96 lines
3.1 KiB
C
96 lines
3.1 KiB
C
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/****************************************************************************
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* $Id:: nmi.c 7227 2011-04-27 20:20:38Z usb01267 $
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* Project: NXP LPC13Uxx NMI interrupt example
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*
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* Description:
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* This file contains NMI interrupt handler code example.
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*
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****************************************************************************
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* Software that is described herein is for illustrative purposes only
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* which provides customers with programming information regarding the
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* products. This software is supplied "AS IS" without any warranties.
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* NXP Semiconductors assumes no responsibility or liability for the
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* use of the software, conveys no license or title under any patent,
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* copyright, or mask work right to the product. NXP Semiconductors
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* reserves the right to make changes in the software without
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* notification. NXP Semiconductors also make no representation or
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* warranty that such application will be suitable for the specified
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* use without further testing or modification.
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* Permission to use, copy, modify, and distribute this software and its
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* documentation is hereby granted, under NXP Semiconductors'
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* relevant copyright in the software, without fee, provided that it
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* is used in conjunction with NXP Semiconductors microcontrollers. This
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* copyright, permission, and disclaimer notice must appear in all copies of
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* this code.
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****************************************************************************/
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#include "LPC13Uxx.h"
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#include "nmi.h"
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#if NMI_ENABLED
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volatile uint32_t NMI_Counter[MAX_NMI_NUM];
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/*****************************************************************************
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** Function name: NMI_Handler
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**
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** Descriptions: NMI interrupt handler
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** parameters: None
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**
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** Returned value: None
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**
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*****************************************************************************/
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void NMI_Handler( void )
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{
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uint32_t regVal;
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regVal = LPC_SYSCON->NMISRC;
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regVal &= ~0x80000000;
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if ( regVal < MAX_NMI_NUM )
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{
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if ( regVal == CT16B0_IRQn )
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{
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/* Use TIMER16_0_IRQHandler as example for real application. */
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LPC_CT16B0->IR = 0xFF; /* Clear timer16_0 interrupt */
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}
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else if ( regVal == CT16B1_IRQn )
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{
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/* Use TIMER16_1_IRQHandler as example for real application. */
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LPC_CT16B1->IR = 0xFF; /* Clear timer16_1 interrupt */
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}
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else if ( regVal == CT32B0_IRQn )
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{
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/* Use TIMER32_0_IRQHandler as example for real application. */
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LPC_CT32B0->IR = 0xFF; /* Clear timer32_0 interrupt */
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}
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else if ( regVal == CT32B1_IRQn )
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{
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/* Use TIMER32_0_IRQHandler as example for real application. */
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LPC_CT32B1->IR = 0xFF; /* Clear timer32_1 interrupt */
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}
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NMI_Counter[regVal]++;
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}
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return;
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}
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/*****************************************************************************
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** Function name: NMI_Init
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**
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** Descriptions: NMI initialization
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** parameters: NMI number
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**
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** Returned value: None
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**
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*****************************************************************************/
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void NMI_Init( uint32_t NMI_num )
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{
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uint32_t i;
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for ( i = 0; i < MAX_NMI_NUM; i++ )
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{
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NMI_Counter[i] = 0x0;
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}
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LPC_SYSCON->NMISRC = 0x80000000|NMI_num;
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return;
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}
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#endif
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