void enable_rx(void)
{
    char i;
   
    
   	spi_write(0x3300);	//command strobe scal
	for(i=0;i<10;i++);
	spi_write(0x3100);	//command strobe sfstxon
	for(i=0;i<10;i++);
	spi_write(0x3400);	//enable rx		
	
	INTCONbits.INT0IF=0;
	INTCONbits.INT0IE=1;
	
	
}
void Transmit(void)
{
	int i;
	unsigned char temp;

	spi_write(0x3eff);		//patable register set RF output power level
 	for(i=0;i<44;i++)
 	{
	 	if(i==0)
		{
			spi_write(0x3f2C);	//send 14 to tx fifo single byte
		}
		else
		{
		   spi_write(0x3f00 | ackStr[i]);
		}
	}
	spi_write(0x3300);		//command strobe scal
	for(i=0;i<10;i++);
	spi_write(0x3100);		//command strobe sfstxon
	for(i=0;i<10;i++);
	spi_write(0x3500);		// enable tx

	i= 0;
	do{
		temp = gdo0;
		delay_ms(3);

		i++;
		if(i>=50)
		{
		  break;
		}
	}while(temp ==0 );	//asserts gdo0 when sync word has been sent
	i = 0;
	do{
		temp = gdo0;
		delay_ms(3);

		i++;
		if(i>=50)
		{
		  break;
		}
	}while(temp ==1);	//deasserts at the end of the packet

	for(i=0;i<500;i++);
	spi_write(0x3b00);	//sftx
	for(i=0;i<10;i++);
	//LED1 = 0;			//to debug transmition
	delay_ms(300) ;
	//LED1 = 1;
	delay_ms(300);	

}