请教有那位前辈帮我看一下我的程序为什么打印的都是乱码,

只看该作者 · 2007-1-3 17:46

sbit prn_busy=P1^3;               //打印机是否忙P3.0
sbit stb=P3^0;                    //数据选通
bit PRN_TAG;
code unsigned char  word_buf1[]="测试时间";

void WAIT_PRN(char tem)          //等待打印机空闲打印一个字符
{
  unsigned char i,prn_return;
  prn_return=0;
  for(i=0;i<40;i++)
  {
    if(prn_busy==0)    //prn_busy=0打印机空闲；prn_busy=1打印机忙
    {

      P2=0x1f;
      P0=tem;
      stb=0;
      _nop_();
      _nop_();
      _nop_();
      stb=1;
      prn_busy=1;
      prn_return=1;
      break;
    }
  }
  if (prn_return==1)
    PRN_TAG=1;     //PRN_TAG=1 打印结束；PRN_TAG=0 打印没有结束
  else
    PRN_TAG=0;
}
void INIT_PRN()           //初始化打印机
{
  WAIT_PRN(0x1B);         //初始化命令
  WAIT_PRN(0x40);
  WAIT_PRN(0x1B);       //
  WAIT_PRN(0x31);
  WAIT_PRN(0xff);
  WAIT_PRN(0x1B);       //
  WAIT_PRN(0x20);
  WAIT_PRN(0x05);
}
void PRN_DISP_0808(bit TYPE,unsigned char *p,unsigned char longness) //打印8*8点阵汉字
{
  unsigned char m;
  m=TYPE;
  WAIT_PRN(0X1B);  //图形打印命令
  WAIT_PRN(0x38);
  WAIT_PRN(0X00);
  for(;longness>0;)
  {
    WAIT_PRN((*p++));    //直接向打印机送内码
  }
  WAIT_PRN(0X0d);
}
main()
{
  delay_time(1);
  INIT_PRN();
  while(1)
  {
    PRN_DISP_0808(1,word_buf1,sizeof(word_buf0));
  }
}

只看该作者 · 2007-1-4 13:24

请教有那位前辈帮我看一下我的程序为什么打印的都是乱码,

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