spi._c

spi的i/o茉莉程序

#include <iom8v.h>
#include "uart.h"
#include "mytype.h"
#include "spi.h"


extern uint8 table[];

void Spi_init(void)
{
DDR1=((1<<WP)|(1<<SO)|(1<<SCLK)|(1<<CS));
SPCR=((1<<SPE)|(1<<MSTR)|(1<<SPR0));
WP_1;
}

void Spi_MT(uint8 data)
{
SPDR=data;
while(!(SPSR&(1<<SPIF)));
}

uint8 Spi_MR()
{
uint8 data;
data=SPDR;
SPDR=data;
while(!(SPSR&(1<<SPIF)));
Prints("Get data Readdata...",1);
Send_abyte(table[SPDR/16]);
Send_abyte(table[SPDR/16]);
return SPDR;
}