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65 lines
1.8 KiB
Plaintext
65 lines
1.8 KiB
Plaintext
/**
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* Simple Read
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*
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* Read data from the serial port and change the color of a rectangle
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* when a switch connected to a Wiring or Arduino board is pressed and released.
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* This example works with the Wiring / Arduino program that follows below.
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*/
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import processing.serial.*;
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Serial myPort; // Create object from Serial class
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int val; // Data received from the serial port
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void setup()
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{
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size(200, 200);
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// I know that the first port in the serial list on my mac
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// is always my FTDI adaptor, so I open Serial.list()[0].
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// On Windows machines, this generally opens COM1.
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// Open whatever port is the one you're using.
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String portName = Serial.list()[0];
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myPort = new Serial(this, portName, 9600);
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}
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void draw()
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{
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if ( myPort.available() > 0) { // If data is available,
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val = myPort.read(); // read it and store it in val
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}
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background(255); // Set background to white
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if (val == 0) { // If the serial value is 0,
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fill(0); // set fill to black
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}
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else { // If the serial value is not 0,
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fill(204); // set fill to light gray
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}
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rect(50, 50, 100, 100);
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}
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/*
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// Wiring / Arduino Code
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// Code for sensing a switch status and writing the value to the serial port.
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int switchPin = 4; // Switch connected to pin 4
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void setup() {
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pinMode(switchPin, INPUT); // Set pin 0 as an input
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Serial.begin(9600); // Start serial communication at 9600 bps
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}
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void loop() {
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if (digitalRead(switchPin) == HIGH) { // If switch is ON,
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Serial.write(1); // send 1 to Processing
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} else { // If the switch is not ON,
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Serial.write(0); // send 0 to Processing
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}
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delay(100); // Wait 100 milliseconds
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}
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*/
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