From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wi0-f169.google.com (mail-wi0-f169.google.com [209.85.212.169]) (using TLSv1 with cipher RC4-MD5 (128/128 bits)) (Client CN "smtp.gmail.com", Issuer "Google Internet Authority" (verified OK)) by huchra.bufferbloat.net (Postfix) with ESMTPS id 965FC20024C for ; Mon, 12 Mar 2012 20:16:59 -0700 (PDT) Received: by wibhm17 with SMTP id hm17so4048709wib.4 for ; Mon, 12 Mar 2012 20:16:57 -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=S79ofQ7boa3KDUkikilVUMaywMgQSqOD9S9MRw63Tfs=; b=gO/7SqRdCL5WrwSbVZbzme5jptY5pR0k7+Zf956TfMHvtwunkfFhsd/KzWuRC5pDmz mo/Nh1i9m3FhTk5UHJe7VIY6+fdZLgUDGGKlSMpHmYTfkWNd3TSkF97/GDpCnqVOwiA7 7EDewOhzXl6S2rr8STDcKljmNoUMarzhExrF3P4N7xckWv2PdNV9XPn9GijMXKDw8C3c d+45FCh+IPtirWwTBJNPEcOIHjtRWOwpYKgVpV7r3UhJXK8Hi5Hg551SLrNCwuuu8lpd ucUWQznSVoAkPIsQfUyxqrZAuNtxUZ9T9vPpHoPSq7fSBc2d+q6Ifb2IFLNkRRJy2lx7 so7w== MIME-Version: 1.0 Received: by 10.180.96.228 with SMTP id dv4mr1222527wib.14.1331608617573; Mon, 12 Mar 2012 20:16:57 -0700 (PDT) Received: by 10.223.151.8 with HTTP; Mon, 12 Mar 2012 20:16:57 -0700 (PDT) In-Reply-To: References: <20120312210345.GC17357@thyrsus.com> <20120312212608.GC17895@thyrsus.com> <20120312213946.GE17895@thyrsus.com> <20120312224546.GA18404@thyrsus.com> <4F5EB328.5050301@c3energy.com> <4F5EB83E.3080602@c3energy.com> Date: Mon, 12 Mar 2012 20:16:57 -0700 Message-ID: From: Dave Taht To: Chris Kuethe Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable Cc: thumbgps-devel@lists.bufferbloat.net Subject: Re: [Thumbgps-devel] Build vs. modify vs. what should we be doing anyway? 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, 13 Mar 2012 03:17:00 -0000 On Mon, Mar 12, 2012 at 8:06 PM, Chris Kuethe wrot= e: > On Mon, Mar 12, 2012 at 20:04, Dave Taht wrote: >> On Mon, Mar 12, 2012 at 8:00 PM, Ron Frazier (NTP) >> hmm.. Anyone know anything about this puppy? >> >> http://www.u-blox.com/en/gps-chips/timing-a-raw-data-chip/ubx-g6010-st-t= m.html > > Well, if it's anything like other ublox receivers it'll be pretty good > for timing. > > I'm glad we still have docs for earlier devices: "The UBX-G6010-ST > Data Sheet, Hardware Integration Manual, and Receiver Description > Including Protocol Specification require an NDA and can be obtained by > contacting u-blox" I've read up a lot of this chips features, it has 12Mbit usb onboard, also spi, this was some info on the timing stuff.... https://www.u-blox.com/images/downloads/Product_Docs/Timing_AppNote_%28GPS.= G6-X-11007%29.pdf wish I knew how much it was... not clear to me just how much usb there is to the usb - is additional glue/firmware/cpu neeeded? >>> On 3/12/2012 10:42 PM, Chris Kuethe wrote: >>>> >>>> On Mon, Mar 12, 2012 at 19:38, Ron Frazier (NTP) >>>> =A0wrote: >>>> >>>>> >>>>> I think configuration data should be stored in flash. =A0That way ext= ended >>>>> power off periods are not a problem. >>>>> >>>>> My BU-353 has a supercap. =A0That's better than a battery that I migh= t have >>>>> to >>>>> replace, or possibly couldn't replace. =A0But I don't like knowing th= at, if >>>>> I >>>>> unplug it for a week, I'm going to have to reprogram it. >>>>> >>>> >>>> See, I wouldn't mind losing the config after a few hours without >>>> power. At least that way you have a way to reset the serial port when >>>> it gets hopelessly confused - a situation known to gpsd as the >>>> bluetooth problem. I like the idea of onboard flash, which is why I went looking for the atmel. Although sparkfun lists it as obsolete, I don't see an obvious replacement from atmel.... And a supercap to stay alive as long as possible. I think I've done enough damage to the potential pricepoint for one day... --=20 Dave T=E4ht SKYPE: davetaht US Tel: 1-239-829-5608 http://www.bufferbloat.net