#Yun-Wifi-Switch ##What is this for? Setting up the Yun to work on nyu Wi-Fi and itpsandbox. The instructions and the code in this repo are designed to make it easy to switch between NYUs Enterprise network and ITPs sandbox which is a WPA2 network. They are a programmatic version of Karl Wards Connected Devices notes
If you just want an easier way to switch your Wi-Fi network I suggest you look at Sam Brenners excellent Yun-easy-wifi-switch repo. ##Prequisites
The first time you setup your Yun go through the normal instructions to do a system upgrade of the Yun. This can be done by following the instructions at this link.
Along with Sys Upgrade be sure to set the system clock with the right time zone through the web interface. It is really important to do this. If your clock is way off from the current time (by default it is set to 2011) NYUs 802.1X network will deauthenticate your device.
If using the Yun on itpsandbox you should register the device on the NYU computer registration page.
##How to set it up
The Yun stores your network preferences on the Linino side in a file called wireless full path is /etc/config/wireless.
You can view your settings by executing the following command:
sudo less /etc/config/wireless
This repository contains two versions of this wireless config file. They can be found at in the config_files/ folder. One of them is for connecting to the itpsandbox and the other is for connecting to nyu. In order to get your Yun to switch networks it is necessary to swap the wireless config file with one of the files in this repository.
###Copy the files to an SD Card
In order to be able to do any of this you need to take the files from the SD Card Folder in this repo and copy them onto a miniSD that you then connect to your Yun. Once you have copied the files you can change the network in one of two ways.
###Using the Arduino Sketch
This repository contains an Arduino sketch which you can use to swap the files.
Copy NyuNetworkSketch to your Arduino sketch folder.
Once you have copied it, open the .ino file. In order to set the correct network you need to set the mode and your credentials.
Important :
Connecting to NYU requires your netid and password. The Yun also needs this information in order to connect to NYU. To make this step safer the setup requires you to add a new file called nyucreds.h. This file should be in NyuNetworkSketch and should have the following parameters
#define username "netid"
#define password "password"
Your username and password will be stored in PLAIN TEXT on the Yun in /etc/config/wireless If you are using someone else's yun or one from the ER please be sure to remove your information from it by connecting back to itpsandbox
Once you have added the nyucreds.h you can set the mode by uncommenting one of the following lines in NyuNetworkSketch.ino:
String mode = "itpsanbox"; //use this for sandbox
String mode = "nyu"; //use this for nyu
Compile and run the sketch and you should see the following outpt:
###Advanced method
In case you don't want to use the sketch and want to do this manually instead you still need to copy the SD_CARD folder to the Yun. Once copied look at configure.sh. This is what the sketch calls and it contains the linux commands to copy the files to the right place.