- From: fnacino AT internap.com (Frederick Nacino)
- Subject: [Lcdproc] Crystalfontz 635 usb lcd noise
- Date: Sat Mar 25 02:37:01 2006
Amazingly it works wonderfully at 16x2! (No BigClock at 16x2 but
everything else works really nice!) I hope this gives a clue as to how
to get the full use of every pixel on my 635!
Fred
Andrew Foss wrote:
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The hearts sound more like data corruption. Bummer that's a hard one.
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How does it look if you try 20x2 or 16x2?
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>
Andrew
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-----Original Message-----
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From: Frederick Nacino
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[mailto:fnacino AT internap.com]
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Sent: Fri Mar 24 17:03:20 2006
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To:
>
lcdproc AT lists.omnipotent.net
>
Subject: Re: [Lcdproc] Crystalfontz 635 usb lcd noise
>
>
I was thinking maybe it isn't serial noise but it's seems almost as if
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the data being transmitted from the LCDd to the display is happening
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too fast and certain things just don't get recognized by the display.
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I'd like to lower the baud rate but I was told this wouldn't work for
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USB devices. I did realize that the USB=yes option wasn't set so I set
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it and it seems my problem got a little worse in that I will sometimes
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get a bunch of hearts now along with my original problem when I use
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BigClock. I'm running linux 2.4.26 btw and yes 635 is 20x4.
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>
Fred
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>
Andrew Foss wrote:
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>
> hmmm, it's highly unlikely to be serial noise, that's the good news.
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> Have you tried creating a test widget and sending text to a specific
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> location, like row 1 column 1 and row2 column 16 or such and
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> confirming that the driver's putting your text in the right location?
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>
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> Also, for diagnosis I might suggest seeing if you set the screen to
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> 16x2 do you get at least 2 rows of 16 that behave normally, the 635 is
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> 20x4 isn't it?
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>
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> andrew
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>
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> Frederick Nacino wrote:
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>
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>> I've scoured the archives for some help with no luck. I have a
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>> Crystalfontz 635 USB and it's running on linux. Running lcdproc the
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>> display generally works however although I am not getting garbage, I
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>> seem to be getting residual data from previous screens littering my
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>> current screen. Trying to clear bad data out by sending blank lines
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>> to the display does not work. Other problems include menu widgets
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>> not appearing in the correct position or data not appearing when it
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>> should. Things that generally have to do with graphics and screen
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>> cursor positioning seem to fair worse than trying to display normal
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>> text, for example displaying the BigClock lcdproc client seems to be
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>> my worst offender as it is halfway unreadable and always leaves
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>> residue that cannot be cleaned up by subsequent screens.. I'm running
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>> current lcdproc code as of 3/14/2006. Screen size settings look good
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>> as well as does my conf. I am not sure what to make of what I am
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>> seeing or how to correct it. Any help would be great.
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>>
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>> Thanks!
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>> Fred
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>> ---
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>> http://www.internap.com/
>
>
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