main.c

微型热敏打印机驱动程序源代码.C语言编写,89C52+

/*****************************************************************************
*				热敏打印机入口模块
*
* 文件名：main.c
* 作者：  肖波		
* 修改记录：2006.12.02
******************************************************************************/

#include "print.h"

extern void init_print(void);
extern void	mainctrl(void);

extern unsigned char bdata STATUS;
extern bit no_paper;
extern bit rece_full;

rece_data txdata;
unsigned char xdata rece_buf[rece_buf_size];

#ifdef downhzk

static unsigned char iRcpStep=0;
static unsigned char bitRcpOver=0;
static unsigned char iRcpBuf=0;
static unsigned long int iHzkStep=0;

#endif

#ifdef hardtest

extern bit ReadFlashString(unsigned long int addr,unsigned char *xpBuf,unsigned int Number);

#endif

void sendsta(unsigned char iSta)          //发送打印状态码(能接收下一个字符:不忙,XON)
{
	TI = 0;
	SBUF = iSta;
	while(!TI); TI = 0;
}
//如果要采用软件或硬件流控制协议,此函数和串口中断均需修正
bit get_rece_data(unsigned char *rece_data)
{
	if(txdata.head==txdata.tail)
    {
        if(rece_full)
        {
    	   *rece_data=read_byte(rece_buf[txdata.head]);
	       txdata.head=(txdata.head+1)%rece_buf_size;
            rece_full=0;
	       return true;
        }
        else {return false;}
    }
	*rece_data=read_byte(rece_buf[txdata.head]);
	txdata.head=(txdata.head+1)%rece_buf_size;

	return true;
}
static void wait_start(void)
{
	unsigned char cmd;  //字符序列 startprint

	while(1)
	{
		while(!get_rece_data(&cmd)); 
		if(cmd!='s') continue;
		sendsta('s');
		while(!get_rece_data(&cmd)); 
		if(cmd!='t') continue;sendsta('t');
		while(!get_rece_data(&cmd)); 
		if(cmd!='a') continue;sendsta('a');
		while(!get_rece_data(&cmd)); 
		if(cmd!='r') continue;sendsta('r');
		while(!get_rece_data(&cmd)); 
		if(cmd!='t') continue;sendsta('t');
		while(!get_rece_data(&cmd)); 
		if(cmd!='p') continue;sendsta('p');
		while(!get_rece_data(&cmd)); 
		if(cmd!='r') continue;sendsta('r');
		while(!get_rece_data(&cmd)); 
		if(cmd!='i') continue;sendsta('i');
		while(!get_rece_data(&cmd)); 
		if(cmd!='n') continue;sendsta('n');
		while(!get_rece_data(&cmd)); 
		if(cmd=='t') break;
	}
	sendsta('t');
}
void main(void)
{
#ifdef hardtest
	unsigned char data loop,test,temp[16];
	unsigned long int data addr;
#endif
	
	AUXR=0X02;                  //STC89C52 DISABLE EXTERN RAM

	STB123 = 0;   STB456 = 0;

   	TMOD = B0001_0001;                     //T0,T1 方式1 16位计数器

//************串行口初始化**************************

	T2CON = B0011_0100;                        //T2波特率发生器
// 	TH2 = RCAP2H = 0xff;                 //BAUT=9600, 11.0592M，
// 	TL2 = RCAP2L = 0xdc;

	TH2 = RCAP2H = 0xff;                 //BAUT=9600, 40M，
 	TL2 = RCAP2L = 0x7e;

	SCON = B0101_0000;                                      //方式1； ren=1:允许串行接受

//**************************************
//  中 断 初 始 化

	IE = B0001_0000;                                        //ES=1,  EA=0
//	IP = B0000_0010;                                        //高优先级：ET0,
	IP = B0001_0000;                                        //高优先级：ES,

	txdata.tail=txdata.head=0;
	
	LED_CTS=0;

	EA = 1;
//	wait_start();
#ifdef hardtest
	
	while(1)
	{
		if(!get_rece_data(&test)) continue;
		sendsta(test);
		switch(test)
		{
		case 0x01:
			while(!get_rece_data(&test));
			addr=(unsigned long int)test<<24;
			while(!get_rece_data(&test));
			addr|=(unsigned long int)test<<16;
			while(!get_rece_data(&test));
			addr|=(unsigned long int)test<<8;
			while(!get_rece_data(&test));
			addr|=(unsigned long int)test;

			if(!ReadFlashString(addr,temp,16)) {sendsta(0x55);break;}
			for(loop=0;loop<16;loop++) sendsta(temp[loop]);
			break;
		}
	}
#endif
#ifdef downhzk

	for(;;)                           //下载字库
	{
		if(bitRcpOver)
		{       ES=0;
		bitRcpOver=0;
		if(iHzkStep==0x0ffff) {sendsta(XON);break;}
		if(WriteFlashString((unsigned long int)iHzkStep*256,txdata.rece_buf,256))
			sendsta(XON);
		else sendsta(XOFF);
		ES=1;
		}
	}
	while(1);
#endif
	
	init_print();
	LED_CTS=1;
	mainctrl();     //主控循环
}

void INT_SIO(void)  interrupt 4            //打印命令或数据
{
#ifdef downhzk
	unsigned char i,icheck;
#endif
	if(!RI)  return;
	RI = 0;
#ifdef downhzk

	i = SBUF;				//i <- 接收的数据
	if(iRcpStep==0)
	{
		icheck = 0;
		bitRcpOver = 0;iRcpStep++;
		if(i==0xaa)return;
		else
		{iRcpStep = 0;  return;}
	}
	if(iRcpStep==1)
	{
		iRcpStep++;
		if(i==0xaa)   return;     //判断报文头
		else
		{iRcpStep = 0;  return;}
	}
	if(iRcpStep==2)
	{
		iRcpStep++;
		icheck ^=i;
		iHzkStep = (unsigned long int)i;
		iHzkStep<<=8;
		return;
	}
	if(iRcpStep==3)
	{
		iRcpStep++;
		icheck ^=i;
		iHzkStep+= (unsigned long int)i;
		if(iHzkStep==0xffff) iRcpStep++;
		return;
	}
	if(iRcpStep==4)
	{
		icheck ^=i;
		txdata.rece_buf[iRcpBuf]=i;
		if(iRcpBuf==0xff) iRcpStep++;
		else iRcpBuf++;
		return;
	}
	if(iRcpStep==5)
	{
		if(icheck ==i)
			bitRcpOver = 1;
		iRcpStep = 0;
		iRcpBuf  = 0;
		icheck = 0;
		return;
	}

#else
       sendsta(SBUF);   //ZS
	rece_buf[txdata.tail]=SBUF;
	//sendsta((&rece_buf[txdata.tail]));
     //  sendsta(rece_buf[txdata.tail]);  //ZS
	txdata.tail=(txdata.tail+1)%rece_buf_size;
	if(txdata.head==txdata.tail)
        rece_full=1;
	return;
#endif
}