Why does the clock stop?

[Acetronics2]

Heuuuuu

What about MCLR ???

" TRISA = %00010000 'PORT A ALL OUTPUTS, EXCEPT MCLR IS INPUT "

You'll laugh ... I run his program on my test board !!! ... and it works ... in real life !!!

see : http://www.picbasic.co.uk/forum/showthread.php?t=3944

Alain

[Russ Kincaid]

So, why does it run on your test board and not on mine?
And, I don't understand CIMCON = 7, it is a register so shouldn't it be
CIMCON = %0001001 ? And what does that do?

My circuit is this: except the switch only goes to ground since I enabled the internal pullups.
Hmmm, I just noticed that my schematic is not up to date: the inputs are RB4 & RB5, the outputs are RB6 & RB7.

[BigWumpus]

So, why does it run on your test board and not on mine?
And, I don't understand CIMCON = 7, it is a register so shouldn't it be
CIMCON = %0001001 ? And what does that do?

My circuit is this: except the switch only goes to ground since I enabled the internal pullups.
Hmmm, I just noticed that my schematic is not up to date: the inputs are RB4 & RB5, the outputs are RB6 & RB7.

1. I see no 0,1uF-ceramic-condensator near the VSS/VDD-pins.

2. I see no bits to turn on the pull-ups inside your program.

3. Read the part on the comperators and the CMCON-register in the manual, tell use what you're CIMCON-register is.

4. Using RB4 ? You has disabled LVP in your fuses ?


...I'm dreaming of mr. eng4444 ! (he's back!!!! ;-) )
Give us more informations, if you want to get some help. Just list your program here!

[Acetronics2]

Hi,Russ

If you use RB2 and RB3 as switches ... and test the led outputs instead of the switches ... There's no chance it could work properly.

I know that doesn't solve the oscillator question ... but ...

Alain

PS : try to work on ONE scheme at a time ... it will be easier for us to follow you !!!

[Russ Kincaid]

Bigwumpus gave me the clue: I disabled low voltage programming and it works! Thanks to all.

Russ