// *********LED2.C*********************

// Jonathan W. Valvano 1/16/02

//  PT6 LED flashes on and off 

#include "HC12.H"

void TOFinit(void){

  DDRT |= 0x40;  // PortT bit 6 is output to LED

  TSCR = 0x80;   // TEN(enable)

  TMSK2 = 0xA5;  // TOI arm, TPU(pullup) timer/32 (4us)

  CLKCTL = 0x00;

asm(" cli");   // enable interrupts

}

#pragma interrupt_handler TOFhandler

void TOFhandler(void){

  TFLG2 = 0x80;           // TOF interrupt acknowledge

  PORTT ^= 0x40;          // toggle bit 6

  COPRST = 0x55;          // make COP happy 

  COPRST = 0xAA;

}

#pragma abs_address:0xffde

void (*TOF_vector[])() = { TOFhandler };

#pragma end_abs_address



void main(void){ 

  TOFinit();     // Enable TOF interrupt to make COP happy

  while(1){

  }

}

extern void _start();	/* entry point in crt12.s */

#pragma abs_address:0xfffe

void (*reset_vector[])() = { _start };

#pragma end_abs_address