sending data from PIC via parallel port

[mado-wardany]

Hi,
i want to send 16 bits , 8 bits then 8 bits via parallel port from PIC 16f877 to computer,
plz help me as soon as

 

[btbass]

For good information on interfacing to the parallel port visit beyond logic:

https://www.beyondlogic.org/

 

[mado-wardany]

after i ask my instructor on this problem he said that i should to create a program for example on VB, to convert the status pins and control pins in parallel port to be as data pins (d0-d7), then, 8 bit via data register (D0-D7), and the 2nd 8 bits via status and control register,

is this true???????

 

[btbass]

Take a look on the beyond logic site. There is full information on the parallel port.
Not all pins are equal in function.

 

[mado-wardany]

thx btbass,
but i need more explaniation plz

 

[btbass]

Have you looked at beyond logic web site?
It has very detailed description and sample code for using the parallel port.
I think they can tell you more than me.

 

[elrayes]

you can send 8 by 8 bits and use any of the status pins as "strobe", when you send the first 8 bits sent it outputs a transition from 0 to 1 then to 0 after a while and when the second 8 bits sent it outputs a transition from 0 to 1 then to 0.
good luck

 

[ProEngineer]

It's hard to beleive that in this day and age any competent "teacher" would have an assignment where you use the PC's parallel port. They are virtually non-existent - few new computer have them, and as you'll find out the security of modern operating systems makes it difficult to control them. Also, they are wasteful on the PIC-side as they require at least 9 lines to implement 8-bit wide data . Also, I doubt that you'll find many companies that are develioping new products that use the parallel port . There are so many better interfaces that you could be learning about that would benefit when you get into the "real world"; either as an professional or even a hobbyist.