Fwd: Buildroot -- was Resources for Linux SocketCAN

> That's the one.  It is an environment that will centralize all the tasks you
need deploying Linux on an embedded device
- cross toolchain
- kernel + modules
- root filesystem + packages
- adapted bootloader
Pretty straightforward to use, and it allows you to focus on your board
rather than everything else you need to maintain as well.


Sounds good Bram.. i will try it for RPi.... :-)

Regards,

Dinesh

On 2/6/13, Bram Kerkhof <[email protected]> wrote:
> That's the one.  It is an environment that will centralize all the tasks
> you
> need deploying Linux on an embedded device
> - cross toolchain
> - kernel + modules
> - root filesystem + packages
> - adapted bootloader
>
> Pretty straightforward to use, and it allows you to focus on your board
> rather than everything else you need to maintain as well. So now I just
> need
> to figure out how to get a can4linux package with support for the i.MX25 on
> there :)
>
> cheers,
> Bram
>
> -----Original Message-----
> From: [email protected]
> [mailto:[email protected]] On Behalf Of Dinesh
> Guleria
> Sent: woensdag 6 februari 2013 8:30
> To: CANLIST
> Subject: Re: [CANLIST] Resources for Linux SocketCAN
>
> Thanks for replying   Heinz.
>
>>>  ideally it should be a neat and tidy
>> buildroot package for my target platform (iMX25@400Mhz), and play nice
>> with Crosstool-NG.
>
> Are you telling about, following buildroot ?
> http://buildroot.uclibc.org/
>
> Actually i have worked with crosstool-NG made made my cross toolchain.
> And used raspbian rootfile system for the development along with
> Scrathbox2 & QEmu.
>
> What exactly Buildroot is capable to do ? Means it requires rootfile-system
> from the vendor or it is capable to create Kernel & rootfile system for us.
> Haven't worked with it ?
>
> Regards,
>
> Dinesh
>
> On 2/6/13, Heinz-Jürgen Oertel <[email protected]> wrote:
>> Hello Dinesh,
>>
>> Am Freitag 01 Februar 2013, 12:12:07 schrieben Sie:
>>> Hi,
>>>
>>> Suppose there is 20 different messages in the common tx queues for a
>>> device from suppose 4 processes.
>>> My question is does SocketCAN & CAN4Linux supports message priority
>>> based transmission, or it is just FIFO.
>> can4linux has only one TX Fifo (yet).
>> There was no need to having priority based queues.
>> It should not be to difficult to add such a feature.
>> A bit more difficult would be to stop transmission of a low priority
>> frame and schedule a higher prior one for transmission.
>>
>> I can not speak for SocketCAN, but think they have plans for it.
>>
>>>
>>> >> Each receiving process needs its on receive queue for example and
>>> >> memory
>>> for it. To mange this, at compile time yo define
>>> -DCAN_MAX_OPEN=4 in the Makefile to allow, in this example, four
>>> processes to open one physical device at the same time.
>>> Queue size too is a compile time constant.
>>
>> This is correct. We prefer this static assign of resources.
>>>
>>> [skip more ...]
>>
>> Regards
>>   Heinz
>> --
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