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interfacing 16x2 lcd to gpio of c6713

Started by asif bagwan May 2, 2008
hi freinds,
I m using gpio port of c6713 processor i have used HD[8:15] as GP[8:15] for data pins
but i mconfusing over pins GP2,3,4 which HD pin should i used for connecting
RS, En and R/W pin of lcd
plz help me in this problem.
-asif
ASIFBAGWAN
____________________________________________________________________________________
Asif-
> I m using gpio port of c6713 processor i have used HD[8:15] as GP[8:15] for data
> pinsbut i m confusing over pins GP2,3,4 which HD pin should i used for
> connectingRS, En and R/W pin of lcdplz help me in this problem.
>

Are you using DSK 6713 board? Does the LCD have a standard daughtercard? If you are
using an off-the-shelf LCD module that plugs onto a DSK 6713 board, like this one:

http://www.kanecomputing.co.uk/dsp_star_vm3224clt.htm

then you can look at the LCD module schematic to see which pins to use.

Otherwise, if you're making your own DSP board, then the choice of which GPIO pins to
use for LCD control signals is up to you.

-Jeff
Hello Asif,

On Fri, May 2, 2008 at 5:03 PM, Jeff Brower wrote:
> Asif-
> I m using gpio port of c6713 processor i have used HD[8:15] as GP[8:15] for
> data pinsbut i m confusing over pins GP2,3,4 which HD pin should i used for
> connectingRS, En and R/W pin of lcdplz help me in this problem.

This is the third time that you have posted a similar question since
March. You left out some information this time as you did other times.
You should respond to the original post. If you have questions, ask
them [try to be specific]. If you need more info or don't understand
something, ask for more info.

Now to your question -
The answer is the same as it was 30 days ago - it doesn't matter.
Your software will determine the functionality of GPIO signals.

mikedunn
> Are you using DSK 6713 board? Does the LCD have a standard daughtercard?
> If you are using an off-the-shelf LCD module that plugs onto a DSK 6713
> board, like this one:
>
> http://www.kanecomputing.co.uk/dsp_star_vm3224clt.htm
>
> then you can look at the LCD module schematic to see which pins to use.
>
> Otherwise, if you're making your own DSP board, then the choice of which
> GPIO pins to use for LCD control signals is up to you.
>
> -Jeff
>

--
www.dsprelated.com/blogs-1/nf/Mike_Dunn.php