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ezflyr
Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA
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 Posted: Sat Mar 17, 2012 9:16 am |
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Hi,
Are you saying that swapping CS1 and CS2 on the display causes the opposite side of the display to start working? IOW, first the right side was working, and now the left side is working?
If so, your GLCD is probably fine, and the trouble is with CS1 or CS2. You need to figure out which one isn't working. You can study the data sheet, or you can make a simple test.
Try disconnecting one of the CS lines, say CS2. If only one side of the display is now working, the problem is CS2. If the display is not working at all, the problem is CS1. Try each CS line separately - you get the idea.
Once you know which line is causing the problem, you can moe carefully check your wiring. You can also write a small test program to "exercise" the offending line to verify that your PIC is OK. Connect the line to a scope or an LED to give yourself some feedback.
John |
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sresam89
Joined: 15 Mar 2012
Posts: 20
Location: India
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| Posted: Sat Mar 17, 2012 11:14 am |
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| ezflyr wrote: | Hi,
Are you saying that swapping CS1 and CS2 on the display causes the opposite side of the display to start working? IOW, first the right side was working, and now the left side is working?
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yes swapping the cs lines causes the display to show the output on single side ONLY that is the left side.
From the very beginning my left side was only working.
| Quote: |
If so, your GLCD is probably fine, and the trouble is with CS1 or CS2. You need to figure out which one isn't working. You can study the data sheet, or you can make a simple test.
Try disconnecting one of the CS lines, say CS2. If only one side of the display is now working, the problem is CS2. If the display is not working at all, the problem is CS1. Try each CS line separately - you get the idea.
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When I plugin portC.2 into CS2 (16 pin of GLCD) and portC.1 (15 pin of GLCD) in to CS1 I get the half of the content on the left side but nothing on the right.
When I swap the leads portc.2 to cs1 and portc.1 to cs2 I get the other half of the content to be displayed but sadly on the same left side of the display still no contents on the right side of my LCD !!
| Quote: |
Once you know which line is causing the problem, you can moe carefully check your wiring. You can also write a small test program to "exercise" the offending line to verify that your PIC is OK. Connect the line to a scope or an LED to give yourself some feedback.
John |
This proves that my cs1 and cs2 lines from pic are giving out datas 
What more should I be doing to correct my code  
Also notice I am getting some sort of black bars in my display. Please see my attachment in the previous post.
https://picasaweb.google.com/sresam89/Project?authkey=Gv1sRgCP3WsOikn7-kcw#5720836329326722082 |
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ezflyr
Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA
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| Posted: Sun Mar 18, 2012 10:36 pm |
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Hi,
It seems that your display might have problem. Can you try a new one?
John |
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sresam89
Joined: 15 Mar 2012
Posts: 20
Location: India
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| Posted: Sun Mar 18, 2012 11:39 pm |
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| ezflyr wrote: | Hi,
It seems that your display might have problem. Can you try a new one?
John |
hi ezflyr
I have tried with new one too still the problem exists. :(
Any problem with driver? If you have one can you please attach it. |
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ezflyr
Joined: 25 Oct 2010
Posts: 1019
Location: Tewksbury, MA
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| Posted: Tue Mar 20, 2012 10:20 am |
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Hi,
To summarze, with the "normal" configuration of CS1 and CS2 you only see something on the left side of the display, and with these lines swapped you still only see something on the left side, but it's the data that nomally goes on the right side?
If you've swapped displays then I guess your drive is not handling the CS lines correctly? I'm traveling, and can't send you anything for about a week. I have a modified version of the CCS driver 'GLCD.c' that I've added some additional font sizes to, and some other things. I can send it to you when I get back.
John |
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sresam89
Joined: 15 Mar 2012
Posts: 20
Location: India
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| Posted: Wed Mar 21, 2012 1:43 am |
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| ezflyr wrote: | Hi,
To summarze, with the "normal" configuration of CS1 and CS2 you only see something on the left side of the display, and with these lines swapped you still only see something on the left side, but it's the data that nomally goes on the right side?
If you've swapped displays then I guess your drive is not handling the CS lines correctly? I'm traveling, and can't send you anything for about a week. I have a modified version of the CCS driver 'GLCD.c' that I've added some additional font sizes to, and some other things. I can send it to you when I get back.
John |
is there a need to invert the cs2 lines to deliver the correct codes to the driver |
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