xref: /gem5/src/systemc/tests/systemc/misc/v1.0/dash2/dist.cpp

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  Licensed to Accellera Systems Initiative Inc. (Accellera) under one or
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  with this work for additional information regarding copyright ownership.
  Accellera licenses this file to you under the Apache License, Version 2.0
  (the "License"); you may not use this file except in compliance with the
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  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or
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/*****************************************************************************

  dist.cpp -- Implementation of the odometers.

  Original Author: Ali Dasdan, Synopsys, Inc.

 *****************************************************************************/

/*****************************************************************************

  MODIFICATION LOG - modifiers, enter your name, affiliation, date and
  changes you are making here.

      Name, Affiliation, Date:
  Description of Modification:

 *****************************************************************************/

// $Log: dist.cpp,v $
// Revision 1.1.1.1  2006/12/15 20:26:24  acg
// systemc_tests-2.3
//
// Revision 1.3  2006/01/19 00:48:14  acg
// Andy Goodrich: Changes for the fact signal write checking is enabled.
//
// Revision 1.2  2006/01/18 00:23:50  acg
// Change over from SC_NO_WRITE_CHECK to sc_write_check_enable() call.
//

#define SC_NO_WRITE_CHECK
#include "systemc.h"
#include "const.h"
#include "dist.h"

bool dist_mod::prev_reset;

// Get the pulses for one distance increment.
void
dist_mod::get_dist_proc()
{
  wait();

  while (true) {

    // More than one pulse is needed for a distance increment.  This
    // function collects NUM_PULSES_FOR_DIST_INCR pulses for that
    // purpose.
    AWAIT(NUM_PULSES_FOR_DIST_INCR);

    if (start)
      ok_for_incr = (ok_for_incr ? false : true);
    else
      ok_for_incr = false;
  }
}

// Compute total distance.
void
dist_mod::compute_total_proc()
{
  if (start)
    total_dist = total_dist + 1.0;
  else
    total_dist = 0.0;
}

// Compute partial distance.
void
dist_mod::compute_partial_proc()
{
  if (start) {

    // Implement reset.event():
    if (prev_reset != (bool) reset)
      partial_dist = 0.0;
    else
      partial_dist = partial_dist + 1.0;

    prev_reset = reset;

  }
  else
    partial_dist = 0.0;
}

// LCD display driver.
void
dist_mod::lcd_driver_proc()
{
  if (start) {

    if (total_dist.event())
      total = total_dist * DIST_INCR;

    if (partial_dist.event())
      partial = partial_dist * DIST_INCR;

  }
  else {
    total = 0.0;
    partial = 0.0;
  }
}

// End of file