rtu: implement modbus sensor read
Read the modbus device config from the Entity Manager configuration and
create the sensor interfaces for related sensor register config.
Tested:
Added new Unit test named test_sensors -
```
> meson test -t 10 -C builddir/ --print-errorlogs --wrapper="valgrind --error-exitcode=1" test_sensors
ninja: Entering directory `/host/repos/Modbus/phosphor-modbus/builddir'
[2/2] Linking target tests/test_sensors
1/1 test_sensors OK 13.98s
Ok: 1
Fail: 0
```
Tested on Qemu using Mock Modbus Device -
```
root@ventura:~# busctl tree xyz.openbmc_project.ModbusRTU
└─ /xyz
└─ /xyz/openbmc_project
├─ /xyz/openbmc_project/inventory_source
│ ├─ /xyz/openbmc_project/inventory_source/Heat_Exchanger_12_DevTTYUSB0
│ ├─ /xyz/openbmc_project/inventory_source/Heat_Exchanger_12_DevTTYUSB1
│ ├─ /xyz/openbmc_project/inventory_source/Reservoir_Pumping_Unit_12_DevTTYUSB0
│ └─ /xyz/openbmc_project/inventory_source/Reservoir_Pumping_Unit_12_DevTTYUSB1
└─ /xyz/openbmc_project/sensors
└─ /xyz/openbmc_project/sensors/temperature
├─ /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB0_RPU_Coolant_Inlet_Temp_C
├─ /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB0_RPU_Coolant_Outlet_Temp_C
├─ /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB1_RPU_Coolant_Inlet_Temp_C
└─ /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB1_RPU_Coolant_Outlet_Temp_C
busctl introspect xyz.openbmc_project.ModbusRTU /xyz/openbmc_project/sensors/temperature/Reservoir_Pumping_Unit_12_DevTTYUSB1_RPU_Coolant_Outlet_Temp_C
NAME TYPE SIGNATURE RESULT/VALUE FLAGS
org.freedesktop.DBus.Introspectable interface - - -
.Introspect method - s -
org.freedesktop.DBus.Peer interface - - -
.GetMachineId method - s -
.Ping method - - -
org.freedesktop.DBus.Properties interface - - -
.Get method ss v -
.GetAll method s a{sv} -
.Set method ssv - -
.PropertiesChanged signal sa{sv}as - -
xyz.openbmc_project.Sensor.Value interface - - -
.MaxValue property d nan emits-change writable
.MinValue property d nan emits-change writable
.Unit property s "xyz.openbmc_project.Sensor.Value.Unit.… emits-change writable
.Value property d 1670.6 emits-change writable
```
Change-Id: I1368e8df5999b5cee9ac19d185ee110a9ecc3021
Signed-off-by: Jagpal Singh Gill <paligill@gmail.com>
diff --git a/tests/meson.build b/tests/meson.build
index bcc4fad..8b1df07 100644
--- a/tests/meson.build
+++ b/tests/meson.build
@@ -62,3 +62,15 @@
include_directories: ['.', common_include],
),
)
+
+test(
+ 'test_sensors',
+ executable(
+ 'test_sensors',
+ 'test_sensors.cpp',
+ 'modbus_server_tester.cpp',
+ device_src,
+ dependencies: [gtest_dep, gmock_dep, default_deps, modbus_rtu_dep],
+ include_directories: ['.', common_include],
+ ),
+)