National Instruments NI-VXI - Manual (Page 57)

Chapter 3 Software Overview
© National Instruments Corporation 3-19 NI-VXI User Manual
GetWSSEcmdHandler ()
GetWSSEcmdHandler returns the address of the current WSSEcmd
interrupt handler function. While Word Serial operations are enabled,
the
WSSEcmd interrupt handler will be called every time an Extended
Longword Serial command is received.
GetWSSLcmdHandler ()
GetWSSLcmdHandler returns the address of the current WSSLcmd
interrupt handler function. While Word Serial operations are enabled,
the
WSSLcmd interrupt handler is called whenever a Longword Serial
command is received.
GetWSSrdHandler ()
GetWSSrdHandler returns the address of the current WSSrd interrupt
handler function. When WSSrd reaches the specified count or an END
bit, or an error occurs, it calls the WSSrd interrupt handler with the
status of the call.
GetWSSwrtHandler ()
GetWSSwrtHandler returns the address of the current WSSwrt
interrupt handler function. When WSSwrt reaches the specified count
or an error occurs, it calls the WSSwrt interrupt handler with the status
of the call.
RespProtError ()
When the Word Serial Read Protocol Error query is received,
RespProtError places the saved error response in the Data Low
register, sets the saved error response to ffffh (no error), unasserts
ERR*, and sets RR. If no previous error is pending, the value ffffh
(no error) is returned.
SetWSScmdHandler (func)
SetWSScmdHandler replaces the current WSScmd interrupt handler
with an alternate handler. While Word Serial operations are enabled,
the
WSScmd interrupt handler is called whenever a Word Serial
command is received (other than BAV if a WSSrd call is pending,
or BREQ if a WSSwrt call is pending). A default handler,
DefaultWSScmdHandler , is supplied in source code as an example,
and is automatically installed when InitVXIlibrary is called. The