I/O资源不足怎么办？

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CallReceiver| 高级工程师

楼主 | 2016-9-10 13:33 | 只看该作者回帖奖励

|倒序浏览 |阅读模式

I/O, unsigned, define, dc, ge

#include"reg52.h"

#define uchar unsigned char
uchar dd[]="Electronic Of SX";
uchar dd1[]="Science collage";
sbit rs=P2^3;
sbit en=P2^4;
sbit sh=P2^1;
sbit st=P2^2;
sbit DO=P2^0;
sbit cr=P2^5;
void delay(unsigned int  ss)
{
  while(ss--);
}
void w1602c(uchar dat)
{
  char i;
  P2 &=~0x1f;
  for(i=8;i>0;i--)
{
      if((dat & (1<<(i-1)))==(1<<(i-1)))
      DO=1;
      else
      DO=0;
        sh=1;
        sh=0;

        st=1;
        st=0;
}
delay(4);
en=1;
delay(4);
en=0;
}

void w1602d(uchar dat)
{
  char i;
      P2 |=0x08;
  P2 &=~0x7;
  for(i=8;i>0;i--)
{
      if((dat & (1<<(i-1)))==(1<<(i-1)))
      DO=1;
      else
      DO=0;
        sh=1;
        sh=0;

        st=1;
        st=0;
}
delay(5);
en=1;
delay(5);
en=0;
}
void init1602()
{
w1602c(0x38);
w1602c(0x06);
w1602c(0x0c);
w1602c(0x01);
}
void main()
{
  char n;
  init1602();
  while(1)
  {
  w1602c(0x80);
  for(n=0;n<16;n++)
w1602d(dd[n]);

      w1602c(0xc0);
  for(n=0;n<16;n++)
w1602d(dd1[n]);
  }
}

使用特权