JHD12864E Graphic LCD Problem

[Designer_Electronics]

i use JHD12864E Graphic LCD interface with pic18f4420 , but i have a strange phenomna , i have my (0,0) point at 63H address ,
kindly advise is it the problem of LCD itself (but i try 2 LCDs)? or how to adjust the refernce point to left upper side.
iam using MicroC S/W.

wait your reply
Thanks

 

[Designer_Electronics]

Any suggestion??

 

[doraemon]

Hello!

What do you mean by "I have my (0,0) point at 63H?
(0,0) looks like coordinates of a point, and 63H looks like an hexadecimal number.
Is it (0x63, 0)? (0x63, something_else)?
Does it mean that when you start writing, it's not from 0,0 but from another location?
I mean: you have something displaying on screen, right?

Now a few more questions:
1. Did you properly initialize the LCD?
2. Did you read the specification of the driver? (which happens to be a Samsung device SB0108)

Dora.

 

[Designer_Electronics]

Thank you for your interest.

The LCD is working probably, It is initialized well and Display images , but instead of its base point (0,0) , it starts at (0x63,0).