Using two different readStringUntil "characters"

Processing Electronics (Arduino, etc.)
9

Alright, so far I have been having issues with this

On processing I have:


import processing.serial.*;
float[] val = {};
Serial port;

int len = 1200; // set length
int wid = 700;  // set width
float x, y;
float px = 600;
float py = 350;

void setup() {
  size(1200,700);
  port = new Serial (this, "COM12", 115200);
  port.bufferUntil('\n');
}

void serialEvent(final Serial port) {
  val = float(splitTokens(port.readString()));
  redraw = true;
}
void draw(){
  gyroline();
}

void gyroline() {
  //...
  x = val[0];
  y = val[1];
  line(px, py, x + px, y + py);
  px = x;
  py = y;
  
  print(x); println(y); // for debugging
}

However this gives me “ArrayIndexOutOfBoundsException 0”

And for reference’s sake, here’s my Arduino (but only the loop() part):

//...
void loop() {
  mpu.getMotion6(&rawaccx, &rawaccy, &rawaccz, &rawgyrx, &rawgyry, &rawgyrz);
  getaccel(rawaccx, rawaccy, rawaccz);

  Serial.print(realaccx); Serial.write("\t"); // TSV
  Serial.print(realaccy); Serial.write("\t"); // TSV
  Serial.println('\n'); // NEWLINE
  delay(10);
}

Please reply soon :frowning_face: Thank you
EDIT: I’ve been trying to work on a solution while reading the links you sent and I have this. Now i am getting NullPointerException



import processing.serial.*;
String index;
float[] val;
Serial port;

int len = 1200; // set length
int wid = 700;  // set width
float x, y;
float px = 600;
float py = 350;

void setup() {
  noLoop();
  final String[] port = Serial.list();
  // port = new Serial (this, "COM12", 115200);
  new Serial(this, "COM12", 115200).bufferUntil('\n');
  // port.bufferUntil('\n');
}

void serialEvent(final Serial port) {
  val = float(splitTokens(port.readString()));
  redraw = true;
}
void draw() {
  while (port.available() > 0) {
    String input = port.readString();
    val = float(splitTokens(input));
    gyroline();
  }
}

void gyroline() {
  //...
  x = val[0];
  y = val[1];
  line(px, py, x + px, y + py);
  px = x;
  py = y;

  print(x); 
  println(y);
}