gistfile1.cpp

/*
 * Web Server
 *
 * (Based on Ethernet's WebServer Example)
 *
 * A simple web server that shows the value of the analog input pins.
 */

#include <SPI.h>
#include <WiFly.h>
#include <Wire.h>
#include <SHT2x.h>

#include "Credentials.h"

WiFlyServer server(80);

void setup() {
  Wire.begin();
  WiFly.begin();

  if (!WiFly.join(ssid, passphrase)) {
    while (1) {
      // Hang on failure.
    }
  }

  Serial.begin(9600);
  Serial.print("IP: ");
  Serial.println(WiFly.ip());

  server.begin();
}

String readString = String(100);
String teststring = String(100);
String finalstring = String(100);
String flag = String(2);
int ind1 = 0;
int ind2 = 0;
int pos = 0;

void loop() {

  float temp = SHT2x.GetTemperature();
  float rh = SHT2x.GetHumidity();

  delay(100);
  WiFlyClient client = server.available();
  delay(100);
  if (client) {
    Serial.println("We have a client!");
    // an http request ends with a blank line
    boolean current_line_is_blank = true;
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        Serial.print(c);

        if (readString.length() < 100) {
          //store characters to string
          readString.concat(c);
        }

        // if we've gotten to the end of the line (received a newline
        // character) and the line is blank, the http request has ended,
        // so we can send a reply
        if (c == '\n' && current_line_is_blank) {

          if(readString.indexOf("callback=") >=0) { //test for servo control sring
            //readString.replace('y', '#');
            pos = readString.length(); //capture string length
            //find start of servo command string (#)
            ind1 = readString.indexOf("callback=")+9;
            //capture front part of command string
            teststring = readString.substring(ind1, pos);
            //locate the end of the command string
            ind2 = teststring.indexOf(' ');
            //capturing the servo command string from readString
            finalstring = readString.substring(ind1, ind2+ind1);
            //print "finalstring" to com port;
            Serial.println(finalstring); //print string with CR
          }

          // send a standard http response header
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: application/json");
          client.println();

          client.print(finalstring);
          client.print("('{");
          client.print("\"temp\":");
          client.print(temp);
          client.print(",");
          client.print("\"hum\":");
          client.print(rh);
          client.println("}')");

          delay(100);
          client.stop();
          break;
        }
        if (c == '\n') {
          // we're starting a new line
          current_line_is_blank = true;
        } 
        else if (c != '\r') {
          // we've gotten a character on the current line
          current_line_is_blank = false;
        }
      }
    }
    // give the web browser time to receive the data
    delay(100);
    client.stop();
  }
}