Hi,

I am trying to send data from Wiring to Processing. I find out that in some way the values send from Wiring are different if I send them with a delay. When I use a delay in Wiring, it seems Processing gets the correct ASCII-number (number 49, which is "1") from the serial connection. When I don't delay after one loop, I only get the number 138 in Processing.

I would appreciate if someone can take a look at my simple code below:

WIRING:

int LEDPin = 48;
long blinkTimer = 0;
int blinkInterval = 1000;
int status = 1;

void setup() {
 pinMode(LEDPin, OUTPUT);
 Serial.begin(9600);
}

void loop() {
 Serial.print(status);
 
 if (millis() - blinkTimer >= blinkInterval / 2) {
   digitalWrite(LEDPin, HIGH);
 }
 
 if (millis() - blinkTimer >= blinkInterval) {
   digitalWrite(LEDPin, LOW);
   blinkTimer = millis();
 }
 
 delay(250); // if no delay is added, the program doesn't give right data
}

PROCESSING:

import processing.serial.*;
Serial port;
int statusVal = 0;

void setup()
{
 background(#222222);
 fill(255);
 size(200, 200);
 noStroke();
 frameRate(10);  
 PFont font;
 font = loadFont("ArialMT-10.vlw");
 textFont(font);
 println(Serial.list());
 port = new Serial(this, Serial.list()[1], 9600);
}

void draw() {  
 showStatus();
}

void showStatus() {
 background(#222222);
 if (port.available() > 0) {
   statusVal = port.read();
   println(statusVal);
   text(statusVal, 8, 16);
 }
}

Has anyone an idea what causes the different values?

Thank you in advance.

Jeroen