Sensoray 2253 Windows - Manual (Page 41)

device id in the system (use 0 with a single board installed).
encoderId
encoder identifier 0 or 1.
value
requested value.
S2253P_EnableEncoderAsync
MID2253_API int __stdcall S2253P_EnableEncoderAsync (
int devid,
int encoderId,
int enable);
This function controls enabling asynchronous encoder count updates internally
on the board. When asynchronous mode is enabled, encoder count on OSD
will update on-the-fly, and encoder reads do not require update first.
devid
device id in the system (use 0 with a single board installed).
encoderId
encoder identifier 0 or 1.
enable
0=disabled, 1=enable asynchronous updates
S2253P_EncoderRead
MID2253_API int __stdcall S2253P_EncoderRead (
int devid,
int encoderId,
S2253P_MODE mode,
int *value);
This function reads the encoder. 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
encoder using S2253P_EnableEncoderAsync, 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).
encoderId
encoder identifier 0 or 1.
mode
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