mega8_spi.i

AVR学习开发 板

#line 1 "mega8_spi.c"

#line 12 "mega8_spi.c"



void delay(uint ms)
{
    uint i,j;
	for(i=0;i<ms;i++)
	{
	    for(j=0;j<1141;j++);
    }
}





void spi_init()
{
    DDRB|=0x2f;
	SPCR=0X53;
}




void senddat(uchar spi_data)
{
    uchar status;
	SPSR=0;
	PORTB&=~BIT(PB0);
	SPDR=~spi_data;
    while(!(SPSR&=0x80));
	SPSR=0;
	delay(10);
	PORTB|=BIT(PB0);
}