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Documentation Number 232OPSDA1397 Manual 21
B&B Electronics -- PO Box 1040 -- Ottawa, IL 61350
PH (815) 433-5100 -- FAX (815) 433-5105
B232OPSDA_SetDigitalOutput
Purpose:
This function sets the states of the digital output lines.
Syntax:
C:
BOOL B232OPSDA_SetDigitalOutput (WORD
hComDev, BYTE modAddr, WORD lines, WORD
states);
Pascal:
function B232OPSDA_ReadDigitalOutput
(hComDev : word; modAddr : byte; lines :
word; states : word);
BASIC:
FUNCTION B232OPSDAReadDigitalOutput
(BYVAL hComDev AS INTEGER, BYVAL modAddr
AS INTEGER, BYVAL lines AS INTEGER, BYVAL
states AS INTEGER)
Remarks:
hComDev is the handle to a serial port where the
module is connected. This is the value returned by
initComPort. modAddr is the module address. This
is always 30H (48 decimal) for 232OPSDA module.
lines is a bit mask of the digital outputs to change. This
will always be 01H (1 decimal) of the 232OPSDA,
because it only has one digital output line. states is the
new state of the digital outputs specified in lines. This
can be either zero for OFF or non-zero for ON.
Returns:
FALSE (zero) if the function fails, otherwise it returns
TRUE (non-zero).
deinitComPort
Purpose:
Removes the serial communications port driver.
Syntax:
C:
void deinitComPort (WORD hComDev);
Pascal:
procedure deinitComPort (hComDev : word);
BASIC:
sub deinitComPort (BYVAL hComDev AS
INTEGER);
Remarks:
This function must be called after a serial
communications port is installed with initComPort to
remove the interrupt service routine that it installs.
Returns:
Nothing.
See Also:
initComPort
initComPort
Purpose:
Installs a serial communications port driver.