Table of Contents
Advertisement
Chapter 4
Continued from previous page.
Configure the subsystem using
Start the operation with olDaStart.
Get event
message?
Yes
Process data.
Stop the operation
(see
Clean up the operation
(see
30
olDaConfig.
The event done message is OLDA_WM_EVENT_DONE. In
olDaSetWndHandle or olDaSetNotificationProcedure, the
subsystem handle, HDASS, is returned in the wParam
parameter; this allows one window to handle messages from both
subsystems. The subsystem status is returned in the IParam
parameter.
No
done
page
31).
page
32).
Table 3: Subsystem Status in IParam
Bits
High
State of the subsystem.
Word
The resolution reflects the number of
significant bits and represents actual line
states read from the board.
Low
DIO lines (bits) which caused the event.
Word
Bit 0 corresponds to subsystem's bit 0.
Bit 1 corresponds to subsystem's bit 1,
and so on.
Resolution reflects the # of significant bits.
Definition
Advertisement
Table of Contents
