epphal.c

来自「使用MSP430的IAR开发环境」· C语言 代码 · 共 35 行

#include <msp430x13x.h>
#include "epphal.h"
  
void outportb(unsigned char Addr, unsigned char Data)
{
  MCU_D12CS_0;
  if(Addr)  A0_COMMAND;
  else A0_DATA;
  
  P4DIR = 0XFF;
  P4OUT = Data;
  D12_WR_0;
  _NOP();
  D12_WR_1;
  MCU_D12CS_1;  
}

unsigned char inportb(unsigned char Addr)
{
  unsigned char Data;
  MCU_D12CS_0;
  if(Addr)  A0_COMMAND;
  else A0_DATA;
  
  P4DIR = 0X00;
  D12_RD_0;
  _NOP();
  Data = P4IN;
  D12_RD_1;
  MCU_D12CS_1;

   return Data;
  
}