distance:");
LCD_ShowString(1,15,"cm");
LCD_ShowString(1,13,".");
while(1)
{
outkey();
}
}
/**************************************************
定時器1中斷服務(wù)
**************************************************/
void Time1_Isr() interrupt 3
{
static unsigned char value; //定時2ms中斷一次
TH1 = (65536-2000)/256;
TL1 = (65536-2000)%256; //2ms
// smgDis(); //數(shù)碼管顯示函數(shù)
value++;
if(value >= 250)//250次2ms中斷總時間位500ms
{
value = 0;
Flag = 1;
waring ++;
}
if(waring>1)
{
waring = 0;
}
}

復制代碼

欧美极品高清xxxxhd,国产日产欧美最新,无码AV国产东京热AV无码,国产精品人与动性XXX,国产传媒亚洲综合一区二区,四库影院永久国产精品,毛片免费免费高清视频,福利所导航夜趣136