CM5 turn LED on ??

[ben2008]

Hi and sorry,
this question is very common i guess, but i did not find an answer in at least 2h.

how can i turn an LED on the CM5 (atmega128) on?

I already programmed a lot with AVR and C and get my robo to do funny things ... i also got an time interrupt .. but ... i dont get that leds to blink ...

i tried something like this

Code: Select all

DDRE = 0;              //set port E to input direction
PORTE |= _BV(PE4);    //enable pull-up resistor 4
EIMSK |= _BV(INT4);   //enable interrupt 4

PORTD = PIND ^ ( 1 << PD7 );
   
PORTC &= ~_BV(PC3);  //turns AUX-LED on
PORTC &= ~_BV(PC4);  //turns AUX-LED on
PORTC &= ~_BV(PC5);  //turns AUX-LED on
PORTC &= ~_BV(PC6);  //turns AUX-LED on


I dont know exactly what i am doing by editing PORTC oder DDRE but i only want to get that led on (any led on the cm5)