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150 lines
5.1 KiB
C++
150 lines
5.1 KiB
C++
/*
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Graph
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A simple example of communication from the Arduino board to the computer:
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the value of analog input 0 is sent out the serial port. We call this "serial"
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communication because the connection appears to both the Arduino and the
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computer as a serial port, even though it may actually use
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a USB cable. Bytes are sent one after another (serially) from the Arduino
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to the computer.
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You can use the Arduino serial monitor to view the sent data, or it can
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be read by Processing, PD, Max/MSP, or any other program capable of reading
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data from a serial port. The Processing code below graphs the data received
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so you can see the value of the analog input changing over time.
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The circuit:
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Any analog input sensor is attached to analog in pin 0.
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created 2006
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by David A. Mellis
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modified 9 Apr 2012
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by Tom Igoe and Scott Fitzgerald
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This example code is in the public domain.
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http://www.arduino.cc/en/Tutorial/Graph
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*/
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void setup() {
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// initialize the serial communication:
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Serial.begin(9600);
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}
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void loop() {
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// send the value of analog input 0:
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Serial.println(analogRead(A0));
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// wait a bit for the analog-to-digital converter
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// to stabilize after the last reading:
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delay(2);
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}
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/* Processing code for this example
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// Graphing sketch
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// This program takes ASCII-encoded strings
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// from the serial port at 9600 baud and graphs them. It expects values in the
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// range 0 to 1023, followed by a newline, or newline and carriage return
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// Created 20 Apr 2005
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// Updated 18 Jan 2008
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// by Tom Igoe
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// This example code is in the public domain.
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import processing.serial.*;
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Serial myPort; // The serial port
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int xPos = 1; // horizontal position of the graph
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void setup () {
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// set the window size:
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size(400, 300);
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// List all the available serial ports
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println(Serial.list());
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// I know that the first port in the serial list on my mac
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// is always my Arduino, so I open Serial.list()[0].
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// Open whatever port is the one you're using.
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myPort = new Serial(this, Serial.list()[0], 9600);
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// don't generate a serialEvent() unless you get a newline character:
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myPort.bufferUntil('\n');
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// set inital background:
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background(0);
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}
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void draw () {
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// everything happens in the serialEvent()
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}
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void serialEvent (Serial myPort) {
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// get the ASCII string:
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String inString = myPort.readStringUntil('\n');
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if (inString != null) {
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// trim off any whitespace:
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inString = trim(inString);
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// convert to an int and map to the screen height:
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float inByte = float(inString);
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inByte = map(inByte, 0, 1023, 0, height);
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// draw the line:
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stroke(127,34,255);
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line(xPos, height, xPos, height - inByte);
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// at the edge of the screen, go back to the beginning:
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if (xPos >= width) {
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xPos = 0;
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background(0);
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}
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else {
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// increment the horizontal position:
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xPos++;
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}
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}
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}
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*/
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/* Max/MSP v5 patch for this example
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----------begin_max5_patcher----------
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HJ5hhnng3h9HPj4lud02.1bxGw.
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-----------end_max5_patcher-----------
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*/
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