I've got the ATTINY 104 evaluation kit (http://ww1.microchip.com/downloa...). See section 1.2
I am very happily using the available Target I/O ports. I'm configuring them for input (DDRB |= 1<<DDRB0;) and turning on LEDs that I've connected to the evaluation board (PORTB |= (1<<PORTB0);)
When I try to repeat this with a Shared I/O port, nothing happens. I assume I need to add more code beyond DDRx and PORTx to configure/use the port, but I can't find what to write.
Thanks for pointers.