pio_example1_rainbow_lights.c

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#include <avr32/io.h>
#include "pio_defines.h"

#define CPU_HZ          27000000
#define NoCOLORS        8

/* leds */
#define left 0
#define right 1

/* colors */
#define black 0x00
#define red 0x01
#define green 0x04
#define yellow 0x05
#define blue 0x10
#define purple 0x11
#define light_blue 0x14
#define white 0x15

int color_array[NoCOLORS]={black,purple,blue,light_blue,green,yellow,red,white};

void delay( void );
int rgb_leds(struct avr32_pio_t * pio, int pos, int color);


int main( void )
{
  int i,j;
  avr32_pio_t *piob = (void *) AVR32_PIOC_ADDRESS;

  piob->per = 0x000000ff;
  piob->oer = 0x000000ff;
  piob->idr = 0x000000ff;



  while(1){
    for(i=0; i<NoCOLORS; i++){
      rgb_leds(piob, left, i);
      for(j=0; j<NoCOLORS; j++){
        rgb_leds(piob, right,j);
        delay();
      }
      delay();
    }
  }
}
void delay( void )
{
  unsigned long i;
  for (i=0; i<100000; i++);
}
int rgb_leds(struct avr32_pio_t * pio, int pos, int col_pos)
{
        if( (pos>1) | (pos<0) | (col_pos>NoCOLORS) | (col_pos<0) )
                return PIO_INVALID_ARGUMENT;

        pio->codr = 0x00000015<<pos;
        pio->sodr = color_array[col_pos]<<pos;

        return 0;
}

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