Linux/PROCESSOR-SDK-AM335X: No wifi drivers?

Natan Keddem

Prodigy 245 points

Part Number: PROCESSOR-SDK-AM335X
Other Parts Discussed in Thread: WL1837MOD

Tool/software: Linux

Hello,

I am using a BeagleBone Black with the element 14 wifi cape (WL1837MOD) and the latest SDK:

ti-processor-sdk-linux-am335x-evm-04.00.00.04-Linux-x86-Install.bin

I installed the SDK and ran create_sdcard.sh. I then followed the procedure to patch and copied the new .dtb file to the boot directory here:

http://processors.wiki.ti.com/index.php/WL18xx_Platform_Integration_Guide#Appendix_A:_Device_Tree_file_-_patching_and_updating

I then found there are no files\directories\symlinks in the /sys/class/ieee80211/ directory so my command to bring up the wifi fails:

root@am335x-evm:~# iw phy `ls /sys/class/ieee80211/` interface add wlan1 type managed
command failed: No such file or directory (-2)
root@am335x-evm:~# cd /sys/class/ieee80211/
root@am335x-evm:/sys/class/ieee80211# ls
root@am335x-evm:/sys/class/ieee80211#

I did the same thing on the previous sdk version and I don't remember having to do anything special with the configs or other settings to get things working. Any Ideas? Thanks.

over 8 years ago

0 Dwarakesh Radhakrishnan over 8 years ago

Guru 13660 points

Hi Natan,

Ma I know what you are trying to do ? Are you trying to find the interface to bring it up ? What was the success case in the older sdk ?

0 Natan Keddem over 8 years ago in reply to Dwarakesh Radhakrishnan

Prodigy 245 points

The goal would be to run my BBB as a wifi AP something similar to:
processors.wiki.ti.com/.../WiLink8_WLAN_Demo:_Linux
The scripts used in this example initialize the wifi ap by using:
iw phy `ls /sys/class/ieee80211/` interface add wlan1 type managed

Which fails...

0 Dwarakesh Radhakrishnan over 8 years ago in reply to Natan Keddem

Guru 13660 points

Hi Natan,

You need to make sure WiFi driver is initialized and up. I am not sure if this entry is removed, but ifconfig -a could provide you the wlan interface available. Also check in dmesg if there is any failure or difference related to WiFi initialization, compared to the older document.

0 Natan Keddem over 8 years ago in reply to Dwarakesh Radhakrishnan

Prodigy 245 points

I can tell you that at boot up the older SDK prints a number of wlcore and cfg80211 messages. The newer SDK doesn't seem to do it. I repeat my original question have wifi drivers been disabled in the latest SDK? If so how would I enable them? Has anyone actually gotten what I am trying to do to work? I am not really breaking new ground here just using the SDK precompiled images...

0 Steve Kipisz over 8 years ago in reply to Natan Keddem

TI__Genius 15510 points

I looked and the drivers and firmware are in the file system. I'm not sure why they are not loading.

Steve K.

0 Natan Keddem over 8 years ago in reply to Steve Kipisz

Prodigy 245 points

Are drivers loading correctly for you at boot?

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Linux/PROCESSOR-SDK-AM335X: No wifi drivers?