diode

[Sax]

HelIo,

I connected the anode from a diode to the operating voltage and the cathode to a pinx. I need ground to make the diode glow.  How can this be implemented?

[Sax]

This is the overview in SFR:

MODER and IDR have a value.

[AScha.3]

IDR is input data..

MODER looks ok, 440 = pin 3+5 -> output. ODR = 0, outputs lo.

LEDs on ? check voltage at pins 14+16 , with and without your plug connected.

[Sax]

LEDs are not on. No plug no voltage. The problem is because the pins do not allow any current to pass through to ground of the pin.

[Sax]

Hello, thank you for your effort. I found the error. Pins PF3 and PF5 are not suitable for reasons I can't explain. I've bridged in the hardware to 2 other pins and it works.