#include<stdio.h>
#include<conio.h>
#include "..\lib\7188.h"

/* ------------------------------------------------------------------- */

void  main()
{
int i1,i2,j,val;
char c;

InitLib();			/* driver initial			     */

InstallCom(1,57600L,8,0,1);	/* COM1, RS-485, half-duplex mode, INT	     */
				/*	 --> need to control 485 direction   */
				/*	 --> initial 485 direction = Receive */
				/*	 Note : JP1 must select RS-485	     */
InstallCom(2,57600L,8,0,1);	/* COM2, RS-485, half-duplex mode, INT	     */
				/*	 --> need to control 485 direction   */
				/*	 --> initial 485 direction = Receive */
/* COM4, RS-232, connect to PC's COM port for download */

Init5DigitLed();		/* initial & blank the 5-digit LED  */
i1=i2=0; j=0; LedOn();		/* red-LED on	*/
for (;;)
    {
    if (IsCom(1)!=0)		/* is COM1 receive any data ?	      */
    if (IsCom(1)==QueueIsNotEmpty) /* is COM1 receive any data ?		       */
       {			/* Yes, receive some data	      */
       val=ReadCom(1);		/* read one character from COM1       */
       Set485DirToTransmit(1);	/* change 485 direction to Transmit   */
       ToCom(1,val);		/* send this character back to COM1   */
				/* --> you will see this character in PC's monitor*/
       WaitTransmitOver(1);	/* wait this character transmit over  */
       Set485DirToReceive(1);	/* change 485 direction to Receive    */

       Show5DigitLed(4,val-'0');
       i1++; i1=i1&0x07; Show5DigitLed(1,i1);
       j++; j=j&0x01; if (j==0) LedOn(); else LedOff();
       }

    if (IsCom(2)==QueueIsNotEmpty) /* is COM2 receive any data ?		       */
       {			/* Yes, receive some data	     */
       val=ReadCom(2);		/* read one character from COM2      */
       Set485DirToTransmit(2);	/* change 485 direction to Transmit  */
       ToCom(2,val);		/* send this character back to COM2  */
				/* --> you will see this character in PC's monitor */
       WaitTransmitOver(2);	/* wait this character transmit over  */
       Set485DirToReceive(2);	/* change 485 direction to Receive  */

       Show5DigitLed(5,val-'0');
       i2++; i2=i2&0x07; Show5DigitLed(2,i2);
       j++; j=j&0x01; if (j==0) LedOn(); else LedOff();
       }

    if (kbhit())		/* is user press PC's keyboard from COM4  */
       {
       c=getch();		/* if this key is Q or Q --> exit this program	*/
       if ((c=='q') || (c=='Q'))
	  {
	  RestoreCom(1);
	  RestoreCom(2);
	  return;
	  }
       }
    }
}