From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-we0-f171.google.com (mail-we0-f171.google.com [74.125.82.171]) (using TLSv1 with cipher RC4-SHA (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 2529D200681 for ; Mon, 26 Mar 2012 17:53:47 -0700 (PDT) Received: by werm1 with SMTP id m1so8373261wer.16 for ; Mon, 26 Mar 2012 17:53:45 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:date:message-id:subject:from:to:content-type; bh=y4f5atVgo+e7ZDRyHuO08knYyF6LJEKAejnFfr7t4Qg=; b=GMckES52txmktWy8DI8uM8QtSn6+QTP8yJ8UB9j4RLC8mShmh+feJpE/hd7vZ0aUtZ kHswSHEGudQS3inkcHZrK9oeBQJaQZDTeOS3nNAkspc3noBfwQch4Pv7z9egpGpCleaV BIE5JGzt79G1i1ccXlThmaikEfmzwSbSPb6kZSCNsCdUtxvzHN8YRuSQE0iKE48DDHKD hQqQX/PqKKVMPUKVO1s1rcqPFtxadz0n4unXY2GAcrQCZxCFuBxfndNlBV252jcvbH9C GVYyGnZB6OkvNdftE1+YMmH+orpDwu/VlgGXpy/qrJGv/mZYi79F/5I6jzxF2LHoGEuP S/kw== MIME-Version: 1.0 Received: by 10.180.101.230 with SMTP id fj6mr23024404wib.13.1332809625654; Mon, 26 Mar 2012 17:53:45 -0700 (PDT) Received: by 10.223.127.194 with HTTP; Mon, 26 Mar 2012 17:53:45 -0700 (PDT) Date: Mon, 26 Mar 2012 17:53:45 -0700 Message-ID: From: Dave Taht To: thumbgps-devel@lists.bufferbloat.net Content-Type: multipart/alternative; boundary=f46d0442879e4a547004bc2eec0d Subject: [Thumbgps-devel] in search of a better microcontroller X-BeenThere: thumbgps-devel@lists.bufferbloat.net X-Mailman-Version: 2.1.13 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Tue, 27 Mar 2012 00:53:48 -0000 --f46d0442879e4a547004bc2eec0d Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Since 'plain jane' is coming along nicely, I've been amusing myself with what it would take to do 'sexy sadie' (not my final choice for a name btw!) I wanted to combine at least two functions into the usb stick, they would be: * gps/time with supercap backup * other sensor support (wind cups, precipitation, barometer, etc) * some sort of direct output signal (can bus? spi bus? don't know yet) * randomness/entropy generator While my initial choice for the former two features would be the ublox device already discussed, I haven't pursued the possibility of being able to modify their firmware to do what I want. I should contact them I guess... but I'm wagering that gaining access to that firmware will be difficult, so interfacing with a cheaper gps device (e.g plaine jane) and adding a microcontroller to it seems like the best option. The problem is I'd like to find something capable of 480Mbit transfers. The first microcontroller I picked (the atmel) seems to be near end of life and only does 12Mbit, so I went looking for the sexy and new (a lot of those!), and stumbled across this one: http://media.freescale.com/phoenix.zhtml?c=3D196520&p=3Dirol-newsArticle_pr= int&ID=3D1671968&highlight=3D I couldn't help but laugh when I saw: "Linear 4 GB address space that removes the need for paging, reducing software complexity and ensuring a more 8-bit-like user experience" Yea, that 8 bit-like user experience. That's what I want in a 32 bit 4GB capable architecture. The last phrase was removed from the official site later, after whoever wrote the pr release came down off of whatever he/she was smoking. http://www.freescale.com/webapp/sps/site/overview.jsp?code=3DKINETIS_L_SERI= ES&tid=3Dvan%20LSERIES This chip is WAY too new to consider using, but it is a sign of things to come. Still trying to find a sane 480Mbit USB interface that's under 10 bucks... --=20 Dave T=E4ht SKYPE: davetaht US Tel: 1-239-829-5608 http://www.bufferbloat.net --f46d0442879e4a547004bc2eec0d Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Since 'plain jane' is coming along nicely, = I've been amusing myself with what it would take to do 'sexy sadie&= #39;
(not my final choice for a name btw!)

I wanted to combine a= t least two functions into the usb stick, they would be:

* gps/time with supercap backup
* other sensor support (wind cups, p= recipitation, barometer, etc)
* some sor= t of direct output signal (can bus? spi bus? don't know yet)
* randomness/entropy generator

While my initial choice for the former two feature= s would be the ublox device already discussed, I haven't pursued the po= ssibility of being able to modify their firmware to do what I want. I shoul= d contact them I guess... but I'm wagering that gaining access to that = firmware will be difficult, so interfacing with a cheaper gps device (e.g p= laine jane) and adding a microcontroller to it seems like the best option.<= br>
The problem is I'd like to find something capable of 480Mbit transf= ers.

The first microcontroller I picked (the atmel) seems to be near= end of life and only does 12Mbit, so I went looking for the sexy and new (= a lot of those!), and stumbled across this one:

http://media.free= scale.com/phoenix.zhtml?c=3D196520&p=3Dirol-newsArticle_print&ID=3D= 1671968&highlight=3D

I couldn't help but laugh when I saw:

"Linear 4 GB addr= ess space that removes the need for paging, reducing software complexity and ensuring a more 8-bit-like user experience&= quot;

Yea, that 8 bit-like user experience. That's what I want i= n a 32 bit 4GB capable architecture.

The last p= hrase was removed from the official site later, after whoever wrote the pr = release came down off of whatever he/she was smoking.

http://www.freescale.com/webap= p/sps/site/overview.jsp?code=3DKINETIS_L_SERIES&tid=3Dvan%20LSERIES=

This chip is WAY too new to consider using, but it is a sign of things to c= ome. Still trying to find a sane 480Mbit USB interface that's under 10 = bucks...

--
Dave T=E4ht
SKYPE: davetaht
US Tel: 1-239-829-= 5608
http://www.bufferb= loat.net
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