Hello, I am working with an arduino uno R3 here and I am pretty stumped by processing. I am running a simple push button circuit. The code was taken directly from the arduino website.
http://arduino.cc/en/Tutorial/ButtonStateChange I want to print the serial data as it comes through the port but it is constantly pulling what I think are the ascii values and there is no response when I press the button.
Here is my arduino code
- const int buttonPin = 2; // the pin that the pushbutton is attached to
const int ledPin = 13; // the pin that the LED is attached to - // Variables will change:
int buttonPushCounter = 0; // counter for the number of button presses
int buttonState = 0; // current state of the button
int lastButtonState = 0; // previous state of the button - void setup() {
// initialize the button pin as a input:
pinMode(buttonPin, INPUT);
// initialize the LED as an output:
pinMode(ledPin, OUTPUT);
// initialize serial communication:
Serial.begin(9600);
}
void loop() {
// read the pushbutton input pin:
buttonState = digitalRead(buttonPin);- // compare the buttonState to its previous state
if (buttonState != lastButtonState) {
// if the state has changed, increment the counter
if (buttonState == HIGH) {
// if the current state is HIGH then the button
// wend from off to on:
buttonPushCounter++;
Serial.println("on");
Serial.print("number of button pushes: ");
Serial.println(buttonPushCounter);
}
else {
// if the current state is LOW then the button
// wend from on to off:
Serial.println("off");
}
}
// save the current state as the last state,
//for next time through the loop
lastButtonState = buttonState;
} and here is my processing code
- import processing.serial.*;
Serial port;
float value;
void setup() {
size(256, 150); - port = new Serial(this, "COM3", 9600);
}
void draw()
{
println(port.read()); -
}
Any help fixing this would be great. Really I just want the computer to tell me whether the system is on or off.
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