Temperature Sensor Reading not showing up.

[Troy Lee]

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
>>>> >