Editing esp (section)

===WiFi(ESP8266WiFi library)===
This is mostly similar to WiFi shield library. Differences include:<br>
:'''WiFi.mode(m)'''
::set mode to WIFI_AP, WIFI_STA, WIFI_AP_STA or WIFI_OFF.
:'''call WiFi.softAP(ssid)'''
::to set up an open network.
:'''call WiFi.softAP(ssid, password)'''
::to set up a WPA2-PSK network (password should be at least 8 characters)
:'''WiFi.macAddress(mac)'''
::is for STA, WiFi.softAPmacAddress(mac) is for AP.
:'''WiFi.localIP()'''
::is for STA, '''WiFi.softAPIP()''' is for AP.
:'''WiFi.printDiag(Serial)'''
::will print out some diagnostic info
:'''WiFiUDP class'''
::supports sending and receiving multicast packets on STA interface. When sending a multicast packet, replace udp.beginPacket(addr, port) with udp.beginPacketMulticast(addr, port, WiFi.localIP()). When listening to multicast packets, replace udp.begin(port) with udp.beginMulticast(WiFi.localIP(), multicast_ip_addr, port). You can use udp.destinationIP() to tell whether the packet received was sent to the multicast or unicast address.
<br>
:WiFiServer, WiFiClient, and WiFiUDP behave mostly the same way as with WiFi shield library. Four samples are provided for this library. 
<br>
You can see more commands  [http://www.arduino.cc/en/Reference/WiFi here].
<br>

====WL_DEFINITIONS====
:WL_IDLE_STATUS      = 0,
:WL_NO_SSID_AVAIL    = 1,
:WL_SCAN_COMPLETED   = 2,
:WL_CONNECTED        = 3,
:WL_CONNECT_FAILED   = 4,
:WL_CONNECTION_LOST  = 5,
:WL_WRONG_PASSWORD   = 6,
:WL_DISCONNECTED     = 7

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====Function to print the wifi.status====
 <nowiki>const char* wl_status_to_string(wl_status_t status) {
  switch (status) {
    case WL_IDLE_STATUS: return "WL_IDLE_STATUS";
    case WL_NO_SSID_AVAIL: return "WL_NO_SSID_AVAIL";
    case WL_SCAN_COMPLETED: return "WL_SCAN_COMPLETED";
    case WL_CONNECTED: return "WL_CONNECTED";
    case WL_CONNECT_FAILED: return "WL_CONNECT_FAILED";
    case WL_CONNECTION_LOST: return "WL_CONNECTION_LOST";
    case WL_DISCONNECTED: return "WL_DISCONNECTED";
  }
}
Serial.println(wl_status_to_string(WiFi.status()));</nowiki>

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=====WiFi.status()=====
The status function in the WiFi class, doesn’t take any arguments but it returns stuff depending on the status of the network that you’re connected to.
;The WiFi.status function returns a value:<br>

{| class="wikitable"
! style="font-weight:bold;" | Code
! style="text-align: center; font-weight:bold;" | Vulue
! style="font-weight:bold;" | Meaning
|-
| WL_IDLE_STATUS
| style="text-align: center;" | 0
| WiFi is in process of changing between statuses
|-
| WL_NO_SSID_AVAIL
| style="text-align: center;" | 1
| SSID cannot be reached
|-
| WL_SCAN_COMPLETED
| style="text-align: center;" | 2
| 
|-
| WL_CONNECTED
| style="text-align: center;" | 3
| Successful connection is established
|-
| WL_CONNECT_FAILED
| style="text-align: center;" | 4
| Password is incorrect
|-
| WL_CONNECTION_LOST
| style="text-align: center;" | 5
| 
|-
| WL_CONNECT_WRONG_PASSWORD
| style="text-align: center;" | 6
| Password is incorrect
| 
|-
| WL_DISCONNECTED
| style="text-align: center;" | 7
| not configured in station mode
|}

If you get code 1, WL_NO_SSID_AVAIL, try adding this before WiFi.begin():
 WiFi.enableInsecureWEP();
<br>

It is recommended by some to set the mode to STA:
 WiFi.mode(WIFI_AP_STA);
 WiFi.begin();

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