Publication No. 500-657055-000 Rev. G
IPMI Firmware and OEM Extensions 59
B.1.12 Get Sensor Reading
This command returns the present reading for the sensor. Sensors are periodically scanned, and the last
reading will be immediately returned in response to this command.
Table B-11 NetFn 0x04, Cmd 0x2D
The Abaco IPMI subsystem contains several sensors. They provide the voltages and temperature
reading of the system. The various sensor settings like threshold, hysteresis, event enable, etc., are
statically configured in the Sensor Data Records.
Byte
Value
Data Field
Comments
Request-data 1
XXh
Sensor Number (FFh
reserved)
Response-
data
1
00h
Completion code
2
XXh
Sensor reading
3
XXh
[7] – 0b =All event
messages disabled for
this sensor
[6] - 0b = sensor scanning
disabled
[5] – 1b =Initial update in
progress.
[4-0] – reserved
4
XXh
For threshold-based
sensors, present
threshold comparison
status.
For discrete reading
sensors,
State 0-7 assert condition.
5
XXh
State 8-14 assert
condition
Optional for discrete
reading sensors
Sensor No
Type
Comments
0x41
3.3 V
Switched on/off by hotswap
controller, *BDSEL etc.
0x42
5 V
Switched on/off by hotswap
controller, *BDSEL etc.
0x43
3.3 V IN backplane
0x44
5 V IN backplane
0x60
Temp Sensor
0x61
Temp Sensor