kbdmgr.cpp

Quantum Platform(QP) is a family of very lightweight, state machine-based frameworks for embedded sy

//////////////////////////////////////////////////////////////////////////////
// Product: QDPP example
// Last Updated for Version: 3.2.04
// Date of the Last Update:  Nov 23, 2006
//
//                    Q u a n t u m     L e a P s
//                    ---------------------------
//                    innovating embedded systems
//
// Copyright (C) 2002-2006 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 "qf_port.h"
#include "qdpp.h"
#include "qassert.h"

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

Q_DEFINE_THIS_FILE

class KbdMgr : public QActive {                            // keyboard manager
public:
    KbdMgr() : QActive((QState)&KbdMgr::initial) {
    }

protected:
    static void initial(KbdMgr *me, QEvent const *e);
    static QSTATE active(KbdMgr *me, QEvent const *e);

private:
    friend void kbdMgrStart(uint8_t prio,
                            QEvent const *qSto[], uint32_t qLen);
};

//............................................................................
void kbdMgrStart(uint8_t prio,
                 QEvent const *qSto[], uint32_t qLen)
{
    static KbdMgr k;
    k.start(prio, qSto, qLen,
            (void *)0,                              // no thread-local storage
            QK_FPU_THREAD,                        // this thread uses FPU, say
            (QEvent *)0);
}
//............................................................................
void KbdMgr::initial(KbdMgr *me, QEvent const *) {
    me->subscribe(KBD_SIG);
    Q_INIT(&KbdMgr::active);
}
//............................................................................
QSTATE KbdMgr::active(KbdMgr *me, QEvent const *e) {
    switch (e->sig) {
        case KBD_SIG: {
            busyDelay();
            displayKey(((KbdEvt const *)e)->key);
            if (((KbdEvt const *)e)->key == (uint8_t)0x81) {
                QF::publish(Q_NEW(QEvent, TERMINATE_SIG));
            }
            return 0;
        }
    }
    return (QSTATE)&QHsm::top;
}