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## WiFi101 library

This library allows you to use the Arduino WiFi Shield 101. This is a powerful IoT shield with crypto-authentication, developed with ATMEL, that connects your Arduino or Genuino to the internet wirelessly. Connecting it to a WiFi network is simple, no further configuration in addition to the SSID and the password are required. It can serve as either a server accepting incoming connections or a client making outgoing ones. The library supports WEP and WPA2 Personal encryption and also WPA2 Enterprise. Compared to the retired WiFi Shield and the related library, this product and library support all the same methods plus the `connectSSL()` and WPA2 Enterprise.

The board connected to the shield communicates with the WiFi shield 101 using the SPI bus. This is on digital pins 11, 12, and 13 on the Uno and pins 50, 51, and 52 on the Mega. On both boards, pin 10 is used as SS. On the Mega, the hardware SS pin, 53, is not used but it must be kept as an output or the SPI interface won't work. Digital pin 7 is used as a handshake pin between the Wifi shield 101 and the underlying board, and should not be used. The WiFi101 library is very similar to the Ethernet and the library WiFi, and many of the function calls are the same.

For additional information on the Arduino WiFi Shield 101, see the Getting Started page and the Arduino WiFi Shield 101 hardware page.

### Examples

- wifi101ConnectNoEncryption : Demonstrates how to connect to an open network
- wifi101ConnectWithWEP : Demonstrates how to connect to a network that is encrypted with WEP
- wifi101ConnectWithWPA : Demonstrates how to connect to a network that is encrypted with WPA2 Personal
- wifi101ScanNetworks : Displays all WiFi networks in range
- wifi101WiFiChatServer : Set up a simple chat server
- wifi101WiFiWebClient : Connect to a remote webserver
- wifi101WiFiWebClientRepeating : Make repeated HTTP calls to a webserver
- wifi101WiFiWebServer : Serve a webpage from the WiFi shield
- Wifi101WiFiUdpSendReceiveString : Send and receive a UDP string
- wifi101UdpNTPClient : Query a Network Time Protocol (NTP) server using UDP

#### WiFi class

The WiFi class initializes the ethernet library and network settings.

- begin()
- disconnect()
- config()
- setDNS()
- SSID()
- BSSID()
- RSSI()
- encryptionType()
- scanNetworks()
- status()
- getSocket()
- macAddress()

#### IPAddress class

The IPAddress class provides information about the network configuration.

- localIP()
- subnetMask()
- gatewayIP()

#### Server class

The Server class creates servers which can send data to and receive data from connected clients (programs running on other computers or devices).

- Server
- WiFiServer()
- begin()
- available()
- write()
- print()
- println()

#### Client class

The client class creates clients that can connect to servers and send and receive data.

- Client
- WiFiClient()
- WiFiSSLClient()
- connected()
- connect()
- connectSSL()
- write()
- print()
- println()
- available()
- read()
- flush()
- stop()

#### UDP class

The UDP class enables UDP message to be sent and received.

- WiFiUDP
- begin()
- available()
- beginPacket()
- endPacket()
- write()
- parsePacket()
- peek()
- read()
- flush()
- stop()
- remoteIP()
- remotePort()

Reference Home

Corrections, suggestions, and new documentation should be posted to the Forum.

The text of the Arduino reference is licensed under a Creative Commons Attribution-ShareAlike 3.0 License. Code samples in the reference are released into the public domain.

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