打印机1.c

串行打印机的驱动

#include<reg51.h>
#include<string.h>
#include<INTRINS.H>
sbit STB=P1^0;                  //PSTB 接P1^0
sbit BUSY=P1^2;                 //PBUSY 接P1^2
/************** 并口打印子程序**************/
void pprint(unsigned char ch)
{
 while(BUSY)
 {};
 P0=ch;
 STB=0; //STB 置0
 _nop_();
 _nop_();
 STB=1; //STB 置1
}
/****************打印直线 *******************/
 void ESC2(int len)//热敏打印命令
{
 int i;
 if(len-256>0)
 {
   pprint(0x1b);pprint(0x27);pprint(len-256);pprint(1);
   for(i=len-256-1;i>=0;i--)
   {
   pprint(i);pprint(1);
   }
   for(i=0;i<256;i++)
   {
   pprint(i);pprint(0);
   }
   pprint(0x0d);
  }
 else
 {
   pprint(0x1b);pprint(0x27); pprint(len);pprint(0);
   for(i=len-1;i>=0;i--) 
   {
   pprint(i);pprint(0);
    }
   pprint(0x0d);
  }
}
/****************自定义字符*****************/		  
void ESC1()
{
  pprint(0X1b);pprint(36);					//选择字符集1																			  
  pprint('A');pprint('B');pprint('C');		//打印ABC
  pprint(0X0A);								//换行

  pprint(0X1B);pprint(0X26);pprint(0X42);pprint(0X02);pprint(0X7C);pprint(0X40);pprint(0XC0);pprint(0X40);pprint(0);					  //自定义字符
  pprint(0X1B);pprint(0X25);pprint(0X42);pprint('A') ;pprint(0x00); 	   //替换用户定义字符
 // pprint(0X1b);pprint(36);					//选择字符集1
  pprint(0x41);pprint('B');pprint('C');		//打印ABC
  pprint(0X1B);pprint(0X3A);					//恢复字符集中的字符
  pprint('A');pprint('B');pprint('C');
}
/**************主函数***********************/
main()
{while(1)
 {
 int i;
 char ch[]="苏果超市欢迎您！";
 pprint(0x1b);pprint(0x38);					//选择不同点阵汉子打印
 //pprint(0x1c);pprint(0x4a);				//设置纵向打印
//pprint(0x1c);pprint(0x49);pprint(0x01b);	//设置字符旋转90度
pprint(0x1b);pprint(0x57);pprint(0x02);		//横向纵向放大2倍
 //pprint(0x1b);pprint(0x63);pprint(0x01);		//允许反向打印
 //pprint(0x1b);pprint(0x69);pprint(0x01);	//允许反白打印
 //pprint(0x1b);pprint(0x2d);pprint(0x01);		//允许下划线打印
pprint(0x1b);pprint(0x72);pprint(0x2b);pprint(0x3f);	 //打印深度变浅
 //pprint(0x1b);pprint(0x27);pprint(0x05);pprint(0x05);pprint(0x38);pprint(0x7c);pprint(0x30);pprint(0x58);pprint(0x14);pprint(0x34);pprint(0x88);pprint(0x6c);pprint(0x41);pprint(0xab);	
 //pprint(0x1b);pprint(0x26);pprint(0x32);pprint(0x54);pprint(0x38);pprint(0x7c);pprint(0x30);pprint(0x58);pprint(0x14);				  //自定义字符
 //pprint(0x1b);pprint(0x45);pprint(0x40);pprint(0x34);pprint(0x88);pprint(0x6c);pprint(0x41);pprint(0xab);pprint(0x00);				  //打印条形码

 pprint(0x00);                               //调用汉字出库指令
 for(i=0;i<strlen(ch);i++)
 pprint(ch[i]);
//ESC1();
//ESC2(0xfd);
pprint(0x0d);                               //回车
 };
}