hi i want to change voltage level of parrell port's data regester.
my LPT1 port add is 0378h...
i m using C language 4 programing.
i knw that "outportb" fun is use to set data at port.
i hav written "outportb(0x378,0x00)"
and change the val of passed haxa decimal argument to fun
bt i m not geting apropiate volatage at port..
i think der should be problem wid the form of argument i hav passed to fun..
plz solved my problem.....

 

Does your OS give you direct access to the port? Some do not. Have you posed this question in the microcontroller forum. Maybe get a better response?

 

hi bhargavraj patel,

If you are using Windows XP, you will probably require the 'inpout32.ddl' in your windows/system directory.
You can download a free copy from the web.

If you require a copy of my parallel port test program, let me know.
You will also require the Visual Basic runtime files from the web.

__________________
Eric
"Good enough is Perfect"

PIC tutorials:
Gramo's: www.digital-diy.net/
Bill's: www.blueroomelectronics.com/

 

to ericgibbs
i'll be very much thankful as i needed it much

 

Hi,
The programs have been sent to your email address.
I would advise you to edit your first post, delete your email address, you could get spammed.

__________________
Eric
"Good enough is Perfect"

PIC tutorials:
Gramo's: www.digital-diy.net/
Bill's: www.blueroomelectronics.com/