Pin Operationen

Der folgende Code demonstriert den Gebrauch der Header-File “pin.h”, welche den Umgang mit den Mehrzweck-Input-Output-Pins des AVRs vereinfacht.

• pin.h

#include <avr/io.h>
#include "pin.h"
 
#define LED1    PORTPIN(C, 1)
#define BUTTON1 PORTPIN(C, 2)
 
int main(void)
{
	unsigned char x;
 
	// Configuring pin as an output
	pin_setup_output(LED1);
 
	// Setting pin high
	pin_set(LED1);
 
	// Setting pin low
	pin_clear(LED1);
 
	// Setting pin to specified state (1 or 0)
	pin_set_to(LED1, 1);
 
	// Toggling pin state (from high to low and vice versa)
	pin_toggle(LED1);
 
	// Configuring pin as an input
	pin_setup_input(BUTTON1);
 
	// Reading input pin value
	pin_get_value(BUTTON1, x);
}