hard.c

里面是D12与c51的接口程序

#include <stdio.h>
#include <intrins.h>

#include <reg52.h>           

#include "hard.h"
#include "D12.h"
#include "main.h"


sbit A0=P2^0;

extern EPPFLAGS bEPPflags;

void outportb(unsigned char port, unsigned char val)
{
   if(port) A0=D12_COMMAND ;//判断是数据还是命令
   else A0=D12_DATA;
   WR=1;
   RD=1;
   DATA_BUS=val;//写端口
   WR=0;
   RD=1;
  _nop_();
   WR=1;
	 
}

unsigned char inportb(void)
{
	 unsigned char c;

	 WR=1;
  	 RD=0;
	 c=DATA_BUS;//读数据
	 _nop_();
	 RD=1;
	 return c;
}