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From: rgrs <rgrs@protonmail.com>
To: James Feist <james.feist@linux.intel.com>
Cc: Alexander Amelkin <a.amelkin@yadro.com>,
	"openbmc@lists.ozlabs.org" <openbmc@lists.ozlabs.org>,
	"Thomaiyar,
	Richard Marian" <richard.marian.thomaiyar@linux.intel.com>
Subject: Re: Faking Sensor Readings
Date: Wed, 04 Dec 2019 09:39:42 +0000	[thread overview]
Message-ID: <x5Z3U1jaa8Tf-HK1htUFoCqgAFdtIXGaDyEU7SKkgNkehJEtqaps9BvN2j_D5lsgjEgoTL81fZ8nJLitwFaqW2zRkFK8vXhbCrld3Ziy43o=@protonmail.com> (raw)
In-Reply-To: <234c1d26-7b59-0926-d6c2-6c49f75aab3f@linux.intel.com>

Hi James,

I tried busctl set-property,  but the values didn't change.
Are the steps below correct?
(test with both 'field mode' enabled and disabled)

root@obmc:~# busctl introspect xyz.openbmc_project.Hwmon-2439434288.Hwmon1  /xyz/openbmc_project/sensors/temperature/INLET_TEMP xyz.openbmc_project.Sensor.Value --no-pager
NAME                             TYPE      SIGNATURE RESULT/VALUE                             FLAGS
.MaxValue                        property  x         0                                        emits-change writable
.MinValue                        property  x         0                                        emits-change writable
.Scale                           property  x         -3                                       emits-change writable
.Unit                            property  s         "xyz.openbmc_project.Sensor.Value.Unit.… emits-change writable
.Value                           property  x         18500                                    emits-change writable

root@obmc:~# busctl --no-pager set-property xyz.openbmc_project.Hwmon-2439434288.Hwmon1  /xyz/openbmc_project/sensors/temperature/INLET_TEMP xyz.openbmc_project.Sensor.Value  Value x 50000

root@saber:~# busctl --no-pager get-property xyz.openbmc_project.Hwmon-2439434288.Hwmon1  /xyz/openbmc_project/sensors/temperature/INLET_TEMP xyz.openbmc_project.Sensor.Value  Value
x 18500

root@obmc:~#

Thanks,
Raj

‐‐‐‐‐‐‐ Original Message ‐‐‐‐‐‐‐
On Wednesday, December 4, 2019 1:34 AM, James Feist <james.feist@linux.intel.com> wrote:

&gt; On 12/3/19 5:49 AM, Alexander Amelkin wrote:
&gt;
&gt; &gt; 03.12.2019 15:06, rgrs wrote:
&gt; &gt;
&gt; &gt; &gt; Hi,
&gt; &gt; &gt; How do I fake sensor readings in OpenBMC?
&gt; &gt; &gt; We're trying to fake temperature sensors and make sure fans ramp up/down
&gt; &gt; &gt; accordingly.
&gt; &gt;
&gt; &gt; We ended up patching the kernel driver to fake the readings by request.
&gt; &gt; I'm not aware of any ready interface in OpenBMC for that.
&gt;
&gt; If you're using d-bus sensors, the sensor property is writable. It is
&gt; also supported by patching the sensor value in redfish.
&gt;
&gt; &gt; With best regards,
&gt; &gt; Alexander Amelkin

</james.feist@linux.intel.com>

  reply	other threads:[~2019-12-04  9:39 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-12-03 12:06 Faking Sensor Readings rgrs
2019-12-03 13:49 ` Alexander Amelkin
2019-12-03 20:04   ` James Feist
2019-12-04  9:39     ` rgrs [this message]
2019-12-04 17:10       ` James Feist
2019-12-06 11:32         ` rgrs
2019-12-09 18:28           ` James Feist
2019-12-11  9:14             ` rgrs
2019-12-11 17:29               ` James Feist
2019-12-12  5:28                 ` rgrs
2019-12-12 15:57                   ` James Feist
2019-12-13  6:06                     ` rgrs

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