#busstop arduino

busstop-arduino

 Circuit:
 * Ethernet shield attached to pins 10, 11, 12, 13
 
 created 21 May 2011
 by Tom Igoe
 
 This code is in the public domain.
 
 */
#include <SPI.h>
#include <Ethernet.h>
#include <Wire.h>
#include "BlinkM_funcs.h"


// Enter a MAC address and IP address for your controller below.
// The IP address will be dependent on your local network:
byte mac[] = {
  0x00, 0xAA, 0xBB, 0xCC, 0xDE, 0x01 };
IPAddress ip(192,168,1,20);
#define blinkm_addr 0x00
int delay_time = 200; // time betwen colors, 1000 milliseconds = 1 second
int num_colors = 7;  // how many colors are there the list below
int i = 0;
byte r,g,b;


// initialize the library instance:
EthernetClient client;

const int requestInterval = 10000;  // delay between requests

char serverName[] = "leumund.ch";  // twitter URL

boolean requested;                   // whether you've made a request since connecting
long lastAttemptTime = 0;            // last time you connected to the server, in milliseconds

String currentLine = "";            // string to hold the text from server
String tweet = "";                  // string to hold the tweet
boolean readingTweet = false;       // if you're currently reading the tweet

void setup() {
  // reserve space for the strings:
  currentLine.reserve(256);
  tweet.reserve(150);
  BlinkM_beginWithPower(); 
  BlinkM_stopScript( blinkm_addr );  // turn off startup script
 
BlinkM_fadeToRGB(blinkm_addr,0x00,0x00,0x00);
BlinkM_setFadeSpeed(blinkm_addr,20);
  // initialize serial:
  Serial.begin(9600);
  // attempt a DHCP connection:
  if (!Ethernet.begin(mac)) {
    // if DHCP fails, start with a hard-coded address:
    Ethernet.begin(mac, ip);
  }
  // connect to Twitter:
  connectToServer();
}



void loop()
{


  // delay(delay_time);  // wait a bit because we don't need to go fast
  //   Serial.println(millis()-lastAttemptTime);

 //Serial.println("start loop");
  if (client.connected()) {
 //Serial.println("if client connected");

    if (client.available()) {
     
   //    Serial.println("if client avalaible");
      // read incoming bytes:
      char inChar = client.read();

      // add incoming byte to end of line:
      currentLine += inChar;
     
     

      // if you get a newline, clear the line:
      if (inChar == '\n') {
    //   Serial.println(currentLine);
     
       if ( currentLine.startsWith("off",0)) {
         Serial.println("OFF");
         BlinkM_fadeToRGB(blinkm_addr,0x00,0x00,0x00);
         client.stop();
                             Serial.println("stop");  
    }
     
       
       if ( currentLine.startsWith("green",0)) {
         Serial.println("GREEN");
         BlinkM_fadeToRGB(blinkm_addr,0x00,0x99,0x00);
         client.stop();
                             Serial.println("stop");  
    }
   
       if ( currentLine.startsWith("red",0)) {
         Serial.println("RED");
         BlinkM_fadeToRGB(blinkm_addr,0x99,0x00,0x00);
         client.stop();
                             Serial.println("stop");  
    }
       if ( currentLine.startsWith("error",0)) {
         Serial.println("ERROR");

         BlinkM_playScript(blinkm_addr, 1,0,0);
         client.stop();
                             Serial.println("stop");  
    }
        currentLine = "";
      }
     
  
    }  
   //  client.stop();
      //       Serial.println("stop");

  }
 else if ((millis() - lastAttemptTime) >= requestInterval) {
    // if you're not connected, and two minutes have passed since
    // your last connection, then attempt to connect again:
   
     Serial.println("restart connect");
    connectToServer();
  }
}

void connectToServer() {
  // attempt to connect, and wait a millisecond:
  Serial.println("connecting to server...");
  if (client.connect(serverName, 80)) {
    Serial.println("making HTTP request...");
    // make HTTP GET request to twitter:
    client.println("GET /busstop/index.php HTTP/1.1");
    client.println("HOST: leumund.ch");
    client.println();
  }
  // note the time of this connect attempt:
  lastAttemptTime = millis();
          //   client.stop();       
}

busstop_parser.php

<?
/* 
#busstop php parser für Haltestellen Informationen
2012 by Christian Leu - leumund.ch 

*/
//parameter

// walking time in seconds
$walking = "180";

//minimum threshold = white wenn Zeit noch länger wie 4 Minuten
$threshold ="60";

//destination wie in fahrplan.search.ch angegeben, z.b. Guisanplatz
$destination ="Guisanplatz";

//haltestelle, URL wie in fahrplan.search.ch verwendet. z.B. "http://fahrplan.search.ch/bern,sulgenau"
$haltestelle = "http://fahrplan.search.ch/bern,sulgenau";

// Keine weiteren Informationen oder Anpassungen notwendig! (Bzw. nur wer auch in etwa begreift was er tut nach dieser Linie)

$html=file_get_contents($haltestelle);


    /*** a new dom object ***/
    $dom = new domDocument;

    /*** load the html into the object ***/
    $dom->loadHTML($html);

    /*** discard white space ***/
    $dom->preserveWhiteSpace = false;

    /*** the table by its tag name ***/
    $tables = $dom->getElementsByTagName('table');

    /*** get all rows from the table ***/
    $rows = $tables->item(4)->getElementsByTagName('tr');

    /*** loop over the table rows ***/
    foreach ($rows as $row)
    {
        /*** get each column by tag name ***/
        $cols = $row->getElementsByTagName('td');

                if  ($cols->item(3)->nodeValue==$destination){

            $zeiten = explode(",", $cols->item(2)->nodeValue);
           $zeit = explode(":", $zeiten[0]);
          $jetzt = date('H');

           if  ($zeit[0]<$jetzt){ $tagesupdate ="+1 day"; } else { $tagesupdate ="now";}
                     $tag = date("d",strtotime($tagesupdate));
                      $monat = date("m",strtotime($tagesupdate));
                    $jahr = date("Y",strtotime($tagesupdate));
              
               $nexttrain = mktime($zeit[0], $zeit[1],0,$monat,$tag,$jahr,0);   
               $seconds = ($nexttrain - time());
                     if ($seconds>($walking+$threshold)) { echo "off";$output = "off"; }
                  if ($seconds>=($walking) AND $seconds<=($walking+$threshold)) { echo "green";$output = "green"; }
                  if ($seconds<($walking)) { echo "red"; $output = "red"; }
$count++;

        }
       
    }



?>