From mboxrd@z Thu Jan 1 00:00:00 1970 From: Jonathan Cameron Subject: Re: [lm-sensors] Use the Linux I2C subsystem for a two wire interface protocol Date: Thu, 16 Jul 2009 18:51:20 +0000 Message-ID: <4A5F76A8.8080001@cam.ac.uk> References: <528f13590907140925h7aa36452o60da32d3bf941241@mail.gmail.com> <4A5CB908.4060404@cam.ac.uk> <528f13590907141358w17869b6fq450bf223e4f54687@mail.gmail.com> <4A5D6C0A.7030903@gmx.de> <528f13590907150722q2a91139bve72d65cbd555b8e9@mail.gmail.com> <4A5DEB12.3020602@cam.ac.uk> <528f13590907151032y30ae62beo486d4e1056219983@mail.gmail.com> <4A5E206F.8000001@cam.ac.uk> <528f13590907160913n73dcb4fcuf09f4946d7578793@mail.gmail.com> <528f13590907160929r1385c99el6c1ed16ca1b592d2@mail.gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit Return-path: In-Reply-To: <528f13590907160929r1385c99el6c1ed16ca1b592d2-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org> Sender: linux-i2c-owner-u79uwXL29TY76Z2rM5mHXA@public.gmane.org To: alfred steele Cc: Michael Lawnick , linux-i2c-u79uwXL29TY76Z2rM5mHXA@public.gmane.org, LM Sensors List-Id: linux-i2c@vger.kernel.org alfred steele wrote: >> ~$ insmod sht15.ko >> regulator: Unable to get requested regulator: vcc >> sht15 sht15: Command not acknowledged > Please ignore the 1st line as i have bypassed the regulator framework. > Another quick question: The datasheet recommends 3.3V but the > voltage measured on my lines are ~2.8V. That could be another spoiler. It'll probably be fine. I suggest sticking a scope on the signal lines and confirming things that look about right are going down them. Jonathan