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dear sir,
i am an Engg. student in jaipur(India).i have some
problem in my project.it is an application of 8535 controller.in which
no any messege display on LCD board.so ,how we can identify it's
programmed or not?

Regards
rakesh



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Hi Rakesh,

Some of us here can probably help you, but we need more information.
Have you written other programs and programmed the 8535 successfully with
them? What programmer are you using?

What LCD board are you using? What is the driver chip on the LCD board?
What program are you using to control the LCD driver chip? Did you write
it yourself or are you using someone else's program? What language are you
programming in?

How are you connection the LCD board to the microcontroller? (What ports,
etc.?)

Zack

On Fri, 16 Nov 2007, kkumawat82 wrote:

> dear sir,
> i am an Engg. student in jaipur(India).i have some
> problem in my project.it is an application of 8535 controller.in which
> no any messege display on LCD board.so ,how we can identify it's
> programmed or not?
> Regards
> rakesh



(You need to be a member of avrclub -- send a blank email to avrclub-subscribe@yahoogroups.com )

--- In a...@yahoogroups.com, Zack Widup wrote:
>
> Dear Rakesh

Jack has asked all the questions that you must answer to get help
faster or else like me all are having doubts about correctness of your
code, interface etc.

Actually I had done the same without much difficulty using my own
code. So you too can do it.

With little information about your project, I would like to suggest as
below:

1) To check whether your 8535 is programed or not and also to check if
the values are actually seen on the port you could make toggling a
bit on one of the port as part of your program and check it on
oscilloscope (I have also used mutimeter and my test passes if it
reads 2.4 volts DC as I generate square wave)

About LCD interface. I presume you are using 16x2 LCD (JHD /Powertip etc)

1) Please follow the initialisation sequence given in the manual(for
the controller IC on LCD display) as it is. Give a good delay between
all the steps. This delay is very important for the LCD to init or
else it will show blank or garbage.

2) You can start with 8 bit mode and can then reduce to 4 bit (this is
how I had done it).

For more detailed help please reply to questions raised by Jack.

Further If you can help me. I am looking for some PCB manufacturer for
my AVR project in and around New Delhi or Jaipur. Can you help me ? I
am basically looking for around 50 to 100 pcs of single and double
side with PTH.

Though I am outside India but connected to Jaipur and love the city. I
am very far or else I could have explained to you everything in 1 hour
and that too in Hindi.

Good luck

Sharma

> Hi Rakesh,
>
> Some of us here can probably help you, but we need more information.
> Have you written other programs and programmed the 8535 successfully
with
> them? What programmer are you using?
>
> What LCD board are you using? What is the driver chip on the LCD
board?
> What program are you using to control the LCD driver chip? Did you
write
> it yourself or are you using someone else's program? What language
are you
> programming in?
>
> How are you connection the LCD board to the microcontroller? (What
ports,
> etc.?)
>
> Zack
>
> On Fri, 16 Nov 2007, kkumawat82 wrote:
>
> > dear sir,
> > i am an Engg. student in jaipur(India).i have some
> > problem in my project.it is an application of 8535 controller.in which
> > no any messege display on LCD board.so ,how we can identify it's
> > programmed or not?
> >
> >
> >
> >
> > Regards
> > rakesh
> >
>



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