Re: testing and building for RPI

[Alexander Aring <alex.aring@gmail.com>]

Hi Michael,

On Sun, Jul 26, 2015 at 10:14:49PM -0400, Michael Richardson wrote:
> 
> Michael Richardson <mcr@sandelman.ca> wrote:
>     >> Please see the blog: https://honk.sigxcpu.org/piki/hw/rpi6lowpan/
> 
>     > I have some edits for this; mostly unfortunate typos or copy/pastes.
>     > I did get it working; my major stumbling block had to do with u-boot
>     > apparently not really sending out multiple DHCPs messages.
> 
>     > The first goes out, and if the network is truly ready, it works.
>     > Why wouldn't it be ready?  Cisco switches with STP enabled... plugging in a
>     > trusty 8-port 100Mb/s stupid switch solved the problem, but cross-over cable to my
>     > laptop showed me that it was really only sending out a single DHCP request,
>     > not 8.  Once I put the "boot.scr" in place, it seems to boot very reliably,
>     > but I haven't removed the 100Mb/s switch yet.
> 
>     > The suggested "agx" tree's defconfig didn't seem to enable the correct set of
>     > kernel CONFIG options for the AT86*, etc. I'll post my whole recipe when I'm
>     > back from the cottage.  You need to enable the IEEE802154, to then see
>     > MAC802154 (and enable it) options before you'll see the AT86 drivers
>     > available if you are using menuconfig.
> 
> After doing:
>       make ARCH=arm CROSS_COMPILE=arm-linux-gnueabihf- bcm2835_defconfig
> 
> I had to enable:
> CONFIG_6LOWPAN=y
> CONFIG_6LOWPAN_NHC=y
> CONFIG_6LOWPAN_NHC_DEST=y
> CONFIG_6LOWPAN_NHC_FRAGMENT=y
> CONFIG_6LOWPAN_NHC_HOP=y
> CONFIG_6LOWPAN_NHC_IPV6=y
> CONFIG_6LOWPAN_NHC_MOBILITY=y
> CONFIG_6LOWPAN_NHC_ROUTING=y
> CONFIG_6LOWPAN_NHC_UDP=y
> CONFIG_IEEE802154=y
> CONFIG_IEEE802154_SOCKET=y
> CONFIG_IEEE802154_6LOWPAN=y
> CONFIG_MAC802154=y
> 
> CONFIG_IEEE802154_FAKELB=y
> CONFIG_IEEE802154_AT86RF230=y
> CONFIG_IEEE802154_MRF24J40=y
> CONFIG_IEEE802154_CC2520=y
> 
> and then I had a kernel that saw my at86 device.  (I'm sure that the CC2520
> and MRF24J40 enable was gratuitous).
> 

congratulation. :-)

> I haven't yet interoperated with contiki; just ran out of time.
> 

Okay, I see also you use a builtin CONFIG_IEEE802154_FAKELB, this module
generates two virtual phys which can "transmit <-> receive" some data
between them - if the page/channel setting are the same. This module
will register two phys by default.

It's just a note, that you might have 3 phys registered.

- Alex