12F508 strange timing

[sayzer]

GP3 is always an input pin no matter what you do.

Also, when you set a pin as an output pin, like you frequently do in your code, the weak pull-up register won't work the next time the same pin is set to be an input pin.

If you assign a pin as an input pin AFTER you set it to an output pin previously, then you need to register to weak pull-up register again.



----------------------------