#include <reg52.h>
sbit SCE  		= P1^0;
sbit ADCDATA    = P1^1;
sbit CLK		= P1^2;											
sbit CS	  		= P1^3;									
sbit RES  		= P1^4;								
sbit DC   		= P1^5;											 
sbit SDIN 		= P1^6;										
sbit SCLK 		= P1^7; 

unsigned char waveform[73];

char code picture[ ] =
{
0x00,0x00,0x00,0x00,0x2E,
0x2A,0x3A,0x00,0x88,0xF8,
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x88,0xFF,	 
0x00,0x00,0x00,0xC0,0x20,
0xC0,0x00,0x80,0x88,0xFF,		 
0x00,0x00,0x00,0x01,0x02,
0x01,0x00,0x00,0x88,0xFF,		 
0x00,0x00,0x00,0x00,0x00,
0x00,0x00,0x00,0x88,0xFF,		   
0x00,0x08,0x08,0x00,0x2E,
0x2A,0x3A,0x00,0x08,0x0F,			

};
char code graph1[]={
0x08,0x00,0x00,0x00,0x00,0x00,
0x04,0x00,0x00,0x00,0x00,0x00,
0x02,0x00,0x00,0x00,0x00,0x00,
0x01,0x00,0x00,0x00,0x00,0x00,
0x00,0x80,0x00,0x00,0x00,0x00,
0x00,0x40,0x00,0x00,0x00,0x00,
0x00,0x20,0x00,0x00,0x00,0x00,
0x00,0x10,0x00,0x00,0x00,0x00,
0x00,0x08,0x00,0x00,0x00,0x00,
0x00,0x04,0x00,0x00,0x00,0x00,
0x00,0x02,0x00,0x00,0x00,0x00,
0x00,0x01,0x00,0x00,0x00,0x00,
0x00,0x00,0x80,0x00,0x00,0x00,
0x00,0x00,0x40,0x00,0x00,0x00,
0x00,0x00,0x20,0x00,0x00,0x00,
0x00,0x00,0x10,0x00,0x00,0x00,
0x00,0x00,0x08,0x00,0x00,0x00,
0x00,0x00,0x04,0x00,0x00,0x00,
0x00,0x00,0x02,0x00,0x00,0x00,
0x00,0x00,0x01,0x00,0x00,0x00,
0x00,0x00,0x00,0x80,0x00,0x00,
0x00,0x00,0x00,0x40,0x00,0x00,
0x00,0x00,0x00,0x20,0x00,0x00,
0x00,0x00,0x00,0x10,0x00,0x00,
0x00,0x00,0x00,0x08,0x00,0x00,
0x00,0x00,0x00,0x04,0x00,0x00,
0x00,0x00,0x00,0x02,0x00,0x00,
0x00,0x00,0x00,0x01,0x00,0x00,
0x00,0x00,0x00,0x00,0x80,0x00,
0x00,0x00,0x00,0x00,0x40,0x00,
0x00,0x00,0x00,0x00,0x20,0x00,
0x00,0x00,0x00,0x00,0x10,0x00,
0x00,0x00,0x00,0x00,0x08,0x00,
0x00,0x00,0x00,0x00,0x04,0x00,
0x00,0x00,0x00,0x00,0x02,0x00,
0x00,0x00,0x00,0x00,0x01,0x00,
0x00,0x00,0x00,0x00,0x00,0x80,
0x00,0x00,0x00,0x00,0x00,0x40,
0x00,0x00,0x00,0x00,0x00,0x20,
0x00,0x00,0x00,0x00,0x00,0x10,
0x00,0x00,0x00,0x00,0x00,0x08,
};

write_data(char data1);						
write_command(char Command);					
delay();				   								
initial();												
clear_screen();										
write_picture();										
gotoxy(char x,char y); 					 									
putpoint(char a,char x);
int read_ADC(char n);
putgraph();
read_wave();
dot(char x,char y);
pg();
void main()
{   
  RES = 0;
  P1=0x3e;	
  initial();                								
  clear_screen();        		
  write_picture();
  while(1)
  {
   		read_wave();
		putgraph();
  }
 
}
int read_ADC(char n)
{				
	char i,channel;	  	
	int k;
	k=0;
	CS=0;
	if(n==0) channel=0x0d;
	else channel=0x0f;

	for(i=0;i<4;i++)
	{
		CLK = 0;
		if(channel&8) ADCDATA = 1;
		else ADCDATA = 0;
		CLK = 1;
		channel <<=1;
	}
		ADCDATA = 1;
		CLK = 0;

	for(i=0;i<12;i++)
	{
		k<<=1;
		CLK=1;
		CLK=0; 
		if(ADCDATA) k|=1;
		else k&=~1;
	}
		CS = 1;
	return k&0xfff;
}
read_wave()
{
           int d;
           unsigned char t;
           for(t=0;t<73;t++)
           {
                d = read_ADC(0);
               waveform[t] =d/103;
           }

}
putgraph()
{
 	char m;
	m=0;
	while(m<73)
	{
		putpoint(waveform[m],m+10);	
		m++;	
	}
}
putpoint(char a,char x)
{
	char b=5;
	int c;
	c=a*6;
	 while(b>=0)
	{
		gotoxy(x,b);
		write_data(graph1[c]);
		c++;
		b--;
	}	
}

write_picture()       
{     													
    char a,b,c,i;
	a=0;
	b=0;
	do
	{
		gotoxy(a,b);
		c=0;
		i=b*10;												
  		do 												 
  		{
			write_data(picture[i]);
			c++; 
			i++;									
		}while(c<10);
		a=0;
		b++;
	}while(b<=5);
}
write_data(char data1)
{
  char a;

  DC =1;
  for (a=0;a<8;a++)
  {
      if(data1&0x80)
      {
          SDIN=1;
      }
      else
      {
          SDIN=0;
      }
	  SCLK=1;
      SCLK=0;
      data1<<=1;
  }				
}
write_command(char command)
{
  char a;

  DC =0;
  for (a=0;a<8;a++)
  {
      if(command&0x80)
      {
          SDIN=1;
      }
      else
      {
          SDIN=0;
      }
	  SCLK=1;
      SCLK=0;
      command<<=1;
  }				
}
initial()      
{   
  RES = 0;			
  RES = 1;			

  write_command(0x21);       								
  write_command(0xbc);     									
  write_command(0x07);            								
  write_command(0x13);       									
  write_command(0x20);       									
  write_command(0x0c);         										
}
clear_screen()       
{  
  int  i=0;   		
    
  write_command(0x80);       							
  write_command(0x40);         									
  																	
  for(i=0;i<504;i++)   													  
  write_data(0);  												
}

gotoxy(char x,char y)  
{  
 write_command(0x80+x);  	 		
 write_command(0x40+y);  	
}