Going through Nigel's tutorials, I've got each pin of PORTA wired to an LED (and a resistor), everything works but RA4 does not light up. Someone has suggested sinking current and driving the LED's with a transistor since the chip can sink more than it can send but I would like to figure this out.
In the data sheet for this PIC...
"Pin RA4 is multiplexed with the Timer0 module clock input to become the RA4/T0CKI pin. The RA4/T0CKI pin is a Schmitt Trigger input and an open-drain output. All other PORTA pins have TTL input levels and full CMOS output drivers."
What does that mean exactly? Setting PORTA to output is not enough for RA4?
Thanks, enjoyed my time on the site and have learned alot already.