/*
/* receive 2 sensors values via SoftwareSerial
 
 * based on Y. Tsuchiya, Fab Academy 2019 week16 "Interface and application programming" 
 * http://fabacademy.org/2019/labs/kamakura/students/tsuchiya-yosuke/assignments/week16/
 * ( port number etc. modified.  )
 */


import processing.serial.*;

Serial port;

boolean DEBUG = false;
int[][] values = new int[2][100];
color[] colors = {color(0, 255, 255), color(255, 255, 0), color(255, 0, 255)};


void setup() {

  size(800, 600);
  frameRate(50);
  String[] ports = Serial.list();

  if (DEBUG) {
    for (int i = 0; i < ports.length; i++) {
      println(i + ": " + ports[i]);
    }
  } else {

    println("Available serial ports:");

    // if using Processing 2.1 or later, use Serial.printArray()
    printArray(Serial.list());

    port = new Serial(this, ports[5], 9600);
  }
}

void draw() {

  background(color(30, 30, 30));
  stroke(255, 255, 255);
  textSize(16);
  text("Input Device Value", 10, 20);

  for (int i=0; i<2; i++) {
    stroke(colors[i]);
    for (int j=0; j<99; j++) {
      float a = map(values[i][j], 0, 1023, 0, 512);
      float b = map(values[i][j + 1], 0, 1023, 0, 512);

      line(8 * j, 512-a, 8* (j + 1), 512-b);
    }
  }
}

void serialEvent(Serial p) {

  if (p.available() > 0) {
    try {
      String input = p.readStringUntil('\n');
      if (input != null) {
        input = trim(input);
        String [] value = split(input, ',');
        println(value[0] +","+ value[1] );
        for (int i = 0; i < 2; i++) {
          values[i] = append(subset(values[i], 1), int(value[i]));
        }
      }
    } 
    catch (RuntimeException e) {
    }
  }
}