t6963c LCD + 16F877a

JohnLeung · Joined: 18 May 2004 Posts: 15

I have put my code driver for 128x64 T6963C graphical LCD with a PIC 16F877a on the web. If any one interested can check www.TechToys.com.hk under the download section for details.

John Leung

The Puma · Joined: 23 Apr 2004 Posts: 227 Location: The Netherlands

Where can i find the source code?

JohnLeung · Joined: 18 May 2004 Posts: 15

Under the download section

jahan · Joined: 04 Apr 2005 Posts: 63

Hi,
Thank you for the great posting and detail information on how to create this project.

Question:
What shareware/software you've used to create the icons?

Thankx

JohnLeung · Joined: 18 May 2004 Posts: 15

It is FastLCD designer by Bojan I. MICRODESIGN, version 1.2.0.

Search the web. You will find its link for download.

John Leung

Alex25 · Joined: 11 Apr 2006 Posts: 2

Hi,
How can I draw a line between 2 pixels?
And, thanks for your library, I use it in my final
year project.
Regards,
Alex

VanHauser · Joined: 03 Oct 2005 Posts: 88 Location: Ploiesti, Romania

JohnLeung · Joined: 18 May 2004 Posts: 15

As long as you can draw a single pixel, it is possible to draw lines, circles etc. Visit Jharbour's web site on GBA programming

http://www.jharbour.com/gameboy/default.aspx.

Download Chapter 5 and take a look. There is a draw line routine there. Though it is based on a different complier; however, for C it would be OK. Just modify the color for Black and White ONLY for T6963C would be fine.

There are rectangles, circles, ... as well.

John Leung

Alex25 · Joined: 11 Apr 2006 Posts: 2

Hello Again,
Thanks for answers, I solved this with another code from this forum. But still, I need RAM to use in my project. I wont use external RAM, can I use the 8kb RAM from the T6963C display for 10 bit ADC data? And how?

Thanks Again,
Regards

JohnLeung · Joined: 18 May 2004 Posts: 15

I think it is possible to use that ram in t6963c for storage purpose. However, just make sure the speed is fast enough and you are not panning to the ram space that has been allocated for storing the ADC data. Otherwise, you will get a funny picture. Maybe it is like a matrix window. The physical screen of 128x64 dots is just a window to the ram space anyway.

Procedure of writing ADC data to RAM is like updating an off-screen page of the LCD, and reading it back is like reading screen data back. But the speed must be slow, comparing to an actual xram.

I haven't tried it though. Update me if it works.

John

Mark Weir · Joined: 11 Sep 2003 Posts: 51 Location: New Zealand

Hi Guys,

Just tried to download this code but I keep getting the following message:
*** Error 160 "E:\Marks D drive\PIC_LIBRARY\C_FILES\Examples\Graphic LCD\T6963CCS\glcdex1.c" Line 297(0,1): External symbol not found DisplayMode
1 Errors, 0 Warnings.

It does not compile. Can anyone spot where I have gone wrong please.

Cheers

Mark

PCM programmer · Joined: 06 Sep 2003 Posts: 21708

He has declared some variables with the 'extern' qualifier.
At the time he wrote his program, the CCS compiler accepted 'extern'
but ignored it. Since then (in late versions of 3.xxx, according to the
readme.txt file), it accepts 'extern'. This was in preparation for vs. 4.0.

Solution:
Find the lines where variables are declared as 'extern' and delete that
keyword only, leaving everything else in those lines unchanged.

JoKeR · Joined: 21 Oct 2006 Posts: 2

I managed to work with 16F877A I played for little and it's great ... regards...

Now I tried to work with 18F452 but I have problems with this mcu....
I someone know what do I need to change to 18f452 works???

Since I use PORTB for command and PORTD for data
in t6963c.h
Do I need to change #byte TRISB = 0x86 to 0xF81...
I dont understand wath is #byte PORTB = 0x06.

could someone explain to me this...

JoKeR · Joined: 21 Oct 2006 Posts: 2

resolved

vi_ni_ta · Joined: 11 Dec 2006 Posts: 7

what is the code for TRIS c and PORT c