Digsetup – Measurement Computing Personal488 rev.3.0 User Manual
Page 81
Personal488 for Windows 95/98/Me/NT/2000
04-10-01
API Reference 6-13
DigSetup
AT488pnp and PCI488 Only !
Syntax
INT WINAPI DigSetup(DevHandleT devHandle, BOOL bLowOut, BOOL
bHighOut);
devHandle
refers to an interface handle.
bLowOut
refers to the lower nibble setup.
TRUE
= output,
FALSE
= input.
bHighOut
refers to the upper nibble setup.
TRUE
= output,
FALSE
= input.
Returns
-1
if error
Bus States
None
Examples
DigSetup(devHandle, TRUE , TRUE);
All 8 bits output.
DigSetup(devHandle, FALSE, TRUE);
Lower 4 bits input, upper 4 output.
DigSetup(devHandle, TRUE , FALSE);
Lower 4 bits output, upper 4 input.
DigSetup(devHandle, FALSE, FALSE);
All 8 bits input.
See Also
DigRead, DigWrite
The
DigSetup
command configures the digital I/O port for input and output on a per-nibble basis. Each of
the two nibbles can be set for input or output. All combinations are supported. Once
DigSetup
is called,
the configuration of the digital I/O port does not change until the next call to
DigSetup
. The port may be
read and written many times without affecting the port setup.
Note:
The digital I/O port must be configured every time the driver is opened. The configuration is
not stored between sessions.