12f675_fuse_about_to_blow!

[mackrackit]

Interrupt on change (interrupt when the state of a pin changes)
Again this is a snippet from another chip (16F873A) but it will give you something to start with.

ON INTERRUPT GOTO MYINT
INTCON = %10010000   'PORTB.0 CHANGE

DISABLE
MYINT:
IF PORTB.0 = 1 THEN
    ' DO SOMETHING
ELSE
    'DO SOMETHING ELSE
ENDIF
INTCON.1 = 0
RESUME
ENABLE
 'THE ABOVE WILL ALSO DEBOUNCE THE SWITCH

[LEDave]

Cheers mackrackit,

I made a little table up that other newbies who are maybe following this thread might find useful. It hinges on what you said the other day about setting the prescaler (TMR0) and using that with (I = I +1) to set up a delay of your choosing.

BIT TMR0 Time_u_secs HZ
000 1:2 512 976
001 1:4 1024 488
010 1:8 2048 244
011 1:16 4096 122
100 1:32 8192 61
101 1:64 16384 30.5
110 1:128 32768 15.2
111 1:256 65536 7.6

Didn't quite come out as planned and every time I edit it the changes I make it just resets.
Still, I'm sure you get the drift (might be worth checking my figures as well though).


Any thoughts on that LCD?

Dave

[LEDave]

I've just had a thought.

It's probably dangerous for me to offer advice right now, no matter how well intensioned. As some of my conclusions maybe a little off the mark.

Dave

[mackrackit]

I've just had a thought.

It's probably dangerous for me to offer advice right now, no matter how well intensioned. As some of my conclusions maybe a little off the mark.

Dave

Most of mine are, does not stop me...

LCD... Back-light would be nice but I did not see very many options from your supplier. So that is why I was looking at one with four lines.

[LEDave]

Most of mine are, does not stop me...

LCD... Back-light would be nice but I did not see very many options from your supplier. So that is why I was looking at one with four lines.

In the LCD product spec page (15/17) it says:

(8) In particular do not forcibly bend the I/O cable or the backlight cable.

So maybe it does have a backlight?

That's for the display we were looking at:

http://uk.rs-online.com/web/search/s...duct&R=5326795

Page (15/17) in here:

http://docs-europe.origin.electrocom...6b806dda19.pdf

Dave

[mackrackit]

It also list specs for a LED and EL back light.
So I am not sure. Might be worth contacting them to find out.

[LEDave]

Might be worth contacting them to find out.

I'll try and contact the technical department tomorrow.

So what exactly are we after here? I'll try and find out if this one anything else they have exactly fits the bill.

Dave