spi.c

Single_Spi-发送Si ngle_Spi-发送Single_Spi-发送

#include "io8535V.h"
#include "macros.h"

void delay()
{
  unsigned int i;
  for(i=0;i<0xff;i++);
}
#pragma interrupt_handler Spi_fun:11

void Spi_fun()
{
  DDRA=0XFF;
  PORTA=0xaa;  
}

void main()
{
  unsigned char j;
  
  DDRB=0XFF;
  PORTB=0XFF;
  
  DDRC=0XFF;
  PORTC=0XFF;
  
  for(j=0;j<128;j++)
  {
    SREG=0X80;
    SPCR=0XF7;
	delay();
	SPDR=j;
  }
  
  DDRB=0XBF;
  PORTB=0XFF;
 for(j=0;j<128;j++)
  {
    SREG=0X00;
    SPCR=0X00;
	SPSR=0X00;
	delay();
	SPDR=PINB;
	PORTC=SPDR;
  }
}