1description: > 2 Implement to provide sensor readings. Objects implementing Sensor.Value 3 must be instantiated in the correct hierarchy within the sensors 4 namespace. The following sensor hierarchies are recognized: 5 airflow 6 altitude 7 current 8 energy 9 fan_tach 10 frequency 11 humidity 12 liquidflow 13 power 14 pressure 15 temperature 16 utilization 17 valve 18 voltage 19 20 Any service implementing Sensor.Value on one or more objects must implement 21 org.freedesktop.DBus.ObjectManager on /xyz/openbmc_project/sensors. 22 23 All Sensor.Value properties are read-only, unless the 24 xyz.openbmc_project.Sensor.ValueMutability interface is present on the same 25 object path. In that case, refer to the docs for ValueMutability interface. 26 27properties: 28 - name: Value 29 type: double 30 description: > 31 The sensor reading. 32 - name: MaxValue 33 type: double 34 default: infinity 35 description: > 36 The Maximum supported sensor reading. 37 - name: MinValue 38 type: double 39 default: -infinity 40 description: > 41 The Minimum supported sensor reading. 42 - name: Unit 43 type: enum[self.Unit] 44 description: > 45 The unit of the reading. Immutable once set for a sensor. For objects 46 in the airflow namespace, Unit must be "CFM" For objects in the 47 altitude namespace, Unit must be "Meters". For objects in the current 48 namespace, Unit must be "Amperes". For objects in the energy 49 namespace, Unit must be "Joules". For objects in the fan_tach 50 namespace, Unit must be "RPMS". For objects in the humidity namespace, 51 Unit must be "PercentRH" For objects in the power namespace, Unit must 52 be "Watts". For objects in the pressure namespace, Unit must be 53 "Pascals" For objects in the temperature namespace, Unit must be 54 "DegreesC". For objects in the utilization namespace, Unit must be 55 "Percent" For objects in the voltage namespace, Unit must be "Volts", 56 For objects in the liquidflow namespace, Unit must be "LPM". For 57 objects in the frequency namespace, Unit must be "Hertz". For objects 58 in the valve namespace, Unit must be "Percent". 59 60enumerations: 61 - name: Unit 62 description: > 63 A sensor reading unit. 64 values: 65 - name: Amperes 66 description: > 67 Electrical charge flow rate as Amperes. 68 - name: CFM 69 description: > 70 To calculate Air Flow in Cubic Feet per Minute 71 - name: DegreesC 72 description: > 73 Temperature as degrees Celsius. 74 - name: Hertz 75 description: > 76 Frequency in Hertz 77 - name: Joules 78 description: > 79 Energy transfer as Joules. 80 - name: LPM 81 description: > 82 To calculate the liquid flow in Liters Per Minute. 83 - name: Meters 84 description: > 85 Length as meters. 86 - name: Percent 87 description: > 88 Resource utilization as a percentage. 89 - name: PercentRH 90 description: > 91 Relative humidity as a percentage. 92 - name: Pascals 93 description: > 94 Pressure as pascals. 95 - name: RPMS 96 description: > 97 Frequency of rotation as revolutions per minute. 98 - name: Volts 99 description: > 100 Electromotive force as volts. 101 - name: Watts 102 description: > 103 Rate of energy transfer as Watts. 104 105associations: 106 - name: inventory 107 description: > 108 Sensors may implement an 'inventory' to 'sensors' association with the 109 inventory item related to it. 110 reverse_names: 111 - sensors 112 required_endpoint_interfaces: 113 - xyz.openbmc_project.Inventory.Item 114 - name: monitoring 115 description: > 116 Sensors may monitor the BMC's resource utilization and implement an 117 association to the Bmc item. 118 reverse_names: 119 - monitored_by 120 required_endpoint_interfaces: 121 - xyz.openbmc_project.Inventory.Item.Bmc 122 123paths: 124 - namespace: /xyz/openbmc_project/sensors 125 segments: 126 - name: Airflow 127 value: airflow 128 - name: Altitude 129 value: altitude 130 - name: Current 131 value: current 132 - name: Energy 133 value: energy 134 - name: FanTach 135 value: fan_tach 136 - name: Frequency 137 value: frequency 138 - name: Humidity 139 value: humidity 140 - name: Liquidflow 141 value: liquidflow 142 - name: Power 143 value: power 144 - name: Pressure 145 value: pressure 146 - name: Temperature 147 value: temperature 148 - name: Utilization 149 value: utilization 150 - name: Valve 151 value: valve 152 description: > 153 This path segment implements the value interface for the valve, 154 representing its open status. 155 - name: Voltage 156 value: voltage 157