[jgannon]

Originally Posted by The Lucas

Could you post your InterruptHandlerLow code? As I remember it took a little work to get those "Port B" interrupts working.

I'm not sure if it is in violation of Kevin's license agreement to post this, so let me know if it is, and I'll take it down post haste. Anyway, this is what I've got:

void InterruptHandlerLow ()     
{
	unsigned char Port_B;
	unsigned char Port_B_Delta;

	if (PIR1bits.RC1IF && PIE1bits.RC1IE) // rx1 interrupt?
	{
		#ifdef ENABLE_SERIAL_PORT_ONE_RX
		Rx_1_Int_Handler(); // call the rx1 interrupt handler (in serial_ports.c)
		#endif
	}                              
	else if (PIR3bits.RC2IF && PIE3bits.RC2IE) // rx2 interrupt?
	{
		#ifdef ENABLE_SERIAL_PORT_TWO_RX
		Rx_2_Int_Handler(); // call the rx2 interrupt handler (in serial_ports.c)
		#endif
	} 
	else if (PIR1bits.TX1IF && PIE1bits.TX1IE) // tx1 interrupt?
	{
		#ifdef ENABLE_SERIAL_PORT_ONE_TX
		Tx_1_Int_Handler(); // call the tx1 interrupt handler (in serial_ports.c)
		#endif
	}                              
	else if (PIR3bits.TX2IF && PIE3bits.TX2IE) // tx2 interrupt?
	{
		#ifdef ENABLE_SERIAL_PORT_TWO_TX
		Tx_2_Int_Handler(); // call the tx2 interrupt handler (in serial_ports.c)
		#endif
	}
	else if (INTCON3bits.INT2IF && INTCON3bits.INT2IE) // encoder 1 interrupt?
	{ 
		INTCON3bits.INT2IF = 0; // clear the interrupt flag
		#ifdef ENABLE_ENCODER_1
		Encoder_1_Int_Handler(); // call the left encoder interrupt handler (in encoder.c)
		#endif
	}
	else if (INTCON3bits.INT3IF && INTCON3bits.INT3IE) // encoder 2 interrupt?
	{
		INTCON3bits.INT3IF = 0; // clear the interrupt flag
		#ifdef ENABLE_ENCODER_2
		Encoder_2_Int_Handler(); // call right encoder interrupt handler (in encoder.c)
		#endif
	}
	else if (INTCONbits.RBIF && INTCONbits.RBIE) // encoder 3-6 interrupt?
	{
		Port_B = PORTB; // remove the "mismatch condition" by reading port b            
		INTCONbits.RBIF = 0; // clear the interrupt flag
		Port_B_Delta = Port_B ^ Old_Port_B; // determine which bits have changed
		Old_Port_B = Port_B; // save a copy of port b for next time around
	 
		if(Port_B_Delta & 0x10) // did external interrupt 3 change state?
		{
			#ifdef ENABLE_ENCODER_3
			Encoder_3_Int_Handler(Port_B & 0x10 ? 1 : 0); // call the encoder 3 interrupt handler (in encoder.c)
			#endif
		}
		if(Port_B_Delta & 0x20) // did external interrupt 4 change state?
		{
			#ifdef ENABLE_ENCODER_4
			Encoder_4_Int_Handler(Port_B & 0x20 ? 1 : 0); // call the encoder 4 interrupt handler (in encoder.c)
			#endif
		}
		if(Port_B_Delta & 0x40) // did external interrupt 5 change state?
		{
			#ifdef ENABLE_ENCODER_5
			Encoder_5_Int_Handler(Port_B & 0x40 ? 1 : 0); // call the encoder 5 interrupt handler (in encoder.c)
			#endif
		}
		if(Port_B_Delta & 0x80) // did external interrupt 6 change state?
		{
			#ifdef ENABLE_ENCODER_6
			Encoder_6_Int_Handler(Port_B & 0x80 ? 1 : 0); // call the encoder 6 interrupt handler (in encoder.c)
			#endif
		}
	}


//  ***  IFI Code Starts Here***
//                              
//  unsigned char int_byte;       
//  if (INTCON3bits.INT2IF && INTCON3bits.INT2IE)       /* The INT2 pin is RB2/DIG I/O 1. */
//  { 
//    INTCON3bits.INT2IF = 0;
//  }
//  else if (INTCON3bits.INT3IF && INTCON3bits.INT3IE)  /* The INT3 pin is RB3/DIG I/O 2. */
//  {
//    INTCON3bits.INT3IF = 0;
//  }
//  else if (INTCONbits.RBIF && INTCONbits.RBIE)  /* DIG I/O 3-6 (RB4, RB5, RB6, or RB7) changed. */
//  {
//    int_byte = PORTB;          /* You must read or write to PORTB */
//    INTCONbits.RBIF = 0;     /*     and clear the interrupt flag         */
//  }                                        /*     to clear the interrupt condition.  */
//  else
//  { 
//    CheckUartInts();    /* For Dynamic Debug Tool or buffered printf features. */
//  }
}