sensorhandler: allow preconfigured unit and scale

Allow specifying the scale and unit for a sensor in the
YAML configuration.  This can save clock time by no longer
requiring the daemon to reach out to the sensor owner for
the information.

Change-Id: I5f63286fc32fb9d64ebab7d86d1dbb7ff40591f4
Signed-off-by: Emily Shaffer <emilyshaffer@google.com>
Signed-off-by: Patrick Venture <venture@google.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/types.hpp b/types.hpp
index 0177c8f..a43c8c0 100644
--- a/types.hpp
+++ b/types.hpp
@@ -113,6 +113,8 @@ using Multiplier = uint16_t;
 using OffsetB = uint16_t;
 using Exponent = uint8_t;
 using ScaledOffset = int64_t;
+using Scale = int16_t;
+using Unit = std::string;
 
 enum class Mutability
 {
@@ -142,6 +144,9 @@ struct Info
    OffsetB coefficientB;
    Exponent exponentB;
    ScaledOffset scaledOffset;
+   bool hasScale;
+   Scale scale;
+   Unit unit;
    std::function<uint8_t(SetSensorReadingReq&, const Info&)> updateFunc;
    std::function<GetSensorResponse(const Info&)> getFunc;
    Mutability mutability;