Running the Wifi Scanner
From Lofaro Lab Wiki
Running the Wifi Scanner
The wifi scanner is created to allow for multiple wifi dongles to be run. This allows to get data much faster than with a single dongle.
The wifi scanner has two parts, the trigger and the wlan nodes that will get MAC address and signal strength and write this information to a ROS topic.
1.) To start the trigger that controls when the wifi dongles will run, type:
rosrun wifi_scanner trigger wlan0 wlan1
The wlanN refers to the wifi dongle's network identity in Linux.
2.) Next lets start a scanner. Open a new terminal and type:
sudo -s rosrun wifi_scanner scan_wifi -i wlan0
3.) You should have as many wlan nodes as you have wifi dongles. Open another terminal and type:
sudo -s rosrun wifi_scanner scan_wifi -i wlan1
You now have two nodes that will write to the same topic. The trigger will time the two nodes in such a way as to double the speed at which we can get data.
