Difference between revisions of "U23 2008-2/Gruppe4"

Revision as of 21:14, 30 October 2008

Mitglieder

Christian
Steffen
Stefan
Martin

1. Projektabend (20. Oktober)

Aufgabe

Eine LED soll zum leuchten gebracht werden.

Code: <source lang ="c">

include <avr/io.h>

int main(void) {

 /* PC4 als Ausgang konfig. */
 DDRC = &b10000; 

 /* PC4 auf high setzen */
 PORTC = &b10000;

 /* Endlosschleife */
 while(1){
 }

}

</source>

Aufgabe zur Vorbereitung

Eine LED Sequenz

Code: <source lang ="c">

include <avr/io.h>
include <util/delay.h>

static void led_ausgabe(uint8_t led, uint16_t zeit);

int main(void) {

 uint16_t  anzeigedauer = 1000;

 /* Ausgaenge konfig. */

 DDRC = (1 << DDC4);
 DDRD = (1 << DDD3) | (1 << DDD6) | (1 << DDD7); 


 /* Animation */
 while(1){
 led_ausgabe (0b1000,anzeigedauer);
 led_ausgabe (0b0100,anzeigedauer);
 led_ausgabe (0b0010,anzeigedauer);
 led_ausgabe (0b0001,anzeigedauer);
 }

}

static void led_ausgabe(uint8_t led, uint16_t zeit) {

 if (led & 0b1){
   PORTC |= (1 << DDC4); }
   else{
     PORTC &= ~(1 << DDC4);}

 if (led & 0b10){
   PORTD |= (1 << DDD3);}
   else{
     PORTD &= ~(1 << DDD3);}

 if (led & 0b100){
   PORTD |= (1 << DDD6);}
   else{
     PORTD &= ~(1 << DDD6);}

 if (led & 0b1000){
   PORTD |= (1 << DDD7);}
   else{
     PORTD &= ~(1 << DDD7);}
  
  _delay_ms(zeit);

} </source>

2. Projektabend (27. Oktober)

IR RC-5 Aufbau

Aufgabe

Code: <source lang ="c">

include <avr/io.h>
include <string.h>
include <stdio.h>
include <avr/pgmspace.h>
include "uart.h"

static void zeitmessen();

int main(void) {

   uint8_t status;
   status = 0;

   /* initialize serial uart */
   uart_init();

   /* configure irrx as input */
   DDRC &= ~_BV(PC3);

   /* init led pin as output */
   DDRD |= _BV(PD3);

   while(1) {
       /* if ir rx is high, turn off led */
       if (PINC & _BV(PC3))

{

           if (status==1)

{ uart_printf("aus"); status=0; }

PORTD &= ~_BV(PD3); } else { if (status==0) { uart_printf("an"); status=1; }

PORTD |= _BV(PD3); }

}

static void zeitmessen() {

} </source>