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Optrex GLCD w/ NJU6676 issues

 
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newguy



Joined: 24 Jun 2004
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Optrex GLCD w/ NJU6676 issues
PostPosted: Wed Mar 28, 2007 6:19 pm     Reply with quote

Has anyone incorporated an Optrex GLCD with the NJU6676 controller before? I'm trying to communicate with an Optrex F-51852 and it's giving me an ulcer. Optrex support has been anything but. Evil or Very Mad

All I'm after is a working init routine and a connection diagram that uses the parallel comm mode (so I can confirm my h/w). I've used, word for word, the init routine that Optrex claims to work and it won't. The display is totally dead, but I can communicate with the NJU6676.

I'm forced to use this particular display because F-51553 seems to be discontinued. That display uses the SED controller and it has easy to get up and running. The frustrating thing is that these two controllers are supposed to be nearly identical, save for the one difference noted on the second page of this document: http://www.apollodisplays.com/pdf/NJU6676vsS1D15605_E.PDF I've incorporated the extra 'driver on (0xE7)' command, but still nothing.

Any thoughts?
PCM programmer



Joined: 06 Sep 2003
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PostPosted: Wed Mar 28, 2007 11:42 pm     Reply with quote

Quote:

All I'm after is a working init routine and a connection diagram that uses
the parallel comm mode (so I can confirm my h/w).


This company makes an LCD demo board. About halfway down this
page, they say that it uses the F-51852 LCD.
http://www.mechatronix.net/lcd250bundle.htm

Then on their Links page, they have a link to an article with a
schematic that may be for that demo board. It shows an AtMega128
connected to a 30-pin header which is likely for the F-51852 LCD.
This might help you with your connections.
http://www.mechatronix.net/pdfs/atmel-lcd.pdf

----------
This company here, has got a demo board for the F-51852 LCD.
http://www.tvielectronics.com/Optrex_F-51852_LCD.html
Near the bottom of the page, they have a link to a schematic for
the board.
http://www.tvielectronics.com/Documents/TC553852Schematic.pdf
The schematic shows a AtMega16 connected to a 30-pin connector J1, which goes to the LCD.

-----------
Apollo Displays has an evaluation board for the F-51852 LCD.
Here is a link to the schematic.
http://www.apollodisplays.com/pdf/51553-51852%20Eval%20Board.pdf

----------
Here's a driver for the F-51852 LCD:
https://oss.tekno.us/svn/luwak/libuwak/trunk/drivers/displays/f51852.c

Here's a .H file:
https://oss.tekno.us/svn/luwak/libuwak/trunk/drivers/displays/f51852.h

Here's a related file.
https://oss.tekno.us/svn/luwak/tests/trunk/gfxlcd/gfxdrv.c
newguy



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PostPosted: Thu Mar 29, 2007 1:12 pm     Reply with quote

PCM, if there was an emoticon for bow-down-and-worship-you-as-a-google-god, I'd surely include it.

Unfortunately, both versions of the h/w from the links you provided and the code that you miraculously dug up haven't helped. The crumbs that an optrex app engineer gave to me more or less matched everything in the links. I've tried countless variations of init code - all with the same result. The display doesn't properly init.

I put in ANOTHER request for information to Optrex and will see what develops. I'm seriously starting to hate Optrex.
newguy



Joined: 24 Jun 2004
Posts: 1908

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PostPosted: Tue Apr 03, 2007 3:36 pm     Reply with quote

Fixed. See this post for details:

http://www.ccsinfo.com/forum/viewtopic.php?t=30399
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