spi.c

来自「58enc28j06protuesuip09.rar」· C语言 代码 · 共 30 行

#include "uip.h"
#include "spi.h"

void WriteByte(u8_t temp)
{
  idata u8_t i;
  for(i=0;i<8;i++)
  {
	SCK=0;
    SI = temp & 0x80;
	SCK=1;
	temp <<=1;
  }
  SCK=0;
}

u8_t ReadByte(void)
{
  idata u8_t i,dat1;
  SCK=0;dat1=0;
  for(i=0;i<8;i++)
  {	
	SCK=1;
	dat1 <<=1;
    dat1 |= SO; 
	SCK=0;	
  }
  return dat1;
}