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// filename  oc3test.C  

// test of OC3 interface

// Last modified 1/16/02 by Jonathan W. Valvano

 

// Copyright 2002 by Jonathan W. Valvano, valvano@uts.cc.utexas.edu 

//    You may use, edit, run or distribute this file 

//    as long as the above copyright notice remains 



#include "HC12.h"

#include "oc3.h"

// stepper connected to PT4,PT2,PT1,PT0

const struct State{

  unsigned char Out;      /* Output to Port T */

  const struct State *Next;  

};

typedef const struct State StateType;

typedef StateType *	StatePtr;

StatePtr Pt;  /* Current State */

#define S5  &fsm[0]

#define S6  &fsm[1]

#define S10 &fsm[2]

#define S9  &fsm[3]

StateType fsm[4]={

  {0x05,S6},

  {0x06,S10},

  {0x12,S9},

  {0x11,S5}

};



void step(void){

  PORTT = (PORTT&0xE8)+Pt->Out;

  Pt = Pt->Next;

  PORTT ^= 0x40;

}



void
0

 main(void){ 

  Pt = S5;         // Initial State 

  COPCTL = 0x00;   // disable COP 

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

  Start(100,&step);

  while(1){

  }

}



#include "oc3.C"



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

#pragma abs_address:0xfffe

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

#pragma end_abs_address