Hello,

My goal is to make a 16 channel fixed RFID reader with DSP.
But I don't really know what controller to use.
I will be using the ISO 11785 standard. The HDX transponder uses FSK
modulation, 124.2 kHz is logical "1" and 134.2 kHz is logical "0".
Questions are how fast do I want the cpu to be, do need a fpu? etc.
I need a 16 channel ADC, so preferably a controller instead of a
processor.
If you need more info, please ask me.

Is there anyone out there who can help me choose the right one?

dsp_questions wrote:

Hello,

My goal is to make a 16 channel fixed RFID reader with DSP. But I don't
really know what controller to use. I will be using the ISO 11785
standard. The HDX transponder uses FSK modulation, 124.2 kHz is logical
"1" and 134.2 kHz is logical "0". Questions are how fast do I want the
cpu to be, do need a fpu? etc. I need a 16 channel ADC, so preferably a
controller instead of a processor.
If you need more info, please ask me.

Is there anyone out there who can help me choose the right one?

This is going to be rather fat DSP with expensive ADC. You would be
better off if you change the approach. Use the simple hardware to
downconvert/demodulate, then sample the signal into a microcontroller.

For a lot of applications this would definitely be the way to go. For

Hello,

My goal is to make a 16 channel fixed RFID reader with DSP.
But I don't really know what controller to use.
I will be using the ISO 11785 standard. The HDX transponder uses FSK
modulation, 124.2 kHz is logical "1" and 134.2 kHz is logical "0".
Questions are how fast do I want the cpu to be, do need a fpu? etc.
I need a 16 channel ADC, so preferably a controller instead of a
processor.
If you need more info, please ask me.

Is there anyone out there who can help me choose the right one?

Thank you,

M

"dsp_questions" <mariusfrielink at (no spam) gmail.com> wrote in
news:z5Sdnc_sIK9xlTzXnZ2dnUVZ_gCdnZ2d at (no spam) giganews.com:

Hello,

My goal is to make a 16 channel fixed RFID reader with DSP. But I don't
really know what controller to use. I will be using the ISO 11785
standard. The HDX transponder uses FSK modulation, 124.2 kHz is logical
"1" and 134.2 kHz is logical "0". Questions are how fast do I want the
cpu to be, do need a fpu? etc. I need a 16 channel ADC, so preferably a
controller instead of a processor.
If you need more info, please ask me.

Is there anyone out there who can help me choose the right one?

Thank you,

M



If you mux the front end, you could use a modern SHARC with its PDAP
(fifo) input. Our dspblok 21369zx would be one choice.

We also have DSP-FPGA solutions but I don't think you will need the FPGA
for downsampling.

Perhaps you could just undersample the inputs (as long as the input S/H
is fast enough).

And what about the Freescale MC56F8006, has two 24 channel adc's. Probably
also not very accurate, but I don't really need that for FSK, I need
frequency not amplitude.

Anyone used this device before?
And what about the development software from Freescale, seems very
expensive?

irony (say I-ron-ee) noun (plural ironies)
1. saying the opposite of what you mean in order to emphasize it, e.g.
saying ‘What a lovely day’ when it is pouring with rain.

Jimmy J wrote:

...

irony (say I-ron-ee) noun (plural ironies)
1. saying the opposite of what you mean in order to emphasize it, e.g.
saying ‘What a lovely day’ when it is pouring with rain.

Who would have guessed?
Jerry

STUPIDENT

Jerry is a retired engineer who isn't selling anything.

Jimmy J continues to make himself look silly

Richard Owlett <rowlett at (no spam) pcnetinc.com> wrote in news:n5GdncriuM-
ZLCXXnZ2dnUVZ_tednZ2d at (no spam) supernews.com:


Jimmy J continues to make himself look silly


Another retarded comp.dsp regular who, in lieu of a rational, legitimate
argument, settles for a pathetic ad-hominem swipe. Are there no regulars
in this newsgroup who aren't arrogant assholes with arrested social
development?

Richard Dobson<richarddobson at (no spam) blueyonder.co.uk> wrote in news:7c9vm.181253
$tD4.165830 at (no spam) newsfe07.ams2:

Jimmy J wrote:
.

Experience also tells that this place is not so good for looking for a
DSP consultant.
Perhaps logic might have told you that earlier and saved all the aggro.
As someone said here not so long ago "nobody gives away the good stuff
for free". It's primarily a place to, um, discuss, not buy and sell
(except in the minds of spammers). A few regulars who are manufacturers
do mention their products, most unobtrusively (in the form of "we have
this, contact us privately if you are interested"), but nobody would
expect any discussions or negotiations to take place over a usenet list!
It seems to me that the normal course of action to find a consultant
is to use one's existing list of contacts (people who know people who
know people); check out the known companies (and indeed academic
institutions) in the area, the odd trade show or conference, and so
forth. And make private confidential inquiries of individuals etc. Find
someone to have a beer with. I would have thought as a matter of
principle that usenet is the ~last~ place to look, rather than the
first. I do not recall you announcing yourself as a potential employer
until well after the subject of this thread had totally evaporated.

Of course if you are sufficiently isolated as to not actually have any
industry or other contacts, you have a much harder job ahead than
anything which can be solved via usenet!

Richard Dobson


I could write a dissertation in response to your reply and still not
scratch the surfaces of the numerous issues that you raised. As a sensible
alternative, let me simply say that while I agree in very general terms
with much of what you have said, when it comes to the specifics, I disagree
with most of what you have said.

In an attempt at setting the record straight, and to avoid the possibility
of any further misunderstanding, let me state that the arrogant,
condescending and rude initial reception that I received from so-called
professional DSP consultants is only the foundation of my outrage. My real
outrage is over the subsequent posts in which several of the regulars in
this newsgroup not only failed to object to the disgraceful conduct of
these so-called professional DSP consultants, but instead actually condoned
and encouraged it.

The disgracefou conduct of these so-called professional
DSP consultants would never be tolerated in any accademic or work-relatied
environment.

In fact, it wouldn't even be an issue with me if it were not
for the fact that in their posts these individuals are openly advertising
themselves as professional (implied) DSP consultants.

Eric Jacobsen<eric.jacobsen at (no spam) ieee.org> wrote in
news:XS9vm.7$kC.5 at (no spam) newsfe11.iad:

On 9/25/2009 12:32 PM, Jimmy J wrote:
Eric Jacobsen<eric.jacobsen at (no spam) ieee.org> wrote in
news:0f4vm.107127$Y83.65735 at (no spam) newsfe21.iad:

I've not seen any evidence that he's in a position to hire anyone,
anyway. It seems to me he wields the "I wouldn't hire you" stick
merely as a way to try to exert some influence. I suspect he's a
student somewhere.

Wrong on all three counts....quite an accomplishment.
Congratulations. Obviously the IEEE has either significantly lowered
its standards in recent years, or has abandoned them altogether.
There's no evidence that I'm wrong about anything. There's plenty of
evidence that you not only have no $$ to apply to the problem,

Claims of evidence don't constitute evidence. Put your so-called evidence
on the table or put a sipper on your big mouth.

Time for a reality check, moron? If I had all of the requisite DSP skills,
I wouldn't have come here for help/advice in the first place. As for your
mindless, idiotic and totally baseless allegation, this isn't the first
problem that I have managed/solved and it certainly won't be the last one.

BTW, your scary discernment skills have failed to recognize that a lot
of the genuine DSP practicioners here are likely to be IEEE members.
There isn't any particular skill test to become an IEEE member much
beyond the ability to pay the dues, so your assessment of the presence
or absence of IEEE membership standards just reveals that you don't
have much of an idea about the industry at all.

Quite the contrary. The implication was that the quality of IEEE members
has clearly taken a noisedive into the toilet. Sorry you missed the point.

You're not really fooling anybody. You are, however, entertaining
some of us quite a bit.


Take a look in the mirror, moron, because not only are you a willing
participant in providing the entertainment to which you refer, the laugh is
actually on you.

Keep at it, though. Eventually your berating of the experts whose
help you seek w pay off. I'm sure of it. It's a time-proven
technique.


It already has...and in spades. If I accidentally find myself driving down
a street that is full of pot holes, I get off that street and take another
route to my destination.

I also bet that someday when a manager fails to give you a big
enough
raise that you can correct the situation by letting him know how
incompetent he is for not recognizing your genius.

My advice to an obvious mental retard like you is to stay away from
from the horse races, the lotteries and the casinos.

Vladimir Vassilevsky <nos... at (no spam) nowhere.com> wrote innews:jcednZ_xlOpfSiHXnZ2dnUVZ_oednZ2d at (no spam) giganews.com:

JJ is either frustrated stupident looking for
homework or a madman obsessed with genious idea.

Or someone who was handed a real-world problem looking for a creative
solution.  Thanks to you and other arrogant assholes in this newsgroup, I
certainly know where the solution, creative or otherwise, is not likely to
be found.