[OE-core] What's the "proper" way to start WiFi networking?

[Mike Looijmans]

For boards that offer WiFi, I'd want them to connect more or less automatically.

I was wondering if there were better ways than handcrafting shell scripts to 
do this on a headless embedded board?



If I put wpa-conf into /etc/network/interfaces it works, but blocks booting 
for a long time if the wifi isn't there.


I've been using ifplugd combined with wired ethernet, and this also works fine 
with wireless. Once wpa-supplicant connects to an access point, the link 
reports up and DCHP can start.


Starting wpa_supplicant from the commandline runs fine:

/usr/sbin/wpa_supplicant -B -P /var/run/wpa_supplicant.wlan0.pid -i wlan0 -c 
/etc/wpa_topic.conf -D

However, putting this line into a startup script (/etc/rc5.d/...) hangs. It 
doesn't matter whether I start early or late, the wpa_supplicant just hangs 
and waits and doesn't fork into daemon mode like it should. Tried setting PATH 
and redirecting input, invoking through start-stop-daemon, but that didn't help.

Appending an ampersand to the command makes the boot continue, but 
wpa_supplicant doesn't work, it won't connect to the access point.




Kind regards,

Mike Looijmans
System Expert

TOPIC Products
Materiaalweg 4, NL-5681 RJ Best
Postbus 440, NL-5680 AK Best
Telefoon: +31 (0) 499 33 69 79
E-mail: mike.looijmans at topicproducts.com
Website: www.topicproducts.com

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