Sensoray 2253 Windows - Manual (Page 44)

S2253P_MODE mode);
This function reads the XIO. This requires two transactions, an “update”
request, and a “read” reply. The transactions may be performed
independently, or together. Any read transaction will cause this function to
block until the reply is received. When asynchronous mode is enabled for an
XIO using S2253P_EnableXIOAsync, the “update” transaction is not required
and a read should not block.
devid
device id in the system (use 0 with a single board installed).
xioId
xio identifier 0 to 3.
value
pointer to variable receiving current value, for read transactions: 0 or 1
(active low)
mode
S2253P_MODE_UPDATE: send encoder update transaction
S2253P_MODE_READ: read encoder reply
S2253P_MODE_UPDATE_READ: both
S2253P_PauseConfigXIO
MID2253_API int __stdcall S2253P_ReadXIO (
int devid,
int streamId,
int xioId,
S2253P_XIO_PAUSE_MODE mode);
This function configures a stream for pausing basec on XIO events. This
requires that asynchronous mode be enabled for the XIO using
S2253P_EnableXIOAsync. The stream can be paused when one of the
following events occurs: rising edge, falling edge, level high, level low.
devid
device id in the system (use 0 with a single board installed).
streamId
Stream identifier 0=Stream A, 1=Stream B, 2=Output.
xioId
xio identifier 0 to 3.
mode
S2253P_XIO_PAUSE_MODE_DISABLE: stream will not pause
S2253P_XIO_PAUSE_MODE_RISING_EDGE
S2253P_XIO_PAUSE_MODE_FALLING_EDGE
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