Gain,Offset with dbus-sensors values

[Josh Lehan]

Thanks for asking this. In particular, in PSUsensor it seems there is only
an ability to customize the scaling factor for an entire category of
sensors at once: InScaleFactor, CurrScaleFactor, PowerScaleFactor,
TempScaleFactor, and so on.

https://github.com/openbmc/dbus-sensors/blob/2adc95cb4d9ac879f66aa9ef12a6ce8b7c1578fe/src/PSUSensorMain.cpp#L408

Ideally, there would be a way to customize the scaling factor on a
per-sensor basis, for example to customize the scaling of Vout without also
affecting Vin.

Josh

Josh Lehan | Software Engineer | krellan at google.com | +1 650-733-8941



On Thu, Oct 3, 2019 at 5:03 PM Patrick Venture <venture at google.com> wrote:

> James;
>
> We have some sensors that need a gain and offset value set in the json
> file, for PSU sensors, but only vout/vin or some specific ones, and
> not applied to all sensors.
>
> Akin to:
> https://github.com/openbmc/phosphor-hwmon/blob/2227bd52c5bb8d62dcfe33b58d65515d21e9be17/sensor.cpp#L59
>
> Also, is there a way to customize the very verbose suffixes PSUsensor
> applies
> such as "Temperature" and "Output_Power".  With IPMI we're only
> granted 16 characters for the name and ipmid uses the last part of the
> dbus path for the name.
>
> Perhaps ipmid should allow overriding the name value.
>
> Patrick
>
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