Difference between revisions of "Setting up Wifi Scanner"
From Lofaro Lab Wiki
(→Running the Wifi Scanner) |
(→Running the Wifi Scanner) |
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sudo -s | sudo -s | ||
| − | rosrun wifi_scanner scan_wifi wlan0 | + | rosrun wifi_scanner scan_wifi -i wlan0 |
| Line 22: | Line 22: | ||
sudo -s | sudo -s | ||
| − | rosrun wifi_scanner scan_wifi wlan1 | + | 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. | 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. | ||
Latest revision as of 21:16, 17 March 2015
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.
