Re: [PATCH 0/2] w1: slaves: w1_therm: Add sysfs entry for current temperature

[Mariusz Gorski]

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@xxxxxxxxx> 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
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