I want to print out the values of 4 sensors in draw so I can read them real time.

 

The parses of data I get fromthe 4 sensors looks like this:

 

364,319,302,301
309,293,288,292
294,284,281,285
285,277,276,281
279,272,273,278
276,269,270,276
274,267,269,274
273,266,268,273

 

Here is the code I am using:

 

 

I get a NullPointException error on the Int[] split line and I am not sure why.

 
import processing.serial.*;
 
Serial myPort;    // The serial port
PFont Font;     // The display font
String inString;  // Input string from serial port
int nums;  // Input string from serial port
int lf = 10; // ASCII linefeed

 
void setup() {
  size(1024,768);
  Font = loadFont("digital.vlw");
  textFont(Font, 25);
  println(Serial.list());
  myPort = new Serial(this, Serial.list()[1], 9600);
  myPort.bufferUntil(lf);

}
 
void draw() {
  background(0);
  fill(255, 0, 0);
  text("Sensor STATUS: ", 350,50);
  fill(0, 191, 255);
  int[] nums = int(split(inString, ','));
  text("S 1: " + nums[0], 350,100);
  text("S 2: " + nums[1], 350,150);
  text("S 3: " + nums[2], 350,200);
  text("S 4: " + nums[3], 350,250);
  }
 
void serialEvent(Serial p) {
  inString = p.readString();
String myString = myPort.readStringUntil('\n');

}

 

Any help would be greatly appreciated.