main.c

state machine working with rtos

/*****************************************************************************
* Product:  Quantum Calculator Example for DOS with Borland Turbo C++ 1.01
* Version:  Compatible with QEP/C 3.1.yy
* Updated:  Oct 15, 2005
*
* Copyright (C) 2002-2005 Quantum Leaps, LLC. All rights reserved.
*
* This example is part of the Quantum Leaps QP/C software, and 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 in conjunction
* with a valid QP/C Quantum Leaps commercial license. Quantum Leaps
* commercial licenses are designed for users who want to retain proprietary
* status of their code. The users who license this software under one of
* Quantum Leaps commercial licenses do not use this software under the GPL
* and therefore are not subject to any of its terms.
*
* Contact information:
* Quantum Leaps Web site:  http://www.quantum-leaps.com
* Quantum Leaps licensing: http://www.quantum-leaps.com/licensing
* Quantum Leaps products:  http://www.quantum-leaps.com/products
* e-mail:                  [e-mail]
*****************************************************************************/
#include "qep_port.h"
#include "qassert.h"
#include "qcalc.h"

#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <time.h>

Q_DEFINE_THIS_FILE

/* Local objects -----------------------------------------------------------*/
static QCalc l_qcalc;      /* quantum calculator hierarchical state machine */

/*..........................................................................*/
void Q_assert_handler(char const *file, int line) {
    fprintf(stderr, "Assertion failed in %s, line %d", file, line);
    exit(-1);
}
/*..........................................................................*/
void QCalc_updateState(QCalc *me, char const *s) {
    (void)me;              /* suppress the "unreferenced parameter" warning */
    printf("%s;", s);
}
/*..........................................................................*/
void QCalc_exit(QCalc *me) {
    (void)me;              /* suppress the "unreferenced parameter" warning */
    printf("Bye, Bye!");
    exit(0);
}
/*..........................................................................*/
int main() {
    QCalc_ctor(&l_qcalc);

    printf("QCalc example, built on %s at %s,\n"
           "QEP/C: %s.\nPress ESC to quit...\n",
           __DATE__, __TIME__, QEP_getVersion());

    QHsm_init((QHsm *)&l_qcalc, (QEvent *)0);      /* trigger initial tran. */

    for (;;) {                                                /* event loop */
        QCalcEvt e;

        printf("\n[%s] >", QCalc_getDisplay(&l_qcalc)); /* show the display */

        e.keyId = (uint8_t)getche(); /*get a char from the console with echo*/
        printf(": ");

        switch (e.keyId) {
            case 'c':                         /* intentionally fall through */
            case 'C': {
                ((QEvent *)&e)->sig = C_SIG;
                break;
            }
            case 'e':                         /* intentionally fall through */
            case 'E': {
                ((QEvent *)&e)->sig = CE_SIG;
                break;
            }
            case '0': {
                ((QEvent *)&e)->sig = DIGIT_0_SIG;
                break;
            }
            case '1':                         /* intentionally fall through */
            case '2':                         /* intentionally fall through */
            case '3':                         /* intentionally fall through */
            case '4':                         /* intentionally fall through */
            case '5':                         /* intentionally fall through */
            case '6':                         /* intentionally fall through */
            case '7':                         /* intentionally fall through */
            case '8':                         /* intentionally fall through */
            case '9': {
                ((QEvent *)&e)->sig = DIGIT_1_9_SIG;
                break;
            }
            case '.': {
                ((QEvent *)&e)->sig = POINT_SIG;
                break;
            }
            case '+':                         /* intentionally fall through */
            case '-':                         /* intentionally fall through */
            case '*':                         /* intentionally fall through */
            case '/': {
                ((QEvent *)&e)->sig = OPER_SIG;
                break;
            }
            case '=':                         /* intentionally fall through */
            case '\r': {                                       /* Enter key */
                ((QEvent *)&e)->sig = EQUALS_SIG;
                break;
            }
            case '\33': {                                        /* ESC key */
                ((QEvent *)&e)->sig = TERMINATE_SIG;
                break;
            }
            default: {
                ((QEvent *)&e)->sig = IGNORE_SIG;
                break;
            }
        }

        QHsm_dispatch((QHsm *)&l_qcalc, (QEvent *)&e);/* dispatch the event */
    }

    return 0;
}