Q: Graphical Lcd Interface

C

Chris

Guest
I'm having problems on finding out if a pg12864 parallel lcd can be
driven by just 2 or 3 wires, has anyone seen this done? I was thinking
as an alternative to use a second pic to handle ui and lcd driving as an
alternative...

any thoughts / ideas?
 
On Mon, 27 Sep 2004 08:45:34 -0400, in sci.electronics.design you
wrote:

I'm having problems on finding out if a pg12864 parallel lcd can be
driven by just 2 or 3 wires, has anyone seen this done? I was thinking
as an alternative to use a second pic to handle ui and lcd driving as an
alternative...

any thoughts / ideas?
use a shift register, say HC 595, sort of a simple 3 wire
Click to expand...
interface.data, clock and load.
If you can run the LCD in 4 bit mode it should be easy



martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.
 
On Mon, 27 Sep 2004 08:45:34 -0400, in sci.electronics.design you
wrote:

I'm having problems on finding out if a pg12864 parallel lcd can be
driven by just 2 or 3 wires, has anyone seen this done? I was thinking
as an alternative to use a second pic to handle ui and lcd driving as an
alternative...

any thoughts / ideas?
ignore last post, forgot the "Graphical" side of it
Click to expand...



martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.
 
Right, shift register/4bit mode for a text interface, but for a graphics
anyone have any ideas?


I'm sort of leaning towards the seperate pic idea, instead of wasting
program space on the main pic for ui code.


martin griffith wrote:

On Mon, 27 Sep 2004 08:45:34 -0400, in sci.electronics.design you
wrote:


I'm having problems on finding out if a pg12864 parallel lcd can be
driven by just 2 or 3 wires, has anyone seen this done? I was thinking
as an alternative to use a second pic to handle ui and lcd driving as an
alternative...

any thoughts / ideas?

ignore last post, forgot the "Graphical" side of it



martin

Serious error.
All shortcuts have disappeared.
Screen. Mind. Both are blank.
Click to expand...
 
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