Weitere Beispiele 31.10.2022

20221031/blink-0a.c

+#include <avr/io.h>
+
+int main (void)
+{
+  DDRD = 0x40;   /* binär: 0100 0000 */
+  PORTD = 0x00;  /* binär: 0000 0000 */
+  while (1);
+  return 0;
+}

20221031/blink-1.c

+#include <avr/io.h>
+
+#define F_CPU 16000000l
+#include <util/delay.h>
+
+int main (void)
+{
+  DDRD = 0x01;
+  PORTD |= 0x01;
+  while (1)
+    {
+      _delay_ms (500);
+      PORTD &= ~0x01;
+      _delay_ms (500);
+      PORTD |= 0x01;
+    }
+  return 0;
+}

20221031/blink-1a.c

+#include <avr/io.h>
+
+#define F_CPU 16000000l
+#include <util/delay.h>
+
+int main (void)
+{
+  DDRD = 0xff;   /* 1111 1111 --> alle Ports als Output-Ports nutzen */
+  PORTD = 0x1a;  /* 0001 1010 */
+  while (1)
+    {
+      _delay_ms (500);
+      PORTD &= ~0x01;
+      _delay_ms (500);
+      PORTD |= 0x01;
+    }
+  return 0;
+}

20221031/blink-1b.c

+#include <avr/io.h>
+
+#define F_CPU 16000000l
+#include <util/delay.h>
+
+int main (void)
+{
+  DDRD = 0x7f;   /* 0111 1111 --> alle Ports als Output-Ports nutzen */
+  PORTD = 0x01;  /* 0000 0001 */
+  while (1)
+    {
+      while (PIND & 0x80)  /* 1000 0000 */
+        {
+          _delay_ms (500);
+          PORTD &= ~0x01;
+          _delay_ms (500);
+          PORTD |= 0x01;
+        }
+    }
+  return 0;
+}