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68hc12 TOVF interrupt problems ICC12

by hendersonmarv :: Rate this Message:

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I'm trying to get the timer overflow interrupt working on the
hc12dp256b but so far I haven't had any luck.

The overflow interrupt is never generated in my program(used a breakpiont in isr) and I can't find the logic error in my code.

Here is my work environment:
CHIP:     hc12dp256
COMPILER: ICC12
DEBUGGER: NOICE

Here's the code that doesn't work

----------------------------------------------------------------------
#include <hcs12dp256.h>
#include <stdio.h>

#pragma interrup_handler TOVF_ISR() (isrs installed in vector table file)

int count

void main(void)
{
  //setup
  TFLG2|=0x80;       //Clear interrupt flag
  TSCR2 =0x8D;       //Set timer frequency(250kHz), Enable TOVF int
  TSCR1|=0x90;       //enable timer and fast clear TOC7

  asm("cli");
 
  count=0;
  while(count<3){
    if(i%2000==0) printf("count: %d\n",count);
    i++;
  }

  printf("count reached three\n");
}

void TOVF_ISR()
{
  asm("cli");    //reenable interrupts
  count++;
  TFLG2|=0X80;
}
----------------------------------------------------------------------

Thanks to anyone who can help me out

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