[yocto] [meta-raspberrypi] WiFi

Gary Thomas gary at mlbassoc.com
Thu Sep 15 06:56:59 PDT 2016


On 2016-09-15 15:32, Daniel. wrote:
> Garry, if you are facing problems posting and detailed description of
> your problem and by detailed I mean "I do X expecting Y but got Z"
> being Z errors, logs, outputs etc would help a lot people to help you.

A reasonable observation (although if you look through the records for
the past ~10 years, you can see that I know how to pose relevant questions!)
I'm sure that the answer will be obvious to anyone who has set up a RaspberryPi-3.

Anyway, for completeness, when my Rpi-3 board boots, I get a ton of these messages from the kernel:
[    8.737220] cfg80211: Calling CRDA to update world regulatory domain

Also, whenever I try to do anything with the WiFi device, I get this error:
   root at raspberrypi3:~# iw dev wlan0 scan
   command failed: Network is down (-100)

Here are the modules loaded into the kernel:
   root at raspberrypi3:~# lsmod
     Not tainted
   ipv6 343600 26 [permanent], Live 0x7f1f6000
   joydev 9044 0 - Live 0x7f1f0000
   evdev 10254 3 - Live 0x7f1e2000
   brcmfmac 179873 0 - Live 0x7f16c000
   brcmutil 5693 1 brcmfmac, Live 0x7f160000
   cfg80211 416259 1 brcmfmac, Live 0x7f03a000
   rfkill 16941 1 cfg80211, Live 0x7f026000
   bcm2835_rng 1763 0 - Live 0x7f022000
   bcm2835_gpiomem 2852 0 - Live 0x7f01e000
   uio_pdrv_genirq 2944 0 - Live 0x7f012000
   uio 8032 1 uio_pdrv_genirq, Live 0x7f000000

Perhaps I'm missing some firmware or driver for this WiFi device?  Note: I had
this working fine on my RaspberryPi-2 with an external [USB] dongle.

-- 
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Gary Thomas                 |  Consulting for the
MLB Associates              |    Embedded world
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