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標(biāo)題: C語(yǔ)言在Dis_str(i,0,*p)處報(bào)錯(cuò)指針轉(zhuǎn)換錯(cuò)誤怎么改 [打印本頁(yè)]

作者: 李博文 時(shí)間: 2018-12-17 20:21
標(biāo)題: C語(yǔ)言在Dis_str(i,0,*p)處報(bào)錯(cuò)指針轉(zhuǎn)換錯(cuò)誤怎么改
#include <reg52.h>
#include<intrins.h>

typedef unsigned char uchar;
typedef unsigned int uint;

sbit RS = P3^5;
sbit RW = P3^6;
sbit EN = P3^4;

#define LCD1602_A P0

void delay_ms(uint n)
{
uint i,y;
for(i=n;i>0;i--)
      {
  for(y=114;y>0;y--);
      }
}

void Read_busy()
{
uchar busy;
      LCD1602_A = 0xff;
      RS = 0;
      RW = 1;
      do{
         EN = 1;
               busy = LCD1602_A;
               EN = 0;
      }while(busy & 0x80);
}

void Write_cmd(uchar cmd)
  {
Read_busy();
      RS = 0;
            RW = 0;
            LCD1602_A = cmd;
            EN = 1;
            EN = 0;
}

void Write_dat(uchar dat)
{
  Read_busy();
      RS = 1;
      RW = 0;
      LCD1602_A = dat;
      EN = 1;
      EN = 0;
}

void Dis_onechar(uchar x, uchar y, uchar dat)
{
if(y) x |= 0x40;
         x |= 0x80;
      Write_cmd(x);
      Write_dat(dat);
}

void Dis_str(uchar x, uchar y, uchar *str)
{
if(y) x |= 0x40;
         x |= 0x80;
      Write_cmd(x);
      while(*str != '\0')
      {
         Write_dat(*str++);
      }
}

void Init_LCD1602()
{
Write_cmd(0x38);
      Write_cmd(0x0c);
      Write_cmd(0x06);
      Write_cmd(0x01);
}
void main()
{
      while(1)
      {
      uchar i = 1;
      uchar str[20]={"Just do it ! "} ;
      uchar *p;
      p = str;
      Init_LCD1602();
      while(1)
{
  Dis_str(i,0,*p);
      i++;
      P++;
      delay_ms(1000);
      }
      delay_ms(1000);
  }
}

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