[Lcd4linux-devel] RE: [lcd4linux] problem with i2c connected LCD display

[Luis.F.Correia <Lui...@se...>]

Hi!

> -----Original Message-----
> From: paul kamphuis [mailto:pau...@xs...] 
> Sent: Wednesday, February 09, 2005 2:50 PM
> To: Luis.F.Correia
> Subject: Re: [lcd4linux] problem with i2c connected LCD display
> 
> Thanks for the reply,
> I am not sure if I am supposed to reply directly, or keep the 
> messages 
> going through the list.

Well, you should reply always to the list. 
We get searchable archives that way...

> Can you give me a reason on why it would be so slow. It is 
> obvious that 
> it is slower then parallel port. But I used the same i2c connected 
> display on a 20 MHz microcontroller without a problem.

The hardware I have is a WRAP board, and it's interface runs with 3.3V,
it may be a problem for me, because I had to make a 3.3-5 adaptor.

Anyway, the amount of data lcd4linux produces needs an interface
fast enough to process it. I was unable to get a usable interface.

> 
> I am willing to give it a shot, if you are prepared to 
> provide me with 
> some assistance on where to start and how to start. It would 
> be my first 
> effort on writing code on linux.

No problem, I'm not really a C expert but at least I can help you
to follow the 'good line'. :)

> 
> Paul
> 

Luis