Stupid simple question.....

[chien_fu]

I'm trying to make a button work...
here is my test code:

input Pin4

loop:

if Pin4 = 1 then cycle

goto loop


cycle:

if Pin4 = 0 then loop

high 0 : pause 100
high 1 : pause 100
high 2 : pause 100
low 0 : pause 100
low 1 : pause 100
low 2 : pause 100


goto cycle


end

When I connect pin4 to high nothing happens... Do I need to pull the pin high or low or something? Should I have something other than the "input Pin4" command?

This seems like it should be super fricking simple, but it just doesn't work... I feel like I'm taking crazy pills!! Someone please help.

[Darrel Taylor]

Pin4 is usually PORTB.4, and not actually Pin4 on the chip.

Which chip are you using?
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[chien_fu]

I'm using a 12F683, GP4 (which I believe is the same as PORTB.4?) is Pin3.

[chien_fu]

I could use some help here... I am completely at a loss. I can't get any input to work at all, am I going crazy?

[Darrel Taylor]

For a 12F683, you need to turn off the Analog inputs and Comparator.

SYMBOL ANSEL = $9F
SYMBOL CMCON0 = $19

POKE ANSEL, 0
POKE CMCON0, 7

hth,

[chien_fu]

I cannot express enough gratitude. It works! Thank you so much kind sir. Now where might one learn a bit of information like that? That seems fairly basic, but I don't recall coming across that in any of my "pic'n" books or the 12F datasheet...