Arduino based oscilloscope working but not showing counting data

arkapravomandal · April 5, 2023, 7:59pm

This is the code for Arduino GLCD based oscilloscope, can anyone help me because every thing is working as expected but frequency is not showing also voltage.
here is the code

#include <U8glib.h>
U8GLIB_KS0108_128 u8g(2, 3, 4, 5, 6, 7, 8, 9, A3, A4, A5, A1, A2);
 int Input = A0;  
 int Key_add = 0; 
 int Key_sub = 1;
 int Key_hold = 10;
 int x,y; 
 int i,i1,i2,V_min,V_max,V_mid,t,t0,t1,sta,Key=1,hold=0; 
 long Freq;
 float Vpp;
 int Y[96];
 int Buffer[192]; 
 const uint8_t L[] PROGMEM = {

0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x7F, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFE, 0x00, 0x00, 
0x00, 0x0F, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0xE0, 0x00, 
0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x1C, 0x00, 
0x00, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x03, 0x00, 
0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x80, 
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x60, 
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x00, 0xFF, 0xFC, 0x00, 0x00, 0xC0, 0x01, 0x80, 0x60, 0x00, 0x00, 0x00, 0x08, 

0x10, 0x00, 0x00, 0x00, 0xFF, 0xFC, 0x00, 0x01, 0xC0, 0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x01, 0xE3, 0xDF, 0xB6, 0x6F, 0x8F, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0x8F, 0xFF, 0x00, 0x01, 0xE3, 0x1B, 0xB6, 0x6D, 0x9B, 0x80, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x03, 0x33, 0x31, 0xB6, 0x6C, 0xB1, 0x80, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x03, 0xF3, 0x31, 0xB6, 0x6C, 0xB1, 0x80, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x06, 0x33, 0x1B, 0xB6, 0x6C, 0x9B, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x06, 0x1B, 0x1F, 0xBE, 0x6C, 0x8F, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFE, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x03, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x0C, 0x00, 0x0F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x0C, 0x00, 0x0F, 0xFC, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x0C, 0x00, 0x3F, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x0E, 0x00, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x0F, 0x1E, 0x3C, 0xF8, 0xF0, 0x00, 0x00, 0x08, 

0x10, 0x0E, 0x01, 0xFF, 0xFF, 0x80, 0x00, 0x00, 0x0D, 0x93, 0x6E, 0xCD, 0x90, 0x00, 0x00, 0x08, 
0x10, 0x0F, 0x87, 0xFF, 0xF9, 0x80, 0x00, 0x00, 0x0F, 0x30, 0xC6, 0xCF, 0xF8, 0x00, 0x00, 0x08, 
0x10, 0x0F, 0x87, 0xFF, 0xF9, 0x80, 0x00, 0x00, 0x03, 0xB0, 0xC6, 0xCF, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x0F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x0D, 0x9B, 0x6C, 0xCD, 0xB0, 0x00, 0x00, 0x08, 
0x10, 0x0F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x07, 0x9E, 0x3C, 0xF9, 0xE0, 0x00, 0x00, 0x08, 
0x10, 0x0F, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x03, 0xFF, 0xFF, 0xF8, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x03, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0xFF, 0xFF, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x7F, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x3F, 0xFF, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x1F, 0xFF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x07, 0xCF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x07, 0xCF, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x07, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 

0x10, 0x00, 0x07, 0x83, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x06, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x07, 0x83, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x07, 0x83, 0xC0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x08, 
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x10, 
0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x20, 
0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 
0x01, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x80, 
0x00, 0x60, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x0E, 0x00, 
0x00, 0x1E, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x00, 
0x00, 0x01, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0xFF, 0x80, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 



}; 

 void setup( ) 
 { 
   pinMode(Key_add,INPUT); 
   digitalWrite(Key_add,HIGH); 
   pinMode(Key_sub,INPUT);
   digitalWrite(Key_sub,HIGH); 
   pinMode(Key_hold,INPUT);
   digitalWrite(Key_hold,HIGH); 
   ADMUX=0x60;  
   ADCSRA=0xe2; 
   analogReference(INTERNAL);  
    u8g.firstPage();  
   do {
    u8g.drawBitmapP( 0, 0, 16, 64, L); 
    } while( u8g.nextPage() );
   delay(2000); 
 } 
 
 void loop( ) 
 { 
   sample( );
   Measure( ); 
   Transform( );
   Key_scan( );
   draw();
   if(hold==0)
   {
    u8g.firstPage();  
   do {
       draw(); 
      }
      while( u8g.nextPage() ); 
   }
 } 
 
 void sample( )  
{  for(i = 0;i < 192;i++)
   {  
    Buffer[i] = ADCH;
    switch(Key)
     {
       case 1:
       break;
       case 2:
       delayMicroseconds(4);  
       break;
       case 3:
       delayMicroseconds(10);
       break;
       case 4:
       delayMicroseconds(23);
       break;
       case 5:
       delayMicroseconds(60);
       break;
       case 6:
       delayMicroseconds(123); 
       break;
       case 7:
       delayMicroseconds(248);
       break;
       case 8:
       delayMicroseconds(623);
       break;
       case 9:
       delayMicroseconds(1247);
       break;
       default:break;
     }
   }
}

void Measure()
{
  V_max=Buffer[0];
  V_min=Buffer[0];      
  for(i=0;i<192;i++)
  { 
    if(Buffer[i]>V_max) 
    V_max=Buffer[i];
    if(Buffer[i]<V_min) 
    V_min=Buffer[i];
  }
  V_mid=(V_max+V_min)/2;  
  Vpp=(V_max-V_min)*5/255;
  for(i=0;i<97;i++)
  {
    if(Buffer[i]<V_mid&&Buffer[i+1]>=V_mid)  
    {
      i1=i;
      break;
    }
  }
  for(i=i1+1;i<98+i1;i++)
  {
    if(Buffer[i]<V_mid&&Buffer[i+1]>=V_mid)  
    {
      i2=i;
      break;
    }
  }
  t=i2-i1;
  if(t>0)
  Freq=8000/t;
  else
  Freq=0;
}

 void Transform( )  
{ 
  for(sta=0;sta<96;sta++)
  {
    if(Buffer[sta]<128&&Buffer[sta+2]>128)  
    break;
  } 
  for(i = 0;i < 96;i++)  
  Y[i] =  63-(Buffer[i+sta]>>2);     
}

void draw()  
{  
for(x = 0;x < 95;x++)  
  u8g.drawLine(x,Y[x],x,Y[x+1]);
 

u8g.drawFrame(0,0,97,64);

 u8g.drawLine(48,0,48,63); 
 u8g.drawLine(0,32,96,32);
 for(x=0;x<96;x+=8)
   u8g.drawLine(x,31,x,33);
 for(y=0;y<64;y+=8)
   u8g.drawLine(47,y,49,y);

for(x=8;x<96;x+=8)
 {
    for(y=8;y<64;y+=8)
    u8g.drawPixel(x,y);
 }

 u8g.drawStr(98,7,"MS/div");
 u8g.drawStr(98,23,"V/div");
 u8g.drawStr(98,30,"0.324");
 u8g.drawStr(98,40,"Vpp");
 u8g.setPrintPos( 98, 47);
 u8g.print(Vpp);
 u8g.drawStr(118,47,"V");
 u8g.drawStr(98,55,"F(HZ)");
 switch(Key)
 {
      case  1:
      u8g.drawStr(98,14,"0.02");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq*50);
      break;
      case  2:
      u8g.drawStr(98,14,"0.05");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq*20);
      break;
      case  3:
      u8g.drawStr(98,14," 0.1");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq*10);
      break;
      case  4:
      u8g.drawStr(98,14," 0.2");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq*5);
      break;
      case  5:
      u8g.drawStr(98,14," 0.5");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq*2);
      break;
     case  6:
      u8g.drawStr(98,14,"  1");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq);
      break;
     case  7:
      u8g.drawStr(98,14,"  2");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq/2);
      break;
     case  8:
      u8g.drawStr(98,14,"  5");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq/5);
      break;
      case  9:
      u8g.drawStr(98,14," 10");
      u8g.setPrintPos( 98, 62);
      u8g.print(Freq/10);
      break;
    default:break;
   }
}


void Key_scan()
{
    if(digitalRead(Key_add)==LOW) 
  {
    while(digitalRead(Key_add)==LOW);
    Key++;
    if(Key==10)
    Key=9;
    delay(10);
  }
  if(digitalRead(Key_sub)==LOW) 
  {
    while(digitalRead(Key_sub)==LOW);
    Key--;
    if(Key==0)
    Key=1;
    delay(10);
        }
        if(digitalRead(Key_hold)==LOW) 
  {
    while(digitalRead(Key_hold)==LOW);
          hold=~hold;
    delay(10);
        }
}

please help me what to do..

arkapravomandal · April 5, 2023, 8:02pm

can any one help me how to highlight this portion of the code.

u8g.drawStr(98,7,"MS/div");
 u8g.drawStr(98,23,"V/div");
 u8g.drawStr(98,30,"0.324");
 u8g.drawStr(98,40,"Vpp");
 u8g.setPrintPos( 98, 47);
 u8g.print(Vpp);
 u8g.drawStr(118,47,"V");
 u8g.drawStr(98,55,"F(HZ)");

DrDiettrich · April 5, 2023, 8:37pm

Please explain.

arkapravomandal · April 5, 2023, 8:51pm

This is what I desired , this is the picture.

And this is what happening

only this portion is showing. remain of screen is blank.
can you help??

DrDiettrich · April 5, 2023, 9:40pm

Perhaps you are clearing it by accident, somewhere else?
To debug: add a reasonable delay after the code showing the missing parts, to find out whether this code is wrong or some other.

arkapravomandal · April 5, 2023, 9:49pm

where I will add a reasonable delay ?.... after void draw () or before void draw() can show me the demo..

DrDiettrich · April 5, 2023, 10:06pm

Add draw() after outputting the missing data, followed by the delay.

arkapravomandal · April 5, 2023, 10:15pm

I beg your pardon, can you please explain it briefly.. I didn't get it clearly what you said. You mean my data is missing some where??

arkapravomandal · April 10, 2023, 8:53pm

can any one help?? please....

arkapravomandal · April 10, 2023, 8:57pm

I'm stuck here

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