Merge branch 'pu/integration' into pu/accountRequest

... but this is currently useless because we can not detect overpayment
here.

.gitignore

@@ -0,0 +1,41 @@
+# C++ objects and libs
+
+*.slo
+*.lo
+*.o
+*.a
+*.la
+*.lai
+*.so
+*.dll
+*.dylib
+
+# Qt-es
+
+*.pro.user
+*.pro.user.*
+moc_*.cpp
+qrc_*.cpp
+Makefile
+Makefile.*
+*-build-*
+
+#
+*.autosave
+ui_*.h
+version.h
+version.txt
+
+packages/*
+*.pro.orig
+Output/setup.exe
+.directory
+
+*~
+resources/icons/*.png
+resources/icons/*.jpg
+resources/icons/*.gif
+resources/style/*.qss
+text/*.html
+!text/*_template.html
+text/*.xml

DCPlugin.pro

@@ -0,0 +1,96 @@
+TEMPLATE = lib
+CONFIG += plugin
+#CONFIG += c++11 console
+#CONFIG -= app_bundle
+#QT += widgets
+QT -= gui
+QT += serialport
+
+INCLUDEPATH += $${PWD}/plugins
+INCLUDEPATH += $${PWD}/include
+
+QMAKE_CXXFLAGS += -Wno-deprecated-copy
+
+# default
+ARCH = PTU5
+
+
+contains( CONFIG, DesktopLinux ) {
+    QMAKE_CC = ccache $$QMAKE_CC
+    QMAKE_CXX = ccache $$QMAKE_CXX
+    QMAKE_CXXFLAGS += -std=c++11
+    # QMAKE_CXXFLAGS += -Wno-deprecated-ctor
+    linux-clang {  QMAKE_CXXFLAGS += -Qunused-arguments   }
+    ARCH = DesktopLinux
+}
+
+contains( CONFIG, PTU5 ) {
+    # QMAKE_CC = ccache $$QMAKE_CC
+    # QMAKE_CXX = ccache $$QMAKE_CXX
+    QMAKE_CXXFLAGS += -std=c++11
+    linux-clang {  QMAKE_CXXFLAGS += -Qunused-arguments   }
+    CONFIG += link_pkgconfig
+    ARCH = PTU5
+}
+
+contains( CONFIG, PTU5_YOCTO ) {
+    greaterThan(QT_MAJOR_VERSION, 4): QT += serialport
+    PTU5BASEPATH = /opt/devel/ptu5
+    ARCH = PTU5
+
+    # add qmqtt lib
+    #LIBS += -lQt5Qmqtt
+}
+
+TARGET   = ATBDeviceControllerPlugin
+#DESTDIR  = ../plugins
+INTERFACE = DeviceController
+INTERFACE_DEFINITION = $${PWD}/include/ATBAPP/DeviceControllerInterface.h
+
+DEFINES += DEVICECONTROLLERPLUGIN_LIBRARY
+
+# The following define makes your compiler emit warnings if you use
+# any Qt feature that has been marked deprecated (the exact warnings
+# depend on your compiler). Please consult the documentation of the
+# deprecated API in order to know how to port your code away from it.
+DEFINES += QT_DEPRECATED_WARNINGS
+
+# You can also make your code fail to compile if it uses deprecated APIs.
+# In order to do so, uncomment the following line.
+# You can also select to disable deprecated APIs only up to a certain version of Qt.
+#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0
+
+
+
+# Default rules for deployment.
+#qnx: target.path = /tmp/$${TARGET}/bin
+#else: unix:!android: target.path = /opt/$${TARGET}/bin
+#!isEmpty(target.path): INSTALLS += target
+
+# ATBAPP interface
+HEADERS += \
+    include/interfaces.h \
+    src/ATBAPP/ATBAPPplugin.h \
+    src/ATBAPP/DeviceControllerInterface.h \
+    src/ATBAPP/ATBHealthEvent.h \
+    src/ATBAPP/ATBDeviceControllerPlugin.h \
+    src/ATBAPP/Utils.h
+
+SOURCES += \
+    src/ATBAPP/ATBHealthEvent.cpp \
+    src/ATBAPP/ATBDeviceControllerPlugin.cpp \
+    src/ATBAPP/Utils.cpp
+
+DISTFILES += \
+    generate-version.sh
+
+
+# Define how to create version.h
+VERSION_H = $$PWD/include/version.h
+version.output = $$PWD/include/version.h
+version.commands = $$PWD/generate-version.sh $${ARCH} $${TARGET} $${INTERFACE} $${INTERFACE_DEFINITION} $${VERSION_H}
+version.depends = FORCE
+version.input = VERSION_H
+version.variable_out = HEADERS
+QMAKE_EXTRA_COMPILERS += version
+QMAKE_CLEAN += $${PWD}/include/version.h

generate-version.sh

@@ -0,0 +1,155 @@
+#!/bin/bash
+
+VERSION_STRING=""
+
+#GIT='/cygdrive/c/Program Files \(x86\)/Git/bin/git'
+GIT=git
+
+
+
+
+parse_git_branch () {
+    $GIT branch --no-color 2> /dev/null | sed -e '/^[^*]/d' -e "s/* \(.*\)/\1/"
+}
+
+
+ARCH=$1
+TARGET=$2
+INTERFACE=$3
+INTERFACE_DEFINITION=$4
+VERSION_H=$5
+
+SCRIPT=$(readlink -f $0)
+SCRIPTPATH=`dirname $SCRIPT`
+OUTPUTDIR=$(pwd)
+echo " current dir is : " $(pwd)
+echo $SCRIPT
+echo $SCRIPTPATH
+
+echo "changing dir to script path: " $SCRIPTPATH
+cd $SCRIPTPATH
+
+# set version string ##################################################################
+if [ -z $VERSION_STRING ] ; then
+  VERSION_STRING=$(date +%Y%m%d_%H%M)
+fi
+GIT_DESCRIBE=$($GIT describe)
+GIT_BRANCH=$(parse_git_branch)
+
+# extract path from branchname:
+IFS='_' read -ra TMP_ARRAY <<< "${GIT_BRANCH}"
+BRANCH_PATH=${TMP_ARRAY[0]}
+
+
+
+# detect if we have a development version:
+if [ ${#TMP_ARRAY[1]} -gt 0 ] ; then
+  DEV_SUFFIX="_dev"
+else
+  DEV_SUFFIX=""
+fi
+
+# detect if git status is dirty
+GIT_DESCRIBE_DIRTY=$($GIT describe --dirty)
+if [ "${GIT_DESCRIBE_DIRTY:(-6)}" == "-dirty" ] ; then
+  DIRTY_SUFFIX="_dirty"
+else
+  DIRTY_SUFFIX=""
+fi
+
+
+if [ -n "$DIRTY_SUFFIX" ] || [ -n "$DEV_SUFFIX" ] ; then
+  DEVDIRTY=true
+else
+  DEVDIRTY=false
+fi
+
+
+# extract interface definition 
+
+#
+#Q_DECLARE_INTERFACE(CCInterface,
+#         "eu.atb.ptu.plugin.CCInterface/2.9.0")
+# -> extract whole string within quotation marks
+INTERFACE_VERSION=$(grep 'eu.atb.ptu.plugin.' ${INTERFACE_DEFINITION})
+# get string within quotes:
+INTERFACE_VERSION=`echo ${INTERFACE_VERSION} | awk -F \" '{print $2}'`
+
+
+#
+# write version.h
+
+
+echo "     TARGET is: $TARGET"
+echo "     ARCH   is: $ARCH"
+echo " "
+echo "     PluginName: $TARGET"
+echo "     Interface:  $INTERFACE"
+echo "     InterfaceVersion: $INTERFACE_VERSION"
+echo " "
+echo "     new version is:  $VERSION_STRING"
+echo "     git describe is: $GIT_DESCRIBE"
+echo "     git branch is:   $GIT_BRANCH"
+echo "     branch-path is:  $BRANCH_PATH"
+echo "  "
+
+echo "     dev suffix:     $DEV_SUFFIX"
+echo "     dirty suffix:   $DIRTY_SUFFIX"
+
+
+PLUGIN_VERSION=${VERSION_STRING}
+#ATB_QT_GIT_DESCRIBE=${GIT_DESCRIBE}_${GIT_BRANCH}
+PLUGIN_GIT_DESCRIBE=${GIT_DESCRIBE}_${BRANCH_PATH}${DEV_SUFFIX}${DIRTY_SUFFIX}
+
+#TARGET=IngenicoZVT_CCPlugin
+
+
+# build version.h #####################################################################
+
+echo "     building new version info (version.h) ..."
+
+
+
+
+echo "#ifndef VERSION_H"   >  ${VERSION_H}
+echo "#define VERSION_H"   >> ${VERSION_H}
+echo ""                    >> ${VERSION_H}
+echo ""                    >> ${VERSION_H}
+echo "#define INTERFACE_VERSION \"${INTERFACE_VERSION}\""      >> ${VERSION_H}
+echo "#define PLUGIN_VERSION \"${PLUGIN_VERSION}\""           >> ${VERSION_H}
+echo ""                                                       >> ${VERSION_H}
+echo "#define PLUGIN_GIT_DESCRIBE \"${PLUGIN_GIT_DESCRIBE}\"" >> ${VERSION_H}
+echo ""                                                       >> ${VERSION_H}
+echo ""                                                       >> ${VERSION_H}
+
+cat <<EOT >> ${VERSION_H}
+
+const std::string pluginInfoString = R"(
+{
+    "Interface": "${INTERFACE}",
+    "InterfaceVersion": "${INTERFACE_VERSION}",
+    "PluginName": "${TARGET}",
+    "Version": "${PLUGIN_VERSION}",
+    "git-describe": "${PLUGIN_GIT_DESCRIBE}",
+}
+)";
+
+EOT
+
+echo ""                                              >> ${VERSION_H}
+echo ""                                              >> ${VERSION_H}
+if [ ${DEVDIRTY} == "true" ] ; then
+echo "#define DEVDIRTY"                              >> ${VERSION_H}
+echo ""                                              >> ${VERSION_H}
+echo ""                                              >> ${VERSION_H}
+fi
+echo "#define SYSTEM_ARCH \"${ARCH}\""               >> ${VERSION_H}
+echo "#define ARCH_${ARCH}"                          >> ${VERSION_H}
+echo ""                                              >> ${VERSION_H}
+echo "" 					     >> ${VERSION_H}
+echo "#endif //VERSION_H"  >> ${VERSION_H}
+
+
+
+
+

src/ATBAPP/ATBAPPplugin.h

@@ -0,0 +1,22 @@
+#ifndef ATBAPPPLUGIN_H
+#define ATBAPPPLUGIN_H
+
+/***********************************************************
+ * a simple class with only one method for plugin info
+ */
+#include <QObject>
+#include <QString>
+
+class ATBAPPplugin
+{
+
+public:
+    virtual const QString & getPluginInfo() = 0;
+};
+
+Q_DECLARE_INTERFACE(ATBAPPplugin,
+                    "eu.atb.ptu.plugin.ATBAPPplugin/0.9")
+
+
+
+#endif // ATBAPPPLUGIN_H

src/ATBAPP/ATBDeviceControllerPlugin.cpp

@@ -0,0 +1,684 @@
+#include "src/ATBAPP/ATBDeviceControllerPlugin.h"
+#include "src/ATBAPP/ATBHealthEvent.h"
+#include "src/ATBAPP/Utils.h"
+
+#include <QTimer>
+#include <QTextCodec>
+#include <QDebug>
+
+#include <QPluginLoader>
+#include <QDateTime>
+#include <QFileInfo>
+
+#include <cstdlib>
+
+
+
+ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent) : QObject(parent),
+    pluginState(PLUGIN_STATE::NOT_INITIALIZED)
+{
+    this->pluginInfo = QString::fromUtf8(pluginInfoString.c_str());
+
+    if (!this->private_loadCashAgentLib("")) {
+        return;
+    }
+
+
+
+
+    //connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_templatePrintFinished_OK()),  this, SLOT(onPrintFinishedOK()),  Qt::QueuedConnection);
+    //connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_templatePrintFinished_Err()), this, SLOT(onPrintFinishedERR()), Qt::QueuedConnection);
+
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_gotNewCoin()),       this, SLOT(onCashGotCoin()),                Qt::QueuedConnection);
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByMax()),     this, SLOT(onCashPayStopByMax()),           Qt::QueuedConnection);
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByEscrow()),  this, SLOT(onCashPayStopByEscrow()),        Qt::QueuedConnection);
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByError()),   this, SLOT(onCashPayStopByError()),         Qt::QueuedConnection);
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByTimeout()), this, SLOT(onCashPayStopByTimeout()),       Qt::QueuedConnection);
+
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorServiceDoorOpened()),     this, SLOT(onServiceDoorOpened()), Qt::QueuedConnection);  // switch to ModeSERVICE
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorVaultDoorOpened()),       this, SLOT(onVaultDoorOpened()),   Qt::QueuedConnection);    // Screen?? with message
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCoinBoxRemoved()),        this, SLOT(onCoinBoxRemoved()),    Qt::QueuedConnection);     // Create/Send Account
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCoinBoxInserted()),       this, SLOT(onCoinBoxInserted()),   Qt::QueuedConnection);
+    //connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCBinAndAllDoorsClosed()), this, SLOT( ??? )), Qt::QueuedConnection);
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorAllDoorsClosed()),        this, SLOT(onAllDoorsClosed()),    Qt::QueuedConnection);     // check for errors, switch to mode IDLE
+
+
+    this->currentSelectedTicketType = 0;
+    this->currentCashState = CASH_STATE::CACHE_EMPTY;
+}
+
+ATBDeviceControllerPlugin::~ATBDeviceControllerPlugin() {}
+
+PLUGIN_STATE ATBDeviceControllerPlugin::initDCPlugin(QObject *healthEventReceiver, const QSettings & settings)
+{
+    this->healthEventReceiver = healthEventReceiver;
+
+    // read variables from setting
+    QString serialPort = settings.value("DEVICE_CONTROLLER/serialPort", "ttymxc2").toString();
+    QByteArray printerEncoding = settings.value("DEVICE_CONTROLLER/printerEnconding", "ISO 8859-2").toString().toLatin1();
+
+    // open serial port
+    hw->dc_openSerial(5, "115200", serialPort, 1);
+
+    hw->dc_autoRequest(true);
+
+    hw->rtc_setDateTime();
+
+    // this is necessary to init the CashAgentLib (!)
+    hw->vend_failed();
+
+
+    // text encoding for printer
+    this->codec = QTextCodec::codecForName(printerEncoding);
+
+
+
+    this->pluginState = PLUGIN_STATE::INITIALIZED;
+
+    return pluginState;
+}
+
+
+// Handle Mode-Changes --------------------------------------------------------
+
+void ATBDeviceControllerPlugin::onChangedProgramModeToSELL()
+{
+    //hw->dc_autoRequest(true);
+}
+
+void ATBDeviceControllerPlugin::onChangedProgramModeToSERVICE()
+{
+    //hw->dc_autoRequest(true);
+}
+
+void ATBDeviceControllerPlugin::onChangedProgramModeToIDLE()
+{
+    //hw->dc_autoRequest(false);  // <-- TODO: ???
+}
+
+void ATBDeviceControllerPlugin::onChangedProgramModeToOOO()
+{
+
+}
+
+
+// TASKS: Cash handling -------------------------------------------------------
+void ATBDeviceControllerPlugin::requestStartCashInput(const QString & amount)
+{
+    qCritical() << "Start Cash vending with amount = " << amount;
+
+    uint32_t amountInt = static_cast<uint32_t>(amount.toUInt());
+
+    if (amountInt == 0) amountInt = UINT_MAX;
+
+    hw->cash_startPayment(amountInt);
+}
+
+void ATBDeviceControllerPlugin::requestStopCashInput()
+{
+    hw->cash_stopPayment();
+
+    // we need new cash value in application...
+    QTimer::singleShot(500, this, SLOT(onCashPayStopedSuccess()));
+}
+
+void ATBDeviceControllerPlugin::cashCollect()
+{
+    hw->vend_success();
+    this->currentCashState = CASH_STATE::CACHE_EMPTY;
+}
+
+void ATBDeviceControllerPlugin::cashAbort()
+{
+    hw->vend_failed();
+    this->currentCashState = CASH_STATE::CACHE_EMPTY;
+}
+
+// TASKS: Account -------------------------------------------------------------
+
+// for an external account request, e.g. by an ui-button:
+void ATBDeviceControllerPlugin::requestAccount()
+{
+    qCritical() << "ATBDeviceControllerPlugin::requestAccount()";
+
+    this->private_startAccount();
+}
+
+void ATBDeviceControllerPlugin::private_startAccount()
+{
+    uint16_t backupedAccNumbers[8];    // array of account numbers
+    uint8_t nrOfVals;                  // number of saved accounts
+
+    // it is not defined which one is the latest account
+    hw->log_getHoldAccountNumbers(&nrOfVals, backupedAccNumbers);
+
+    // DEBUG
+    qCritical() << "Start account: ";
+    qCritical() << "                  nrOfVals = " << nrOfVals;
+    for (int i=0; i<nrOfVals; ++i) {
+        qCritical() << "      backupedAccNumbers[" << i << "] = " << backupedAccNumbers[0];
+    }
+
+    qsort( backupedAccNumbers, nrOfVals, sizeof (uint16_t), Utils::compare );
+
+    uint16_t latestAccountNumber = backupedAccNumbers[nrOfVals-1];
+
+
+    // DEBUG
+    qCritical() << "       latestAccountNumber = " << latestAccountNumber;
+
+    hw->log_selectVaultRecord(latestAccountNumber);
+
+    this->accountCheckCounter = 0;
+    QTimer::singleShot(500, this, SLOT(private_checkAccountData()));
+}
+
+void ATBDeviceControllerPlugin::private_checkAccountData()
+{
+    // DEBUG
+    qCritical() << "      --> private_checkAccountData()";
+
+    if (hw->log_chkIfVaultRecordAvailable()) {
+        this->private_getAccountData();
+    }
+    else {
+        if (this->accountCheckCounter < 10) {
+            this->accountCheckCounter++;
+            QTimer::singleShot(500, this, SLOT(private_checkAccountData()));
+        }
+        else {
+            // cannot get accountData within ~10*500ms
+            qCritical() << "checkAccountData() failed";
+
+            // TODO: create and send an HealthEvent...
+        }
+    }
+}
+
+
+void ATBDeviceControllerPlugin::private_getAccountData()
+{
+    // DEBUG
+    qCritical() << "      --> private_getAccountData()";
+
+    struct T_vaultRecord retVR;
+
+    hw->log_getVaultRecord(&retVR);
+
+    QHash<QString, QVariant> accountData;
+
+    accountData.insert("AccountingNumber", QString::number(retVR.AccountingNumber));
+
+    for (uint i = 0; i < sizeof(retVR.coinsInVault); ++i) {
+        accountData.insert("COIN_" + QString::number(i) + "_Quantity",  retVR.coinsInVault[i]);
+        accountData.insert("COIN_" + QString::number(i) + "_Value",     retVR.coinDenomination[i]);
+
+        // DEBUG
+        qCritical() << "COIN_" + QString::number(i) + "_Quantity = " << accountData["COIN_" + QString::number(i) + "_Quantity"];
+        qCritical() << "COIN_" + QString::number(i) + "_Value    = " << accountData["COIN_" + QString::number(i) + "_Value"];
+    }
+
+    emit requestAccountResponse(accountData);
+}
+
+
+// Door Events / Hardware contacts --------------------------------------------
+void ATBDeviceControllerPlugin::onServiceDoorOpened()
+{
+    qCritical() << "ATBDeviceControllerPlugin::onServiceDoorOpened()";
+
+    // switch to mode service
+    emit this->requestModeSERVICE();
+
+    // TODO:
+    // - create an HealthEvent (-> ISMAS-Event)
+}
+
+void ATBDeviceControllerPlugin::onVaultDoorOpened()
+{
+    // TODO:
+    // - show special screen / message on screen
+    // - create an HealthEvent (-> ISMAS-Event)
+    qCritical() << "ATBDeviceControllerPlugin::onVaultDoorOpened()";
+}
+
+void ATBDeviceControllerPlugin::onCoinBoxRemoved()
+{
+    qCritical() << "ATBDeviceControllerPlugin::onCoinBoxRemoved()";
+
+    this->private_startAccount();
+}
+
+void ATBDeviceControllerPlugin::onCoinBoxInserted()
+{
+    qCritical() << "ATBDeviceControllerPlugin::onCoinBoxInserted()";
+}
+
+void ATBDeviceControllerPlugin::onAllDoorsClosed()
+{
+    // TODO:
+    // - check for errors, switch to mode IDLE
+
+    qCritical() << "ATBDeviceControllerPlugin::onAllDoorsClosed()";
+
+    emit this->requestModeIDLE();
+}
+
+
+// TASKS: printing ------------------------------------------------------------
+void ATBDeviceControllerPlugin::requestPrintTicket(const QHash<QString, QVariant> & printingData)
+{
+    struct T_dynDat *dynTicketData = new T_dynDat;
+    memset(dynTicketData, 0, sizeof(*dynTicketData));
+
+    qCritical() << "ATBDeviceControllerPlugin::requestPrintTicket( "         << endl
+                << "     licenseplate = " << printingData["licenseplate"]    << endl
+                << "           amount = " << printingData["amount"]          << endl
+                << "       parkingEnd = " << printingData["parkingEnd"]      << endl
+                << "  currentDateTime = " << printingData["currentDateTime"] << endl;
+
+    QDateTime parkingEndDateTime = QDateTime::fromString(printingData["parkingEnd"].toString(),  Qt::ISODate);
+    QDateTime currentDateTime    = QDateTime::fromString(printingData["currentDateTime"].toString(), Qt::ISODate);
+
+    /* -----------------------------------------------------------------------------------------
+     * note: the following highly depends on printer template files!
+     * -----------------------------------------------------------------------------------------
+     */
+
+    // set dynamic printer data:
+    QByteArray ba_licenseplate = codec->fromUnicode(printingData["licenseplate"].toString());
+    memcpy((char*)dynTicketData->licensePlate, ba_licenseplate.data(), std::min(ba_licenseplate.size(),8));
+
+    QByteArray ba_amount = codec->fromUnicode(printingData["amount"].toString());
+    memcpy((char*)dynTicketData->vendingPrice,  ba_amount.data(), std::min(ba_amount.size(),8));
+
+    QByteArray ba_parkingEndTime = codec->fromUnicode(parkingEndDateTime.toString("hh:mm"));
+    memcpy((char*)dynTicketData->parkingEnd,  ba_parkingEndTime.data(), std::min(ba_parkingEndTime.size(),8));
+
+    QByteArray ba_parkingEndDate = codec->fromUnicode(parkingEndDateTime.toString("dd.MM.yy"));
+    memcpy((char*)dynTicketData->currentTime,  ba_parkingEndDate.data(), std::min(ba_parkingEndDate.size(),8));
+    // ! and yes... 'ParkingEndDate' is 'currentTime'
+
+    QByteArray ba_currentDate = codec->fromUnicode(currentDateTime.toString("dd.MM.yy"));
+    memcpy((char*)dynTicketData->currentDate,  ba_currentDate.data(), std::min(ba_currentDate.size(),8));
+
+
+    // DEBUG
+    /*
+    uint8_t* buf = dynTicketData->licensePlate;
+    int length = 64;
+    for (int i = 0; i < length; ++i) {
+            fprintf(stderr, "%d %02x %c\n", i, buf[i], buf[i]);
+    }
+    fprintf(stderr, "\n");
+    */
+
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::requestPrintTicket()";
+
+    if (!this->hw->dc_isPortOpen()) {
+        qCritical() << "    ... serial port is not open!";
+        this->onPrintFinishedERR();
+        return;
+    }
+
+
+    // TODO: wird hier nur 'licensePlate' gedruckt?
+    if (!this->hw->prn_sendDynamicPrnValues(dynTicketData->licensePlate)) {
+        this->errorCode = "hwapi::prn_sendDynamicPrnValues";
+        this->errorDescription = "hwapi method 'hwapi::prn_sendDynamicPrnValues' result is false";
+
+        qCritical() << "ERROR:";
+        qCritical() << "ATBDeviceControllerPlugin::requestPrintTicket( "        << endl
+                    << "     licenseplate = " << printingData["licenseplate"]   << endl
+                    << "           amount = " << printingData["amount"]         << endl
+                    << "       parkingEnd = " << printingData["parkingEnd"]     << endl
+                    << "      currentTime = " << printingData["currentTime"]    << endl
+                    << "      currentDate = " << printingData["currentDate"]    << endl;
+
+
+        this->onPrintFinishedERR();
+        return;
+    }
+
+    // set ticket type:
+    //      00281 - Szeged:
+    //          1 - Cash / ShortTimeParking
+    //          2 - Card / ShortTimeParking
+    //          3 - Cash / DayTicket
+    //          4 - Card / DayTicket
+    QString paymentType = printingData["paymentType"].toString(); // must be "CASH" | "CARD"
+    QString productName = printingData["product"].toString();     // must be "ShortTimeParking" | "DayTicket"
+
+    if ( (paymentType == "CASH") && (productName == "ShortTimeParking") ) {
+        this->currentSelectedTicketType = 1;
+    }
+    else
+    if ( (paymentType == "CARD") && (productName == "ShortTimeParking") ) {
+        this->currentSelectedTicketType = 2;
+    }
+    else
+    if ( (paymentType == "CASH") && (productName == "DayTicket") ) {
+        this->currentSelectedTicketType = 3;
+    }
+    else
+    if ( (paymentType == "CARD") && (productName == "DayTicket") ) {
+        this->currentSelectedTicketType = 4;
+    }
+    else {
+        qCritical() << "ERROR: requestPrintTicket(): invalid payment data:";
+        qCritical() << "       paymentType = " << paymentType   << endl
+                    << "       productName = " << productName   << endl;
+        this->onPrintFinishedERR();
+        return;
+    }
+
+    QTimer::singleShot(1000, this, SLOT(onPrinterDataPrepared()));
+}
+
+
+
+void ATBDeviceControllerPlugin::onPrinterDataPrepared()
+{
+    this->hw->prn_printKombiticket(this->currentSelectedTicketType);
+
+    // FAKE SIGNAL:
+    QTimer::singleShot(4000, this, SLOT(onPrintFinishedOK()));
+
+
+    // old: use printer templates:
+    // this->currentTemplate = 1;
+    // this->onPrinterPrintNextTemplate();
+}
+
+
+void ATBDeviceControllerPlugin::onPrinterPrintNextTemplate()
+{
+    qCritical() << "     ... print template " << this->currentTemplate;
+
+    if (!this->hw->prn_printTemplate(this->currentTemplate)) {
+        this->errorCode = "hwapi::prn_printTemplate";
+        this->errorDescription = QString("hwapi method 'hwapi::onPrinterPrintNextTemplate(%1)' result is false").arg(this->currentTemplate);
+        this->onPrintFinishedERR();
+        return;
+    }
+
+    if (this->currentTemplate >= 3) {
+        // all templates are printed
+        this->currentTemplate = 0;
+
+        // FAKE SIGNAL:
+        QTimer::singleShot(500, this, SLOT(onPrintFinishedOK()));
+    }
+    else {
+        // print next template
+        this->currentTemplate++;
+        QTimer::singleShot(2000, this, SLOT(onPrinterPrintNextTemplate()));
+    }
+
+}
+
+
+/************************************************************************************************
+ * private slots, interface to low level hwapi
+ *
+ */
+void ATBDeviceControllerPlugin::onPrintFinishedOK()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onPrintFinishedOK()";
+
+    emit this->printTicketFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                                   // TODO: TicketNumber
+                                   "",
+                                   "");
+}
+void ATBDeviceControllerPlugin::onPrintFinishedERR()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onPrintFinishedERR()";
+
+
+    this->errorCode = "PRINTER";               // TODO: get more detailed error code from low level API
+    this->errorDescription = "Printer error";  // TODO: get more detailed error description from low level API
+
+    emit this->printTicketFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                                   this->errorCode,
+                                   this->errorDescription);
+}
+
+
+
+/************************************************************************************************
+ * cash payment
+ */
+void ATBDeviceControllerPlugin::onCashGotCoin()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onGotCoin()";
+
+    this->currentCashState = CASH_STATE::CACHE_INPUT;
+
+    uint32_t amountInt = this->hw->getInsertedAmount();
+
+    QString amountString = QString::number(amountInt);
+
+
+    emit this->cashInputEvent(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                              nsDeviceControllerInterface::CASH_STATE::CACHE_INPUT,
+                              amountString,
+                              "",
+                              "");
+}
+
+
+void ATBDeviceControllerPlugin::onCashPayStopByMax()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onCashVendStopByMax()";
+
+    // we need new cash value in application...
+    QTimer::singleShot(500, this, SLOT(onCashPayStopedSuccess()));
+
+}
+
+void ATBDeviceControllerPlugin::onCashPayStopByEscrow()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStopByEscrow()";
+
+    uint32_t amountInt = this->hw->getInsertedAmount();
+
+    QString amountString = QString::number(amountInt);
+
+    emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                              amountString,
+                              "",
+                              "");
+}
+
+void ATBDeviceControllerPlugin::onCashPayStopByError()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStopByError()";
+
+    uint32_t amountInt = this->hw->getInsertedAmount();
+
+    QString amountString = QString::number(amountInt);
+
+    emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                              amountString,
+                              "",
+                              "");
+}
+
+void ATBDeviceControllerPlugin::onCashPayStopByTimeout()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStopByTimeout()";
+
+    uint32_t amountInt = this->hw->getInsertedAmount();
+
+    QString amountString = QString::number(amountInt);
+
+    emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                              amountString,
+                              "",
+                              "");
+}
+
+void ATBDeviceControllerPlugin::onCashPayStopedSuccess()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStoped()";
+
+    uint32_t amountInt = this->hw->getInsertedAmount();
+
+    QString amountString = QString::number(amountInt);
+
+    qCritical() << "      insertedAmount (int) = " << amountInt;
+    qCritical() << "            insertedAmount = " << amountString;
+
+    emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                              amountString,
+                              "",
+                              "");
+}
+
+
+
+/**
+ * Load CashAgentLib
+ * @brief ATBDeviceControllerPlugin::private_loadCashAgentLib
+ * @param pluginName
+ * @return
+ */
+bool ATBDeviceControllerPlugin::private_loadCashAgentLib(QString pluginName)
+{
+    if (pluginName == "") {
+
+        // search list for plugin (.so) file:
+        QStringList pluginNameList;
+        pluginNameList << "/usr/lib/libCAmaster.so"
+                       << "/usr/lib/libCashAgentLib.so";
+        // using C++11 range based loop:
+        for (const auto& filename : pluginNameList) {
+            if (QFileInfo(filename).isReadable()) {
+                pluginName = filename;
+                break;
+            }
+        }
+
+        if (pluginName == "") {
+            qCritical() << "ATBDeviceControllerPlugin: CashAgentLib not installed!";
+            this->errorCode = "CashAgentLib::NOT_FOUND";
+            this->errorDescription = "ERROR: no CashAgentLib: ";
+            return false;
+        }
+
+    }
+
+    if (!QLibrary::isLibrary(pluginName)) {
+        qCritical() << "ATBDeviceControllerPlugin: can not load CashAgentLib: " << pluginName;
+        this->errorCode = "CashAgentLib::NO_LIBRARY";
+        this->errorDescription = "ERROR: can not load CashAgentLib: " + pluginName;
+        return false;
+    }
+
+    QPluginLoader* pluginLoader = new QPluginLoader();
+    pluginLoader->setFileName(pluginName);
+
+    QObject* plugin = pluginLoader->instance();
+    if (!pluginLoader->isLoaded()) {
+        qCritical() << "ATBDeviceControllerPlugin: can not instantiate CashAgentLib: " << pluginName;
+        qCritical() << "               error: " << pluginLoader->errorString();
+        this->errorCode = "CashAgentLib::NO_INSTANCE";
+        this->errorDescription = "ERROR: can not instantiate CashAgentLib: " + pluginName;
+        return false;
+    }
+
+    if (plugin == nullptr) {
+        qCritical() << "ATBDeviceControllerPlugin: plugin is NULL";
+        this->errorCode = "CashAgentLib::INSTANCE_IS_NULL";
+        this->errorDescription = "ERROR: CashAgentLib instance is NULL: " + pluginName;
+    }
+
+    qCritical() << "ATBDeviceControllerPlugin: instantiate CashAgentLib: " << pluginName;
+
+    this->hw = qobject_cast<hwinf*>(plugin);
+
+    if (this->hw == nullptr) {
+        qCritical() << "ATBDeviceControllerPlugin: hw is NULL";
+        this->errorCode = "CashAgentLib::HW_IS_NULL";
+        this->errorDescription = "ERROR: CashAgentLib object_cast is NULL: " + pluginName;
+        return false;
+    }
+
+    qCritical() << "ATBDeviceControllerPlugin: loaded CashAgentLib";
+
+    return true;
+}
+
+
+
+/************************************************************************************************
+ * Mandatory plugin methods
+ *
+ */
+
+PLUGIN_STATE ATBDeviceControllerPlugin::getState()
+{
+    return this->pluginState;
+}
+
+QString & ATBDeviceControllerPlugin::getLastError()
+{
+    return this->errorCode;
+}
+
+const QString & ATBDeviceControllerPlugin::getLastErrorDescription()
+{
+    return this->errorDescription;
+}
+
+const QString & ATBDeviceControllerPlugin::getPluginInfo()
+{
+    return this->pluginInfo;
+}
+
+
+const QString ATBDeviceControllerPlugin::getString(nsDeviceControllerInterface::RESULT_STATE resultState)
+{
+    QString str;
+
+    switch (resultState) {
+    case nsDeviceControllerInterface::RESULT_STATE::SUCCESS:
+        str = QString("RESULT_STATE::SUCCESS");
+        break;
+    case nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND:
+        str = QString("RESULT_STATE::ERROR_BACKEND");
+        break;
+    case nsDeviceControllerInterface::RESULT_STATE::ERROR_TIMEOUT:
+        str = QString("RESULT_STATE::ERROR_TIMEOUT");
+        break;
+    case nsDeviceControllerInterface::RESULT_STATE::ERROR_PROCESS:
+        str = QString("RESULT_STATE::ERROR_PROCESS");
+        break;
+    case nsDeviceControllerInterface::RESULT_STATE::ERROR_RETRY:
+        str = QString("RESULT_STATE::ERROR_RETRY");
+        break;
+    case nsDeviceControllerInterface::RESULT_STATE::INFO:
+        str = QString("RESULT_STATE::INFO");
+        break;
+    }
+    return str;
+
+}
+
+/************************************************************************************************
+ * ... end
+ */
+
+#if QT_VERSION < 0x050000
+Q_EXPORT_PLUGIN2( ATBDeviceControllerPlugin, ATBDeviceControllerPlugin )
+#endif

src/ATBAPP/ATBDeviceControllerPlugin.h

@@ -0,0 +1,166 @@
+#ifndef ATBDEVICECONTROLLERPLUGIN_H
+#define ATBDEVICECONTROLLERPLUGIN_H
+
+#include <QObject>
+
+#include "src/ATBAPP/DeviceControllerInterface.h"
+#include "src/ATBAPP/ATBAPPplugin.h"
+#include "version.h"
+
+
+
+#include "interfaces.h"
+
+#include <unistd.h>
+#include <thread>
+#include <memory>
+#include <QSharedMemory>
+
+
+class QTextCodec;
+
+
+using namespace nsDeviceControllerInterface;
+
+class QSettings;
+
+class ATBDeviceControllerPlugin : public QObject,
+        public DeviceControllerInterface
+{
+    Q_OBJECT
+    Q_INTERFACES(ATBAPPplugin)
+    Q_INTERFACES(DeviceControllerInterface)
+    #if QT_VERSION >= 0x050000
+    Q_PLUGIN_METADATA( IID "ATBDeviceControllerPlugin" )
+    #endif
+
+public:
+    explicit ATBDeviceControllerPlugin(QObject *parent = nullptr);
+    ~ATBDeviceControllerPlugin();
+
+    // ----------------------------------------------------------------------------
+    // interface:
+    PLUGIN_STATE initDCPlugin(QObject *healthEventReceiver, const QSettings & settings);
+
+    // TASKS: Cash handling -------------------------------------------------------
+    void requestStartCashInput(const QString & amount);
+    void requestStopCashInput();
+    void cashCollect();
+    void cashAbort();
+
+    // TASKS: printing ------------------------------------------------------------
+    void requestPrintTicket(const QHash<QString, QVariant> & printingData);
+
+    // TASKS: Account -------------------------------------------------------------
+    void requestAccount();
+
+    // mandantory ATBAPP plugin methods: ------------------------------------------
+    nsDeviceControllerInterface::PLUGIN_STATE getState();
+    QString & getLastError();
+    const QString & getLastErrorDescription();
+
+    const QString & getPluginInfo();
+
+    // helpers e.g. for debug / log
+    const QString getString(nsDeviceControllerInterface::RESULT_STATE resultState);;
+
+public slots:
+    void onChangedProgramModeToSELL();
+    void onChangedProgramModeToSERVICE();
+    void onChangedProgramModeToIDLE();
+    void onChangedProgramModeToOOO();
+
+
+
+
+
+signals:
+    void printTicketFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & errorCode,
+                                     const QString & errorDescription);
+
+    void cashInputEvent(nsDeviceControllerInterface::RESULT_STATE resultState,
+                        nsDeviceControllerInterface::CASH_STATE cashState,
+                        const QString & newCashValue,
+                        const QString & errorCode,
+                        const QString & errorDescription);
+
+    void cashInputFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & newCashValue,
+                                     const QString & errorCode,
+                                     const QString & errorDescription);
+
+    void requestModeSERVICE();
+    void requestModeIDLE();
+    void requestModeOOO();
+
+    void requestAccountResponse(const QHash<QString, QVariant> & accountData);
+
+
+
+    void Error(
+            const QString & errorCode,
+            const QString & errorDescription);
+
+
+
+
+private:
+   QString errorCode;
+   QString errorDescription;
+   QString pluginInfo;
+
+   int currentTemplate;
+
+
+   bool useDebug;
+
+   PLUGIN_STATE pluginState;
+
+   QObject* healthEventReceiver;
+
+   hwinf* hw;
+
+   QTextCodec *codec;
+
+   bool private_loadCashAgentLib(QString pluginName);
+
+   quint8 currentSelectedTicketType;
+
+   nsDeviceControllerInterface::CASH_STATE currentCashState;
+
+   // counts failed hw->log_chkIfVaultRecordAvailable()
+   int accountCheckCounter;
+
+
+private slots:
+   // printer
+
+   void onPrinterDataPrepared();
+   void onPrinterPrintNextTemplate();
+
+   void onPrintFinishedOK();
+   void onPrintFinishedERR();
+
+   // cash payment
+   void onCashGotCoin();
+   void onCashPayStopedSuccess();
+   void onCashPayStopByMax();
+   void onCashPayStopByEscrow();
+   void onCashPayStopByError();
+   void onCashPayStopByTimeout();
+
+   // doors and hardware contacts
+   void onServiceDoorOpened();
+   void onVaultDoorOpened();
+   void onCoinBoxRemoved();
+   void onCoinBoxInserted();
+   void onAllDoorsClosed();
+
+   // account handling
+   void private_startAccount();
+   void private_checkAccountData();
+   void private_getAccountData();
+};
+
+#endif // ATBDEVICECONTROLLERPLUGIN_H

src/ATBAPP/ATBHealthEvent.cpp

@@ -0,0 +1,25 @@
+#include "src/ATBAPP/ATBHealthEvent.h"
+
+ATBHealthEvent::ATBHealthEvent(ATB_HEALTH_MODE mode, const QString & errorNumber, const QString & errorDescription) :
+    QEvent(ATB_HEALTH_EVENT),
+    healthMode(mode),
+    errorNumber(errorNumber),
+    errorDescription(errorDescription)
+{
+
+}
+
+QString ATBHealthEvent::getErrorNumber()
+{
+    return this->errorNumber;
+}
+
+QString ATBHealthEvent::getErrorDescription()
+{
+    return this->errorDescription;
+}
+
+ATB_HEALTH_MODE ATBHealthEvent::getMode()
+{
+    return this->healthMode;
+}

src/ATBAPP/ATBHealthEvent.h

@@ -0,0 +1,44 @@
+#ifndef ATBHEALTHEVENT_H
+#define ATBHEALTHEVENT_H
+
+#include <QEvent>
+#include <QString>
+
+enum class ATB_HEALTH_MODE : quint8;
+
+const QEvent::Type ATB_HEALTH_EVENT = static_cast<QEvent::Type>(QEvent::User + 1);
+
+
+class ATBHealthEvent : public QEvent
+{
+
+public:
+    ATBHealthEvent(ATB_HEALTH_MODE mode, const QString & errorNumber, const QString & errorDescription);
+
+    QString getErrorNumber();
+    QString getErrorDescription();
+    ATB_HEALTH_MODE getMode();
+
+signals:
+
+public slots:
+
+
+private:
+    ATB_HEALTH_MODE healthMode;
+    QString errorNumber;
+    QString errorDescription;
+};
+
+
+enum class ATB_HEALTH_MODE : quint8 {
+    WARNING,
+    ERROR,
+    WARNING_CORRECTION,
+    ERROR_CORRECTION,
+    DEBUG,
+    STATE,
+    UNSPECIFIED
+};
+
+#endif // ATBHEALTHEVENT_H

src/ATBAPP/DeviceControllerInterface.h

@@ -0,0 +1,165 @@
+#ifndef DEVICECONTROLLERINTERFACE_H
+#define DEVICECONTROLLERINTERFACE_H
+
+#include <QtPlugin>
+
+#include <QSettings>
+#include <QString>
+
+#include "ATBAPPplugin.h"
+
+namespace nsDeviceControllerInterface {
+    enum class PLUGIN_STATE : quint8;
+    enum class RESULT_STATE : quint8;
+    enum class CASH_STATE   : quint8;
+}
+
+
+class DeviceControllerInterface : public ATBAPPplugin
+{
+    Q_INTERFACES(ATBAPPplugin)
+
+public:
+    virtual ~DeviceControllerInterface() {}
+
+    virtual nsDeviceControllerInterface::PLUGIN_STATE initDCPlugin(QObject *healthEventReceiver,
+                                                                   const QSettings & settings) = 0;
+
+    // TASKS: Cash handling -------------------------------------------------------
+    /**
+     * enables coin input
+     * amount = "0": pay-up
+     * amount > "0": pay-down
+     */
+    virtual void requestStartCashInput(const QString & amount) = 0;
+
+    /**
+     * called e.g. on Button "NEXT" in pay-up (direct coin input)
+     */
+    virtual void requestStopCashInput() = 0;
+
+    /**
+     * called e.g. on Button "NEXT" in pay-up (direct coin input)
+     */
+    virtual void cashCollect() = 0;
+    virtual void cashAbort() = 0;
+
+    // TASKS: Account -------------------------------------------------------------
+
+    virtual void requestAccount() = 0;
+
+
+    // TASKS: printing ------------------------------------------------------------
+    virtual void requestPrintTicket(const QHash<QString, QVariant> & printingData) = 0;
+
+
+    // mandantory ATBAPP plugin methods:
+    virtual nsDeviceControllerInterface::PLUGIN_STATE getState() = 0;
+    virtual const QString & getLastError() = 0;
+    virtual const QString & getLastErrorDescription() = 0;
+
+    // return a plugin description in JSON or XML
+    // -> ATBAPPplugin::getPluginInfo()
+
+    // helpers e.g. for debug / log
+    virtual const QString getString(nsDeviceControllerInterface::RESULT_STATE resultState) = 0;
+
+public slots:
+    virtual void onChangedProgramModeToSELL() = 0;
+    virtual void onChangedProgramModeToSERVICE() = 0;
+    virtual void onChangedProgramModeToIDLE() = 0;
+    virtual void onChangedProgramModeToOOO() = 0;
+
+signals:
+    virtual void printTicketFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & errorCode,
+                                     const QString & errorDescription) = 0;
+
+    /**
+     * emitted on e.g. a coin input
+     */
+    virtual void cashInputEvent(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                nsDeviceControllerInterface::CASH_STATE cashState,
+                                const QString & newCashValue,
+                                /* additional variables? */
+                                const QString & errorCode,
+                                const QString & errorDescription) = 0;
+
+    /**
+     * 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
+     */
+    virtual void cashInputFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & newCashValue,
+                                     /*  additional variables? */
+                                     const QString & errorCode,
+                                     const QString & errorDescription) = 0;
+
+
+    /**
+     * emitted e.g. if service door is opened
+     */
+    virtual void requestModeSERVICE() = 0;
+
+    /**
+     * emitted e.g. if doors are closed
+     */
+    virtual void requestModeIDLE() = 0;
+
+    /**
+     * emitted e.g. on severe errors
+     */
+    virtual void requestModeOOO() = 0;
+
+    /**
+     * emitted e.g. if service door is opened
+     */
+    virtual void requestAccountResponse(const QHash<QString, QVariant> & accountData) = 0;
+
+    /**
+     * emitted on error
+     * depending on errorCode:
+     * -> interrupt selling process
+     * -> machine can go to state OOO
+     * -> send error event to ISMAS
+     * -> ...
+     */
+    virtual void Error(
+            /*  additional variables? */
+            const QString & errorCode,
+            const QString & errorDescription) = 0;
+
+};
+
+
+Q_DECLARE_INTERFACE(DeviceControllerInterface,
+                    "eu.atb.ptu.plugin.DeviceControllerInterface/1.0")
+
+
+namespace nsDeviceControllerInterface {
+
+    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. */
+    };
+}
+
+#endif // DEVICECONTROLLERINTERFACE_H

src/ATBAPP/Utils.cpp

@@ -0,0 +1,18 @@
+#include "Utils.h"
+
+Utils::Utils(QObject *parent) : QObject(parent)
+{
+
+}
+
+
+
+int Utils::compare(const void* a, const void* b)
+{
+    int int_a = * ( (int*) a );
+    int int_b = * ( (int*) b );
+
+    if ( int_a == int_b ) return 0;
+    else if ( int_a < int_b ) return -1;
+    else return 1;
+}

src/ATBAPP/Utils.h

@@ -0,0 +1,23 @@
+#ifndef UTILS_H
+#define UTILS_H
+
+#include <QObject>
+
+
+class Utils : public QObject
+{
+    Q_OBJECT
+public:
+    static int compare(const void* a, const void* b);
+
+private:
+    explicit Utils(QObject *parent = nullptr);
+
+
+
+
+signals:
+
+};
+
+#endif // UTILS_H