Parallel port control

[newbie@VBA]

Does anyone know how to read & write to the parallel port
from Excel 2000 VBA & Windows XP.
I want to control some home built hardware not a printer.
I need to read the port frequently (every 0.001 seconds).
High res.timer forms timing loop but can't find out how
to read from the port?.

 

[Jonathan West]

Hi newbie

There is unlikely to be any literature specific to VBA for this. However,
for general-purpose programming, the VBA language is almost identical to VB
as it was in VB5 & VB6, so VB articles on this subject should be helpful. A
Google search for VB and parallel port has revealed this article

Programming The Parallel Port In Visual Basic
http://www.aaroncake.net/electronics/vblpt.htm

There are other articles that can be found, but this was the first
relevant-looking one that I came across.

 

[Alex Ivanov]

For start this may work.

Dim x
Open "lpt1" For Input As #1
Line Input #1, x
Close