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微型打印机的C语言源程序

消耗积分:10 | 格式:rar | 大小:333 | 2008-12-13

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微型打印机的C语言源程序:
微型打印机的C51源程序
#define uchar unsigned char
#define uint unsigned int
#include
#include
#include
#include
#include
#include
#include
#define PIN XBYTE[0x8000]
#define POUT XBYTE[0x9000]
sbit PRINTSTB =P1^6;
sbit DOG=P1^7;
bdata char pin&#118alue;
sbit PRINTBUSY=pin&#118alue^7;
sbit PRINTSEL =pin&#118alue^6;
sbit PRINTERR =pin&#118alue^5;
sbit PRINTACK =pin&#118alue^4;
  
void PrintString(uchar *String1,uchar *String2);
void initprint(void);
void print(uchar a);
  
void initprint(void) //打印机初始化子程序
{
  pin&#118alue=PIN;
  if((PRINTSEL==1)&&(PRINTERR==1))
  {
    print(0x1b); print(0x40); print(0x1b); print(0x38); print(0x4);
  }
}
void print(uchar a) //打印字符a
{
  pin&#118alue=PIN;
  if((PRINTSEL==0)||(PRINTERR==0)) return;
  for(;;) {
    DOG=~DOG;
    pin&#118alue=PIN;
    if(PRINTBUSY==0) break;
  }
  DOG=~DOG;
  POUT=a;
  PRINTSTB=1;  PRINTSTB=1;  PRINTSTB=1;  PRINTSTB=1;
  PRINTSTB=0;  PRINTSTB=0;  PRINTSTB=0;  PRINTSTB=0;
  PRINTSTB=1;
}
void PrintString(uchar *String) //打印字符串后回车
{
  uchar CH;
  for (;;) {
   DOG=~DOG;
   CH=*String;
   if (CH==0) { print(0x0d); break; }
   print(CH);
   String++;
  }
  initprint();
}

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