Setup wifi with WEP or WPA

[Patrice Boucher]

I would like to know if it’s possible to use WEP or WPA instead of WPA2?
Currentlys only 2 choices appears in the menu none and WPA2.
I have an older wifi router that i would like to use and it only supports WEP or WPA.
I have the Edimax dongle on the EV3.
If it’s possible then what should i do to set it up.

[Anders Søborg]

Hi there

Did you try to use WPA2 – as I remember it should be backwards compatible…

/Anders

[Patrice Boucher]

Yes i did but it did not connect. The router has WPA Pre-Shared key with TKIP or WEP 64bits and 128 bits

[Anders Søborg]

Hi there

sorry for the late reply – it seems that we don’t support old routers with only WEP or WPA encryption. It could be added but to be completly honest this is not our highest priority at the momment. You Will have to connect without encryption.

/Anders

[Patrice Boucher]

I was able to connect with wep. What i did is i created a file in /mnt/bootpar named wpa_supplicant_wep.conf
The file contains the following parametres:

ctrl_interface=/var/run/wpa_supplicant
network={
ssid=”myssid”
key_mgmt=NONE
wep_key0=FFFFFFFFFFFFFFFFFFFFFFFFFF
wep_tx_keyidx=0
auth_alg=SHARED
}

Then i modified the file startwlan in /home/root/lejos/bin to use the file /mnt/bootpar/wpa_supplicant_wep.conf
instead of /mnt/bootpar/wpa_supplicant.conf.

Now everything works fine.

[Anders Søborg]

Hi there

Nice work. I would like to include this is the upcoming release. In our firwmare we use the following function to generate the wpa_supplicant_wep.conf file.

static void WriteWpaSupplicantConfiguration (string ssid, string password, bool useEncryption)
		{
			MonoBrickFirmware.Native.ProcessHelper.RunAndWaitForProcess("rm",WpaSupplicantFileName); 
			string encryption;
			if(useEncryption)
				encryption = "WPA-PSK";
			else
				encryption = "NONE";	             
			string[] lines = { 
				"#This file is auto generated by MonoBrick - will be overwritten at startup", 
				"#ap_scan=1", 
				"#fast_reauth=1",
				"# Pers", 
				"ctrl_interface=/var/run/wpa_supplicant", 
				"network={", 
				"  ssid=\"" + ssid + "\"",
				"  key_mgmt="+encryption, 
				"  psk=\"" + password + "\"", 
				"  pairwise=CCMP TKIP",
				"  group=CCMP TKIP", 
				"}", 
			};
      		System.IO.File.WriteAllLines(@WpaSupplicantFileName, lines);
		}

You can find function in the firmware startup app found here. Would it be possible for you to extend/rewrite this function to support WEP and then test if it actually works?

Thanks

Anders

[Patrice Boucher]

Ok, I will take a look at it.
Probably during the holidays.

• This reply was modified 10 years ago by Patrice Boucher.

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