U23 2007/Inhalt Abend 2/Schieberegister

Schieberegister - Ansteuerung schiebe 1 0 rein und Ausgabe aktiv.

#include <avr/io.h>
#define CP 0
#define DATA 1
#define STROBE 2
#define OE 3
int main(void)
{
       DDRA = 0xFF;
       PORTA = 0x00;
       PORTA |= (1<<STROBE)|(1<<OE);
       PORTA |= (1<<DATA);
       PORTA |= (1<<CP);
       PORTA &= ~(1<<CP);
       PORTA &= ~(1<<DATA);
       PORTA |= (1<<CP);
       PORTA &= ~(1<<CP);
       return 0;
}