2 Leds -> how many PIO?

ok, you can try with this macro

# define SET(x,val)

{

unsigned char in_led=IORD_ALTERA_AVALON_PIO_DATA(X_BASE);

unsigned char out_tmp=1<<x;

unsigned char out;

if(val==1){

out=in_led | out_tmp;

}

else{

out=in_led &(~out_tmp);

}

IOWR_ALTERA_AVALON_PIO_DATA(X_BASE , out );\

}

if you want set in 1, only put the macro in your code like the following

SET(0,1)// put in 1 the led 0

SET(1,1)// put in 1 the led 1

SET(0,0)// put in 0 the led 0

SET(1,0)// put in 0 the led 1

or if you want toggle macro, try this

# define TOGGLE_LED(x)

{

unsigned char in_led=IORD_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE);

unsigned char out_tmp=1<<x;

unsigned char out=in_led ^ out_tmp;

IOWR_ALTERA_AVALON_PIO_DATA(LED_PIO_BASE , out);\

}