int.c

freescale 协处理器应用相关实例

#include <mc9s12xep100.h>     /* derivative information */
#include "int.h"

/*****************************************************************************/
/********* INTERRUPT SERVICE ROUTINES ***********/
/*****************************************************************************/
#pragma CODE_SEG __NEAR_SEG NON_BANKED 

/******************************************************************************
Function Name  : PIT0 Interrupt Service Routine
Engineer       : 	
Date           : 
Parameters     : NONE
Returns        : NONE
Notes          : Increments the bits on PORTA
******************************************************************************/
interrupt void PIT0_ISR(void)
{
  char portValue;

/* Clear PIT interrupt */  
  PITTF = 0x01;

/* Increment the bits on PORTA */
   PORTA += 1;
}