epphal.c

来自「MSP430和PDID12开发的USB设备程序」· C语言 代码 · 共 45 行

#include <msp430x14x.h>
#include "epphal.h"
  
void delay(void )
{
  unsigned int i;
  for(i=0;i<30;i++)
  ;
}
void outportb(unsigned char Addr, unsigned char Data)
{
  MCU_D12CS_0;
  if(Addr)  A0_COMMAND;
  else A0_DATA;
  
  P5DIR = 0XFF;
  P5OUT = Data;
  D12_WR_0;
  //for(int i=0;i<10;i++);
  _NOP();
  D12_WR_1;
 
  MCU_D12CS_1;  
   //delay();
}

unsigned char inportb(unsigned char Addr)
{
  unsigned char Data;
  MCU_D12CS_0;
  if(Addr)  A0_COMMAND;
  else A0_DATA;
  P5DIR = 0X00;
  D12_RD_0;
  //for(int i=0;i<10;i++);
  _NOP();
  Data = P5IN;
  D12_RD_1;

  MCU_D12CS_1;
  //delay();
   return Data;
  
}