niFgen_close

ViStatus niFgen_close (ViSession vi);

Purpose

Performs the following operations:

• Closes the instrument I/O session.
• Destroys the NI-FGEN session and all of its attributes.
• Deallocates any memory resources NI-FGEN uses.

Note  After calling niFgen_close, you cannot use NI-FGEN again until you call niFgen_init or niFgen_InitWithOptions.

Not all signal routes established by calling the niFgen_ExportSignal and niFgen_RouteSignalOut functions are released when the NI-FGEN session is closed. The following table shows what will happen to a signal route on your device when the NI-FGEN session is closed.

Routes To	NI 5401/5411/5431	Other
Front Panel	Remain connected	Remain connected
RTSI/PXI Backplane	Remain connected	Disconnected

Parameters

Input
Name	Type	Description
vi	ViSession	Identifies your instrument session. vi is obtained from the niFgen_init or the niFgen_InitWithOptions functions and identifies a particular instrument session.

Return Value

Name	Type	Description
Status	ViStatus	Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. You can examine the status code from each call to an NI-FGEN function to determine if an error occurred. To obtain a text description of the status code, call the niFgen_error_message function. To obtain additional information about the error condition, call the niFgen_GetError function. To clear the error information from NI-FGEN, call the niFgen_ClearError function. The general meaning of the status code is as follows: Value Meaning 0 Success Positive Values Warnings Negative Values Errors