From owner-freebsd-arm@freebsd.org Fri Jul 19 21:18:30 2019 Return-Path: Delivered-To: freebsd-arm@mailman.nyi.freebsd.org Received: from mx1.freebsd.org (mx1.freebsd.org [IPv6:2610:1c1:1:606c::19:1]) by mailman.nyi.freebsd.org (Postfix) with ESMTP id 09075ABF31 for ; Fri, 19 Jul 2019 21:18:30 +0000 (UTC) (envelope-from sparvu@kronometrix.org) Received: from mail.kronometrix.org (mail.kronometrix.org [95.85.46.90]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) server-signature RSA-PSS (4096 bits) client-signature RSA-PSS (4096 bits) client-digest SHA256) (Client CN "mail.kronometrix.org", Issuer "mail.kronometrix.org" (not verified)) by mx1.freebsd.org (Postfix) with ESMTPS id 1DA6986A98 for ; Fri, 19 Jul 2019 21:18:28 +0000 (UTC) (envelope-from sparvu@kronometrix.org) Received: from [192.168.1.164] (82-203-140-69.bb.dnainternet.fi [82.203.140.69]) (authenticated bits=0) by mail.kronometrix.org (8.15.2/8.15.2) with ESMTPSA id x6JLIPRU051899 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NO) for ; Fri, 19 Jul 2019 21:18:26 GMT (envelope-from sparvu@kronometrix.org) X-Authentication-Warning: mail.kronometrix.org: Host 82-203-140-69.bb.dnainternet.fi [82.203.140.69] claimed to be [192.168.1.164] From: Stefan Parvu Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.11\)) Subject: Re: Rasclock (PCF2127 ) Hardware Clock FreeBSD 12.0 Date: Sat, 20 Jul 2019 00:18:20 +0300 References: <41A4CA5C-B487-490F-8A19-2D51F43E1004@kronometrix.org> <95616620-bbaf-dbc3-49eb-3e2562638d49@bunyatech.com.au> <74E3E782-8481-4B5B-A0AF-A04590C27D6D@kronometrix.org> <790afcb5f0809a89b45982958a85f1539fec05c7.camel@freebsd.org> <36088812-2135-4433-BC49-0BC433EC6767@kronometrix.org> <86CC4711-47AC-45C6-B6D3-71C9FFDD4A91@kronometrix.org> <2ec7d7f63de31065b9cab396c662fe24f0107078.camel@freebsd.org> <2AC05799-7D11-4200-8D16-38E3718470BB@kronometrix.org> <91E26684-07A0-4F03-92BC-8D49359B1358@kronometrix.org> <5F33E59B-7EA5-4B8B-A95A-CD1FB569ACDC@kronometrix.org> <6a39f74088d2984b5426e8585b5f7e864a6766f8.camel@freebsd.org> <571EABD9-364C-4D91-9177-CC25CB382D76@kronometrix.org> <2dd107308cb7fc21bab793218d8e37039dbc108e.camel@freebsd.org> <77885EA9-6AA4-4106-B447-3A83FB6033BA@kronometrix.org> <7aafd9f1f1cc072081a14c41a0253e72cd449811.camel@freebsd.org> <89879D9D-9432-44FA-B4E0-A6D3EE969E7A@kronometrix.org> <5F7CD5C3-5107-48BE-B301-3193B4E7A4A2@kronometrix.org> To: freebsd-arm@freebsd.org In-Reply-To: Message-Id: <3C0049D3-5998-49F1-9B1E-A877A85A9268@kronometrix.org> X-Mailer: Apple Mail (2.3445.104.11) X-Rspamd-Queue-Id: 1DA6986A98 X-Spamd-Bar: + Authentication-Results: mx1.freebsd.org; spf=pass (mx1.freebsd.org: domain of sparvu@kronometrix.org designates 95.85.46.90 as permitted sender) smtp.mailfrom=sparvu@kronometrix.org X-Spamd-Result: default: False [1.68 / 15.00]; ARC_NA(0.00)[]; RCVD_VIA_SMTP_AUTH(0.00)[]; FROM_HAS_DN(0.00)[]; R_SPF_ALLOW(-0.20)[+mx]; MV_CASE(0.50)[]; MIME_GOOD(-0.10)[multipart/alternative,text/plain]; HAS_XAW(0.00)[]; PREVIOUSLY_DELIVERED(0.00)[freebsd-arm@freebsd.org]; NEURAL_SPAM_MEDIUM(0.25)[0.253,0]; RCPT_COUNT_ONE(0.00)[1]; NEURAL_HAM_LONG(-0.15)[-0.148,0]; TO_DN_NONE(0.00)[]; TO_MATCH_ENVRCPT_ALL(0.00)[]; MX_GOOD(-0.01)[cached: mail.kronometrix.org]; DMARC_NA(0.00)[kronometrix.org]; NEURAL_SPAM_SHORT(0.92)[0.920,0]; IP_SCORE(0.47)[ip: (0.34), ipnet: 95.85.0.0/18(1.00), asn: 14061(1.07), country: US(-0.05)]; FROM_EQ_ENVFROM(0.00)[]; R_DKIM_NA(0.00)[]; MIME_TRACE(0.00)[0:+,1:+]; ASN(0.00)[asn:14061, ipnet:95.85.0.0/18, country:US]; MID_RHS_MATCH_FROM(0.00)[]; RCVD_TLS_ALL(0.00)[]; RCVD_COUNT_TWO(0.00)[2] Content-Type: text/plain; charset=us-ascii Content-Transfer-Encoding: quoted-printable X-Content-Filtered-By: Mailman/MimeDel 2.1.29 X-BeenThere: freebsd-arm@freebsd.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: "Porting FreeBSD to ARM processors." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , X-List-Received-Date: Fri, 19 Jul 2019 21:18:30 -0000 > It's a bit frustrating that the Afterthough site has no info on what's > different between various revs of the rasclock. My v4.2 has a row of > through-holes on the edge of the card where you can add pins and get = at > various signals. One of the signals is VBAT, any chance you could get > a scope or meter on that and see if the voltage really is low, and > whether it drops over time, like something really is draining the > battery? =20 right. looks like that. Of course I could try another rasclock 4.0 - I = have 3 around. I can test with another clock and then I could test with = raspbian to see if this is OS related or hdw.=20 Then I will gget soon rasclock 4.2 - so then I could try exactly the = version you have. Except the board would be different. Not sure if thats important = but something might be different between RBPI2 and RBPI3B+=20 > Also, I wonder if there's any difference between its behavior > when it's mounted on the rpi versus if you take it off and set it = aside > for a few hours. Like maybe on an rpi3 there is current somehow > leaking back into the rpi circuitry. Hmm. I could test first this one. I could set and fix the time. The = power off the thing for coupld of hours or until morning and then plug it back to = my board and check if there is any difference. thats a good point. Stefan=