Difference between revisions of "U23 2007/Inhalt Abend 2/Schieberegister"
< U23 2007 | Inhalt Abend 2
| Line 29: | Line 29: | ||
PORTA = 0x0F; | PORTA = 0x0F; | ||
PORTA = 0x0E; | PORTA = 0x0E; | ||
| − | + | ||
| − | |||
return 0; | return 0; | ||
} | } | ||
Revision as of 21:44, 14 May 2007
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;
}
Schieberegister - Ansteuerung
setzte 1 rein und Ausgabe an!
int main(void)
{
DDRA = 0xFF;
PORTA = 0x0E;
PORTA = 0x0F;
PORTA = 0x0E;
return 0;
}
