Delivered-To: daveyxm@virginmedia.com Received: by 10.50.203.68 with SMTP id ko4csp131458igc; Wed, 26 Mar 2014 17:43:24 -0700 (PDT) X-Received: by 10.180.109.231 with SMTP id hv7mr36114886wib.38.1395881003944; Wed, 26 Mar 2014 17:43:23 -0700 (PDT) Return-Path: Received: from post.thorcom.com (post.thorcom.com. [195.171.43.25]) by mx.google.com with ESMTP id s1si2881528wiy.91.2014.03.26.17.43.23 for ; Wed, 26 Mar 2014 17:43:23 -0700 (PDT) Received-SPF: neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) client-ip=195.171.43.25; Authentication-Results: mx.google.com; spf=neutral (google.com: 195.171.43.25 is neither permitted nor denied by best guess record for domain of owner-rsgb_lf_group@blacksheep.org) smtp.mail=owner-rsgb_lf_group@blacksheep.org Received: from majordom by post.thorcom.com with local (Exim 4.14) id 1WSxtH-0007qg-Lw for rs_out_1@blacksheep.org; Thu, 27 Mar 2014 00:09:51 +0000 Received: from [195.171.43.32] (helo=relay1.thorcom.net) by post.thorcom.com with esmtp (Exim 4.14) id 1WSxtH-0007qU-9d for rsgb_lf_group@blacksheep.org; Thu, 27 Mar 2014 00:09:51 +0000 Received: from smtpout1.wanadoo.co.uk ([80.12.242.29] helo=smtpout.wanadoo.co.uk) by relay1.thorcom.net with esmtp (Exim 4.82) (envelope-from ) id 1WSxtF-0002uk-NH for rsgb_lf_group@blacksheep.org; Thu, 27 Mar 2014 00:09:50 +0000 Received: from AGB ([2.27.183.120]) by mwinf5d12 with ME id iQ9o1n0062cGDs203Q9oJ5; Thu, 27 Mar 2014 01:09:48 +0100 Message-ID: <831432A2FA6647569F46B97785D783FF@AGB> From: "Graham" To: References: In-Reply-To: Date: Thu, 27 Mar 2014 00:09:48 -0000 MIME-Version: 1.0 X-Priority: 3 X-MSMail-Priority: Normal Importance: Normal X-Mailer: Microsoft Windows Live Mail 14.0.8117.416 X-MimeOLE: Produced By Microsoft MimeOLE V14.0.8117.416 X-Spam-Score: 0.0 (/) X-Spam-Report: Spam detection software, running on the system "relay1.thorcom.net", has identified this incoming email as possible spam. The original message has been attached to this so you can view it (if it isn't spam) or label similar future email. If you have any questions, see the administrator of that system for details. Content preview: Thanks Joe, Will pass that over , bit late now, will follow it up later Tnx -G, [...] Content analysis details: (0.0 points, 5.0 required) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at http://www.dnswl.org/, no trust [80.12.242.29 listed in list.dnswl.org] X-Scan-Signature: 086f3faad0220c9ae57a7913e711a86d Subject: Re: LF: Raspberry PI ,gpio pin 4 clock rate under 32 KHz HOW ? Content-Type: text/plain; format=flowed; charset="iso-8859-1"; reply-type=response Content-Transfer-Encoding: 7bit X-Spam-Checker-Version: SpamAssassin 2.63 (2004-01-11) on post.thorcom.com X-Spam-Level: X-Spam-Status: No, hits=0.1 required=5.0 tests=MISSING_OUTLOOK_NAME autolearn=no version=2.63 X-SA-Exim-Scanned: Yes Sender: owner-rsgb_lf_group@blacksheep.org Precedence: bulk Reply-To: rsgb_lf_group@blacksheep.org X-Listname: rsgb_lf_group X-SA-Exim-Rcpt-To: rs_out_1@blacksheep.org X-SA-Exim-Scanned: No; SAEximRunCond expanded to false Thanks Joe, Will pass that over , bit late now, will follow it up later Tnx -G, -------------------------------------------------- From: Sent: Wednesday, March 26, 2014 10:25 PM To: Subject: Re: LF: Raspberry PI ,gpio pin 4 clock rate under 32 KHz HOW ? > Hi Graham, > > This is probably too simplistic, but you can toggle the output with > a sleep(t) between to make a square f=1/(2t). > > Cheers > Joe VO1NA > > On Wed, 26 Mar 2014, Graham wrote: > >> Raspberry PI ,gpio pin 4 clock rate under 32 KHz HOW ? >> >> Q Is there a way to produce a audio frequency clock . from gpio >> pin - 4 ? >> >> Dividing the main clock , would appear to be limited to app >> 32KHz >> >> is there another way to produce lower / audio frequency's ? >> >> Tnx -G, >