Temperature Sensor Reading not showing up.

[AKASH G J]

No such service is available in root file system. The output of the command *ls
/ -R | grep Hwmon  *is







*root at zaius:~# ls / -R | grep
Hwmon
xyz.openbmc_project.Hwmon at .service
system-xyz.openbmc_project.Hwmon.slice
/sys/fs/cgroup/systemd/system.slice/system-xyz.openbmc_project.Hwmon.slice:
system-xyz.openbmc_project.Hwmon.slice
/sys/fs/cgroup/unified/system.slice/system-xyz.openbmc_project.Hwmon.slice:
root at zaius:~#*

On Mon, Nov 5, 2018 at 1:20 PM Troy Lee <leetroy at gmail.com> wrote:

> Your service path doesn't look right.
>
> According to:
> https://github.com/openbmc/docs/blob/master/sensor-architecture.md#d-bus
>
> It should be something like this:
>   xyz.openbmc_project.Hwmon-<hash>.Hwmon1
>
>
>
> Yu-Ting Lee (Troy Lee) <LeeTroy at gmail.com>
> AKASH G J <akashgj91 at gmail.com> 於 2018年11月5日 週一 下午2:55寫道：
> >
> > I tried the command busctl --system introspect xyz.openbmc_project.Hwmon at .service
> /xyz/openbmc_project/Sensors/temperature/ambient
> xyz.openbmc_project.sensor.Threshold.Warning | grep property and it outputs
> >
> > Failed to introspect object
> /xyz/openbmc_project/Sensors/temperature/ambient of service
> xyz.openbmc_project.Hwmon at .service: Invalid argument.
> >
> > I added the file
> meta-zaius/recipes-phosphor/sensors/phosphor-hwmon%/obmc/hwmon/ahb/apb/i2c at 1e6e2000
> /i2c-bus at 90/tmp75 at 48.conf in machine configuration directory with the
> following contents for dbus mapping.
> >
> > LABEL_temp1 = ambient
> > WARNLO_temp1=-40
> > WARNHI_temp1=125
> >
> > Whether this is correct or not?
> >
> > On Fri, Nov 2, 2018 at 8:57 PM Emily Shaffer <emilyshaffer at google.com>
> wrote:
> >>
> >> Have you tried a dbus introspect to see if the sensor is coming across
> dbus correctly? There is a sample introspect command on the sensor howto,
> check out the busctl usage.
> https://github.com/openbmc/docs/blob/master/sensor-architecture.md
> >>
> >> On Fri, Nov 2, 2018, 3:21 AM AKASH G J <akashgj91 at gmail.com> wrote:
> >>>
> >>> I added the sensor configuration to phosphor-host-ipmid's sensor
> configuration like.
> >>>
> >>> 0x12: &temperature
> >>>   sensorType: 0x01
> >>>   path: /xyz/openbmc_project/sensors/temperature/ambient
> >>>   sensorReadingType: 0x01
> >>>   multiplierM: 235
> >>>   offsetB: 0
> >>>   bExp: 0
> >>>   unit: xyz.openbmc_project.Sensor.Value.Unit.DegreesC
> >>>   scale: -3
> >>>   rExp: -3
> >>>   serviceInterface: org.freedesktop.DBus.Properties
> >>>   readingType: readingData
> >>>   interfaces:
> >>>     xyz.openbmc_project.Sensor.Value:
> >>>       Value:
> >>>         Offsets:
> >>>           0xFF:
> >>>             type: int64_t
> >>>
> >>>
> >>> When I run the command ipmitool -I dbus sdr elist full, it gives the
> following.
> >>>
> >>> ambient          | 12h | ns  |  0.0 | Disabled
> >>>
> >>> It is not giving the sensor reading and it is showing the sensor
> device is disabled.
> >>>
> >>> On Thu, Nov 1, 2018 at 11:28 PM Patrick Venture <venture at google.com>
> wrote:
> >>>>
> >>>> On Tue, Oct 30, 2018 at 10:13 PM AKASH G J <akashgj91 at gmail.com>
> wrote:
> >>>> >
> >>>> > Hi All,
> >>>> >
> >>>> > I built OpenBMC Linux using Zaius configuration and booted on BMC
> Aspeed AST-2500. The board we are using have one temperature sensor (Texas
> Instruments TMP75) on I2C-12 interface.
> >>>> >
> >>>> > I added the file
> meta-zaius/recipes-phosphor/sensors/phosphor-hwmon%/obmc/hwmon/ahb/apb/i2c at 1e6e2000
> /i2c-bus at 90/tmp75 at 48.conf in machine configuration directory with the
> following contents.
> >>>> >
> >>>> > LABEL_temp1 = ambient
> >>>> > WARNLO_temp1=-40
> >>>> > WARNHI_temp1=125
> >>>> >
> >>>> > I added the following patch to the kernel file
> linux/arch/arm/boot/dts/aspeed-bmc-opp-zaius.dts.
> >>>> >
> >>>> >  &i2c12 {
> >>>> > -    status = "disabled";
> >>>> > +    status = "okay";
> >>>> > +
> >>>> > +    tmp75 at 48 {
> >>>> > +        compatible = "ti,tmp75";
> >>>> > +        reg = <0x48>;
> >>>> > +    };
> >>>> > +
> >>>> >  };
> >>>> >
> >>>> > After booting Linux, the changes are reflected in
> /sys/firmware/devicetree/base/ahb/apb/i2c at 1e78a000/i2c-bus at 440/tmp75 at 48.
> Also,
> >>>> > tmp78.conf is showing in
> /etc/default/obmc/hwmon/ahb/apb/i2c at 1e78a000/i2c-bus at 90.
> >>>> >
> >>>> > when I am running the ipmitool command: ipmitool -I dbus sdr elist
> full it is not showing the temperature sensor and its reading.
> >>>> >
> >>>> > Please someone help to resolve the problem.
> >>>>
> >>>> You'll need to add the sensor configuration to the
> >>>> phosphor-host-ipmid's sensor configuration, see:
> >>>>
> >>>>
> https://github.com/openbmc/openbmc/blob/master/meta-ingrasys/meta-zaius/recipes-phosphor/ipmi/phosphor-ipmi-sensor-inventory%25/config.yaml
> >>>>
> >>>> >
> >>>> >
> >>>> > Thanks and Regards,
> >>>> >
> >>>> > Akash
> >>>> >
>
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