include avr io include avr delay static void avr_init void int main vo

  • Anonymous
  • C
  • 24 Apr 2008 
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#include <avr/io.h>

#include <avr/delay.h>



static void avr_init(void);





int main(void)

{

 	avr_init();



    unsigned char tmp;



	PORTB=0b00000100;

	_delay_ms(100);

	PORTB=0b00000000;

	_delay_ms(100);

	PORTB=0b00000100;

	_delay_ms(100);

	PORTB=0b00000100;



    for(;;)

    {

		tmp=PINB&0b00011000;



		switch (tmp)

		{

		case 0b00011000:

		

			PORTB=0b00000100;

			break;



		case 0b00010000:



			PORTB=0b00000110;

			break;



		case 0b00001000:



			PORTB=0b00000101;

			break;



		case 0b00000000:



			PORTB=0b00000100;

			break;

		}

    }

    return(0);

}





static void avr_init(void)

{

	DDRB=0b00000111;

	PORTB=0b00000000;

    return;

}
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