Temperature Sensor Reading not showing up.

[AKASH G J]

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 = ambientWARNLO_temp1=-40WARNHI_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.
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>> *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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