ultrasonic.c

LCD液晶驱动程序代码

#include<P89V51.H>
//#include<reg51.H>
#include<LCD.C>
sbit P1_6 =P1^6;
sbit P1_7 =P1^7;
sbit P3_3 =P3^3;
unsigned char a,b;
unsigned int c;
void DisplayInt(Uchar X,Uchar Y,Uint f);
void DisplayOneChar(unsigned char X, unsigned char Y, unsigned char DData);

void Delay(unsigned char c,unsigned char d,unsigned char e)
{
 unsigned char i,j,k;
 for(i=0;i<=c;i++)
 {
   for(j=0;j<=d;j++)
    for(k=0;k<=e;k++);
 }
}

void RigourTimer(unsigned char m)
    {	
    	unsigned char i;
		
    	for(i=0;i<m;i++)
    	{	
		    TMOD=0x00;
    		TH0=0xff30/256;
    		TL0=0xff30%256;
			TR0=1;
			EX1=1;

    		do{}
			while(!TF0);
    		TF0=0;
    	}
    	TR0=0;
		EX1=0;
    }


/*void counter(void) interrupt 2 	using 3 //测出往返时间
	{

		EX1=0;
		P1_7=!P1_7;
		
		EA=1;
		TR1=0;	   
		a=TL1;
		b=TH1;
		//EX1=1;

	}*/


////////////////////////////////////////////////////////////

void timer1(void) interrupt 3 using 2
	{
		
	  TR1=0;	

	}

/////////////////////////////////////////////////////////////

main()
{	   



	    PSB=1;
        RST=0;
	    Delay(10,1,1);
	    RST=1;
        Delay(1,10,1);
        Delay(10,1,1);
        LCMInit();
        Delay(10,1,1);
	    EA=1;
		EX1=0;
		//TR0=1;
		//IE1=1;
	while(1)
	{

	    //P3_3=0;
		//ET0=1;
		IE1=0;
		EX1=0;
		EA=1;
	    P1_6=1;
		RigourTimer(2);
		P1_6=0;
		RigourTimer(40);
		//P1_7=1;
		//ET1=1;
	    TMOD=0x10;
	    TH1=0;
		TL1=0;
		//ET1=1;
		TR1=1; 
		//IE1=1;
	    PX1=1;
	    EA=1;
		IT1=0;
		//EX1=1;
		//IE1=1;
		//Delay(20,10,5);
		while(P3_3==0) 
	{
		TR1=0;
		a=TL1;
		b=TH1;
		c=((unsigned int)b<<8)+a;

		DisplayInt(0,0,c);
		
	    Delay(20,10,50);
		WriteCommandLCM(0x02,1);
	}

	    //DisplayOneChar(0,0,0x41);
		//DisplayOneChar(1,0,0x42);
		Delay(1,10,50);
		
	
	
	}


}