From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-ob0-f171.google.com (mail-ob0-f171.google.com [209.85.214.171]) (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 88F6B200252 for ; Sat, 24 Mar 2012 08:22:36 -0700 (PDT) Received: by obhx4 with SMTP id x4so6148167obh.16 for ; Sat, 24 Mar 2012 08:22:35 -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; bh=P6ItZA+UF579zzEmbZTrEr+Vrr/W61sAERYcIzEfzro=; b=EaTQvHLCNoTsY3ozwPBv4QQb2D2xLDXQ7ERvu7ow/1BrMepm4hdp88F94jertTcAtc 5ldp7pmMO+L/y3tzU1GMl0Bg4qrbO1HiAG61OojlaQNpaUaPdfdeuVJDQwozHYn74gYe M1BUR4zpOHRf3gJEj+ZDmGv/IhlS5uTBBhiKkQYsVD9lnAv/LGsPa7Putrx9ctM52Tyy 4pbMW4NGxSqBzwlyDqoYIePc6d4O5dAZJPW48tjf5WByBvLzcH4REmxgZu1/SMxWmarC GkbxSmlzlT+PDI8E5atps6IZicAx3OAEDL3KBQrG8LwncMlG0hQEP+fiFChVhpsz3t8Y 1Vew== MIME-Version: 1.0 Received: by 10.60.29.39 with SMTP id g7mr20736669oeh.6.1332602555427; Sat, 24 Mar 2012 08:22:35 -0700 (PDT) Received: by 10.182.7.8 with HTTP; Sat, 24 Mar 2012 08:22:35 -0700 (PDT) Received: by 10.182.7.8 with HTTP; Sat, 24 Mar 2012 08:22:35 -0700 (PDT) In-Reply-To: <4F6D3E94.4080902@c3energy.com> References: <4F6CE652.2010309@c3energy.com> <4F6D285C.1070505@c3energy.com> <4F6D3E94.4080902@c3energy.com> Date: Sat, 24 Mar 2012 11:22:35 -0400 Message-ID: From: tz To: "Ron Frazier (NTP)" Content-Type: multipart/alternative; boundary=e89a8ff25632f16a7604bbfeb5c1 Cc: "thumbgps-devel@lists.bufferbloat.net" , questions@lists.ntp.org Subject: Re: [Thumbgps-devel] YEA! My Sure Electronics GPS just arrived. 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: Sat, 24 Mar 2012 15:22:36 -0000 --e89a8ff25632f16a7604bbfeb5c1 Content-Type: text/plain; charset=ISO-8859-1 The skytraq EVBs (direct from skytraq) all use the SiLabs chip - you cannot plug more than one in at a time under XP. It won't enumerate the second as a com port and it confuses everything. On Mar 23, 2012 11:25 PM, "Ron Frazier (NTP)" < timekeepingntplist@c3energy.com> wrote: > Hi all, > > I just discovered an interesting thing about the Sure board's serial - USB > converter. I went ahead and installed the driver. With this serial - USB > converter, which is a Silicon Labs CP210x chipset, no matter which USB port > I plug it into, it becomes COM6, which was the next one available. With > the Prolific based devices, including the TU-S9 and the BU-353, each > subsequent USB port I plug into becomes a new com port, so those devices > became COM3, COM4, and COM5 respectively as I plugged them into succeeding > USB ports. I can see pros and cons either way. > > With the Prolific way, if I move the device to a different port, I have to > have a different setup in the ntp.conf file, although you could probably > have multiple setups, and if nothing is attached to a given port, then it > gets ignored. > > With the Silicon Labs way, I only have to have one set of configuration > options in ntp.conf. However, what happens if I plug in another device > with the same chipset? I'm assuming the next one will become COM7. But, > now, if I unplug both and plug them back into the same ports, but in the > opposite sequence, I'll bet the original 1st device will now be COM7 and > the original 2nd device will be COM6. I can see how this would cause some > problems. > > I have not tested yet whether this board's USB port has a built in driver > in Linux. > > Sincerely, > > Ron > > > > -- > > (PS - If you email me and don't get a quick response, don't be concerned. > I get about 300 emails per day from alternate energy mailing lists and > such. I don't always see new messages very quickly. If you need a > reply and have not heard from me in 1 - 2 weeks, send your message again.) > > Ron Frazier > timekeepingdude AT c3energy.com > > ______________________________**_________________ > Thumbgps-devel mailing list > Thumbgps-devel@lists.**bufferbloat.net > https://lists.bufferbloat.net/**listinfo/thumbgps-devel > --e89a8ff25632f16a7604bbfeb5c1 Content-Type: text/html; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable

The skytraq EVBs (direct from skytraq) all use the SiLabs chip - you can= not plug more than one in at a time under XP.=A0 It won't enumerate the= second as a com port and it confuses everything.

On Mar 23, 2012 11:25 PM, "Ron Frazier (NTP= )" <timekeepingn= tplist@c3energy.com> wrote:
Hi all,

I just discovered an interesting thing about the Sure board's serial - = USB converter. =A0I went ahead and installed the driver. =A0With this seria= l - USB converter, which is a Silicon Labs CP210x chipset, no matter which = USB port I plug it into, it becomes COM6, which was the next one available.= =A0With the Prolific based devices, including the TU-S9 and the BU-353, ea= ch subsequent USB port I plug into becomes a new com port, so those devices= became COM3, COM4, and COM5 respectively as I plugged them into succeeding= USB ports. =A0I can see pros and cons either way.

With the Prolific way, if I move the device to a different port, I have to = have a different setup in the ntp.conf file, although you could probably ha= ve multiple setups, and if nothing is attached to a given port, then it get= s ignored.

With the Silicon Labs way, I only have to have one set of configuration opt= ions in ntp.conf. =A0However, what happens if I plug in another device with= the same chipset? =A0I'm assuming the next one will become COM7. =A0Bu= t, now, if I unplug both and plug them back into the same ports, but in the= opposite sequence, I'll bet the original 1st device will now be COM7 a= nd the original 2nd device will be COM6. =A0I can see how this would cause = some problems.

I have not tested yet whether this board's USB port has a built in driv= er in Linux.

Sincerely,

Ron



--

(PS - If you email me and don't get a quick response, don't be conc= erned.
I get about 300 emails per day from alternate energy mailing lists and
such. =A0I don't always see new messages very quickly. =A0If you need a=
reply and have not heard from me in 1 - 2 weeks, send your message again.)<= br>
Ron Frazier
timekeepingdude AT c3ener= gy.com

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