slave_1

#include <avr/io.h>
#include <util/delay.h>



void spi_init_slave (void)
{

    SPCR= (1<<SPE);

}

unsigned char  spi_transmitreceive(unsigned char data)
{
    SPDR = data;

    while(!(SPSR &(1<<SPIF)));

    return (SPDR);

}


int main(void)
{
     DDRB=0b01000000;

     spi_init_slave();

     DDRC=0xFF;
     PORTC=0;



    unsigned char k;
    unsigned char l=1;



    while(1)
    {

            k = spi_transmitreceive(l);

            PORTC=k;

            _delay_ms(500);


     }
}