From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mout.perfora.net (mout.perfora.net [74.208.4.194]) by huchra.bufferbloat.net (Postfix) with ESMTP id 018F0200252 for ; Fri, 23 Mar 2012 20:25:20 -0700 (PDT) Received: from [192.168.83.5] (c-76-97-152-51.hsd1.ga.comcast.net [76.97.152.51]) by mrelay.perfora.net (node=mrus2) with ESMTP (Nemesis) id 0LzKVl-1SOMXk2Beb-014xAH; Fri, 23 Mar 2012 23:25:11 -0400 Message-ID: <4F6D3E94.4080902@c3energy.com> Date: Fri, 23 Mar 2012 23:25:08 -0400 From: "Ron Frazier (NTP)" User-Agent: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.1.9) Gecko/20100722 Eudora/3.0.4 MIME-Version: 1.0 To: questions@lists.ntp.org, "thumbgps-devel@lists.bufferbloat.net" References: <4F6CE652.2010309@c3energy.com> <4F6D285C.1070505@c3energy.com> In-Reply-To: <4F6D285C.1070505@c3energy.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit X-Provags-ID: V02:K0:+2v6vxMavwArQlSpcUVynkw1fVzwQ/elQIfAS2J6a2R 6Qe+lsL9mb28AzDEjpf6Ww97dyGgahdOwgei4SLpG3qsTkR2t4 Wv1R2KkdLKkZ9+WfyS0SzUdvo/GYCAD9A93h3Z9CDd6jHg85mc 4GW86cysn5hALQbkzOoAahWkLhk9XSqdWQaUsbWB26nrvwXvS4 O0PU/veJ55sWgc32nJVeRGKL4scXweYsbeb1Fnkxcn1qlFFGm6 zcrk39JS0eMm7gx3PsDgbjImT7drxemOn8KgD7zNmaXIFmxmNK h40T04WuqS8FVPUL7gZENFfDCZ7K+5uIojzz5xdf5a8fYQ3RFJ DThZ2mCDh3UZ7md7T1hfycOKXdGbDXRP5DXfiplLm 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 03:25:20 -0000 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