
Chapter 3: Software Information
NEO Expansion Port Power Control
Psion Teklogix NEO HDK User Manual 25
All of the above API functions will return a value from the ExpansionPortResult enumera-
tion, indicating the success or failure status of the operation:
Table 3.2 PortPowerState Enumerations
Value Enumeration Name Description
0 PortPowerState_Off Power disabled (Default).
1 PortPowerState_On Always powered.
2 PortPowerState_OnAutoOff Enable power now, disable power on
suspend.
3 PowerPowerState_AutoOnAutoOff Enable power now, disable power on
suspend, re-enable power on resume.
Table 3.3 ExpansionPortResult Enumeration Values
Value Enumeration Name Description
0 ExpansionPortResult_Success The function was successful.
1 ExpansionPortResult_ErrorFailure The function failed.
2 ExpansionPortResult_ErrorInvalidParameter One or more of the
parameters was invalid.
3 ExpansionPortResult_ErrorNotSupported The requested operation is not
supported.
Note: During DTS initialization, the power state of this port will be set to whatever power
state is set in the registry.
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