port ecos to blackfin

[Martin Laabs]

Hi,

I have less experience with ecos but I (or maybe a
member of my group) will port eCos for the blackfin
dsp from Analog Devices.
Could you tell me how much time we will need (with
good basic knowledge in computer science) to port
it basicly?
With "good basic knowlege" I'd like to say that I know
whats a pipeline or memory mapped register, memory map
and so on. I also have experience in progamming assembler
and c at machine-level.
Maybe it's easier to estimate the number of codelines to
write.

Thank you
 Martin L.
 

--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

[Gary Thomas]

On Mon, 2005-11-14 at 23:17 +0100, Martin Laabs wrote:

> Hi,
>
> I have less experience with ecos but I (or maybe a
> member of my group) will port eCos for the blackfin
> dsp from Analog Devices.
> Could you tell me how much time we will need (with
> good basic knowledge in computer science) to port
> it basicly?
> With "good basic knowlege" I'd like to say that I know
> whats a pipeline or memory mapped register, memory map
> and so on. I also have experience in progamming assembler
> and c at machine-level.
> Maybe it's easier to estimate the number of codelines to
> write.

It's hard to give a time estimate for such work because this
really depends so much on the experience and calibre of the
people doing the work.  That said, porting eCos to a new
machine architecture is non-trivial and can take someone with
experience with eCos anywhere from 4-12 weeks (I've done a
number of these and those are representative costs).

Note: I'm not trying to make this sound like a huge task,
rather that there are lots of details to consider and get
correct and it simply takes time, often more than one might
wish.

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


--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

[Bob Amstadt]

I'm also interested in a possible Blackfin port of eCos.  A quick search
shows that people have asked about it, but I am wondering if anybody has
put any work into it?  I'm currently running uClinux on the Blackfin, but
eCos would be a much better match for my application.  Unfortunately, I
don't currently have the time to tackle porting eCos on my own, but I could
assist somebody that has started the project.

Bob Amstadt

--On Monday, November 14, 2005 4:02 PM -0700 Gary Thomas
<gary@...> wrote:

> On Mon, 2005-11-14 at 23:17 +0100, Martin Laabs wrote:
>> Hi,
>>
>> I have less experience with ecos but I (or maybe a
>> member of my group) will port eCos for the blackfin
>> dsp from Analog Devices.
>> Could you tell me how much time we will need (with
>> good basic knowledge in computer science) to port
>> it basicly?
>> With "good basic knowlege" I'd like to say that I know
>> whats a pipeline or memory mapped register, memory map
>> and so on. I also have experience in progamming assembler
>> and c at machine-level.
>> Maybe it's easier to estimate the number of codelines to
>> write.
>
> It's hard to give a time estimate for such work because this
> really depends so much on the experience and calibre of the
> people doing the work.  That said, porting eCos to a new
> machine architecture is non-trivial and can take someone with
> experience with eCos anywhere from 4-12 weeks (I've done a
> number of these and those are representative costs).
>
> Note: I'm not trying to make this sound like a huge task,
> rather that there are lots of details to consider and get
> correct and it simply takes time, often more than one might
> wish.
>
> --
> ------------------------------------------------------------
> Gary Thomas                 |  Consulting for the
> MLB Associates              |    Embedded world
> ------------------------------------------------------------
>
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

[Martin Laabs]

Hello,

On Thu, Nov 24, 2005 at 10:41:16PM -0800, Bob Amstadt wrote:

> I'm also interested in a possible Blackfin port of eCos.  A quick search
> shows that people have asked about it, but I am wondering if anybody has
> put any work into it?

We are a group of students who build a quadrocopter. (Helicopter with
4 rotors).
I'm responsible for the electronic data processing. At first
we wanted to use the Blackfin for all data processing. But now
we decidet to use LPC21xx (ARM) for atitude stabilisation. Later
we'll use the Blackfin as a 2nd processor for radio- and
imageprocessing.
Because we can afford only one processorboard at the moment
I regret not starting porting eCos to blackfin now.

But if you wait halve a year I'll try it. Until then I'm going to
get some experience with eCos on the ARM.


Best regards
 Martin Laabs


--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

[Bob Amstadt]

I suspect that will be around the time that I will have time available to
tackle the project.  So, perhaps we will be able to help each other.

--On Saturday, November 26, 2005 3:56 PM +0100 Martin Laabs
<martin.laabs@...> wrote:

> Hello,
>
> On Thu, Nov 24, 2005 at 10:41:16PM -0800, Bob Amstadt wrote:
>
>> I'm also interested in a possible Blackfin port of eCos.  A quick search
>> shows that people have asked about it, but I am wondering if anybody has
>> put any work into it?
>
> We are a group of students who build a quadrocopter. (Helicopter with
> 4 rotors).
> I'm responsible for the electronic data processing. At first
> we wanted to use the Blackfin for all data processing. But now
> we decidet to use LPC21xx (ARM) for atitude stabilisation. Later
> we'll use the Blackfin as a 2nd processor for radio- and
> imageprocessing.
> Because we can afford only one processorboard at the moment
> I regret not starting porting eCos to blackfin now.
>
> But if you wait halve a year I'll try it. Until then I'm going to
> get some experience with eCos on the ARM.
>
>
> Best regards
>  Martin Laabs
>
>
> --
> Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
> and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss

--
Before posting, please read the FAQ: http://ecos.sourceware.org/fom/ecos
and search the list archive: http://ecos.sourceware.org/ml/ecos-discuss