AW60的例子——RTI

1.main.c

#include <hidef.h> /* for EnableInterrupts macro */
#include "derivative.h" /* include peripheral declarations */

#include "RTI.h"

byte i=1;

void MCU_init(void) /* Device initialization function declaration */
{
  RTI_Init();
  /* ### Init_GPIO init code */
  /* PTFDD: PTFDD0=1 */
  PTFDD |= (unsigned char)0x03;
}

void main(void)
{

  /* Uncomment this function call after using Device Initialization
     to use the generated code */
  MCU_init();

  EnableInterrupts; /* enable interrupts */

  /* include your code here */



  for(;;)
  {
    __RESET_WATCHDOG(); /* feeds the dog */
    
  } /* loop forever */
  /* please make sure that you never leave this function */
}

2.RTI.C




#include <MC9S08AW60.h>

extern byte i;
void RTI_Init(void)
{
  /* SRTISC: RTIF=0,RTIACK=0,RTICLKS=0,RTIE=1,??=0,RTIS2=1,RTIS1=1,RTIS0=1 */
  SRTISC = 0x17; /* Run RTI (select clock source, set frequncy and enable interrupt )*/
}


interrupt 25 void isrRTI(void)
{
  SRTISC_RTIACK = 1; /* Reset real-time interrupt request flag */
  PTFD_PTFD0 = ~PTFD_PTFD0;
  i++;
  if(i==10)
  {
    i = 1;
    PTFD_PTFD1 = ~PTFD_PTFD1;
  }
}