serial2.c

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//-------------- Command from PC to control MCU' LED,and Character	Send to PC  -----------	\\
//	2007.9.15

#include "DeviceInit.c"
#include "string.h"

bit bdata SendFlag	= 0;
sbit LED			= P0^0;

void main(void)			    
{

	unsigned char Test[]		= {"ABCDEFGHI GKLMNOPQRST "}; 
	unsigned char data *block	= Test;
	unsigned char length		= 0;
	unsigned char RecTemp		= 0;
 		  
    PCA0MD  &= ~0x40;		//	Clear Watchdog Enable

    Init_Device();    		//	Initialize Device
	length	= strlen(block);
	TI0		= 1;
	while(1)
	{
	  	if(SendFlag && length)		//	Send data to PC 
		{
			SBUF0		= *block++;
			SendFlag	= 0;
			length--;
		}

		if(RI0)					  	//	Receive data form PC
		{	
			RI0			= 0;		
			RecTemp		= SBUF0;
		}
				
		if(RecTemp == 'a')		   //	Command form PC
		{
			LED	= 0;
		}
		if(RecTemp == 'b')
		{

			LED = 1;
		}

	}
}

 



void UATR_INT(void) interrupt 4 using 3 //  Interrupt For Serial Communication
{

	TI0     	= 0;    				     
	SendFlag	= 1;
}