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C Programming for Arduino by Julien Bayle

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Playing with Wi-Fi

We previously learned how to use the Ethernet library. Then, we tested Bluetooth for short-range network communications. Now, let's test Wi-Fi for medium range communications still without any wire.

What is Wi-Fi?

Wi-Fi is a set of communication protocols wireless driven by standards of IEEE 802.11. These standards describe characteristics of Wireless Local Area Networks (WLANs).

Basically, multiple hosts having Wi-Fi modules can communicate using their IP stacks without wire. There are multiple networking modes used by Wi-Fi.

Infrastructure mode

In that mode, Wi-Fi hosts can communicate between each other via an access point.

This access point and hosts have to be set up with the same Service Set Identifier (SSID), which is a network ...

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