Hi everyone!  I have a major problem!  I am trying to use an if statement to do something when the serial data (in the form of a string) equals "received".  But whatever I do, the if statement wont respond to ANY change in the serial data.  I can send things to the arduino just fine, but receiving is the big problem.  Also any programming tips are helpful, I'm a noob.  Thanks to anyone who tries to help me! I don't care if you solve the problem or not, just that you try to help means a lot to me :D 

 

 

Arduino code:

 

int DataIn = 0;  // data coming from computer
int ComStat = 0;
void setup() {
  Serial.begin(19200);  // I picked 19200bps (not the problem, I tried 9600)
}
void loop() {
 
  if (Serial.read() == 73) {
    ComStat = 1;  
  }
  if (Serial.read() == 48) {
    ComStat = 0;
  }
while (ComStat == 1) {  // The computer won't pick it up at all without it constantly sending data
  Serial.println("received");  // send "received" to the computer
  delay(100);
}
}

 

(I know I'm not very efficient, I need all the help I can get!)

 

Now here is probably the worst written code in the history of processing!

 

Processing code:

 

import processing.serial.*;

Serial Arduino;  // named the port "Arduino"
String ConStat = "Connect";
String DataIn; // global variable for data coming from arduino
String GoodIn; // global variable for processed data (arduino data processed)
void setup() {
  Arduino = new Serial(this, "COM3", 19200);  // set up port on COM3
  Arduino.bufferUntil(10);
  size(1000, 600);
  background(225);
}

void draw() {

  fill(130);
  rect(50, 40, 80, 40, 7);
  fill(255);
  textSize(16);
  text(ConStat, 59, 67);
  println(GoodIn);  // this is not necessary, just for debugging (doesn't help much) 

  if (mousePressed == true && mouseX >= 50 && mouseX <= 130 && mouseY >= 40 && mouseY <= 80) {
    fill(50);
    rect(50, 40, 80, 40, 7);
    Arduino.write(73);    //Send capital letter I to arduino.
    ConStat = "Found";  // indicates that there is something connected to COM3
    if (GoodIn == "received") {  // PROBLEM HERE!!! Even though the monitor says that it is = "received", it never changes the outcome of this conditional!
      ConStat = "Active";
      println("Active");
    }
  }
}

void serialEvent(Serial Arduino) {      // this is where the data processing occurs

  DataIn = Arduino.readStringUntil('\n');  
  if (DataIn != null) {
    DataIn=trim(DataIn);
    GoodIn = DataIn;
  }
}

 

 

 

 PLEASE REPLY IF YOU SEE ANYTHING WRONG WITH THIS!!!