qbomb.c

量子编程源代码 量子编程源代码

/*****************************************************************************
* Product:  Quantum Bomb Example
* Last Updated for Version: 3.4.00
* Date of the Last Update:  Sep 03, 2007
*
*                    Q u a n t u m     L e a P s
*                    ---------------------------
*                    innovating embedded systems
*
* Copyright (C) 2002-2007 Quantum Leaps, LLC. All rights reserved.
*
* This software may be distributed and modified under the terms of the GNU
* General Public License version 2 (GPL) as published by the Free Software
* Foundation and appearing in the file GPL.TXT included in the packaging of
* this file. Please note that GPL Section 2[b] requires that all works based
* on this software must also be made publicly available under the terms of
* the GPL ("Copyleft").
*
* Alternatively, this software may be distributed and modified under the
* terms of Quantum Leaps commercial licenses, which expressly supersede
* the GPL and are specifically designed for licensees interested in
* retaining the proprietary status of their code.
*
* Contact information:
* Quantum Leaps Web site:  http://www.quantum-leaps.com
* e-mail:                  [e-mail]
*****************************************************************************/
#include "qep_port.h"
#include "qbomb.h"
#include "qassert.h"

Q_DEFINE_THIS_FILE

/*--------------------------------------------------------------------------*/
enum {
    MIN_TIMEOUT = 1,
    MAX_TIMEOUT = 99,
    INIT_TIMEOUT = 5
};

/*..........................................................................*/
void QBomb_ctor(QBomb *me) {
    QFsm_ctor_(&me->super_, (QState)&QBomb_initial);     /* superclass ctor */
}
/*..........................................................................*/
void QBomb_initial(QBomb *me, QEvent const *e) {
    Q_REQUIRE(e != (QEvent const *)0);     /* initialization event expected */
    QBomb_updateState(me, "top-INIT");
    me->timeout__ = INIT_TIMEOUT;
    me->defuse__ = ((QBombInitEvt const *)e)->defuse;
    Q_INIT(&QBomb_setting);
}
/*..........................................................................*/
void QBomb_setting(QBomb *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            QBomb_updateState(me, "setting-ENTRY");
            break;
        }
        case Q_EXIT_SIG: {
            QBomb_updateState(me, "setting-EXIT");
            break;
        }
        case UP_SIG: {
            if (me->timeout__ < MAX_TIMEOUT) {
                ++me->timeout__;
            }
            break;
        }
        case DOWN_SIG: {
            if (me->timeout__ > MIN_TIMEOUT) {
                --me->timeout__;
            }
            break;
        }
        case ARM_SIG: {
            Q_TRAN(&QBomb_timing);
            break;
        }
    }
}
/*..........................................................................*/
void QBomb_timing(QBomb *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            QBomb_updateState(me, "timing-ENTRY");
            me->code__ = (uint8_t)0;          /* invalidate the defuse code */
            break;
        }
        case Q_EXIT_SIG: {
            QBomb_updateState(me, "timing-EXIT");
            break;
        }
        case TICK_SIG: {
            if (me->timeout__ > (uint8_t)0) {
                --me->timeout__;
            }
            else {                                       /* timeout expired */
                Q_TRAN(&QBomb_blast);
            }
            break;
        }
        case UP_SIG: {
            me->code__ = (uint8_t)((me->code__ << 1) | 1);
            break;
        }
        case DOWN_SIG: {
            me->code__ <<= 1;
            break;
        }
        case ARM_SIG: {
            if (me->code__ == me->defuse__) {
                Q_TRAN(&QBomb_setting);
            }
            break;
        }
    }
}
/*..........................................................................*/
void QBomb_blast(QBomb *me, QEvent const *e) {
    switch (e->sig) {
        case Q_ENTRY_SIG: {
            QBomb_updateState(me, "blast-ENTRY");
            QBomb_exit(me);
            break;
        }
    }
}

/*..........................................................................*/
uint8_t QBomb_getTimeout(QBomb *me) {
    return me->timeout__;
}