Need help for Simple Arduinoscope coding

Using Arduino Project Guidance
#1

Can anyone teach me how to change to scale for the following Simple Arduino Scope coding ? It is found in the example.

import arduinoscope.*;
import processing.serial.*;

// this example requires controlP5
// http://www.sojamo.de/libraries/controlP5/
import controlP5.*;


// how many scopes, you decide.
Oscilloscope[] scopes = new Oscilloscope[1];
Serial port;
ControlP5 controlP5;

PFont fontLarge;
PFont fontSmall;

int LINE_FEED=10; 

int[] vals;

void setup() {
  size(800, 800, P2D);
  background(0);
  
  controlP5 = new ControlP5(this);
  
  // set these up under tools/create font, if they are not setup.
  fontLarge = loadFont("TrebuchetMS-20.vlw");
  fontSmall = loadFont("Uni0554-8.vlw");
  
  int[] dimv = new int[2];
  dimv[0] = width-130; // 130 margin for text
  dimv[1] = height/scopes.length;
  
  // setup vals from serial
  vals = new int[scopes.length];
  
  for (int i=0;i<scopes.length;i++){
    int[] posv = new int[2];
    posv[0]=0;
    posv[1]=dimv[1]*i;

    // random color, that will look nice and be visible
    scopes[i] = new Oscilloscope(this, posv, dimv);
    scopes[i].setLine_color(color((int)random(255), (int)random(127)+127, 255));
    
    
    controlP5.addButton("pause",1,dimv[0]+10,posv[1]+10,32,20).setId(i);
    controlP5.addButton("logic",1,dimv[0]+52,posv[1]+10,29,20).setId(i+50);
    controlP5.addButton("save",1,dimv[0]+92,posv[1]+10,29,20).setId(i+100);
  }
  
  port = new Serial(this, Serial.list()[0], 115200);
  
  // clear and wait for linefeed
  port.clear();
  port.bufferUntil(LINE_FEED);
}

void draw()
{
  background(0);
  
  // int[] vals = getTestValuesSquare();
  // int[] vals = getTestValuesSin();
  
  for (int i=0;i<scopes.length;i++){
    // update and draw scopes
    
    scopes[i].addData(vals[i]);
    scopes[i].draw();
    
    // conversion multiplier for voltage
    float multiplier = scopes[i].getMultiplier()/scopes[i].getResolution();
    
    // convert arduino vals to voltage
    float minval = scopes[i].getMinval() * multiplier;
    float maxval = scopes[i].getMaxval() * multiplier;
    int[] values = scopes[i].getValues(); 
    float pinval =  values[values.length-1] * multiplier;
    
    // add lines
    scopes[i].drawBounds();
    stroke(255);
    
    int[] pos = scopes[i].getPos();
    int[] dim = scopes[i].getDim();
    
    line(0, pos[1], width, pos[1]);
    
    // add labels
    fill(255);
    textFont(fontLarge);
    text(pinval, width-60, pos[1] + dim[1] - 10);
    
    textFont(fontSmall);
    text("min: " + minval, dim[0] + 10, pos[1] + 40);
    text("max: " + maxval, dim[0] + 10, pos[1] + 48);
    
    fill(scopes[i].getLine_color());
    text("pin: " + i, dim[0] + 10,pos[1] + dim[1] - 10);
  }
  
  // draw text seperator, based on first scope
  int[] dim = scopes[0].getDim();
  stroke(255);
  line(dim[0], 0, dim[0], height);
  
  // update buttons
  controlP5.draw();
  
}

// handles button clicks
void controlEvent(ControlEvent theEvent) {
  int id = theEvent.controller().id();
  
  // button families are in chunks of 50 to avoid collisions
  if (id < 50){
    scopes[id].setPause(!scopes[id].isPause());
  }else if (id < 100){
    scopes[id-50].setLogicMode(!scopes[id-50].isLogicMode());
  }else if(id < 150){
    String fname = "data"+(id-100)+".csv";
    scopes[id-100].saveData(fname);
    println("Saved as "+fname);
  }
}

// handle serial data
void serialEvent(Serial p) { 
  String data = p.readStringUntil(LINE_FEED);
  if (data != null) {
    // println(data);
    vals = int(split(data, ' '));
  }
}


// for test data, you can comment, if not using
int d=0;
ControlTimer ct = new ControlTimer();


int[] getTestValuesSin(){
  int[] vals = new int[scopes.length];
  
  // this is test data
  if (d==45){
    d=0;
  }
  
  int sval = (int) abs(sin(d*2)*1023.0f);
  for (int i=0;i<scopes.length;i++){
    vals[i]=sval;
  }
  
  d++;
  
  return vals;
}

int oldtime;
int time;
boolean up=false;

int[] getTestValuesSquare(){
  int[] vals = new int[scopes.length];
  
  ct.setSpeedOfTime(25);
  oldtime=time;
  time = ct.second();  
  
  if (oldtime==time){
    up = !up;
  }
  
  for (int i=0;i<scopes.length;i++){
    if (up){
      vals[i]=1023;
    }else{
       vals[i]=0;
    }
  }
  
  return vals;
}
#2

Please go back and edit your post so the code is in code tags. The instructions are in the HowToUseTheForum sticky. When you do it right it will look like this

That’s a long piece of code. Can you save me some time by saying where the scaling is done?

…R

#3 
[code]import arduinoscope.*;
import processing.serial.*;

// this example requires controlP5
// http://www.sojamo.de/libraries/controlP5/
import controlP5.*;


// how many scopes, you decide.
Oscilloscope[] scopes = new Oscilloscope[1];
Serial port;
ControlP5 controlP5;

PFont fontLarge;
PFont fontSmall;

int LINE_FEED=10; 

int[] vals;

void setup() {
  size(800, 800, P2D);
  background(0);
  
  controlP5 = new ControlP5(this);
  
  // set these up under tools/create font, if they are not setup.
  fontLarge = loadFont("TrebuchetMS-20.vlw");
  fontSmall = loadFont("Uni0554-8.vlw");
  
  int[] dimv = new int[2];
  dimv[0] = width-130; // 130 margin for text
  dimv[1] = height/scopes.length;
  
  // setup vals from serial
  vals = new int[scopes.length];
  
  for (int i=0;i<scopes.length;i++){
    int[] posv = new int[2];
    posv[0]=0;
    posv[1]=dimv[1]*i;

    // random color, that will look nice and be visible
    scopes = new Oscilloscope(this, posv, dimv);
    scopes.setLine_color(color((int)random(255), (int)random(127)+127, 255));
    
    
    controlP5.addButton("pause",1,dimv[0]+10,posv[1]+10,32,20).setId(i);
    controlP5.addButton("logic",1,dimv[0]+52,posv[1]+10,29,20).setId(i+50);
    controlP5.addButton("save",1,dimv[0]+92,posv[1]+10,29,20).setId(i+100);
  }
  
  port = new Serial(this, Serial.list()[0], 115200);
  
  // clear and wait for linefeed
  port.clear();
  port.bufferUntil(LINE_FEED);
}

void draw()
{
  background(0);
  
  // int[] vals = getTestValuesSquare();
  // int[] vals = getTestValuesSin();
  
  for (int i=0;i<scopes.length;i++){
    // update and draw scopes
    
    scopes.addData(vals);
    scopes.draw();
    
    // conversion multiplier for voltage
    float multiplier = scopes.getMultiplier()/scopes.getResolution();
    
    // convert arduino vals to voltage
    float minval = scopes.getMinval() * multiplier;
    float maxval = scopes.getMaxval() * multiplier;
    int[] values = scopes.getValues(); 
    float pinval =  values[values.length-1] * multiplier;
    
    // add lines
    scopes.drawBounds();
    stroke(255);
    
    int[] pos = scopes.getPos();
    int[] dim = scopes.getDim();
    
    line(0, pos[1], width, pos[1]);
    
    // add labels
    fill(255);
    textFont(fontLarge);
    text(pinval, width-60, pos[1] + dim[1] - 10);
    
    textFont(fontSmall);
    text("min: " + minval, dim[0] + 10, pos[1] + 40);
    text("max: " + maxval, dim[0] + 10, pos[1] + 48);
    
    fill(scopes.getLine_color());
    text("pin: " + i, dim[0] + 10,pos[1] + dim[1] - 10);
  }
  
  // draw text seperator, based on first scope
  int[] dim = scopes[0].getDim();
  stroke(255);
  line(dim[0], 0, dim[0], height);
  
  // update buttons
  controlP5.draw();
  
}

// handles button clicks
void controlEvent(ControlEvent theEvent) {
  int id = theEvent.controller().id();
  
  // button families are in chunks of 50 to avoid collisions
  if (id < 50){
    scopes[id].setPause(!scopes[id].isPause());
  }else if (id < 100){
    scopes[id-50].setLogicMode(!scopes[id-50].isLogicMode());
  }else if(id < 150){
    String fname = "data"+(id-100)+".csv";
    scopes[id-100].saveData(fname);
    println("Saved as "+fname);
  }
}

// handle serial data
void serialEvent(Serial p) { 
  String data = p.readStringUntil(LINE_FEED);
  if (data != null) {
    // println(data);
    vals = int(split(data, ' '));
  }
}


// for test data, you can comment, if not using
int d=0;
ControlTimer ct = new ControlTimer();


int[] getTestValuesSin(){
  int[] vals = new int[scopes.length];
  
  // this is test data
  if (d==45){
    d=0;
  }
  
  int sval = (int) abs(sin(d*2)*1023.0f);
  for (int i=0;i<scopes.length;i++){
    vals=sval;
  }
  
  d++;
  
  return vals;
}

int oldtime;
int time;
boolean up=false;

int[] getTestValuesSquare(){
  int[] vals = new int[scopes.length];
  
  ct.setSpeedOfTime(25);
  oldtime=time;
  time = ct.second();  
  
  if (oldtime==time){
    up = !up;
  }
  
  for (int i=0;i<scopes.length;i++){
    if (up){
      vals=1023;
    }else{
       vals=0;
    }
  }
  
  return vals;
}

[/code]

I’m not quite sure on where is the place to change the scale…kindly need help

#4

yeosteven:
I'm not quite sure on where is the place to change the scale..kindly need help

What you have now is probably as much as the 'arduinoscope' library provides.

#5

Ya I know, but I want to know how to change the scale. Thanks

#6

yeosteven:
Can anyone teach me how to change to scale for the following Simple Arduino Scope coding ?

I'm not sure what you mean by scale, but perhaps you mean the relationship between voltage and screen position. That scaling seems to be performed by this code:

        float multiplier = scopes.getMultiplier()/scopes.getResolution();

That suggests that the scope already encompasses the concept of scaling and presumably there's some way for the scale to be set either manually or automatically. It would be possible to simply replace the code above with whatever scaling algorithm you wanted to use, but IMO it would be better for you to understand how the scaling is intended to work before trying to change it. To do that you would need to look at the documentation and code for the Arduinoscope project, wherever that is.

#7

can u show me some sample of code?/

#8

yeosteven:
can u show me some sample of code?/

I've already pointed you at the exact line of code where I think the scaling is defined on the display side. If you want to know how the Arduinoscope determines what scaling to use, you would need to look into the Arduinoscope source and find how the results of getMultiplier() and getResolution() are determined.

#9