kprp.c

一款收款机C源代码！因为是几年前的代码了

/*==============================================================================
 *	File Name:	kprp.c
 *	功能: 		服务于Kitchen Printer/Receipt Printer
 *	2006-9-6 16:27
 *============================================================================*/

#include    "ecrsys.h"
#include 	"ftype.h"
#include 	"data.h"
#include	"sysdata.h"

extern	volatile byte uart0_Sending ;
extern	volatile byte uart1_Sending ;
extern	volatile byte uart2_Sending ;
extern	volatile byte uart3_Sending ;
extern	volatile byte uart4_Sending ;
/*=============================================================================
*	According to the KP/RP send data, check the ON/OFF
*  status of it.
*	打印机端口，不存储任何数据于缓冲区。
*	在KP/RP送入数据给主机的时候,主机检查KP/RP所送的数据是否为XON/XOFF控制字
*	2006-9-6 17:25
*=============================================================================*/
void	KPRP_XonOffChk(byte ch)
{
	switch(ch)
	{
		case	XON:
			fl_kp_rp_busy = 0;						 /*printer not busy */
			uc_kp_wait_timer = 0;	/* no need spy the kp wait time */
			kp_clr_cntr = 0;			  					  /*total 3 times*/
			break;
		case	XOFF:
			fl_kp_rp_busy = 1;								/*kp is busy*/
			uc_kp_wait_timer = KP_WAIT_TM;
			break;
		default:
			break;
	}
}

/*==================================================
*	Send data to uart send register according to the 
*  KP/RP status
*	If KP/RP during the busy status, then stop send
*  Else  Send to send buffer
*	2004-10-15 18:12
*=================================================*/
void	KPRP_SendDataWithChk(byte port)
{
	if (!fl_kp_rp_busy) 
	{
		Uart_Send_Data(port);
	}
	else 
	{
		switch(port)
		{
		case	PORT0:		/*Clear the during sending flag*/
			uart0_Sending = 0;
			break;

		case	PORT1:
			uart0_Sending = 0;
			break;

		case	PORT2:
			uart0_Sending = 0;
			break;

		case	PORT3:
			uart0_Sending = 0;
			break;

		case	PORT4:
			uart0_Sending = 0;
			break;

		default:
			break;
		}
	}
}


/******************************************************************************
*	Check the KP/RP busy condition when the buffer is full.
* 	If still in XOFF mode, then waiting until the the timer out or xon comes.
*	
*	检查KP/RP是否处于忙的状态,如果是,则报错并等待,如果报错次数超过3次,则清除发送
*   缓冲区中的数据
*	2006-9-6 17:30
*****************************************************************************/

/*此函数还需要重新改写才可以	2006-9-6 17:32  ZhengXiaoChun*/
CHR	KPRP_BusyChk(void)
{
	CHR	i,j;
	CHR	port = 0;
	CHR	ch = OK;
	WORD  tmp = ERR_KP_TM_OUT;
	CHR	error_str[MAX_LCD_NUM];
	
	if ( fl_kp_tm_out == 1 )
	{
		fl_kp_tm_out = 0;
		error_str[0] = 'E';
		for(i = 3; i > 0; i --)
		{
			j = tmp%10;
			tmp /= 10;
			error_str[i] = j + '0';
		}
		error_str[4] = '\0';
   	    VFDDisplay(error_str, CLEARD, LEFT);		/* Display the error information */
   	    bellcnt = 0xFE;
   	
		while(GetKey_Ex() != KD_CLEAR);		/*here wait the Clear key */
		uc_kp_wait_timer = KP_WAIT_TM;
		Clr_Dsp_Data();							/*clear the screen*/
		RightDisp(0L, sysflag->sysdots);		/*display 0.00*/
		if ( ++ kp_clr_cntr == MAX_KP_WAIT_CNTR )
        {	/*total 3 times can be used for clear*/
			kp_clr_cntr = 0;
			uc_kp_wait_timer = 0;
			if ((port_sel1 == DEV_TYPE_KP) || (port_sel1 == DEV_TYPE_RP ))
				port = PORT0;
			else if ((port_sel2 == DEV_TYPE_KP) || (port_sel2 == DEV_TYPE_RP ))
				port = PORT1;				/*only one port can be linked to uart*/

			ClrWrBuf(port);				/*Clear the send buffer*/
			ch = KD_KP_RP_BUSY;
		}
	}
	return(ch);
}