Aşağıdaki kodlar bir kesmemidir ?

[armsistem]

/*****************************************************************************
** Function name:		UART0_IRQHandler
**
** Descriptions:		UART0 interrupt handler
**
** parameters:			None
** Returned value:		None
** 
*****************************************************************************/
void UART0_IRQHandler (void) 
{
  uint8_t IIRValue, LSRValue;
  uint8_t Dummy = Dummy;
	
  IIRValue = LPC_UART0->IIR;
    
  IIRValue >>= 1;			/* skip pending bit in IIR */
  IIRValue &= 0x07;			/* check bit 1~3, interrupt identification */
  if ( IIRValue == IIR_RLS )		/* Receive Line Status */
  {
	LSRValue = LPC_UART0->LSR;
	/* Receive Line Status */
	if ( LSRValue & (LSR_OE|LSR_PE|LSR_FE|LSR_RXFE|LSR_BI) )
	{
	  /* There are errors or break interrupt */
	  /* Read LSR will clear the interrupt */
	  UART0Status = LSRValue;
	  Dummy = LPC_UART0->RBR;		/* Dummy read on RX to clear 
							interrupt, then bail out */
	  return;
	}
	if ( LSRValue & LSR_RDR )	/* Receive Data Ready */			
	{
	  /* If no error on RLS, normal ready, save into the data buffer. */
	  /* Note: read RBR will clear the interrupt */
	  UART0Buffer[UART0Count] = LPC_UART0->RBR;
	  UART0Count++;
	  if ( UART0Count == BUFSIZE )
	  {
		UART0Count = 0;		/* buffer overflow */
	  }	
	}
  }
  else if ( IIRValue == IIR_RDA )	/* Receive Data Available */
  {
	/* Receive Data Available */
	UART0Buffer[UART0Count] = LPC_UART0->RBR;
	UART0Count++;
	if ( UART0Count == BUFSIZE )
	{
	  UART0Count = 0;		/* buffer overflow */
	}
  }
  else if ( IIRValue == IIR_CTI )	/* Character timeout indicator */
  {
	/* Character Time-out indicator */
	UART0Status |= 0x100;		/* Bit 9 as the CTI error */
  }
  else if ( IIRValue == IIR_THRE )	/* THRE, transmit holding register empty */
  {
	/* THRE interrupt */
	LSRValue = LPC_UART0->LSR;		/* Check status in the LSR to see if
									valid data in U0THR or not */
	if ( LSRValue & LSR_THRE )
	{
	  UART0TxEmpty = 1;
	}
	else
	{
	  UART0TxEmpty = 0;
	}
  }
}

[armsistem]

Aşağıdaki gibi mi ?

   LPC_UART0->IER = IER_RBR | IER_THRE | IER_RLS;	/* Enable UART0 interrupt */