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Help with EX_GLCD.C

 
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BOB_SANTANA



Joined: 16 Oct 2006
Posts: 110
Location: HOVE, EAST SUSSEX

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Help with EX_GLCD.C
PostPosted: Thu Dec 14, 2006 10:53 am     Reply with quote
Hi Guys

This is the first time i am attempting to run the example programme
EX_GLCD.C for a 64x128 samsung KS0108 chipset put the glcd just displays garbage.
my connections the to GLCD are as follows

PIC GLCD(PINS)
E2 CS1 >1
E1 CS2 >2
XXX GND >3
XXX +5V >4
XXX Vo >5
C1 RS > 6
C0 R/W
E0 EN
D7 - D0 connects to DB7 - DB0
RST > +5V
And i changed GLCD.C as follows


Code:



#ifndef GLCD_CS1
#define GLCD_CS1 PIN_E2   // Chip Selection 1
#endif

#ifndef GLCD_CS2
#define GLCD_CS2 PIN_E1   // Chip Selection 2
#endif

#ifndef GLCD_DI
#define GLCD_DI  PIN_B2   // Data or Instruction input
#endif

#ifndef GLCD_RW
#define GLCD_RW  PIN_C0   // Read/Write
#endif

#ifndef GLCD_E
#define GLCD_E   PIN_E0   // Enable
#endif

#ifndef GLCD_RST
#define GLCD_RST PIN_C1   // Reset
#endif




where does Data or Instruction input connect to?

Question
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BOB_Santana Smile
PCM programmer



Joined: 06 Sep 2003
Posts: 21708

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PostPosted: Thu Dec 14, 2006 12:29 pm     Reply with quote
Quote:
where does Data or Instruction input connect to?

See this thread for an explanation:
http://www.ccsinfo.com/forum/viewtopic.php?t=28349&start=2


Quote:
#define GLCD_RST PIN_C1 // Reset

RST > +5V

Those two lines contradict each other. The driver wants the RST pin
on the GLCD to go to a PIC pin. You have it connected to +5v.
treitmey



Joined: 23 Jan 2004
Posts: 1094
Location: Appleton,WI USA

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PostPosted: Thu Dec 14, 2006 12:50 pm     Reply with quote
I think your command data pin is what you call RS.

You've got it connected, so try it and find out. Shouldn't hurt anything.
BOB_SANTANA



Joined: 16 Oct 2006
Posts: 110
Location: HOVE, EAST SUSSEX

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PostPosted: Thu Dec 14, 2006 1:40 pm     Reply with quote
Thanks Guys for the help
I have just followed your advice and it is now working fine
i had to use the following defines as you suggested
Wow this is fun Smile
C is the king i should have started using it years ago
learnt alot from you all.
i am going to try and write a few messages to the display and see


Best Regards


Code:


#ifndef GLCD_CS1
#define GLCD_CS1 PIN_E2   // Chip Selection 1
#endif

#ifndef GLCD_CS2
#define GLCD_CS2 PIN_E1   // Chip Selection 2
#endif

#ifndef GLCD_DI
#define GLCD_DI  PIN_C1   // Data or Instruction input
#endif

#ifndef GLCD_RW
#define GLCD_RW  PIN_C0   // Read/Write
#endif

#ifndef GLCD_E
#define GLCD_E   PIN_E0   // Enable
#endif

#ifndef GLCD_RST
#define GLCD_RST PIN_C0   // Reset
#endif


i am a bit confuse though as my rst line is connected to 5v 0n my proton
development board
i tried i put an attachment with this post but i couldn't to show you what i mean
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