/*H*******************************************************
WiFi Web Server
A simple web Srv that shows the value of the analog input pins.
using a WiFi shield.
This example is written for a network using WPA encryption. For
WEP or WPA, change the WiFi.begin() call accordingly.
Circuit:
* WiFi shield attached
* Analog inputs attached to pins A0 through A5 (optional)
created 13 July 2010
by dlf (Metodo2 srl)
modified 31 May 2012
by Tom Igoe
********************************************************/
#include <SPI.h>
#include <WiFi.h>

//************************* DEFINES ************************************

//************************* PROTOTYPES ************************************

//************************* VARIABLES ************************************
char ssid[] = "yourNetwork";                          // NETWORK SSID (NAME)
char pass[] = "secretPassword";                          // NETWORK PASSWORD
int  KeyNdx = 0;                  // NETWORK KEY iNDEX NUMBER (ONLY FOR WEP)
int status = WL_IDLE_STATUS;
WiFiServer Srv( 80 );

/*F********************************************************************
*
**********************************************************************/
void 
setup() 
{
	Serial.begin( 9600 );           // INIT SERIAL AND WAIT FOR PORT TO OPEN
	while( !Serial ) 
	{
		;// WAIT FOR SERIAL PORT TO CONNECT. NEEDED FOR NATIVE USB PORT ONLY
	}
	if( WiFi.status() == WL_NO_SHIELD )      // CHECK FOR PRESENCE OF SHIELD
	{
		Serial.println( "WiFi shield not present" );
		while( true );                                     // DON'T CONTINUE
	}
	String fv = WiFi.firmwareVersion();
	if( fv != "1.1.0" )
		Serial.println( "Please upgrade the firmware" );
	while( status != WL_CONNECTED )    // ATTEMPT TO CONNECT TO WiFi NETWORK
	{
		Serial.print( "Attempting to connect to SSID: ");
		Serial.println( ssid );
// CONNECT TO WPA/WPA2 NETWORK. CHANGE THIS LINE IF USING OPEN OR WEP NETWORK
		status = WiFi.begin( ssid, pass );
		delay( 10000 );                    // WAIT 10 SECONDS FOR CONNECTION
	}
	Srv.begin();
	printWifiStatus();          // YOU'RE CONNECTED NOW, SO PRINT OUT STATUS
}
/*F********************************************************************
*
**********************************************************************/
void 
loop() 
{
	WiFiClient client = Srv.available();     // LISTEN FOR INCOMING CLIENTS
	if( client ) 
	{
		Serial.println( "new client" );
		bool currentLineIsBlank = true; // HTTP REQUEST ENDS WITH BLANK LINE
		while( client.connected() ) 
		{
			if( client.available()) 
			{
				char c = client.read();
				Serial.write(c);
// IF END OF LINE (NEWLINE CHAR) AND LINE IS BLANK, HTTP REQUEST ENDED, SEND REPLY
				if( c == '\n' && currentLineIsBlank ) 
				{                    // SEND A STANDARD HTTP RESPONSE HEADER
					client.println( "HTTP/1.1 200 OK" );
					client.println( "Content-Type: text/html");
					     // CONN WILL BE CLOSED AFTER COMPLETION OF RESPONSE
					client.println( "Connection: close");  
					               // REFRESH PAGE AUTOMATICALLY EVERY 5 SEC
					client.println( "Refresh: 5");  
					client.println();
					client.println( "");
					client.println( "");
					// OUTPUT VALUE OF EACH ANALOG INPUT PIN
					for( int nanChnl = 0; nanChnl < 6 ; nanChnl++) 
					{
						int sensorReading = analogRead( nanChnl );
						client.print( "analog input ");
						client.print( nanChnl );
						client.print( " is " );
						client.print( sensorReading );
						client.println( "
" );
					}
					client.println( "" );
					break;
				}
				if( c == '\n' ) 
					currentLineIsBlank = true;        // STARTING A NEW LINE
				else if( c != '\r') 
					currentLineIsBlank = false;   // RCVD CHAR ON CURR LINE
			}
		}
		delay( 1 );                // GIVE WEB BROWSER TIME TO RECEIVE DATA
		client.stop();                                  // CLOSE CONNECTION
		Serial.println( "client disconnected" );
	}
}
/*F********************************************************************
*
**********************************************************************/
void 
printWifiStatus() 
{
	Serial.print( "SSID: " );
	Serial.println( WiFi.SSID() );      // PRINT SSID OF NETWORK ATTACHED TO
	IPAddress ip = WiFi.localIP();
	Serial.print( "IP Address: " );
	Serial.println( ip );
	long rssi = WiFi.RSSI();
	Serial.print("signal strength (RSSI):");// PRINT RECEIVED SIGNAL STRENGTH
	Serial.print( rssi );
	Serial.println( " dBm" );
}