From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-vb0-f43.google.com (mail-vb0-f43.google.com [209.85.212.43]) (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 B4E47200A28 for ; Tue, 27 Mar 2012 07:29:17 -0700 (PDT) Received: by vbbfq11 with SMTP id fq11so7553252vbb.16 for ; Tue, 27 Mar 2012 07:29:16 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=mime-version:in-reply-to:references:date:message-id:subject:from:to :cc:content-type:content-transfer-encoding; bh=0DUuBBMFOAkhRzg/6L3m9n//qfZNbZUU77qoZDjD3tI=; b=OE5gVdtWbqsTFI5wQpNK6a+XbHAj9Q42ptyKRX5fQA9It3YhVJtD6fSlQl1PKylglt /8q8xXGIXgXPmjzYgOiO/H24KPpMIPeZk1XMWR7d13Wci9/qJQ5DiYM9et0jNjtpHdDZ 2fcZCQLGr2iNq1/yZrU8Cihc+fvoHP5Yxk1Dr0l2+V+IEaEvCKaX/NcBuLUDEuGqY55O oBQI6VPO3b8ucWcmO+j2yaWrXmoGoM+kdGz12F80vr6gicc9f0xUspaKY5uAFYTOieWw EWcbz6n2iyIdsUC5GfFv6bOmyDBR5yrI1kMnT6ubNKYOe+H1jhD5SJeYI7mdwDlNtbmG i0jg== MIME-Version: 1.0 Received: by 10.52.93.179 with SMTP id cv19mr10081484vdb.103.1332858556314; Tue, 27 Mar 2012 07:29:16 -0700 (PDT) Received: by 10.220.140.132 with HTTP; Tue, 27 Mar 2012 07:29:16 -0700 (PDT) In-Reply-To: References: Date: Tue, 27 Mar 2012 09:29:16 -0500 Message-ID: From: Patrick Maupin To: Dave Taht Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: thumbgps-devel@lists.bufferbloat.net Subject: Re: [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 14:29:19 -0000 I like the LPC3131. It has enough internal memory to run Nuttx as well. The only problem is it's hard to prototype because it's BGA only. But Olimex has a cheap dev board. Pat On Mon, Mar 26, 2012 at 7:53 PM, Dave Taht wrote: > 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 li= fe > 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_= print&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_SE= RIES&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... > > -- > Dave T=E4ht > SKYPE: davetaht > US Tel: 1-239-829-5608 > http://www.bufferbloat.net > > _______________________________________________ > Thumbgps-devel mailing list > Thumbgps-devel@lists.bufferbloat.net > https://lists.bufferbloat.net/listinfo/thumbgps-devel >