pio_example2_dip_switch_lights.c File Reference

#include <avr32/morgan.h>
#include <avr32/pio.h>

Include dependency graph for pio_example2_dip_switch_lights.c:

Go to the source code of this file.

Defines
#define	black   0x00
#define	blue   0x10
#define	green   0x04
#define	INPUT_BITMASK   0x0000ff00
#define	light_blue   0x14
#define	OUTPUT_BITMASK   0x000000ff
#define	purple   0x11
#define	red   0x01
#define	white   0x15
#define	yellow   0x05
Functions
int	main (void)
Variables
char	color_array [8] = {black,purple,blue,light_blue,green,yellow,red,white}

---

Define Documentation

#define black   0x00

Definition at line 5 of file pio_example2_dip_switch_lights.c.

#define blue   0x10

Definition at line 9 of file pio_example2_dip_switch_lights.c.

#define green   0x04

Definition at line 7 of file pio_example2_dip_switch_lights.c.

#define INPUT_BITMASK   0x0000ff00

Definition at line 16 of file pio_example2_dip_switch_lights.c.

#define light_blue   0x14

Definition at line 11 of file pio_example2_dip_switch_lights.c.

#define OUTPUT_BITMASK   0x000000ff

Definition at line 17 of file pio_example2_dip_switch_lights.c.

#define purple   0x11

Definition at line 10 of file pio_example2_dip_switch_lights.c.

#define red   0x01

Definition at line 6 of file pio_example2_dip_switch_lights.c.

#define white   0x15

Definition at line 12 of file pio_example2_dip_switch_lights.c.

#define yellow   0x05

Definition at line 8 of file pio_example2_dip_switch_lights.c.

---

Function Documentation

int main

(

void

)

This function will read the dip switches on the STK1000 and put the status out on the leds. To get it to work, you must connect the input and output correctly on the STK1000. The input (switches) header marked J25 must be connected to the header labeled J2 (PORTB[15..8]). While the output (leds) header marked J15 must be connected to the header marked J1 (PORTB[7..])

Parameters:

none

Returns:

none

Definition at line 28 of file pio_example2_dip_switch_lights.c.

References INPUT_BITMASK, OUTPUT_BITMASK, and piob.

{
  avr32_pio_t *piob = (void *) AVR32_PIOB;
  char input, output;

  /* SET PIO */
  piob->pdr = 0x00000000; /* Enable entire PORTB for PIO controlled operation */
  piob->oer = OUTPUT_BITMASK; /* Use PORTB[15..8] as output */
  piob->odr = INPUT_BITMASK; /* Use PORTB[7..0] as input */
  piob->ifer = INPUT_BITMASK; /*Glitch enable on input */
  piob->codr = 0xFFFFffff; /* Clear all appropriate pins */

  while(1){
        /* read input and output */
        input = (~(piob->pdsr >> 8) & OUTPUT_BITMASK);
    output = (piob->pdsr) & OUTPUT_BITMASK;

        /* check if a change has occured */
    if( input != output){
                /* Clear the output data */
                piob->codr = OUTPUT_BITMASK;
                /* Set output data according to the input */
                piob->sodr = input;
    } //if
  }//while
}//main

---

Variable Documentation

char color_array[8] = {black,purple,blue,light_blue,green,yellow,red,white}

Definition at line 14 of file pio_example2_dip_switch_lights.c.

---