Hi guys, I'm trying the Example 08 from "Getting started with Arduino"
I used the code but there are compilation errors:
the first one is "include does not name a type"
on
include processing.serial.*;
and when i remove the include line, i get another error " Serial does not name a type"
on
Serial port;
My board is Arduino UNO
// Example 08A: Arduino networked lamp
// parts of the code are inspired
// by a blog post by Tod E. Kurt (todbot.com)
//
// Copy and paste this example into an empty Processing sketchinclude processing.serial.*;
String feed = "http://blog.makezine.com/index.xml";
int interval = 10; // retrieve feed every 60 seconds;
int lastTime; // the last time we fetched the contentint love = 0;
int peace = 0;
int arduino = 0;int light = 0; // light level measured by the lamp
Serial port;
color c;
String cs;String buffer = ""; // Accumulates characters coming from Arduino
PFont font;
void setup() {
size(640,480);
frameRate(10); // we don't need fast updatesfont = loadFont("HelveticaNeue-Bold-32.vlw");
fill(255);
textFont(font, 32);
// IMPORTANT NOTE:
// The first serial port retrieved by Serial.list()
// should be your Arduino. If not, uncomment the next
// line by deleting the // before it, and re-run the
// sketch to see a list of serial ports. Then, change
// the 0 in between [ and ] to the number of the port
// that your Arduino is connected to.
//println(Serial.list());
String arduinoPort = Serial.list()[0];
port = new Serial(this, arduinoPort, 9600); // connect to ArduinolastTime = 0;
fetchData();
}void draw() {
background( c );
int n = (interval - ((millis()-lastTime)/1000));// Build a colour based on the 3 values
c = color(peace, love, arduino);
cs = "#" + hex(c,6); // Prepare a string to be sent to Arduinotext("Arduino Networked Lamp", 10,40);
text("Reading feed:", 10, 100);
text(feed, 10, 140);text("Next update in "+ n + " seconds",10,450);
text("peace" ,10,200);
text(" " + peace, 130, 200);
rect(200,172, peace, 28);text("love ",10,240);
text(" " + love, 130, 240);
rect(200,212, love, 28);text("arduino ",10,280);
text(" " + arduino, 130, 280);
rect(200,252, arduino, 28);// write the colour string to the screen
text("sending", 10, 340);
text(cs, 200,340);text("light level", 10, 380);
rect(200, 352,light/10.23,28); // this turns 1023 into 100if (n <= 0) {
fetchData();
lastTime = millis();
}port.write(cs); // send data to Arduino
if (port.available() > 0) { // check if there is data waiting
int inByte = port.read(); // read one byte
if (inByte != 10) { // if byte is not newline
buffer = buffer + char(inByte); // just add it to the buffer
}
else {// newline reached, let's process the data
if (buffer.length() > 1) { // make sure there is enough data// chop off the last character, it's a carriage return
// (a carriage return is the character at the end of a
// line of text)
buffer = buffer.substring(0,buffer.length() -1);// turn the buffer from string into an integer number
light = int(buffer);// clean the buffer for the next read cycle
buffer = "";// We're likely falling behind in taking readings
// from Arduino. So let's clear the backlog of
// incoming sensor readings so the next reading is
// up-to-date.
port.clear();
}
}
}}
void fetchData() {
// we use these strings to parse the feed
String data;
String chunk;// zero the counters
love = 0;
peace = 0;
arduino = 0;
try {
URL url = new URL(feed); // An object to represent the URL
// prepare a connection
URLConnection conn = url.openConnection();
conn.connect(); // now connect to the Website// this is a bit of virtual plumbing as we connect
// the data coming from the connection to a buffered
// reader that reads the data one line at a time.
BufferedReader in = new
BufferedReader(new InputStreamReader(conn.getInputStream()));// read each line from the feed
while ((data = in.readLine()) != null) {StringTokenizer st =
new StringTokenizer(data,""<>,.()[] ");// break it down
while (st.hasMoreTokens()) {
// each chunk of data is made lowercase
chunk= st.nextToken().toLowerCase() ;if (chunk.indexOf("love") >= 0 ) // found "love"?
love++; // increment love by 1
if (chunk.indexOf("peace") >= 0) // found "peace"?
peace++; // increment peace by 1
if (chunk.indexOf("arduino") >= 0) // found "arduino"?
arduino++; // increment arduino by 1
}
}// Set 64 to be the maximum number of references we care about.
if (peace > 64) peace = 64;
if (love > 64) love = 64;
if (arduino > 64) arduino = 64;peace = peace * 4; // multiply by 4 so that the max is 255,
love = love * 4; // which comes in handy when building a
arduino = arduino * 4; // colour that is made of 4 bytes (ARGB)
}
catch (Exception ex) { // If there was an error, stop the sketch
ex.printStackTrace();
System.out.println("ERROR: "+ex.getMessage());
}}