coding problems not sure about whats wrong

system · September 21, 2014, 2:17am

this is my first post and i think i am just asking a stupid question but i don't know for sure. I am following this code below from my book and I understand that it is supposed to run on the computer;but how do I make it do that.

import processing.serial.*;
String feed = "hppt://blog.makezine.com/index.xml";
int intirval = 10;
int lastTime;
int love = 0;
int peace = 0;
int arduino = 0;
int light = 0;
Serial port;
color c;
String cs;
String buffer = "";
PFont font;
void setup() {
size(640, 480);
frameRate(10);
font = loadFont("HelveticaNueue-Bold-32.vlw");
fill(255);
textFont(font, 32)
String arduinoPort = Serial.list()[3];
port = new Serial(this, arduinoPort, 9600);
lastTime = 0;
fetchData();
}
void draw() {
backround( c );
int n = (interval - ((milis() - lastTime) / 1000));
c = color(peace, love, arduino);
cs = "#" + hex(c, 6);
text("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, 200);
text("" + love, 130 240);
rect(200, 212, love, 28);
text("arduino ", 10, 280);
text("" + arduino, 130, 280);
rect(200, 252, arduino, 28);
text("sending", 10, 340);
text(cs, 200, 340);
text("light level", 10, 380);
rect(200, 352, light / 10.23, 28);
if (n <= 0) {
fetchData();
lastTime = millis();
}
port.write(cs);
if (port.avaliable() > 0) {
int inByte = port.read();
if (inByte != 10) {
buffer = buffer + char(inByte);
}
else {
if (buffer.length() > 1) {
buffer = buffer.substring(0, buffer.length() - 1);
light = int(buffer);
buffer = "";
port.clear();
}
}
}
void fetchData() {
String data;
String chunk:
love = 0
peace = 0;
arduino = 0:
try {
URL url = new Url(feed);
URLConnection conn = url.openConnection();
conn.connect();
BufferedReader in = new
BufferedReader(new InputStreamReader(conn.getInputStream()));
while ((data = in, readLine()) != null) {
StringTokenizer st =
new StringTokenizer(data, ""<>,.()[] ");
while (st.hasMoreTokens()) {
chunk = st.nextToken().toLowerCase() ;
if (chunk.indexOf("love") >= 0 )
love++;
if (ckunk.indexOf("peace") >= 0)
peace++;
if (chunk.indexOf("arduino") >= 0)
arduino++;
}
}
if (peace > 64) peace = 64;
if (love > 64) love = 64;
if (arduino > 64) arduino = 64;
peace = peace * 4;
love = love * 4;
arduino = arduino * 4;
}
catch (Exeption ex) {
ex.printStackTrace();
System.out, println("ERROR: " + ex.getMessage());
}
}

Piethon · September 21, 2014, 4:02am

Please make sure you post any code within the code tags, so it's easier to read. just put [code][/code] around it (without the * though)

Also, it looks like you're looking to run this code with Processing. I would suggest first looking at the Arduino with Processing tutorial.

system · September 21, 2014, 2:30pm

thanks

Piethon · September 21, 2014, 5:07pm

captianillogical:
thanks

Also, just a quick note, it looks like you have a typo:

String feed = "hppt://blog.makezine.com/index.xml";

Shouldn't that be 'http'?

system · September 21, 2014, 7:12pm

Shouldn't that be 'http'?

There are two typos. char * is seriously misspelled, too.

Henry_Best · September 22, 2014, 3:02am

There's also a 'ckunk' where I think he means 'chunk'.

system · October 6, 2014, 10:49pm

i am having a problem with the command void fetchData(){ in processing i am in java mode of processing what is the problem also this is the same code from earlier

system · October 7, 2014, 12:52am

import processing.serial.*;
String feed = "hppt://blog.makezine.com/index.xml";
int intirval = 10;
int lastTime;
int love  = 0;
int peace  = 0;
int arduino  = 0;
int light = 0;
Serial port;
color c;
String cs;
String buffer = "";
PFont font;
void setup(){
  size(640,480);
  frameRate(10);
  font = loadFont("HelveticaNueue-Bold-32.vlw");
  fill(255);
  textFont(font, 32);
  String arduinoPort = Serial.list()[0];
  port = new Serial(this, arduinoPort, 9600);
  lastTime = 0;
   fetchData();
}
void draw(){
  backround( c );
  int n = (interval - ((milis()-lastTime)/1000));
  c = color(peace, love, arduino);
  cs = "#" + hex(c,6);
  text("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",10,200);
  text(""+ love, 130, 240);
  rect(200,212, love, 28);
  text("arduino ",10,280);
  text("" + arduino, 130, 280);
  rect(200,252, arduino, 28);
  text("sending", 10, 340);
  text(cs, 200,340);
  text("light level", 10, 380);
  rect(200, 352,light/10.23,28);
  if (n <= 0){
    fetchData();
    lastTime = millis();
  }
  port.write(cs);
  if (port.avaliable() > 0) {
    int inByte = port.read();
    if (inByte != 10) {
      buffer = buffer + char(inByte);
    }
    else{
      if (buffer.length() > 1) {
        buffer = buffer.substring(0,buffer.length() -1);
        light = int(buffer);
        buffer = "";
        port.clear();
      }
    }
  }
   fetchData
    String data;
    String chunk;
    love  =0;
    peace =0;
    arduino =0;
    try{
      URL url = new Url(feed);
      URLConnection conn = url.openConnection();
      conn.connect();
      BufferedReader in = new
      BufferedReader(new InputStreamReader(conn.getInputStream()));
      while ((data = in.readLine()) != null){
        StringTokenizer st =
        new StringTokenizer(data,"\"<>,.()[] ");
        while (st.hasMoreTokens()){
          chunk= st.nextToken().toLowerCase();
          if (chunk.indexOf("love") >= 0 )
            love++;
          if (chunk.indexOf("peace") >= 0)
          peace++;
          if (chunk.indexOf("arduino") >= 0)
          arduino++;
        }
      }
      if (peace > 64)  peace = 64;
      if (love > 64)  love = 64;
      if (arduino > 64) arduino = 64;
      peace = peace * 4;
      love = love * 4;
      arduino = arduino * 4;
    }
    catch (Exeption ex) {
      ex.printStackTrace();
      System.out.println("ERROR: "+ex.getMessage());
    }
  }

im doing this sketch from my book and i am having a lot of problems.I understand that it is Processing code and every time i try to run processing with the arduino plugin it just crashes! Also can i run this program without the plugin. in conclusion i am unsure about pretty much everything. plaese help

partsofme · October 7, 2014, 1:18am

hppt://blog.makezine.com/index.xml should use http instead of hppt... try that?

michinyon · October 7, 2014, 1:20am

this is a processing problem, not an arduino problem.

system · October 7, 2014, 11:29am

  String arduinoPort = Serial.list()[0];

If Serial.list() returns NULL, because there are no com ports that the Arduino could be listening to, referencing the first item in the non-existent list WILL cause a crash.

system · October 7, 2014, 11:47am

i am having a problem with the command

Bummer, dude!

Now, if you defined what the problem was, maybe we could offer some suggestions.

i am in java mode of processing

What the heck does this mean?

what is the problem also this is the same code from earlier

Complete lack of punctuation.

system · October 8, 2014, 12:36am

unexpected token void was command my problem
ignore my punctuation and and at the top right it says mode manager and i cant get rid of java mode without another mode such as python

system · October 8, 2014, 12:42am

michinyon:
this is a processing problem, not an arduino problem.-michinyon

everyone on processing says this is an arduino problem

system · October 8, 2014, 12:45am

was command my problem

Could be that because of your piss-poor indenting, you are trying to define the fetchData() function inside the draw() function.

at the top right it says mode manager

At the top, right of what?

Idontunderstandwhyyouthinkpunctuationandpropercapitalizationdoesn'tmatter.

system · October 8, 2014, 12:53am

everyone on processing says this is an arduino problem

and every time i try to run processing with the arduino plugin it just crashes!

Unplug the Arduino. Run Processing. Does it crash? If so, it can't possibly be an Arduino problem.

You should print the list returned by Serial.list(), with delimiters before and after the list, so the list is quite clear. If the list is empty, you have one problem. If it's not, you have another problem. Which one are we trying to help you solve?

nickgammon · October 8, 2014, 1:50am

Isn't there a Processing forum?

nickgammon · October 8, 2014, 1:54am

Please do not cross-post. This wastes time and resources as people attempt to answer your question on multiple threads.

Threads merged.

Moderator

nickgammon · October 8, 2014, 2:00am

Here is the same question on the Processing forum:

http://forum.processing.org/two/discussion/7485/how-to-get-arduino-to-work-with-processing

quark:
I have moved this to the Arduino forum

In line 2 should it not be http rather than hppt

captianillogical:
everyone on processing says this is an arduino problem

Everyone? One person moved your post to the Arduino section of the Processing forum. They did not tell you to go to the Arduino forum.

system · October 8, 2014, 7:07am

PaulS:

Shouldn't that be 'http'?

There are two typos. char * is seriously misspelled, too.

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