[yocto] How to add support for "usb WIFI dongle"?

[Jerry Lian]

Thanks Alan, I follow your instruction and it works eventually!

But I got another question:

   - I am using official Raspberry-PI WIFI dongle (BCM43143)
   - I configure kernel so that driver "brcm80211" is enabled, however,
   WIFI is not working.
   - Then I add driver "ipw2x00", then WIFI works.
   - So my question, why do we need both "ipw2x00" and "brcm80211" for
   official Raspberry-PI WIFI dongle?
   - (Sometimes the WIFI dongle works if I add drivers: "brcm80211,
   iwlwifi, rt2x00", without "ipw2x00", so I am really confused!)

Thanks!







On Tue, Nov 21, 2017 at 12:04 PM, Alan Martinovic <alan.martinovic at senic.com
> wrote:

> Some hints on where to start at:
>
> > What should I do to add support for "usb WIFI dongle"
>
> Am guessing the dongle works with Raspbian or id gets detected
> once you plug it into a desktop Linux machine.
> Once you do that type:
>
>     dmesg
>
> And it will list the kernel modules related to your dongle.
> You can use those buzzwords to google for what does
> enabling the dongle actually translates to in terms of kernel config.
>
> After that (depending what linux you're using) figure out how to
> run menuconfig. It might be something like:
>
>     bitbake your-kernel-package-name -c menuconfig
>
> and try checking out the boxes that you found out
> might be relevant to your wifi dongle.
> Save it, build the image, and see if it got you somewhere.
>
>
>
>
>
>
>
> On Tue, Nov 21, 2017 at 5:32 PM, Jerry Lian <jerry.lian at gmail.com> wrote:
> > I am confused on adding support for "usb WIFI dongle":
> > * My boards do NOT have WIFI capability, so I will add a "usb WIFI
> dongle".
> >   (I have two boards: Raspberri-PI-2, SIMATIC IOT-2020)
> > * Suppose we start from "core-image-sato"
> > * What should I do to add support for "usb WIFI dongle"
> > * After we build/boot the image, how can we verify and bring the WIFI up?
> >
> > Thanks!
> > Jerry
> >
> > --
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> >
>
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