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Date: Tue, 6 Jan 2015 17:12:05 +0100 From: Mariusz Gorski <marius.gorski@...il.com> To: Richard Weinberger <richard.weinberger@...il.com> Cc: Evgeniy Polyakov <zbr@...emap.net>, David Fries <David@...es.net>, Greg Kroah-Hartman <gregkh@...uxfoundation.org>, LKML <linux-kernel@...r.kernel.org> Subject: Re: [PATCH 0/2] w1: slaves: w1_therm: Add sysfs entry for current temperature On Tue, Jan 06, 2015 at 04:01:47PM +0100, Richard Weinberger wrote: > On Tue, Jan 6, 2015 at 3:29 PM, Mariusz Gorski <marius.gorski@...il.com> wrote: > > DS18B20 and it's brothers are pretty popular in the RaspberryPi world > > when it comes to temperature measurement. All tutorials on the Internet > > use the same way of parsing the output of the w1_slave sysfs file. > > These patches add a dedicated sysfs entry called 'temp' whose only job > > is to output the current temperature. > > And what is the benefit of this patches? Well, instead of having to parse the output of w1_slave: $ cat w1_slave 4d 01 55 00 7f ff 0c 10 fd : crc=fd YES 4d 01 55 00 7f ff 0c 10 fd t=20812 the userspace program gets only the interesting information, which usually is the current temparture: $ cat temp 20812 > > -- > Thanks, > //richard -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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