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LCD displays and pics

 
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dbrown



Joined: 24 Jul 2004
Posts: 20

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LCD displays and pics
PostPosted: Sun Jan 30, 2005 5:43 pm     Reply with quote

I am working on a project with an LCD. I can connect the LCD to a circuit that utilizes the display in 8 bit mode, and this works. However, when I change it to 4 bit operation it does not work correctly, garbage characters. Is it likely that an LCD display can fail such that it works in 8 bit mode but not in 4 bit mode?

Thanks

Dave Brown
rwyoung



Joined: 12 Nov 2003
Posts: 563
Location: Lawrence, KS USA

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PostPosted: Sun Jan 30, 2005 5:59 pm     Reply with quote

I think you should repost this in the "general" forum. Probably get more responses.

It sounds like a small bug in your initialization code to setup the display in 4-bit mode.

When you repost, include the revision number of your compiler, the PIC part number you are using, if your code is short or you can write a reduced size version of your program that exhibits the problem and also list the PIC pins and to which LCD pins they connect.
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Rob Young
The Screw-Up Fairy may just visit you but he has crashed on my couch for the last month!
dbrown



Joined: 24 Jul 2004
Posts: 20

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LCD displays and pics
PostPosted: Sun Jan 30, 2005 6:17 pm     Reply with quote

Thanks for the response, I realized I posted my question to the wrong forum but it was too late. I will re-post on the general site.

Thanks

Dave Brown[/quote]
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