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Re: [AVR-Chat] New LCD will not work.

2005-04-23 by Dave VanHorn

At 08:14 PM 4/22/2005, Jørn Tore Ørsland wrote:

>fuck you!!!!!!!!! DONT ASK SUTSH A STUPID
>QUESTIN!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!

Member removed.


LCD displays generally don't display anything 
useful on powerup, but you should be able to vary 
the contrast voltage, and get black squares.
If you can't get that, then even if you are 
talking to it right, you may never know it.

Other than that, it's TIMING, TIMING, TIMING.
Do ALL the init steps, and insure that all your delays meet spec plus a bit.
You can always trim the delays back to spec+1 after you get it talking.

It can be tedious, since you don't usually get 
anything viewable until you get all of it right.

I can sympathize, I just went through this with a 
small 16 bit color LCD on another project, with a 
VERY long init sequence, where the parts that 
were correct, were poorly documented. :)

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