16F883/886 Help

[skimask]

When I move this to the breadboard, there seems to be a small leakage of current when I release the button to stop the pulsing.

I am beginning to think it's a problem with the interupts but the datasheet states they are disabled on reset. Below is the beginning of my code.

Yes, datasheet says interrupts are disabled on reset...
How about cap's across Vdd/Vss? And maybe a few other sprinkled around between your PIC and the power supply? How stout is your power supply?

[plyrathrt]

3V. The datasheet shows a minimal 2v.

[plyrathrt]

Ok, I have found that it is leaking voltage somehow when the pin is told to go low. I tried reversing the pin state to a input instead of lowing it, but it will not flash the LED at all when i do that. So basicly high LED : PAUSEUS 60000 : REVERSE LED will not make it flash.

Anything I am missing that would cause me no to be able to change the state of that pin?

[plyrathrt]

Ok, if this thing pisses me off any more, I have the option to move to a 18F2221 or 18F4321.

How to I put RA0,RA1,RA2,RA3, RB0,RB1, and RB3 as inputs?

The rest need to be outputs and go HIGH but a couple may need to be flipped to inputs for one reason or another. All inputs and outputs must be digital.

The 18F is a huge pic that I have absolutely no experience with (and I am only intermediate with 16F and 12F series).

[Archangel]

How to I put RA0,RA1,RA2,RA3, RB0,RB1, and RB3 as inputs?

RA 7 6 5 4 3 2 1 0
see bits below

TrisA =%00001111               ' RA  0:3 as inputs RA 4:7 as outputs in binary
OR
TrisA = $0F                    ' same thing in HEX
or
TrisA = 15                     ' same thing in DECIMAL
TrisB = %00001011              ' PortB 0,1,3 as inputs

I like binary because it is easy to see at a glance, 1s are inputs, 0s are outputs
Edit: Doh!, Port calls hi / low status of output, TRIS register determines Input/Output

[plyrathrt]

Setting Tris registers isn't the problem. It's making sure that the inputs are "digital" and the outputs are setup right.

18F's use the ADCON0, ADCON1 to select pins as digital but it doesn't seem to be working for me.

I am more concerned with getting the 16F883 working properly because atleast that series I am decent with.

As you can see, I like binary too. Way easier to understand atleast for me.