175 lines
3.3 KiB
C
175 lines
3.3 KiB
C
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/*++
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Copyright (c) 2000 Microsoft Corporation. All rights reserved.
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Module Name:
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upssvc.h
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Abstract:
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This file defines the interface to the serial UPS service in
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Windows 2000. Please see the UPS documentation in the DDK
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for more information.
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--*/
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#ifndef _INC_UPS_DRIVER_H_
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#define _INC_UPS_DRIVER_H_
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//
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// values that represent the state of the
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// UPS system - these values are used in the
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// UPSGetState and UPSWaitForStateChange functions
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//
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#define UPS_ONLINE 1
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#define UPS_ONBATTERY 2
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#define UPS_LOWBATTERY 4
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#define UPS_NOCOMM 8
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#define UPS_CRITICAL 16
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//
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// possible error codes returned from UPSInit
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//
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#define UPS_INITUNKNOWNERROR 0
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#define UPS_INITOK 1
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#define UPS_INITNOSUCHDRIVER 2
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#define UPS_INITBADINTERFACE 3
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#define UPS_INITREGISTRYERROR 4
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#define UPS_INITCOMMOPENERROR 5
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#define UPS_INITCOMMSETUPERROR 6
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/**
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* UPSInit
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*
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* Description:
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*
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* The UPSInit function must be called before any
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* other function in this file
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*
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* Parameters:
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* None
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*
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* Returns:
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* UPS_INITOK: Initalization was successful
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* UPS_INITNOSUCHDRIVER: The configured driver DLL can't be opened
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* UPS_INITBADINTERFACE: The configured driver DLL doesn't support
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* the UPS driver interface
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* UPS_INITREGISTRYERROR: The 'Options' registry value is corrupt
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* UPS_INITCOMMOPENERROR: The comm port could not be opened
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* UPS_INITCOMMSETUPERROR: The comm port could not be configured
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* UPS_INITUNKNOWNERROR: Undefined error has occurred
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*
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*/
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DWORD UPSInit(void);
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/**
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* UPSStop
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*
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* Description:
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* After a call to UPSStop, only the UPSInit
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* function is valid. This call will unload the
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* UPS driver interface and stop monitoring of the
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* UPS system
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*
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* Parameters:
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* None
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*
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* Returns:
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* None
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*
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*/
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void UPSStop(void);
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/**
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* UPSWaitForStateChange
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*
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* Description:
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* Blocks until the state of the UPS differs
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* from the value passed in via aCurrentState or
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* anInterval milliseconds has expired. If
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* anInterval has a value of INFINITE this
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* function will never timeout
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*
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* Parameters:
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* aState: defines the state to wait for a change from,
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* possible values:
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* UPS_ONLINE
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* UPS_ONBATTERY
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* UPS_LOWBATTERY
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* UPS_NOCOMM
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*
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* anInterval: timeout in milliseconds, or INFINITE for
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* no timeout interval
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*
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* Returns:
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* None
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*
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*/
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void UPSWaitForStateChange(DWORD aCurrentState, DWORD anInterval);
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/**
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* UPSGetState
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*
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* Description:
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* returns the current state of the UPS
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*
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* Parameters:
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* None
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*
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* Returns:
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* possible values:
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* UPS_ONLINE
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* UPS_ONBATTERY
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* UPS_LOWBATTERY
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* UPS_NOCOMM
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*
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*/
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DWORD UPSGetState(void);
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/**
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* UPSCancelWait
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*
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* Description:
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* interrupts pending calls to UPSWaitForStateChange
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* without regard to timout or state change
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*
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* Parameters:
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* None
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*
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* Returns:
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* None
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*
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*/
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void UPSCancelWait(void);
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/**
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* UPSTurnOff
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*
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* Description:
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* Attempts to turn off the outlets on the UPS
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* after the specified delay. This call must
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* return immediately. Any work, such as a timer,
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* must be performed on a another thread.
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*
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* Parameters:
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* aTurnOffDelay: the minimum amount of time to wait before
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* turning off the outlets on the UPS
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*
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* Returns:
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* None
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*
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*/
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void UPSTurnOff(DWORD aTurnOffDelay);
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#endif
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