Test CRTP.

Implement initPlugin().
Im[plement getString().

src/ATBAPP/ATBAPPplugin.h

@@ -5,21 +5,66 @@
  * a simple class with only one method for plugin info
  */
 #include <QObject>
-#include <QString>
+#include <QStringList>
 
-class ATBAPPplugin
-{
+class UnifiedDCVMCInterface;
 
-public:
-    explicit ATBAPPplugin() = default;
-    virtual ~ATBAPPplugin() = default;
+template <typename T>
+struct ATBAPPplugin {
+    enum class PLUGIN_STATE : quint8 {
+        NOT_INITIALIZED = 0,
+        INITIALIZED = 1
+    };
+    enum class RESULT_STATE : quint8 {
+        SUCCESS = 1,                // operation was successfull
+        ERROR_BACKEND,              // error from backend (e.g. backend replies with error)
+        ERROR_NETWORK,
+        ERROR_TIMEOUT,              // the operation timed out
+        ERROR_PROCESS,              // internal plugin error, should not occur (this is a bug in implementation)
+        ERROR_BUSY,
+        ERROR_STATE,
+        ERROR_RETRY,                // retry operation
+        INFO                        // informational (e.g. display a message, log something etc.)
+    };
+    enum class CASH_STATE   : quint8 {
+        CACHE_EMPTY,                // Cache still empty, default state
+        CACHE_INPUT,                // Coins are in Cache
+        OVERPAYED,
+        /* t.b.d. */
+    };
+    enum class TICKET_VARIANT : quint8 {
+        PARKING_TICKET,
+        RECEIPT,
+        ERROR_RECEIPT,
+        START_RECEIPT,   // e.g. Szeged Start
+        STOP_RECEIPT,    // e.g. Szeged Stop
+    };
+    enum class STEP : quint8 {
+        UP = 1,
+        DOWN = 2
+    };
+    enum class TERMINAL_STATE : quint8 {
+        NOT_AVAILABLE = 1,
+        AVAILABLE,
+        PREPARED_FOR_VENDING,
+        BUSY,
+        NEEDS_MAINTENANCE
+    };
 
-    virtual const QString & getPluginInfo() = 0;
+    virtual const QString &getPluginInfo() = 0;
+    virtual QStringList getPluginInfoList() {
+        return QStringList(QString());
+    }
 };
 
-Q_DECLARE_INTERFACE(ATBAPPplugin,
-                    "eu.atb.ptu.plugin.ATBAPPplugin/0.9")
-
+using PLUGIN_STATE = ATBAPPplugin<UnifiedDCVMCInterface>::PLUGIN_STATE;
+using RESULT_STATE = ATBAPPplugin<UnifiedDCVMCInterface>::RESULT_STATE;
+using CASH_STATE = ATBAPPplugin<UnifiedDCVMCInterface>::CASH_STATE;
+using TICKET_VARIANT = ATBAPPplugin<UnifiedDCVMCInterface>::TICKET_VARIANT;
+using STEP = ATBAPPplugin<UnifiedDCVMCInterface>::STEP;
+using TERMINAL_STATE = ATBAPPplugin<UnifiedDCVMCInterface>::TERMINAL_STATE;
 
+//Q_DECLARE_INTERFACE(ATBAPPplugin,
+//                    "eu.atb.ptu.plugin.ATBAPPplugin/0.9")
 
 #endif // ATBAPPPLUGIN_H

src/ATBAPP/ATBVMCPlugin.cpp

@@ -17,21 +17,20 @@ ATBVMCPlugin::ATBVMCPlugin(QObject *parent)
   : VMCInterface(parent)
   , m_errorCode("")
   , m_errorDescription("")
-  , m_pluginInfo("")
   , m_serialPortName("")
   , m_useDebug(false)
   , m_pluginState(PLUGIN_STATE::NOT_INITIALIZED)
   , m_vmc(nullptr) {
 
-    QStringList lst;
-    lst << QString("        Interface: ") + INTERFACE;
-    lst << QString("Interface Version: ") + INTERFACE_VERSION;
-    lst << QString("       PluginName: ") + PLUGIN_NAME;
-    lst << QString("          Version: ") + PLUGIN_VERSION;
-    lst << QString("     git-describe: ") + PLUGIN_GIT_DESCRIBE;
-    lst << QString(" Extended version: ") + PLUGIN_EXTENDED_VERSION;
+  m_pluginInfoList.clear();
+  m_pluginInfoList << QString("        Interface: ") + INTERFACE;
+  m_pluginInfoList << QString("Interface Version: ") + INTERFACE_VERSION;
+  m_pluginInfoList << QString("       PluginName: ") + PLUGIN_NAME;
+  m_pluginInfoList << QString("          Version: ") + PLUGIN_VERSION;
+  m_pluginInfoList << QString("     git-describe: ") + PLUGIN_GIT_DESCRIBE;
+  m_pluginInfoList << QString(" Extended version: ") + PLUGIN_EXTENDED_VERSION;
 
-    m_pluginInfo = lst.join('\n');
+  m_pluginInfo = m_pluginInfoList.join('\n');
 }
 
 ATBVMCPlugin::~ATBVMCPlugin() {
@@ -41,12 +40,34 @@ ATBVMCPlugin::~ATBVMCPlugin() {
     }
 }
 
+QStringList ATBVMCPlugin::getPluginInfoList() {
+    return m_pluginInfoList;
+}
+
 QString const &ATBVMCPlugin::getPluginInfo() {
     return m_pluginInfo;
 }
 
 // ----------------------------------------------------------------------------
 // interface:
+PLUGIN_STATE ATBVMCPlugin::initDCPlugin(QObject *eventReceiver, const QSettings & settings) {
+    Q_UNUSED(eventReceiver);
+    Q_UNUSED(settings);
+
+    return PLUGIN_STATE::NOT_INITIALIZED;
+}
+
+PLUGIN_STATE ATBVMCPlugin::initPlugin(QObject *eventReceiver, QObject *atbSystem, QObject *hmiConfig, QSettings const &settings) {
+    return initVMCPlugin(eventReceiver, atbSystem, hmiConfig, settings);
+}
+
+PLUGIN_STATE ATBVMCPlugin::initPlugin(QObject *eventReceiver, QSettings const &settings) {
+    Q_UNUSED(eventReceiver);
+    Q_UNUSED(settings);
+
+    return PLUGIN_STATE::NOT_INITIALIZED;
+}
+
 PLUGIN_STATE ATBVMCPlugin::initVMCPlugin(QObject *appControl,
                                          QObject *atbSystem,
                                          QObject *hmiConfig,
@@ -70,6 +91,8 @@ PLUGIN_STATE ATBVMCPlugin::initVMCPlugin(QObject *appControl,
         connect(m_vmc, SIGNAL(setMachineNr(QString)), hmiConfig, SLOT(setMachineNr(QString)), Qt::QueuedConnection);
         connect(m_vmc, SIGNAL(setDefaultLanguage(quint8)), hmiConfig, SLOT(setDefaultLanguage(quint8)), Qt::QueuedConnection);
 
+        connect(m_vmc, SIGNAL(wakeVMC()), m_vmc, SLOT(onWakeVMC()), Qt::QueuedConnection);
+
         return PLUGIN_STATE::INITIALIZED;
     }
 
@@ -81,22 +104,51 @@ PLUGIN_STATE ATBVMCPlugin::getState() {
     return m_pluginState;
 }
 
-QString ATBVMCPlugin::getLastError() {
+QString const &ATBVMCPlugin::getLastError() {
     return m_errorCode;
 }
 
-QString ATBVMCPlugin::getLastErrorDescription() {
+QString const &ATBVMCPlugin::getLastErrorDescription() {
     return m_errorDescription;
 }
 
-
-#if 0
-
 // helpers e.g. for debug / log
-QString ATBVMCPlugin::getString(RESULT_STATE /*resultState*/) {
-    return "";
+QString const &ATBVMCPlugin::getString(RESULT_STATE resultState) {
+    static QString str;
+
+    switch (resultState) {
+    case RESULT_STATE::SUCCESS:
+        str = QString("RESULT_STATE::SUCCESS");
+        break;
+    case RESULT_STATE::ERROR_BACKEND:
+        str = QString("RESULT_STATE::ERROR_BACKEND");
+        break;
+    case RESULT_STATE::ERROR_TIMEOUT:
+        str = QString("RESULT_STATE::ERROR_TIMEOUT");
+        break;
+    case RESULT_STATE::ERROR_PROCESS:
+        str = QString("RESULT_STATE::ERROR_PROCESS");
+        break;
+    case RESULT_STATE::ERROR_RETRY:
+        str = QString("RESULT_STATE::ERROR_RETRY");
+        break;
+    case RESULT_STATE::INFO:
+        str = QString("RESULT_STATE::INFO");
+        break;
+    case RESULT_STATE::ERROR_NETWORK:
+        str = QString("RESULT_STATE::ERROR_NETWORK");
+        break;
+    case RESULT_STATE::ERROR_BUSY:
+        str = QString("RESULT_STATE::ERROR_BUSY");
+        break;
+    case RESULT_STATE::ERROR_STATE:
+        str = QString("RESULT_STATE::ERROR_STATE");
+        break;
+    }
+    return str;
 }
 
+
 void ATBVMCPlugin::onChangedProgramModeToSELL() {
 
 }
@@ -129,7 +181,18 @@ void ATBVMCPlugin::reset() {
 
 }
 
-#endif
+QStringList ATBVMCPlugin::interfaces() const {
+    QStringList result;
+    int const count = this->metaObject()->classInfoCount();
+    for (int i = 0; i < count; ++i) {
+        QString const name(QString::fromLatin1(this->metaObject()->classInfo(i).name()));
+        QString const value(QString::fromLatin1(this->metaObject()->classInfo(i).value()));
+        if (name == "Interface") {
+            result << value;
+        }
+    }
+    return result;
+}
 
 #if QT_VERSION < 0x050000
 Q_EXPORT_PLUGIN2(ATBVMCPlugin, ATBVMCPlugin)

src/ATBAPP/ATBVMCPlugin.h

@@ -15,6 +15,7 @@ class ATBVMCPlugin : public VMCInterface {
     Q_OBJECT
 
     Q_INTERFACES(VMCInterface)
+    Q_CLASSINFO("Interface", "VMCInterface")
 
 #if QT_VERSION >= 0x050000
     Q_PLUGIN_METADATA(IID "eu.atb.ptu.plugin.ATBVMCPlugin")
@@ -24,24 +25,25 @@ public:
     explicit ATBVMCPlugin(QObject *parent = nullptr);
     virtual ~ATBVMCPlugin();
 
-    virtual const QString & getPluginInfo() override;
+    virtual QStringList getPluginInfoList() override;
+    virtual const QString &getPluginInfo() override;
 
     // ----------------------------------------------------------------------------
     // interface:
-    virtual PLUGIN_STATE initVMCPlugin(QObject *eventReceiver,
-                                       QObject *atbSystem,
-                                       QObject *hmiConfig,
-                                       QSettings const &settings) override;
+    virtual PLUGIN_STATE initPlugin(QObject *eventReceiver, QObject *atbSystem, QObject *hmiConfig, QSettings const &settings) override;
+    virtual PLUGIN_STATE initPlugin(QObject *eventReceiver, QSettings const &settings) override;
+    virtual PLUGIN_STATE initDCPlugin(QObject *eventReceiver, const QSettings & settings) override;
+    virtual PLUGIN_STATE initVMCPlugin(QObject *eventReceiver, QObject *atbSystem, QObject *hmiConfig, QSettings const &settings) override;
 
     // mandantory ATBAPP plugin methods: ------------------------------------------
     PLUGIN_STATE getState() override;
-    QString getLastError() override;
-    QString getLastErrorDescription() override;
-
-#if 0
+    QString const &getLastError() override;
+    QString const &getLastErrorDescription() override;
 
     // helpers e.g. for debug / log
-    virtual QString getString(RESULT_STATE resultState) override;
+    virtual QString const &getString(RESULT_STATE resultState) override;
+
+    QStringList interfaces() const;
 
 public slots:
     virtual void onChangedProgramModeToSELL() override;
@@ -54,11 +56,10 @@ public slots:
     virtual void reboot() override;
     virtual void reset() override;
 
-#endif
-
 private:
    QString m_errorCode;
    QString m_errorDescription;
+   QStringList m_pluginInfoList;
    QString m_pluginInfo;
    QString m_serialPortName;
    bool m_useDebug;

src/ATBAPP/UnifiedDCVMCInterface.h

@@ -12,60 +12,40 @@
 #include "ATBAPPplugin.h"
 
 
-class UnifiedDCVMCInterface : public ATBAPPplugin {
-    Q_INTERFACES(ATBAPPplugin)
+class UnifiedDCVMCInterface : public ATBAPPplugin<UnifiedDCVMCInterface> {
+    //Q_INTERFACES(ATBAPPplugin)
+    //Q_CLASSINFO("Interface", "ATBAPPplugin")
 
 public:
-    enum class PLUGIN_STATE : quint8 {
-        NOT_INITIALIZED = 0,
-        INITIALIZED = 1
-    };
-    enum class RESULT_STATE : quint8 {
-        SUCCESS = 1,                // operation was successfull
-        ERROR_BACKEND,              // error from backend (e.g. backend replies with error)
-        ERROR_TIMEOUT,              // the operation timed out
-        ERROR_PROCESS,              // internal plugin error, should not occur (this is a bug in implementation)
-        ERROR_RETRY,                // retry operation
-        INFO                        // informational (e.g. display a message, log something etc.)
-    };
-    enum class CASH_STATE   : quint8 {
-        CACHE_EMPTY,                // Cache still empty, default state
-        CACHE_INPUT,                // Coins are in Cache
-        OVERPAYED,
-        /* t.b.d. */
-    };
-    enum class TICKET_VARIANT : quint8 {
-        PARKING_TICKET,
-        RECEIPT,
-        ERROR_RECEIPT,
-        START_RECEIPT,   // e.g. Szeged Start
-        STOP_RECEIPT,    // e.g. Szeged Stop
-    };
-
     explicit UnifiedDCVMCInterface() = default;
     virtual ~UnifiedDCVMCInterface() = default;
 
-    virtual const QString & getPluginInfo() = 0;
+    virtual QStringList getPluginInfoList() = 0;
+    virtual const QString &getPluginInfo() = 0;
 
     // mandantory ATBAPP plugin methods:
     virtual PLUGIN_STATE getState() = 0;
-    virtual QString getLastError() = 0;
-    virtual QString getLastErrorDescription() = 0;
+    virtual QString const &getLastError() = 0;
+    virtual QString const &getLastErrorDescription() = 0;
 
     virtual PLUGIN_STATE initPlugin(QObject *eventReceiver,
                                     QObject *atbSystem,
                                     QObject *hmiConfig,
                                     QSettings const &settings) = 0;
 
+    virtual PLUGIN_STATE initPlugin(QObject *eventReceiver, QSettings const &settings) = 0;
+
+    virtual PLUGIN_STATE initDCPlugin(QObject *eventReceiver,
+                                      const QSettings & settings) = 0;
+
     virtual PLUGIN_STATE initVMCPlugin(QObject *eventReceiver,
-                                      QObject *atbSystem, QObject *hmiConfig,
+                                       QObject *atbSystem, QObject *hmiConfig,
                                        const QSettings & settings) = 0;
 
-#if 0
 
-    virtual QString getString(RESULT_STATE resultState) = 0;
+    virtual QString const &getString(RESULT_STATE resultState) = 0;
 
-public slots:
+//public slots:
     virtual void onChangedProgramModeToSELL() = 0;
     virtual void onChangedProgramModeToSERVICE() = 0;
     virtual void onChangedProgramModeToIDLE() = 0;
@@ -75,79 +55,9 @@ public slots:
     virtual void stopPhysicalLayer() = 0;
     virtual void reboot() = 0;
     virtual void reset() = 0;
-
-signals:
-    void printTicketFinished(RESULT_STATE resultState,
-                             const QString & errorCode,
-                             const QString & errorDescription);
-    void printReceiptFinished(RESULT_STATE resultState,
-                              const QString & errorCode,
-                              const QString & errorDescription);
-
-    /**
-     * emitted on e.g. a coin input
-     */
-    void cashInputEvent(RESULT_STATE resultState,
-                                CASH_STATE cashState,
-                                const QString & newCashValue,
-                                /* additional variables? */
-                                const QString & errorCode,
-                                const QString & errorDescription);
-
-    /**
-     * emitted if cashInput has been stopped, e.g. in result to task requestStopCashInput():
-     *  -> shutter is blocked
-     *  -> no cash input is possible
-     *  -> coins are in cache
-     */
-    void cashInputFinished(RESULT_STATE resultState,
-                                     const QString & newCashValue,
-                                     /*  additional variables? */
-                                     const QString & errorCode,
-                                     const QString & errorDescription);
-
-
-    /**
-     * emitted e.g. if service door is opened
-     */
-    void requestModeSERVICE();
-
-    /**
-     * emitted e.g. if doors are closed
-     */
-    void requestModeIDLE();
-
-    /**
-     * emitted e.g. on severe errors
-     */
-    void requestModeOOO();
-
-    /**
-     * emitted e.g. if service door is opened
-     */
-    void requestAccountResponse(const QHash<QString, QVariant> & accountData);
-
-    /**
-     * emitted on error
-     * depending on errorCode:
-     * -> interrupt selling process
-     * -> machine can go to state OOO
-     * -> send error event to ISMAS
-     * -> ...
-     */
-    void Error(
-            /*  additional variables? */
-            const QString & errorCode,
-            const QString & errorDescription);
-#endif
 };
 
-Q_DECLARE_INTERFACE(UnifiedDCVMCInterface,
-                    "eu.atb.ptu.plugin.UnifiedDCVMCInterface/1.0")
-
-using PLUGIN_STATE = UnifiedDCVMCInterface::PLUGIN_STATE;
-using RESULT_STATE = UnifiedDCVMCInterface::RESULT_STATE;
-using CASH_STATE = UnifiedDCVMCInterface::CASH_STATE;
-using TICKET_VARIANT = UnifiedDCVMCInterface::TICKET_VARIANT;
+//Q_DECLARE_INTERFACE(UnifiedDCVMCInterface,
+//                    "eu.atb.ptu.plugin.UnifiedDCVMCInterface/1.0")
 
 #endif // UNIFIED_DCVMC_INTERFACE_H_INCLUDED

src/ATBAPP/VMCInterface.h

@@ -20,14 +20,18 @@ namespace nsVMCInterface {
 class VMCInterface : public QObject, public UnifiedDCVMCInterface {
 
     Q_OBJECT
-    Q_INTERFACES(ATBAPPplugin UnifiedDCVMCInterface)
-
+    //Q_INTERFACES(ATBAPPplugin UnifiedDCVMCInterface)
+    //Q_INTERFACES(UnifiedDCVMCInterface)
+    //Q_CLASSINFO("Interface", "ATBAPPplugin")
+    //Q_CLASSINFO("Interface", "UnifiedDCVMCInterface")
 public:
 
     explicit VMCInterface(QObject *parent = nullptr) : QObject(parent) {}
     virtual ~VMCInterface() = default;
 
-    virtual const QString & getPluginInfo() = 0;
+    virtual QStringList getPluginInfoList() = 0;
+    virtual const QString &getPluginInfo() = 0;
+    virtual QString const &getString(RESULT_STATE resultState) = 0;
 
     virtual PLUGIN_STATE initPlugin(QObject *eventReceiver, QObject *atbSystem,
                                     QObject *hmiConfig, QSettings const &settings) override {
@@ -43,86 +47,6 @@ public:
     virtual PLUGIN_STATE initVMCPlugin(QObject *eventReceiver,
                                       QObject *atbSystem, QObject *hmiConfig,
                                       const QSettings & settings) = 0;
-
-#if 0
-
-    virtual QString getString(RESULT_STATE resultState) = 0;
-
-public slots:
-    virtual void onChangedProgramModeToSELL() = 0;
-    virtual void onChangedProgramModeToSERVICE() = 0;
-    virtual void onChangedProgramModeToIDLE() = 0;
-    virtual void onChangedProgramModeToOOO() = 0;
-
-    virtual void startPhysicalLayer() = 0;
-    virtual void stopPhysicalLayer() = 0;
-    virtual void reboot() = 0;
-    virtual void reset() = 0;
-
-signals:
-    void printTicketFinished(RESULT_STATE resultState,
-                             const QString & errorCode,
-                             const QString & errorDescription);
-    void printReceiptFinished(RESULT_STATE resultState,
-                              const QString & errorCode,
-                              const QString & errorDescription);
-
-    /**
-     * emitted on e.g. a coin input
-     */
-    void cashInputEvent(RESULT_STATE resultState,
-                                CASH_STATE cashState,
-                                const QString & newCashValue,
-                                /* additional variables? */
-                                const QString & errorCode,
-                                const QString & errorDescription);
-
-    /**
-     * emitted if cashInput has been stopped, e.g. in result to task requestStopCashInput():
-     *  -> shutter is blocked
-     *  -> no cash input is possible
-     *  -> coins are in cache
-     */
-    void cashInputFinished(RESULT_STATE resultState,
-                                     const QString & newCashValue,
-                                     /*  additional variables? */
-                                     const QString & errorCode,
-                                     const QString & errorDescription);
-
-
-    /**
-     * emitted e.g. if service door is opened
-     */
-    void requestModeSERVICE();
-
-    /**
-     * emitted e.g. if doors are closed
-     */
-    void requestModeIDLE();
-
-    /**
-     * emitted e.g. on severe errors
-     */
-    void requestModeOOO();
-
-    /**
-     * emitted e.g. if service door is opened
-     */
-    void requestAccountResponse(const QHash<QString, QVariant> & accountData);
-
-    /**
-     * emitted on error
-     * depending on errorCode:
-     * -> interrupt selling process
-     * -> machine can go to state OOO
-     * -> send error event to ISMAS
-     * -> ...
-     */
-    void Error(
-            /*  additional variables? */
-            const QString & errorCode,
-            const QString & errorDescription);
-#endif
 };
 
 Q_DECLARE_INTERFACE(VMCInterface,

src/ATBAPP/support/VMC/vmc.cpp

@@ -13,6 +13,13 @@
 VMC::VMC(QObject *appControl, QSettings const *settings,
          QObject *parent)
   : QObject(parent) {
+
+    this->REMOTE_OUT_gpio_outstream = nullptr;
+    this->REMOTE_OUT_gpio = nullptr;
+    this->sendBuffer = nullptr;
+    this->receiveBuffer = nullptr;
+    this->com_interface = nullptr;
+
     this->flag_blockVMCScreen = 0;
     this->currentCachedScreen = VMC_CMD_SCREEN_START;
 
@@ -23,6 +30,8 @@ VMC::VMC(QObject *appControl, QSettings const *settings,
     this->receiveBuffer = new ReceiveBuffer(com_interface, this);
     this->sendBuffer    = new SendBuffer(com_interface, this);
 
+    this->privateInit_REMOTE_OUT();
+
     connect(receiveBuffer, SIGNAL(ReceiveResponse(quint8)), sendBuffer, SLOT(onReceiveResponse(quint8)));
 
     com_interface->open(settings->value("VMC/serialPort", "ttymxc2").toString(),
@@ -41,11 +50,59 @@ VMC::VMC(QObject *appControl, QSettings const *settings,
 
 
 VMC::~VMC() {
-    delete(this->sendBuffer);
-    delete(this->receiveBuffer);
-    delete(this->com_interface);
+    if (this->REMOTE_OUT_gpio_outstream) {
+        delete(this->REMOTE_OUT_gpio_outstream);
+    }
+    if (this->REMOTE_OUT_gpio) {
+        delete(this->REMOTE_OUT_gpio);
+    }
+    if (this->sendBuffer) {
+        delete(this->sendBuffer);
+    }
+    if (this->receiveBuffer) {
+        delete(this->receiveBuffer);
+    }
+    if (this->com_interface) {
+        delete(this->com_interface);
+    }
 }
 
+/*****************************************************************************
+ * functions for wake vmc
+*/
+
+void VMC::onWakeVMC() {
+    this->privateWakeVMC();
+}
+
+void VMC::privateWakeVMC() {
+    QTimer::singleShot (100, this, SLOT(privateSuspendVMC()));
+    this->privateSet_REMOTE_OUT(true);
+}
+
+void VMC::privateSuspendVMC() {
+    this->privateSet_REMOTE_OUT(false);
+}
+
+void VMC::privateSet_REMOTE_OUT(bool state) {
+    if (state) {       *(this->REMOTE_OUT_gpio_outstream) << "1";    }
+    else       {       *(this->REMOTE_OUT_gpio_outstream) << "0";    }
+
+    this->REMOTE_OUT_gpio_outstream->flush();
+}
+
+void VMC::privateInit_REMOTE_OUT() {
+    QString sysfs_remout_out("/sys/class/leds/REMOTE_OUT/brightness");
+
+    this->REMOTE_OUT_gpio = new QFile(sysfs_remout_out);
+    if (!REMOTE_OUT_gpio->open(QIODevice::WriteOnly | QIODevice::Text)) {
+        qDebug() << "ATB_system::privateInit_REMOTE_OUT() cannot open file: " << sysfs_remout_out;
+        qDebug() << "     file.errorString() = " << REMOTE_OUT_gpio->errorString();
+        return;
+    }
+
+    this->REMOTE_OUT_gpio_outstream = new QTextStream(this->REMOTE_OUT_gpio);
+}
 
 /********************************************************************************
  * S E N D    M E S S A G E S      t o   V M C

src/ATBAPP/support/VMC/vmc.h

@@ -11,6 +11,8 @@
 #include <QTimer>
 #include <QList>
 #include <QSettings>
+#include <QFile>
+#include <QTextStream>
 
 
 #define VMC_RECEIVE_TIMEOUT 1000
@@ -147,11 +149,8 @@ class SendBuffer;
 using FormatedStringList = QList<QByteArray>;
 
 
-class VMC : public QObject
-{
+class VMC : public QObject {
     Q_OBJECT
-
-
 private:
     QObject *m_appControl;
     COM_interface *com_interface;
@@ -159,6 +158,9 @@ private:
     SendBuffer *sendBuffer;
     QSettings const *m_settings;
 
+    QFile *REMOTE_OUT_gpio;
+    QTextStream *REMOTE_OUT_gpio_outstream;
+
     // internal: write a ByteArray to com-port:
     int SendMessage(QByteArray ba, bool enqueue = false);
 
@@ -185,10 +187,14 @@ private:
     quint8 flag_blockVMCScreen;
     quint16 currentCachedScreen;
 
+    void privateInit_REMOTE_OUT();
+
 private slots:
     void onDelayedMessageTimerTimeout();
-
     void skipDiscount();
+    void privateSet_REMOTE_OUT(bool state);
+    void privateWakeVMC();
+    void privateSuspendVMC();
 
 public:
     explicit VMC(QObject *eventReceiver, QSettings const *settings,
@@ -387,6 +393,8 @@ public slots:
     void ccStartTransactionRequest();        // called to start/restart a CC transaction
     void ccStartConfirmTransaction();        // called to start confirmation
     void ccPrintReceipt(QString receipt);     // called to send receipt to vmc
+
+    void onWakeVMC();
 };
 
 #endif // VMC_H