Read dc-firmware-version: filter return value (null-character)

Reading dc-fw-version is somehow complicated ...
Id does not work reliable on startup, so we do read it also on every
diagRequest().
Version string is then stored in persistent data.
This data can be used e.g. by other tools to show the
device-controller-firmware-version.

DCPlugin.pro

@@ -45,7 +45,7 @@ contains( CONFIG, PTU5_YOCTO ) {
 TARGET   = ATBDeviceControllerPlugin
 #DESTDIR  = ../plugins
 INTERFACE = DeviceController
-INTERFACE_DEFINITION = $${PWD}/include/ATBAPP/DeviceControllerInterface.h
+INTERFACE_DEFINITION = $${PWD}/src/ATBAPP/DeviceControllerInterface.h
 
 DEFINES += DEVICECONTROLLERPLUGIN_LIBRARY
 
@@ -76,14 +76,24 @@ HEADERS += \
     src/ATBAPP/ATBHealthEvent.h \
     src/ATBAPP/ATBMachineEvent.h \
     src/ATBAPP/ATBDeviceControllerPlugin.h \
-    src/ATBAPP/Utils.h
+    src/ATBAPP/Utils.h \
+    src/ATBAPP/support/CashUtils.h \
+    src/ATBAPP/support/DBusControllerInterface.h \
+    src/ATBAPP/support/JSON.h \
+    src/ATBAPP/support/PTUSystem.h \
+    src/ATBAPP/support/PersistentData.h
 
 SOURCES += \
     src/ATBAPP/ATBHealthEvent.cpp \
     src/ATBAPP/ATBMachineEvent.cpp \
     src/ATBAPP/ATBDeviceControllerPlugin.cpp \
     src/ATBAPP/DeviceControllerDiag.cpp \
-    src/ATBAPP/Utils.cpp
+    src/ATBAPP/Utils.cpp \
+    src/ATBAPP/support/CashUtils.cpp \
+    src/ATBAPP/support/DBusControllerInterface.cpp \
+    src/ATBAPP/support/JSON.cpp \
+    src/ATBAPP/support/PTUSystem.cpp \
+    src/ATBAPP/support/PersistentData.cpp
 
 DISTFILES += \
     generate-version.sh

generate-version.sh

@@ -70,6 +70,8 @@ fi
 #
 #Q_DECLARE_INTERFACE(CCInterface,
 #         "eu.atb.ptu.plugin.CCInterface/2.9.0")
+#Q_DECLARE_INTERFACE(DeviceControllerInterface,
+#         "eu.atb.ptu.plugin.DeviceControllerInterface/1.0")
 # -> extract whole string within quotation marks
 INTERFACE_VERSION=$(grep 'eu.atb.ptu.plugin.' ${INTERFACE_DEFINITION})
 # get string within quotes:

src/ATBAPP/ATBDeviceControllerPlugin.cpp

@@ -2,8 +2,13 @@
 #include "src/ATBAPP/ATBHealthEvent.h"
 #include "src/ATBAPP/ATBMachineEvent.h"
 #include "src/ATBAPP/Utils.h"
+#include "src/ATBAPP/support/JSON.h"
+#include "src/ATBAPP/support/DBusControllerInterface.h"
+#include "src/ATBAPP/support/PTUSystem.h"
+#include "src/ATBAPP/support/CashUtils.h"
 
 #include <QTimer>
+#include <QThread>
 #include <QTextCodec>
 #include <QDebug>
 
@@ -18,7 +23,8 @@
 
 
 ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent)
-    : pluginState(PLUGIN_STATE::NOT_INITIALIZED)
+    : isMaster(false)
+    , pluginState(PLUGIN_STATE::NOT_INITIALIZED)
     , eventReceiver(nullptr)
 {
     this->setParent(parent);
@@ -29,14 +35,18 @@ ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent)
         return;
     }
 
+    this->init_sc_dbus();
+
+
     //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_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_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_payStopByPushbutton()), this, SLOT(onCashPayStopByPushbutton()), Qt::QueuedConnection);
-    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByError()),   this, SLOT(onCashPayStopByError()),         Qt::QueuedConnection);
+    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByEscrow()),     this, SLOT(onCashPayStopByEscrow()),     Qt::QueuedConnection);
-    connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_payStopByTimeout()), this, SLOT(onCashPayStopByTimeout()),       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
@@ -45,12 +55,21 @@ ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent)
     connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorCBinAndAllDoorsClosed()), this, SLOT(onCBinAndAllDoorsClosed()), Qt::QueuedConnection);
     connect(dynamic_cast<QObject*>(hw), SIGNAL(hwapi_doorAllDoorsClosed()),        this, SLOT(onAllDoorsClosed()),    Qt::QueuedConnection);     // check for errors, switch to mode IDLE
 
+    // move hw object to separate thread:
+    auto hwThread = new QThread;
+    dynamic_cast<QObject*>(hw)->moveToThread(hwThread);
+    hwThread->start();
 
-    this->diag = new DeviceControllerDiag(this);
+    QString persistentDataFile = "/mnt/system_data/dc_persistentData.dat";
+    this->persistentData = new PersistentData(persistentDataFile);
 
+    this->diag = new DeviceControllerDiag(this->persistentData, this);
+    connect(this->diag, &DeviceControllerDiag::newVoltage, this, &ATBDeviceControllerPlugin::onNewVoltage);
 
     this->currentSelectedTicketType = 0;
     this->currentCashState = CASH_STATE::CACHE_EMPTY;
+
+    this->cashStartAmountInt = 0;
 }
 
 ATBDeviceControllerPlugin::~ATBDeviceControllerPlugin() {}
@@ -60,23 +79,48 @@ PLUGIN_STATE ATBDeviceControllerPlugin::initDCPlugin(QObject *eventReceiver, con
     this->eventReceiver = eventReceiver;
 
     // read variables from setting
-    this->serialPortName = settings.value("DEVICE_CONTROLLER/serialPort", "ttymxc2").toString();
+    this->serialPortName = settings.value("ATBDeviceControllerPlugin/serialPort", "ttymxc2").toString();
-    QByteArray printerEncoding = settings.value("DEVICE_CONTROLLER/printerEnconding", "ISO 8859-2").toString().toLatin1();
+    QByteArray printerEncoding = settings.value("ATBDeviceControllerPlugin/printerEncoding", "ISO 8859-2").toString().toLatin1();
+    QString printerLocaleString = settings.value("ATBDeviceControllerPlugin/printerLocale", "de_DE").toString().toLatin1();
+    this->printerLocale = QLocale(printerLocaleString);
 
-    // open serial port
+
-    hw->dc_openSerial(5, "115200", this->serialPortName, 1);
+    if (this->isMaster) {
+        // open serial port
+        hw->dc_openSerial(5, "115200", this->serialPortName, 1);
+    }
 
     hw->dc_autoRequest(true);
 
+    hw->dc_setNewCustomerNumber(PTUSystem::readCustomerNumber());
+    hw->dc_setNewMachineNumber(PTUSystem::readMachineNumber());
+    hw->dc_setNewZone(PTUSystem::readZoneNumber());
+    hw->dc_setNewBorough(PTUSystem::readGroupNumber());
+
     hw->rtc_setDateTime();
 
     // this is necessary to init the CashAgentLib (!)
     hw->vend_failed();
 
+    // read sw-version and store it in persistentData, if changed
+    QString dc_fw_version = hw->dc_getSWversion().remove(QChar('\0'));
+    qCritical() << "ATBDeviceControllerPlugin: DC firmware version: " << dc_fw_version;
+    this->persistentData->setDCFirmwareVersion(dc_fw_version);
+    this->persistentData->serializeToFile();
 
     // text encoding for printer
     this->codec = QTextCodec::codecForName(printerEncoding);
 
+    if (this->codec == nullptr) {
+        printerEncoding = "ISO 8859-1";
+        qCritical() << "ATBDeviceControllerPlugin: ERROR: printer encoding \"" << printerEncoding << "\" is not supported!";
+        qCritical() << "     ... use default encoding: " << printerEncoding;
+        this->codec = QTextCodec::codecForName(printerEncoding);
+    }
+    else {
+        qCritical() << "ATBDeviceControllerPlugin: Set printer encoding to " << printerEncoding;
+    }
+
     this->diag->init(this->hw, this->eventReceiver);
 
     this->pluginState = PLUGIN_STATE::INITIALIZED;
@@ -87,12 +131,19 @@ PLUGIN_STATE ATBDeviceControllerPlugin::initDCPlugin(QObject *eventReceiver, con
 
 void ATBDeviceControllerPlugin::startPhysicalLayer()
 {
+    if (!this->isMaster) return;
+
     if (this->pluginState == PLUGIN_STATE::NOT_INITIALIZED)
     {
         qCritical() << "ATBDeviceControllerPlugin::startPhysicalLayer(): plugin is not initialized";
         return;
     }
 
+    qCritical() << "ATBDeviceControllerPlugin::startPhysicalLayer() " << endl
+                << "     -> use master lib " << endl
+                << "     -> start physical layer";
+
+
     // open serial port
     hw->dc_openSerial(5, "115200", this->serialPortName, 1);
 
@@ -101,6 +152,12 @@ void ATBDeviceControllerPlugin::startPhysicalLayer()
 
 void ATBDeviceControllerPlugin::stopPhysicalLayer()
 {
+    // store persistent data
+    this->persistentData->serializeToFile();
+
+    // skip, if we use slave lib
+    if (!this->isMaster) return;
+
     if (this->pluginState == PLUGIN_STATE::NOT_INITIALIZED)
     {
         qCritical() << "ATBDeviceControllerPlugin::startPhysicalLayer(): plugin is not initialized";
@@ -113,7 +170,21 @@ void ATBDeviceControllerPlugin::stopPhysicalLayer()
 }
 
 
+void ATBDeviceControllerPlugin::reboot()
+{
+    // note:
+    // - dc reset lasts about ~5s !
+    // - makes a power cycle to certain components, e.g. card terminal
+    hw->bl_rebootDC();
+}
 
+void ATBDeviceControllerPlugin::reset()
+{
+    // note:
+    // - dc reset lasts about ~5s !
+    // - makes a power cycle to certain components, e.g. card terminal
+    hw->dc_OrderToReset();
+}
 
 
 
@@ -121,19 +192,22 @@ void ATBDeviceControllerPlugin::stopPhysicalLayer()
 
 void ATBDeviceControllerPlugin::onChangedProgramModeToSELL()
 {
-    //hw->dc_autoRequest(true);
+    hw->dc_autoRequest(true);
+    hw->rtc_setDateTime();
+    hw->mdb_switchWake(0);   // wakeup MDB components
 }
 
 void ATBDeviceControllerPlugin::onChangedProgramModeToSERVICE()
 {
-    //hw->dc_autoRequest(true);
+    hw->dc_autoRequest(true);
+    hw->mdb_switchWake(0);   // wakeup MDB components
 }
 
 void ATBDeviceControllerPlugin::onChangedProgramModeToIDLE()
 {
-    //hw->dc_autoRequest(false);  // <-- TODO: ???
+    hw->dc_autoRequest(true);
-
     this->diag->diagRequest();
+    hw->mdb_switchWake(1);
 
 }
 
@@ -148,11 +222,11 @@ void ATBDeviceControllerPlugin::requestStartCashInput(const QString & amount)
 {
     qCritical() << "Start Cash vending with amount = " << amount;
 
-    uint32_t amountInt = static_cast<uint32_t>(amount.toUInt());
+    this->cashStartAmountInt = static_cast<uint32_t>(amount.toUInt());
 
-    if (amountInt == 0) amountInt = UINT_MAX;
+    if (this->cashStartAmountInt == 0) this->cashStartAmountInt = UINT_MAX;
 
-    hw->cash_startPayment(amountInt);
+    hw->cash_startPayment(this->cashStartAmountInt);
 }
 
 void ATBDeviceControllerPlugin::requestStopCashInput()
@@ -166,7 +240,33 @@ void ATBDeviceControllerPlugin::requestStopCashInput()
 void ATBDeviceControllerPlugin::cashCollect()
 {
     hw->vend_success();
-    this->currentCashState = CASH_STATE::CACHE_EMPTY;
+
+    // inserted amount
+    uint32_t amountInt = this->hw->getInsertedAmount();
+    QString amountString = QString::number(amountInt);
+
+    // inserted coins
+    uint32_t amountCoinsInt = CashUtils::getAmountOfInsertedCoins(this->hw);
+    QString amountCoinsString = QString::number(amountCoinsInt);
+
+    // inserted notes
+    uint32_t amountNotesInt = CashUtils::getAmountOfInsertedNotes(this->hw);
+    QString amountNotesString = QString::number(amountNotesInt);
+
+
+    if (this->coinProcessor() == nsDeviceControllerInterface::COIN_PROCESSOR::CHANGER) {
+        QTimer::singleShot(1000, this, &ATBDeviceControllerPlugin::onCashChangerState);
+    }
+    else {
+        emit this->cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                                  amountString,
+                                  amountCoinsString,        // coins
+                                  amountNotesString,        // notes
+                                  0,                        // proposed change
+                                  "",
+                                  "");
+        this->currentCashState = CASH_STATE::CACHE_EMPTY;
+    }
 }
 
 void ATBDeviceControllerPlugin::cashAbort()
@@ -175,6 +275,19 @@ void ATBDeviceControllerPlugin::cashAbort()
     this->currentCashState = CASH_STATE::CACHE_EMPTY;
 }
 
+// Coin/Cash processing variants ----------------------------------------------
+
+nsDeviceControllerInterface::COIN_PROCESSOR ATBDeviceControllerPlugin::coinProcessor()
+{
+    return this->diag->coinProcessorType;
+}
+
+nsDeviceControllerInterface::BILL_ACCEPTOR  ATBDeviceControllerPlugin::billAcceptor()
+{
+    return this->diag->billAcceptor;
+}
+
+
 // TASKS: Account -------------------------------------------------------------
 
 // for an external account request, e.g. by an ui-button:
@@ -197,7 +310,7 @@ void ATBDeviceControllerPlugin::private_startAccount()
     qCritical() << "Start account: ";
     qCritical() << "                  nrOfVals = " << nrOfVals;
     for (int i=0; i<nrOfVals; ++i) {
-        qCritical() << "      backupedAccNumbers[" << i << "] = " << backupedAccNumbers[0];
+        qCritical() << "      backupedAccNumbers[" << i << "] = " << backupedAccNumbers[i];
     }
 
     qsort( backupedAccNumbers, nrOfVals, sizeof (uint16_t), Utils::compare );
@@ -254,7 +367,33 @@ void ATBDeviceControllerPlugin::private_getAccountData()
 
     accountData.insert("AccountingNumber", QString::number(retVR.AccountingNumber));
 
-    int numberOfCoinVariants = sizeof(retVR.coinsInVault);
+
+    // build dateTime: -------------------------------------------------------
+    // Example: "2023-07-19T18:24:01.063+02:00"
+    QString startDateTimeString;
+    QString formatString = "yyyy-MM-ddThh:mm:ss";
+    uint year = retVR.year + 2000;
+    startDateTimeString.append(QString::number(year)).append("-");
+    uint month = retVR.month;
+    startDateTimeString.append(QString::number(month).rightJustified(2, '0')).append("-");
+    uint day = retVR.dom;
+    startDateTimeString.append(QString::number(day).rightJustified(2, '0')).append("T");
+    uint hour = retVR.hour;
+    startDateTimeString.append(QString::number(hour).rightJustified(2, '0')).append(":");
+    uint minute = retVR.min;
+    startDateTimeString.append(QString::number(minute).rightJustified(2, '0')).append(":");
+    uint seconds = retVR.sec;
+    startDateTimeString.append(QString::number(seconds).rightJustified(2, '0'));
+
+    qCritical() << "     startDateTimeString = " << startDateTimeString;
+
+    QDateTime startDateTime = QDateTime::fromString(startDateTimeString, formatString);
+    accountData.insert("accountStartTime", startDateTime);
+    //-------------------------------------------------------------------------
+
+    // COINS in Vault: --------------------------------------------------------
+
+    int numberOfCoinVariants = sizeof(retVR.coinsInVault)/sizeof(retVR.coinsInVault[0]);
 
     // DEBUG
     qCritical() << "      NumberOfCoinVariants = " << numberOfCoinVariants;
@@ -264,14 +403,36 @@ void ATBDeviceControllerPlugin::private_getAccountData()
 
     accountData.insert("NumberOfCoinVariants", numberOfCoinVariants);
     for (int i = 0; i < numberOfCoinVariants; ++i) {
-        accountData.insert("COIN_" + QString::number(i) + "_Quantity",  retVR.coinsInVault[i]);
+        accountData.insert("COIN_" + QString::number(i+1) + "_Quantity",  retVR.coinsInVault[i]);
-        accountData.insert("COIN_" + QString::number(i) + "_Value",     retVR.coinDenomination[i]);
+        accountData.insert("COIN_" + QString::number(i+1) + "_Value",     retVR.coinDenomination[i]);
 
         // DEBUG
-        qCritical() << "COIN_" + QString::number(i) + "_Quantity = " << accountData["COIN_" + QString::number(i) + "_Quantity"];
+        qCritical() << "COIN_" + QString::number(i+1) + "_Quantity = " << accountData["COIN_" + QString::number(i) + "_Quantity"];
-        qCritical() << "COIN_" + QString::number(i) + "_Value    = " << accountData["COIN_" + QString::number(i) + "_Value"];
+        qCritical() << "COIN_" + QString::number(i+1) + "_Value    = " << accountData["COIN_" + QString::number(i) + "_Value"];
     }
 
+    // NOTES in stacker: --------------------------------------------------------
+
+    int numberOfBillVariants = sizeof(retVR.billsInStacker)/sizeof(retVR.billsInStacker[0]);
+
+    // DEBUG
+    qCritical() << "      numberOfBillVariants = " << numberOfBillVariants;
+
+    // limit numberOfBillVariants:
+    if (numberOfBillVariants > 16) { numberOfBillVariants = 16; }
+
+    accountData.insert("NumberOfBillVariants", numberOfBillVariants);
+    for (int i = 0; i < numberOfBillVariants; ++i) {
+        accountData.insert("NOTE_" + QString::number(i+1) + "_Quantity",  retVR.billsInStacker[i]);
+        accountData.insert("NOTE_" + QString::number(i+1) + "_Value",     retVR.billDenom[i]);
+
+        // DEBUG
+        qCritical() << "NOTE_" + QString::number(i+1) + "_Quantity = " << accountData["NOTE_" + QString::number(i+1) + "_Quantity"];
+        qCritical() << "NOTE_" + QString::number(i+1) + "_Value    = " << accountData["NOTE_" + QString::number(i+1) + "_Value"];
+    }
+
+
+
     emit requestAccountResponse(accountData);
 }
 
@@ -281,6 +442,9 @@ void ATBDeviceControllerPlugin::onServiceDoorOpened()
 {
     qCritical() << "ATBDeviceControllerPlugin::onServiceDoorOpened()";
 
+    // ... to detect alarm etc.
+    this->diag->diagRequest();
+
     // switch to mode service
     emit this->requestModeSERVICE();
 
@@ -290,47 +454,100 @@ void ATBDeviceControllerPlugin::onServiceDoorOpened()
 
 void ATBDeviceControllerPlugin::onVaultDoorOpened()
 {
-    // TODO:
-    // - show special screen / message on screen
-    // - create an HealthEvent (-> ISMAS-Event)
     qCritical() << "ATBDeviceControllerPlugin::onVaultDoorOpened()";
 
-    // TODO: Start background task "ACCOUNT"
+    // ... to detect alarm etc.
+    this->diag->diagRequest();
 
-    // do not: emit this->requestModeSERVICE();
+    // this is started here because we want to keep ptu awake in order to get
+    // coin box removed / inserted etc.
+    // BackgroundTask("ACCOUNT") is finished, if account message is sent to ISMAS!
+    this->dbus->startBackgroundTask("DOOR_OPEN");
+
+    emit this->requestModeACCOUNT();
+
+    // send service message, delayed:
+    QTimer::singleShot(1000, this, [this](){
+        emit this->showServiceText(nsDeviceControllerInterface::SERVICE_TEXT::VAULT_DOOR_OPENED, "Please remove coinbox");
+        hw->prn_cut(3);
+    } );
 }
 
 void ATBDeviceControllerPlugin::onCoinBoxRemoved()
 {
     qCritical() << "ATBDeviceControllerPlugin::onCoinBoxRemoved()";
 
-    this->private_startAccount();
+    // BackgroundTask("ACCOUNT") is finished, if account message is sent to ISMAS!
+    this->dbus->startBackgroundTask("ACCOUNT");
+
+    emit this->showServiceText(nsDeviceControllerInterface::SERVICE_TEXT::COIN_BOX_REMOVED, "Please insert coinbox");
+
+    QTimer::singleShot(4000, this, SLOT(private_startAccount()));
 }
 
 void ATBDeviceControllerPlugin::onCoinBoxInserted()
 {
     qCritical() << "ATBDeviceControllerPlugin::onCoinBoxInserted()";
+
+    emit this->showServiceText(nsDeviceControllerInterface::SERVICE_TEXT::COIN_BOX_INSERTED, "Please close vault door");
+    // emit this->showServiceText(0x1234);
 }
 
+/**
+ * This is called, when all CoinBox is inserted and all doors
+ * are closed.
+ */
 void ATBDeviceControllerPlugin::onCBinAndAllDoorsClosed()
 {
     qCritical() << "ATBDeviceControllerPlugin::onCBinAndAllDoorsClosed()";
 
-    this->diag->diagRequest();
-
-    // TODO: Stop background task "ACCOUNT"
-
     QTimer::singleShot(2000, this, SIGNAL(requestModeIDLE()));
+
+    this->dbus->finishedBackgroundTask("DOOR_OPEN");
 }
 
-
+/**
+ *  This is called, when all no coinbox is inserted and all doors are
+ *  closed.
+ */
 void ATBDeviceControllerPlugin::onAllDoorsClosed()
 {
     qCritical() << "ATBDeviceControllerPlugin::onAllDoorsClosed()";
 
     emit this->requestModeIDLE();
+    this->dbus->finishedBackgroundTask("DOOR_OPEN");
+
+    // TODO: check for errors and create a machine event
 }
 
+void ATBDeviceControllerPlugin::onNewVoltage(uint32_t voltage)
+{
+    qCritical() << "ATBDeviceControllerPlugin::onNewVoltage() = " << voltage;
+
+    QString voltageString = QString::number(voltage);
+
+    JSON::setPrettySerialize(true);
+    JSON::JsonObject json;
+
+    json = JSON::objectBuilder()
+                  ->set("Name", "batt")
+                  ->set("Value", voltageString)
+                  ->set("Unit", "V")
+            ->create();
+
+
+    ATBHealthEvent *healthEvent = new ATBHealthEvent(
+                ATB_HEALTH_MODE::STATE,
+                "VOLTAGE",
+                JSON::serialize(json)
+                );
+
+    QCoreApplication::postEvent(eventReceiver, healthEvent);
+}
+
+
+
+
 
 // TASKS: printing ------------------------------------------------------------
 
@@ -345,21 +562,26 @@ void ATBDeviceControllerPlugin::requestPrintTicket(nsDeviceControllerInterface::
     QDateTime parkingEndDateTime = QDateTime::fromString(printingData["parkingEnd"].toString(),  Qt::ISODate);
     QDateTime currentDateTime    = QDateTime::fromString(printingData["currentDateTime"].toString(), Qt::ISODate);
 
+    QString parkingEndDateString = this->printerLocale.toString(parkingEndDateTime.date(), QLocale::ShortFormat);
+    QString currentDateString    = this->printerLocale.toString(currentDateTime.date(),    QLocale::ShortFormat);
+
+
     // 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));
+    memcpy((char*)dynTicketData->vendingPrice,  ba_amount.data(), std::min(ba_amount.size(),8));  // Szeged
+    memcpy((char*)dynTicketData->dynDat6,       ba_amount.data(), std::min(ba_amount.size(),8));  // Schoenau
 
     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"));
+    QByteArray ba_parkingEndDate = codec->fromUnicode(parkingEndDateString);
     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"));
+    QByteArray ba_currentDate = codec->fromUnicode(currentDateString);
     memcpy((char*)dynTicketData->currentDate,  ba_currentDate.data(), std::min(ba_currentDate.size(),8));
 
     // STAN for Szeged Start/Stop: must be 9 digits
@@ -411,11 +633,13 @@ void ATBDeviceControllerPlugin::requestPrintTicket(nsDeviceControllerInterface::
     }
 
 
+    /*
     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)) {
@@ -446,6 +670,57 @@ void ATBDeviceControllerPlugin::requestPrintReceipt(const QHash<QString, QVarian
     qCritical() << "ATBDeviceControllerPlugin::requestPrintReceipt() is currently not implemented";
 }
 
+void ATBDeviceControllerPlugin::requestPrintReceipt(const QString & printingString)
+{
+    QByteArray ba = printingString.toUtf8();
+    hw->prn_switchPower(true);
+    hw->prn_setFonts(8,12,0,0);
+    hw->prn_sendText(&ba);
+    QTimer::singleShot(4000, this, SLOT(onPrinterWaitForPrintingReceipt()));
+
+    //QTimer::singleShot(2000, this, [this](){ hw->prn_cut(3);  } );
+}
+
+void ATBDeviceControllerPlugin::onPrinterWaitForPrintingReceipt()
+{
+    quint8 printerResult = this->hw->prn_getPrintResult();
+
+    switch (printerResult) {
+    case 0:    // still printing
+        qCritical() << "--> printer: WaitForPrintingReceipt";
+        QTimer::singleShot(2000, this, SLOT(onPrinterWaitForPrintingReceipt()));
+        break;
+    case 1:    // printing finished, Ok
+        qCritical() << "DC Finished printing receipt";
+        emit this->printReceiptFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                                        // TODO: TicketNumber
+                                        "",
+                                        "");
+        hw->prn_switchPower(true);
+        hw->prn_cut(3);
+        break;
+    case 2:    // printing finished, Error
+        qCritical() << "DC Error: wait for printing receipt";
+        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->printReceiptFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                                       this->errorCode,
+                                       this->errorDescription);
+        break;
+    default:
+        qCritical() << "DC Error: wait for printing receipt";
+        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->printReceiptFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                                       this->errorCode,
+                                       this->errorDescription);
+        break;
+    }
+
+}
+
 
 void ATBDeviceControllerPlugin::requestPrintTicket(const QHash<QString, QVariant> & printingData)
 {
@@ -461,6 +736,9 @@ void ATBDeviceControllerPlugin::requestPrintTicket(const QHash<QString, QVariant
     QDateTime parkingEndDateTime = QDateTime::fromString(printingData["parkingEnd"].toString(),  Qt::ISODate);
     QDateTime currentDateTime    = QDateTime::fromString(printingData["currentDateTime"].toString(), Qt::ISODate);
 
+    QString parkingEndDateString = this->printerLocale.toString(parkingEndDateTime.date(), QLocale::ShortFormat);
+    QString currentDateString    = this->printerLocale.toString(currentDateTime.date(),    QLocale::ShortFormat);
+
     /* -----------------------------------------------------------------------------------------
      * note: the following highly depends on printer template files!
      * -----------------------------------------------------------------------------------------
@@ -471,16 +749,18 @@ void ATBDeviceControllerPlugin::requestPrintTicket(const QHash<QString, QVariant
     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));
+    memcpy((char*)dynTicketData->vendingPrice,  ba_amount.data(), std::min(ba_amount.size(),8));  // Szeged
+    memcpy((char*)dynTicketData->dynDat6,       ba_amount.data(), std::min(ba_amount.size(),8));  // Schoenau
+
 
     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"));
+    QByteArray ba_parkingEndDate = codec->fromUnicode(parkingEndDateString);
     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"));
+    QByteArray ba_currentDate = codec->fromUnicode(currentDateString);
     memcpy((char*)dynTicketData->currentDate,  ba_currentDate.data(), std::min(ba_currentDate.size(),8));
 
 
@@ -497,12 +777,13 @@ void ATBDeviceControllerPlugin::requestPrintTicket(const QHash<QString, QVariant
     // 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)) {
@@ -571,21 +852,21 @@ void ATBDeviceControllerPlugin::onPrinterDataPrepared()
 
     // note: calling prn_getPrintResult() immediately may result in wrong answer!
     // We have to wait "about some seconds" until calling this function!
-    QTimer::singleShot(4000, this, SLOT(onPrinterWaitForPrinting()));
+    QTimer::singleShot(4000, this, SLOT(onPrinterWaitForPrintingTicket()));
 
     // old: use printer templates:
     // this->currentTemplate = 1;
     // this->onPrinterPrintNextTemplate();
 }
 
-void ATBDeviceControllerPlugin::onPrinterWaitForPrinting()
+void ATBDeviceControllerPlugin::onPrinterWaitForPrintingTicket()
 {
     quint8 printerResult = this->hw->prn_getPrintResult();
 
     switch (printerResult) {
     case 0:    // still printing
-        qCritical() << "--> printer: WaitForPrinting";
+        qCritical() << "--> printer: WaitForPrintingTicket";
-        QTimer::singleShot(2000, this, SLOT(onPrinterWaitForPrinting()));
+        QTimer::singleShot(2000, this, SLOT(onPrinterWaitForPrintingTicket()));
         break;
     case 1:    // printing finished, Ok
         this->onPrintFinishedOK();
@@ -622,9 +903,7 @@ void ATBDeviceControllerPlugin::onPrinterPrintNextTemplate()
 
     if (templateList.isEmpty()) {
         // all templates are printed
-
+        QTimer::singleShot(2000, this, SLOT(onPrinterWaitForPrintingTicket()));
-        // FAKE SIGNAL:
-        QTimer::singleShot(2000, this, SLOT(onPrintFinishedOK()));
     }
     else {
         // print next template
@@ -685,6 +964,15 @@ void ATBDeviceControllerPlugin::onCashGotCoin()
                               "");
 }
 
+void ATBDeviceControllerPlugin::onCashPayStopByPushbutton()
+{
+    // DEBUG
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStopByPushbutton()";
+
+    // we need new cash value in application...
+    QTimer::singleShot(500, this, SLOT(onCashPayStopedSuccess()));
+
+}
 
 void ATBDeviceControllerPlugin::onCashPayStopByMax()
 {
@@ -708,6 +996,9 @@ void ATBDeviceControllerPlugin::onCashPayStopByEscrow()
     emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
                               amountString,
                               "",
+                              "",
+                              "",
+                              "",
                               "");
 }
 
@@ -723,6 +1014,9 @@ void ATBDeviceControllerPlugin::onCashPayStopByError()
     emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
                               amountString,
                               "",
+                              "",
+                              "",
+                              "",
                               "");
 }
 
@@ -738,27 +1032,217 @@ void ATBDeviceControllerPlugin::onCashPayStopByTimeout()
     emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
                               amountString,
                               "",
+                              "",
+                              "",
+                              "",
                               "");
 }
 
 void ATBDeviceControllerPlugin::onCashPayStopedSuccess()
 {
     // DEBUG
-    qCritical() << "ATBDeviceControllerPlugin::onCashPayStoped()";
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStopedSuccess()";
 
+    // inserted amount
     uint32_t amountInt = this->hw->getInsertedAmount();
-
     QString amountString = QString::number(amountInt);
 
-    qCritical() << "      insertedAmount (int) = " << amountInt;
+    // inserted coins
-    qCritical() << "            insertedAmount = " << amountString;
+    uint32_t amountCoinsInt = CashUtils::getAmountOfInsertedCoins(this->hw);
+    QString amountCoinsString = QString::number(amountCoinsInt);
+
+    // inserted notes
+    uint32_t amountNotesInt = CashUtils::getAmountOfInsertedNotes(this->hw);
+    QString amountNotesString = QString::number(amountNotesInt);
+
+    // amount due to change
+    uint32_t amountDueToChangeInt;
+    if (amountInt > this->cashStartAmountInt) {
+        amountDueToChangeInt = amountInt - this->cashStartAmountInt;
+    }
+    else {
+        amountDueToChangeInt = 0;
+    }
+    QString amountDueToChangeString = QString::number(amountDueToChangeInt);
+
+
+    // DEBUG
+    qCritical() << "---------------------------------------------------------";
+    qCritical() << "ATBDeviceControllerPlugin::onCashPayStopedSuccess()";
+    qCritical() << "";
+    qCritical() << "                         amountInt: " << amountInt;
+    qCritical() << "                      amountString: " << amountString;
+    qCritical() << "";
+    qCritical() << "                    amountNotesInt: " << amountNotesInt;
+    qCritical() << "                 amountNotesString: " << amountNotesString;
+    qCritical() << "";
+    qCritical() << "                    amountCoinsInt: " << amountCoinsInt;
+    qCritical() << "                 amountCoinsString: " << amountCoinsString;
+    qCritical() << "";
+    qCritical() << "          this->cashStartAmountInt: " << this->cashStartAmountInt;
+    qCritical() << "              amountDueToChangeInt: " << amountDueToChangeInt;
+    qCritical() << "           amountDueToChangeString: " << amountDueToChangeString;
+    qCritical() << "---------------------------------------------------------";
+
 
     emit this->cashInputFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
                               amountString,
+                              amountCoinsString,        // coins
+                              amountNotesString,        // notes
+                              amountDueToChangeString,  // proposed change
                               "",
                               "");
 }
 
+void ATBDeviceControllerPlugin::onCashChangerState()
+{
+    uint32_t amountThatCouldNotBeChangedInt;
+
+    static int changerStateRequestCounter = 0;
+    static uint8_t lastChangerResult = 0;
+
+
+    // inserted amount
+    uint32_t amountInt = this->hw->getInsertedAmount();
+    QString amountString = QString::number(amountInt);
+
+    // inserted coins
+    uint32_t amountCoinsInt = CashUtils::getAmountOfInsertedCoins(this->hw);
+    QString amountCoinsString = QString::number(amountCoinsInt);
+
+    // inserted notes
+    uint32_t amountNotesInt = CashUtils::getAmountOfInsertedNotes(this->hw);
+    QString amountNotesString = QString::number(amountNotesInt);
+
+    // amount due to change
+    uint32_t amountCoinsChangedInt;
+    if (amountInt > this->cashStartAmountInt) {
+        amountCoinsChangedInt = amountInt - this->cashStartAmountInt;
+    }
+    else {
+        amountCoinsChangedInt = 0; 
+    }
+    QString amountCoinsChangedString = QString::number(amountCoinsChangedInt);
+
+    // if we do not need to give change:
+    if (amountCoinsChangedInt == 0) {
+        emit this->cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                                  amountString,
+                                  amountCoinsString,        // coins
+                                  amountNotesString,        // notes
+                                  amountCoinsChangedString, // change
+                                  "",
+                                  "");
+        changerStateRequestCounter = 0;
+        lastChangerResult = 0;
+        return;
+    }
+
+
+    // get changer state ------------------------------------------------
+    // Note: 'returnedAmount'-parameter is missleading here!
+    // 'returnedAmount' is the amount which could not be changed!
+
+    lastChangerResult = hw->changer_getChangeResult(&amountThatCouldNotBeChangedInt);
+
+    // DEBUG
+    qCritical() << "---------------------------------------------------------";
+    qCritical() << "ATBDeviceControllerPlugin::onCashChangerState()";
+    qCritical() << "        changerStateRequestCounter: " << changerStateRequestCounter;
+    qCritical() << "                 lastChangerResult: " << lastChangerResult;
+    qCritical() << "    amountThatCouldNotBeChangedInt: " << amountThatCouldNotBeChangedInt;
+    qCritical() << "";
+    qCritical() << "                         amountInt: " << amountInt;
+    qCritical() << "                      amountString: " << amountString;
+    qCritical() << "";
+    qCritical() << "                    amountCoinsInt: " << amountCoinsInt;
+    qCritical() << "                 amountCoinsString: " << amountCoinsString;
+    qCritical() << "";
+    qCritical() << "                    amountNotesInt: " << amountNotesInt;
+    qCritical() << "                 amountNotesString: " << amountNotesString;
+    qCritical() << "";
+    qCritical() << "          this->cashStartAmountInt: " << this->cashStartAmountInt;
+    qCritical() << "             amountCoinsChangedInt: " << amountCoinsChangedInt;
+    qCritical() << "          amountCoinsChangedString: " << amountCoinsChangedString;
+    qCritical() << "---------------------------------------------------------";
+
+    if (lastChangerResult == 1) { // change is returned
+
+
+        QString amountCoinsChangedString = QString::number(amountCoinsChangedInt);
+
+        emit this->cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE::SUCCESS,
+                                  amountString,
+                                  amountCoinsString,        // coins
+                                  amountNotesString,        // notes
+                                  amountCoinsChangedString, // change
+                                  "",
+                                  "");
+        changerStateRequestCounter = 0;
+        lastChangerResult = 0;
+        return;
+    }
+    else
+    if (lastChangerResult == 0) { // not yet started
+        qCritical() << "ATBDeviceControllerPlugin::onCashChangerState(): ERROR: change not yet started: amount due to return: " << amountCoinsChangedString;
+    }
+    else
+    if (lastChangerResult == 2) { // only partial return
+        qCritical() << "ATBDeviceControllerPlugin::onCashChangerState(): ERROR: only partial return: amount due to return: " << amountCoinsChangedString;
+    }
+    else
+    if (lastChangerResult == 3) { // no return possible
+        qCritical() << "ATBDeviceControllerPlugin::onCashChangerState(): ERROR: no return possible: amount due to return: " << amountCoinsChangedString;
+    }
+    else {
+        qCritical() << "ATBDeviceControllerPlugin::onCashChangerState(): ERROR: invalid changerState (" << lastChangerResult << ")";
+    }
+
+
+    // handle timeout ------------------------------------------------
+    if (changerStateRequestCounter > 15) {
+        QString errorCode;
+        QString errorDescription;
+        switch (lastChangerResult) {
+        case 0:  // not yet started
+            errorCode = "DC::CHANGER::START";
+            errorDescription = "Changer does not start";
+            break;
+        case 1:  // amount returned
+            // This error should not occur!
+            errorCode = "DC::CHANGER::INVALID";
+            errorDescription = "Changer returned amount";
+            break;
+        case 2:  // only partial return
+            errorCode = "DC::CHANGER::CHANGE";
+            errorDescription = "Changer does only partial return";
+            break;
+        case 3:  // no return possible
+            errorCode = "DC::CHANGER::CHANGE_NOT_POSSIBLE";
+            errorDescription = "Changing not possible";
+            break;
+        default:
+
+            break;
+        }
+        emit this->cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE::ERROR_BACKEND,
+                                  amountString,
+                                  amountCoinsString,
+                                  amountNotesString,
+                                  0,
+                                  errorCode,
+                                  errorDescription);
+        changerStateRequestCounter = 0;
+        lastChangerResult = 0;
+        return;
+    }
+
+    // restart changer check:
+    changerStateRequestCounter++;
+    QTimer::singleShot(1000, this, &ATBDeviceControllerPlugin::onCashChangerState);
+}
+
+
 
 
 /**
@@ -773,7 +1257,8 @@ bool ATBDeviceControllerPlugin::private_loadCashAgentLib(QString pluginName)
 
         // search list for plugin (.so) file:
         QStringList pluginNameList;
-        pluginNameList << "/usr/lib/libCAmaster.so"
+        pluginNameList << "/usr/lib/libCAslave.so"
+                       << "/usr/lib/libCAmaster.so"
                        << "/usr/lib/libCashAgentLib.so";
         // using C++11 range based loop:
         for (const auto& filename : pluginNameList) {
@@ -799,6 +1284,14 @@ bool ATBDeviceControllerPlugin::private_loadCashAgentLib(QString pluginName)
         return false;
     }
 
+    if (pluginName.contains("slave", Qt::CaseInsensitive)) {
+        this->isMaster = false;
+    }
+    else
+    if (pluginName.contains("master", Qt::CaseInsensitive)) {
+        this->isMaster = true;
+    }
+
     QPluginLoader* pluginLoader = new QPluginLoader();
     pluginLoader->setFileName(pluginName);
 
@@ -830,11 +1323,61 @@ bool ATBDeviceControllerPlugin::private_loadCashAgentLib(QString pluginName)
 
     qCritical() << "ATBDeviceControllerPlugin: loaded CashAgentLib";
 
+    if (this->isMaster) {
+        QTimer::singleShot(500, this, &ATBDeviceControllerPlugin::startPhysicalLayer);
+    }
+
     return true;
 }
 
 
 
+
+
+/***********************************************************************************************
+ *  dbus
+ */
+int ATBDeviceControllerPlugin::init_sc_dbus()
+{
+#if defined (ARCH_PTU4)
+    this->dbus = new DBusControllerInterface("eu.atb.ptu", "/systemcontrol", QDBusConnection::systemBus(), 0);
+#elif defined (ARCH_PTU5)
+    this->dbus = new DBusControllerInterface("eu.atb.ptu.systemcontrol", "/systemcontrol", QDBusConnection::systemBus(), 0);
+#else
+    this->dbus = new DBusControllerInterface("eu.atb.ptu", "/systemcontrol", QDBusConnection::sessionBus(), 0);
+#endif
+    if (!dbus->isValid()) {
+        QString errorString = QDBusError::errorString(dbus->lastError().type());
+        qCritical() << errorString;
+
+        if (dbus->lastError().isValid()){
+            qCritical() << "last error is valid.";
+        }
+
+        qCritical() << "message: " << dbus->lastError().message();
+        qCritical() << "SystemController is not valid.";
+        return 0;
+    }
+
+    if (!dbus->connection().isConnected()) {
+        qCritical() << "SystemController is not connected.";
+        return 0;
+    }
+
+    connect(this->dbus, SIGNAL(wokeUpFrom(uchar)), this, SLOT(onWokeUp(uchar)));
+
+    return 1;
+}
+
+void ATBDeviceControllerPlugin::onWokeUp(uchar source)
+{
+    if (source == 0x01) {
+        // woke up from device controller
+        this->diag->diagRequest();
+    }
+}
+
+
 /************************************************************************************************
  * Mandatory plugin methods
  *

src/ATBAPP/ATBDeviceControllerPlugin.h

@@ -2,6 +2,7 @@
 #define ATBDEVICECONTROLLERPLUGIN_H
 
 #include <QObject>
+#include <QLocale>
 
 #include "src/ATBAPP/DeviceControllerInterface.h"
 #include "src/ATBAPP/ATBAPPplugin.h"
@@ -9,13 +10,14 @@
 
 #include "version.h"
 
-
+#include "support/PersistentData.h"
 
 #include "interfaces.h"
 
 #include <unistd.h>
 
 
+class DBusControllerInterface;
 class QTextCodec;
 
 
@@ -47,10 +49,15 @@ public:
     void cashCollect();
     void cashAbort();
 
+    // read coin/cash processing variants -----------------------------------------
+    nsDeviceControllerInterface::COIN_PROCESSOR coinProcessor();
+    nsDeviceControllerInterface::BILL_ACCEPTOR  billAcceptor();
+
     // TASKS: printing ------------------------------------------------------------
     void requestPrintTicket(const QHash<QString, QVariant> & printingData);
     void requestPrintTicket(nsDeviceControllerInterface::TICKET_VARIANT ticketVariant, const QHash<QString, QVariant> & printingData);
     void requestPrintReceipt(const QHash<QString, QVariant> & printingData);
+    void requestPrintReceipt(const QString & printingString);
 
     // TASKS: Account -------------------------------------------------------------
     void requestAccount();
@@ -73,11 +80,13 @@ public slots:
 
     void startPhysicalLayer();
     void stopPhysicalLayer();
+    void reboot();
+    void reset();
 
 
 
 signals:
-
+    // public Signals are defined in interface
 
 
 private:
@@ -91,14 +100,22 @@ private:
 
    bool useDebug;
 
+   bool isMaster;
+
    PLUGIN_STATE pluginState;
 
    QObject* eventReceiver;
 
+   DBusControllerInterface* dbus;
+
    hwinf* hw;
 
    DeviceControllerDiag* diag;
 
+   PersistentData *persistentData;
+
+   uint32_t cashStartAmountInt;
+
 
    QTextCodec *codec;
 
@@ -111,6 +128,10 @@ private:
    // counts failed hw->log_chkIfVaultRecordAvailable()
    int accountCheckCounter;
 
+   // dbus
+   int init_sc_dbus();
+
+   QLocale printerLocale;
 
 private slots:
    // printer
@@ -118,7 +139,8 @@ private slots:
    void onPrinterDataPrepared();
    void onPrinterDataPreparedForTemplates();
    void onPrinterPrintNextTemplate();
-   void onPrinterWaitForPrinting();
+   void onPrinterWaitForPrintingTicket();
+   void onPrinterWaitForPrintingReceipt();
 
    void onPrintFinishedOK();
    void onPrintFinishedERR();
@@ -127,9 +149,11 @@ private slots:
    void onCashGotCoin();
    void onCashPayStopedSuccess();
    void onCashPayStopByMax();
+   void onCashPayStopByPushbutton();
    void onCashPayStopByEscrow();
    void onCashPayStopByError();
    void onCashPayStopByTimeout();
+   void onCashChangerState();
 
    // doors and hardware contacts
    void onServiceDoorOpened();
@@ -143,6 +167,11 @@ private slots:
    void private_startAccount();
    void private_checkAccountData();
    void private_getAccountData();
+
+   // measurement values
+   void onNewVoltage(uint32_t voltage);
+
+   void onWokeUp(uchar source);
 };
 
 #endif // ATBDEVICECONTROLLERPLUGIN_H

src/ATBAPP/ATBMachineEvent.cpp

@@ -56,6 +56,9 @@ QString ATBMachineEvent::getEventClassString(EVENT_CLASS eventClass)
     case EVENT_CLASS::STATE:
         return "STATE";
         break;
+    case EVENT_CLASS::OPERATE:
+        return "OPERATE";
+        break;
     case EVENT_CLASS::NOT_DEFINED:
         return "NOT_DEFINED";
         break;

src/ATBAPP/ATBMachineEvent.h

@@ -41,6 +41,7 @@ enum class EVENT_CLASS : quint8 {
     ALARM,
     DEBUG,
     STATE,
+    OPERATE,
     NOT_DEFINED
 };
 

src/ATBAPP/DeviceControllerDiag.cpp

@@ -1,14 +1,18 @@
 #include "DeviceControllerDiag.h"
 
 #include <QCoreApplication>
+#include <QMetaEnum>
 #include <QUuid>
 #include <QDebug>
 
-DeviceControllerDiag::DeviceControllerDiag(QObject *parent)
+DeviceControllerDiag::DeviceControllerDiag(PersistentData *pData, QObject *parent)
     : QObject(parent)
+    , coinProcessorType(nsDeviceControllerInterface::COIN_PROCESSOR::ESCROW)
+    , billAcceptor(nsDeviceControllerInterface::BILL_ACCEPTOR::NO)
     , eventReceiver(nullptr)
     , isRequestRunning(false)
     , flagInterruptDiag(false)
+    , pData(pData)
 {
     diagRequestTimeoutTimer = new QTimer(this);
     diagRequestTimeoutTimer->setInterval(1000*20);  // 20s
@@ -39,6 +43,16 @@ void DeviceControllerDiag::diagRequest()
     this->diagRequestTimeoutTimer->start();
 
     this->private_startDiag();
+
+    // read dc-fw-version:
+    /* note: dc_getSWVersion() returns always 32 characters (QString)...
+     * if no version string could be read it will contain 32 null-characters:
+     * "\u0000\u0000..."
+     */
+    QString dc_fw_version = hw->dc_getSWversion().remove(QChar('\0'));
+    qCritical() << "ATBDeviceControllerPlugin: DC firmware version: " << dc_fw_version;
+    this->pData->setDCFirmwareVersion(dc_fw_version);
+    this->pData->serializeToFile();
 }
 
 
@@ -53,7 +67,9 @@ void DeviceControllerDiag::private_startDiag()
     // check for DiagRequestTimeoutTimerTimeout:
     if (this->flagInterruptDiag) {
         qCritical() << "DeviceControllerDiag::private_startDiag() interrupted!";
-        this->private_finishedDiag(0xff);
+        this->private_sendDiagEvent(DeviceController::State::E255);
+        this->isRequestRunning  = false;
+        this->flagInterruptDiag = false;
         return;
     }
 
@@ -85,7 +101,9 @@ void DeviceControllerDiag::sys_superviseSystem()
     // check for DiagRequestTimeoutTimerTimeout:
     if (this->flagInterruptDiag) {
         qCritical() << "DeviceControllerDiag::sys_superviseSystem() interrupted!";
-        this->private_finishedDiag(0xff);
+        this->private_sendDiagEvent(DeviceController::State::E255);
+        this->flagInterruptDiag = false;
+        this->isRequestRunning  = false;
         return;
     }
 
@@ -93,7 +111,9 @@ void DeviceControllerDiag::sys_superviseSystem()
     {
         // es gibt keinerlei gültige Daten vom DC
         qCritical() << "DeviceControllerDiag::sys_superviseSystem() no valid data!";
-        this->private_finishedDiag(0xfe);
+        this->private_sendDiagEvent(DeviceController::State::E254);
+        this->diagRequestTimeoutTimer->stop();
+        this->isRequestRunning  = false;
         return;
     }
 
@@ -120,37 +140,24 @@ void DeviceControllerDiag::sys_superviseSystem()
     if (dynMaCond.lowerDoor || dynMaCond.upperDoor) {
         // Service or battery door is open, goto INTRUSION MODE
         qCritical() << "DeviceControllerDiag::sys_superviseSystem() Service or battery door is open, goto INTRUSION MODE";
-        this->private_finishedDiag(0xFD);
+        this->private_sendDiagEvent(DeviceController::State::E253);
-        return;
     }
     if (dynMaCond.middleDoor) {
         // vault door is open, goto INTRUSION MODE
         qCritical() << "DeviceControllerDiag::sys_superviseSystem() vault door is open, goto INTRUSION MODE";
-        this->private_finishedDiag(0xFC);
+        this->private_sendDiagEvent(DeviceController::State::E252);
-        return;
     }
 
     qCritical() << "      --> call  sub_componentAssessment()";
 
-    uint8_t proposedError = sub_componentAssessment();
+    sub_componentAssessment();
-    if (proposedError) {
-        // All doors are closed but errors found, goto OOO MODE (out-of-order)
-        qCritical() << "DeviceControllerDiag::sys_superviseSystem() All doors are closed but errors found, goto OOO MODE (out-of-order)";
-        this->private_finishedDiag(proposedError);
-        return;
-    }
-
-    // everything fine
-    qCritical() << "DeviceControllerDiag::sys_superviseSystem() everything fine";
-    this->private_finishedDiag(0x00);
 }
 
 
 
-uint8_t DeviceControllerDiag::sub_componentAssessment()
+void DeviceControllerDiag::sub_componentAssessment()
 {
-    // this function decides if vending mode is possible, independant from door
+    bool flag_sendOperate = true;
-    // return >0 in case of error
 
     struct T_moduleCondition modCond;
     hw->sys_getDeviceConditions(&modCond);
@@ -161,111 +168,199 @@ uint8_t DeviceControllerDiag::sub_componentAssessment()
     struct T_devices devPara;
     hw->sys_restoreDeviceParameter(&devPara);
 
-    if (modCond.rtc>=200)
+    // store some interesting results:
-        return 1;
+    // -> voltage:
-    if (modCond.printer==200 || modCond.printer==201)   // 200: not connected  201: printer-HW-error  202: no paper
+    uint32_t voltage = hw->dc_getVoltage();
-        return 2;
+    emit newVoltage(voltage);
-    if (modCond.printer==202)
-        return 3;
 
-    if (modCond.coinBlocker>=200)
+
-        return 4;
+    // check for alarm:
-    if (modCond.mdbBus>=200)
+
-        return 5;
+    if (dynMaCond.onAlarm>0) {
-    if (modCond.intEe>=200)
+        flag_sendOperate = false;
-        return 6;
+        this->private_sendDiagEvent(DeviceController::State::A000);
+    }
+
+    // check for invalid states:
+
+    if (modCond.rtc>=200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E002);
+    }
+    if (modCond.printer==200 || modCond.printer==201) {   // 200: not connected  201: printer-HW-error  202: no paper
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E020);
+    }
+    if (modCond.printer==202) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E018);
+    }
+
+    if (modCond.coinBlocker>=200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E025);
+    }
+    if (modCond.mdbBus>=200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E034);
+    }
+    if (modCond.intEe>=200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E011);
+    }
+
+    // 2023-07-26: workaround for 00281/Szeged --------------------------------------------------------------
+    // because we need certain errors and we do get for 'kindOfCoinChecker' -> 16 !
+    qCritical() << "-----------diag: kindOfCoinChecker = " << devPara.kindOfCoinChecker;
+    qCritical() << "                  modCond.coinSafe = " << modCond.coinSafe;
+    if (devPara.kindOfCoinChecker > 0) {
+        if (modCond.coinSafe==201) { // full
+            flag_sendOperate = false;
+            this->private_sendDiagEvent(DeviceController::State::E007);
+        }
+        if (modCond.coinSafe==200)  {         // 200: kasse fehlt 201: voll  100:fast voll  1:ok
+            flag_sendOperate = false;
+            this->private_sendDiagEvent(DeviceController::State::E009);
+        }
+        if (modCond.coinEscrow>=200) {
+            flag_sendOperate = false;
+            this->private_sendDiagEvent(DeviceController::State::E010);
+        }
+    }
+    // -----------------------------------------------------------------------------------------------
+
+    switch (devPara.kindOfCoinChecker) {
+        case 1:
+        case 2:
+            this->coinProcessorType = nsDeviceControllerInterface::COIN_PROCESSOR::ESCROW;
+            break;
+        case 3:
+            this->coinProcessorType = nsDeviceControllerInterface::COIN_PROCESSOR::CHANGER;
+            break;
+    }
 
     if (devPara.kindOfCoinChecker==1 || devPara.kindOfCoinChecker==2)  // 0: without  1=EMP820   2=EMP900    3=currenza c²	(MW)
     {
-        if (modCond.coinChecker>=200 || modCond.coinEscrow>=200)
+        if (modCond.coinEscrow>=200) {
-        {
+            flag_sendOperate = false;
-            // Fehler Münzver.
+            this->private_sendDiagEvent(DeviceController::State::E010);
-            return 7;
         }
-        if (modCond.coinSafe>200)           // 200: kasse fehlt 201: voll  100:fast voll  1:ok
+        if (modCond.coinSafe==201)  { // full
-        {
+            flag_sendOperate = false;
-            return 8;
+            this->private_sendDiagEvent(DeviceController::State::E007);
+        }
+        if (modCond.coinSafe==200) {          // 200: kasse fehlt 201: voll  100:fast voll  1:ok
+            flag_sendOperate = false;
+            this->private_sendDiagEvent(DeviceController::State::E009);
         }
     } else
     if (devPara.kindOfCoinChecker==3)
     {
-        if (modCond.changer>=200)
+        if (modCond.changer>=200) {
-        {
             // Fehler Münzver.
-            return 7;
+            flag_sendOperate = false;
+            this->private_sendDiagEvent(DeviceController::State::E026);
         }
-        if (modCond.coinSafe>200)           // 200: kasse fehlt 201: voll  100:fast voll  1:ok
+        if (modCond.coinSafe==201) { // full
-        {
+            flag_sendOperate = false;
-            return 8;
+            this->private_sendDiagEvent(DeviceController::State::E007);
+        }
+        if (modCond.coinSafe == 200)  {          // 200: kasse fehlt 201: voll  100:fast voll  1:ok
+            flag_sendOperate = false;
+            this->private_sendDiagEvent(DeviceController::State::E009);
         }
     }
 
+    switch (devPara.BillAcceptor) {
+        case 0:
+            this->billAcceptor = nsDeviceControllerInterface::BILL_ACCEPTOR::NO;
+            break;
+        default:
+            this->billAcceptor = nsDeviceControllerInterface::BILL_ACCEPTOR::YES;
+            break;
+    }
+
+    /*
     if ( modCond.billReader>=200 && devPara.BillAcceptor>0)
     {
-        // Fehler BNA
+        if (modCond.billReader == 200)           // 200: kasse fehlt 201: voll  100:fast voll  1:ok
-        return 9;
+        {
+            return TODO;
+        }
+        if (modCond.billReader == 201)           // 200: kasse fehlt 201: voll  100:fast voll  1:ok
+        {
+            return TODO;
+        }
+    }
+    */
+
+    if (dynMaCond.modeAbrech>0) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E011);
     }
 
-    if (dynMaCond.onAlarm>0)
+    if (dynMaCond.nowCardTest>0) {
-        return 10;
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E072);
+    }
 
-    if (dynMaCond.modeAbrech>0)
+    if (dynMaCond.startupTestIsRunning>0) {
-        return 11;
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E073);
+    }
 
-    if (dynMaCond.nowCardTest>0)
+    if (modCond.voltage>=200) {
-        return 12;
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E003);
+    }
+    if (modCond.temper>=200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::E004);
+    }
 
-    if (dynMaCond.startupTestIsRunning>0)
+    // check for warnings
-        return 13;
+    if (modCond.printer>=100 && modCond.printer<200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::W001);
+    }
+    if (modCond.coinSafe>=100 && modCond.coinSafe<200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::W002);
+    }
+    if (modCond.voltage>=100 && modCond.voltage<200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::W003);
+    }
+    if (modCond.temper>=100 && modCond.temper<200) {
+        flag_sendOperate = false;
+        this->private_sendDiagEvent(DeviceController::State::W004);
+    }
 
-    if (modCond.voltage>=200)
+    if (flag_sendOperate) {
-        return 14;
+        this->private_sendDiagEvent(DeviceController::State::O000);
-    if (modCond.temper>=200)
+    }
-        return 15;
 
-    return 0;
+
+    // finish diag
+
+    this->diagRequestTimeoutTimer->stop();
+    this->isRequestRunning  = false;
+    this->flagInterruptDiag = false;
 }
 
 
-uint8_t DeviceControllerDiag::sys_getSystemErrors()
-{
-    // 0: everything fine  1..15: errors
-    /*  1: real time clock error
-        2: printer error
-        3: no paper
-        4: coin blocker
-        5: mdb error
-        6: mem error int.ee.
-        7: error coin validator
-        8: coin safe missed or full
-        9: bill acceptor error
-        10: alarm / intrusion
-        11: cash box change is ongoing
-        12: card test running
-        13: startup-test is running
-        14: voltage error
-        15: temperature error
-    */
-    return this->sub_componentAssessment();
-}
-
 /**
- * @brief DeviceControllerDiag::private_finishedDiag
+ * @brief DeviceControllerDiag::private_sendDiagEvent
  * @param result - result value from 'sub_componentAssessment()',
+ *               - 0x00 everything is fine
  *               - 0xFF on timer interrupt
  *               - 0xFE no valid data from DeviceController
  *               - 0xFD Service or battery door is open
  *               - 0xFE vault door is open
  */
-void DeviceControllerDiag::private_finishedDiag(uint8_t result)
+void DeviceControllerDiag::private_sendDiagEvent(DeviceController::State result)
 {
-    this->diagRequestTimeoutTimer->stop();
+    qCritical() << "DeviceControllerDiag::private_sendDiagEvent() result: " << result;
-    this->isRequestRunning  = false;
-    this->flagInterruptDiag = false;
-
-    if (result == 0) return;
-
-    qCritical() << "DeviceControllerDiag::private_finishedDiag() result: " << result;
 
 
     if (this->eventReceiver == nullptr) {
@@ -273,95 +368,134 @@ void DeviceControllerDiag::private_finishedDiag(uint8_t result)
         return;
     }
 
-    if (result > 15 && result != 0xFE) return;
+    if (machineEventSet.contains(result)) {
+        // do not send already sent events
+        qCritical() << "       ... is in machineEventList";
+        return;
+    }
+    else {
+        machineEventSet.insert(result);
+    }
 
 
-    // Errors are in this range 1...15:
     QString eventId = QUuid::createUuid().toString(QUuid::WithoutBraces).mid(0, 8);
-    QString eventName;
+
+    QString eventName = QMetaEnum::fromType<DeviceController::State>().valueToKey(result);;
     EVENT_CLASS eventClass = EVENT_CLASS::STATE;
     QString parameter;
     switch (result) {
-    case 1:    // real time clock error
+
-        eventName  = "E001";
+    case DeviceController::State::A000:   // alarm / intrusion
+        eventClass = EVENT_CLASS::ALARM;
+        parameter  = "alarm / intrusion";
+        break;
+    case DeviceController::State::E002:    // real time clock error
         eventClass = EVENT_CLASS::ERROR;
         parameter  = "real time clock error";
         break;
-    case 2:    // printer error
+    case DeviceController::State::E003:   // voltage error
-        eventName  = "E002";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "printer error";
-        break;
-    case 3:    // no paper
-        eventName  = "E003";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "no paper";
-        break;
-    case 4:    // coin blocker
-        eventName  = "E004";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "coin blocker";
-        break;
-    case 5:    // mdb error
-        eventName  = "E005";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "mdb error";
-        break;
-    case 6:    // mem error int.ee.
-        eventName  = "E006";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "mem error int.ee.";
-        break;
-    case 7:    // error coin validator
-        eventName  = "E007";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "error coin validator";
-        break;
-    case 8:    // coin safe missed or full
-        eventName  = "E008";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "coin safe missed or full";
-        break;
-    case 9:    // bill acceptor error
-        eventName  = "E009";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "bill acceptor error";
-        break;
-    case 10:   // alarm / intrusion
-        eventName  = "E010";
-        eventClass = EVENT_CLASS::ERROR;
-        parameter  = "alarm / intrusion";
-        break;
-    case 11:   // cash box change is ongoing
-        eventName  = "E011";
-        eventClass = EVENT_CLASS::STATE;
-        parameter  = "cash box change is ongoing";
-        break;
-    case 12:   // card test running
-        eventName  = "E012";
-        eventClass = EVENT_CLASS::STATE;
-        parameter  = "card test running";
-        break;
-    case 13:   // startup-test is running
-        eventName  = "E013";
-        eventClass = EVENT_CLASS::STATE;
-        parameter  = "startup-test is running";
-        break;
-    case 14:   // voltage error
-        eventName  = "E014";
         eventClass = EVENT_CLASS::ERROR;
         parameter  = "voltage error";
         break;
-    case 15:   // temperature error
+    case DeviceController::State::E004:   // temperature error
-        eventName  = "E015";
+        eventClass = EVENT_CLASS::ERROR;
-        eventClass = EVENT_CLASS::STATE;
         parameter  = "temperature error";
         break;
-    case 0xFE:   // no valid data from DeviceController
+    case DeviceController::State::E007:    // coin safe full
-        eventName  = "E254";
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "coin safe full";
+        break;
+    case DeviceController::State::E008:    // bill acceptor full
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "bill acceptor full";
+        break;
+    case DeviceController::State::E009:    // no cash box
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "no cash box";
+        break;
+    case DeviceController::State::E010:    // coin escrow
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "coin escrow";
+        break;
+    case DeviceController::State::E011:    // mem error int.ee.
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "mem error int.ee.";
+        break;
+    case DeviceController::State::E018:    // no paper
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "no paper";
+        break;
+    case DeviceController::State::E020:    // printer error
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "printer error";
+        break;
+    case DeviceController::State::E025:    // coin blocker
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "coin blocker";
+        break;
+    case DeviceController::State::E026:    // error coin validator
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "error coin validator";
+        break;
+    case DeviceController::State::E034:    // mdb error
+        eventClass = EVENT_CLASS::ERROR;
+        parameter  = "mdb error";
+        break;
+
+    case DeviceController::State::E071:   // cash box change is ongoing
+        eventClass = EVENT_CLASS::STATE;
+        parameter  = "cash box change is ongoing";
+        break;
+    case DeviceController::State::E072:   // card test running
+        eventClass = EVENT_CLASS::STATE;
+        parameter  = "card test running";
+        break;
+    case DeviceController::State::E073:   // startup-test is running
+        eventClass = EVENT_CLASS::STATE;
+        parameter  = "startup-test is running";
+        break;
+
+    case DeviceController::State::E252:   // cash box door open
+        eventClass = EVENT_CLASS::STATE;
+        parameter  = "cash box door open";
+        break;
+    case DeviceController::State::E253:   // service or battery door open
+        eventClass = EVENT_CLASS::STATE;
+        parameter  = "service or battery door open";
+        break;
+    case DeviceController::State::E254:   // no valid data from DeviceController
         eventClass = EVENT_CLASS::STATE;
         parameter  = "no valid data from DeviceController";
         break;
+    case DeviceController::State::E255:   // no valid data from DeviceController
+        eventClass = EVENT_CLASS::STATE;
+        parameter  = "";
+        qCritical() << "                ... ignore " << QMetaEnum::fromType<DeviceController::State>().valueToKey(result);
+        return;
+        break;
+    case DeviceController::State::O000:   // everything is fine
+        this->machineEventSet.clear();
+        eventClass = EVENT_CLASS::OPERATE;
+        parameter  = "";
+        qCritical() << "                ... everything fine";
+        break;
+
+    case DeviceController::State::W001:   // paper low
+        eventClass = EVENT_CLASS::WARNING;
+        parameter  = "paper low";
+        break;
+    case DeviceController::State::W002:   // cashbox almost full
+        eventClass = EVENT_CLASS::WARNING;
+        parameter  = "cashbox almost full";
+        break;
+    case DeviceController::State::W003:   // voltage low
+        eventClass = EVENT_CLASS::WARNING;
+        parameter  = "voltage low";
+        break;
+    case DeviceController::State::W004:   // temperatur warning
+        eventClass = EVENT_CLASS::WARNING;
+        parameter  = "temperatur warning";
+        break;
     }
 
 
@@ -380,3 +514,5 @@ void DeviceControllerDiag::private_finishedDiag(uint8_t result)
     QCoreApplication::postEvent(eventReceiver, machineEvent);
 
 }
+
+

src/ATBAPP/DeviceControllerDiag.h

@@ -2,26 +2,80 @@
 #define DEVICECONTROLLERDIAG_H
 
 #include <QObject>
+#include <QSet>
 #include <QTimer>
 
 #include "ATBMachineEvent.h"
 #include "interfaces.h"
+#include "DeviceControllerInterface.h"
+
+#include "support/PersistentData.h"
+
+
+namespace DeviceController {
+    Q_NAMESPACE
+
+    enum State {
+        O000,
+
+        A000,
+
+        E002,
+        E003,
+        E004,
+
+        E007,
+        E008,
+        E009,
+        E010,
+        E011,
+
+        E018,
+
+        E020,
+
+        E025,
+        E026,
+
+        E034,
+
+        E071,
+        E072,
+        E073,
+
+        E252,
+        E253,
+        E254,
+        E255,
+
+        W001,
+        W002,
+        W003,
+        W004
+    };
+    Q_ENUM_NS(State)
+}
+
 
 class DeviceControllerDiag : public QObject
 {
     Q_OBJECT
 
 public:
-    DeviceControllerDiag(QObject *parent = nullptr);
+    DeviceControllerDiag(PersistentData *pData, QObject *parent = nullptr);
 
     void init(hwinf* hw, QObject* eventReceiver);
 
+    nsDeviceControllerInterface::COIN_PROCESSOR coinProcessorType;
+    nsDeviceControllerInterface::BILL_ACCEPTOR  billAcceptor;
+
 public slots:
     void diagRequest();
 
 signals:
     void diagResponse(ATBMachineEvent* machineEvent);
 
+    void newVoltage(uint32_t voltage);
 
 private:
     QObject *eventReceiver;
@@ -32,14 +86,19 @@ private:
 
     QTimer *diagRequestTimeoutTimer;
 
-    uint8_t sub_componentAssessment();
+    void sub_componentAssessment(); // diag exit method
-    uint8_t sys_getSystemErrors();
+
+    int lastVoltage;
+
+    QSet<DeviceController::State> machineEventSet;
+
+    PersistentData* pData;
 
 private slots:
     void onDiagRequestTimeoutTimerTimeout();
 
-    void private_startDiag();                   // diag entry method
+    void private_startDiag();                                    // diag entry method
-    void private_finishedDiag(uint8_t result);  // diag exit method
+    void private_sendDiagEvent(DeviceController::State result);
 
     void sys_superviseSystem();
 

src/ATBAPP/DeviceControllerInterface.h

@@ -13,6 +13,11 @@ namespace nsDeviceControllerInterface {
     enum class RESULT_STATE : quint8;
     enum class CASH_STATE   : quint8;
     enum class TICKET_VARIANT : quint8;
+    enum class COIN_PROCESSOR : quint8;
+    enum class BILL_ACCEPTOR  : quint8;
+
+
+    enum class SERVICE_TEXT  : quint16;
 }
 
 
@@ -62,7 +67,11 @@ public:
     virtual void requestPrintTicket(const QHash<QString, QVariant> & printingData) = 0;
     virtual void requestPrintTicket(nsDeviceControllerInterface::TICKET_VARIANT ticketVariant, const QHash<QString, QVariant> & printingData) = 0;
     virtual void requestPrintReceipt(const QHash<QString, QVariant> & printingData) = 0;
+    virtual void requestPrintReceipt(const QString & printingString) = 0;
 
+    // read coin/cash processing variants
+    virtual nsDeviceControllerInterface::COIN_PROCESSOR coinProcessor() = 0;
+    virtual nsDeviceControllerInterface::BILL_ACCEPTOR  billAcceptor() = 0;
 
     // mandantory ATBAPP plugin methods:
     virtual nsDeviceControllerInterface::PLUGIN_STATE getState() = 0;
@@ -83,12 +92,17 @@ public slots:
 
     virtual void startPhysicalLayer() = 0;
     virtual void stopPhysicalLayer() = 0;
+    virtual void reboot() = 0;
+    virtual void reset() = 0;
 
 
 signals:
     void printTicketFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
                                      const QString & errorCode,
                                      const QString & errorDescription);
+    void printReceiptFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & errorCode,
+                                     const QString & errorDescription);
 
     /**
      * emitted on e.g. a coin input
@@ -108,16 +122,38 @@ signals:
      */
     void cashInputFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
                                      const QString & newCashValue,
-                                     /*  additional variables? */
+                                     const QString & coinValue,
+                                     const QString & noteValue,
+                                     const QString & changeValue,
                                      const QString & errorCode,
                                      const QString & errorDescription);
 
+    /**
+     * emitted if cashPayment has been finished, e.g. in result to task cashCollect():
+     *  -> ticket should be printed sucessfully
+     *  -> coins in excrow or changer are given back to user
+     * Provides data for logging, especially changed value
+     */
+    void cashPaymentFinished(nsDeviceControllerInterface::RESULT_STATE resultState,
+                                     const QString & newCashValue,  // total inserted amount amount
+                                     const QString & coinValue,     // inserted amount, paid with coins
+                                     const QString & noteValue,     // inserted amount, paid with notes
+                                     const QString & changeValue,   // amount changed by changer/escrow
+                                     const QString & errorCode,
+                                     const QString & errorDescription);
+
+
 
     /**
      * emitted e.g. if service door is opened
      */
     void requestModeSERVICE();
 
+    /**
+     * emitted e.g. if vault door is opened
+     */
+    void requestModeACCOUNT();
+
     /**
      * emitted e.g. if doors are closed
      */
@@ -133,6 +169,13 @@ signals:
      */
     void requestAccountResponse(const QHash<QString, QVariant> & accountData);
 
+
+    /**
+     * show text messages in service mode
+     */
+    void showServiceText(nsDeviceControllerInterface::SERVICE_TEXT serviceText, const QString & text);
+
+
     /**
      * emitted on error
      * depending on errorCode:
@@ -150,7 +193,7 @@ signals:
 
 
 Q_DECLARE_INTERFACE(DeviceControllerInterface,
-                    "eu.atb.ptu.plugin.DeviceControllerInterface/1.0")
+                    "eu.atb.ptu.plugin.DeviceControllerInterface/1.1.1")
 
 
 namespace nsDeviceControllerInterface {
@@ -185,6 +228,23 @@ namespace nsDeviceControllerInterface {
         STOP_RECEIPT,    // e.g. Szeged Stop
     };
 
+    enum class COIN_PROCESSOR : quint8 {
+        CHANGER,
+        ESCROW
+    };
+
+    enum class BILL_ACCEPTOR  : quint8 {
+        YES,
+        NO
+    };
+
+    enum class SERVICE_TEXT  : quint16 {
+        SERVICE_DOOR_OPENED,
+        VAULT_DOOR_OPENED,
+        COIN_BOX_REMOVED,
+        COIN_BOX_INSERTED
+        /* t.b.d. */
+    };
 }
 
 #endif // DEVICECONTROLLERINTERFACE_H

src/ATBAPP/Utils.cpp

@@ -9,8 +9,8 @@ Utils::Utils(QObject *parent) : QObject(parent)
 
 int Utils::compare(const void* a, const void* b)
 {
-    int int_a = * ( (int*) a );
+    uint16_t int_a = * ( (uint16_t*) a );
-    int int_b = * ( (int*) b );
+    uint16_t int_b = * ( (uint16_t*) b );
 
     if ( int_a == int_b ) return 0;
     else if ( int_a < int_b ) return -1;

src/ATBAPP/support/CashUtils.cpp

@@ -0,0 +1,74 @@
+#include "CashUtils.h"
+
+#include <QDebug>
+
+#define MAX_COINS 64
+#define MAX_NOTES 16
+
+/*****************************************************************************
+* Get current inserted coins
+*
+* getAllInsertedCoins(uint16_t *types, uint16_t *values)
+*       all inserted coins of this past transaction are stored, max 64
+*/
+uint32_t CashUtils::getAmountOfInsertedCoins(hwinf* hw)
+{
+    uint32_t result = 0;
+
+    uint16_t types[MAX_COINS];
+    uint16_t values[MAX_COINS];
+    hw->getAllInsertedCoins(types, values);
+
+    for (int i = 0; i < MAX_COINS; i++) {
+        result += values[i];
+    }
+
+    return result;
+}
+
+
+/*****************************************************************************
+ * Get current inserted notes
+ *
+ * virtual uint8_t bna_getCurrentNotes(uint16_t latestBill, uint16_t *currentNotes) const =0;
+ * returns number of collected bank notes since start-command (current transaction)
+ *    latestBill: last accepted bank note, value in cent
+ *    currentNotes an array with up to 16 (further) notes collected
+ *
+ */
+uint32_t CashUtils::getAmountOfInsertedNotes(hwinf* hw)
+{
+    uint32_t result = 0;
+    uint8_t numberOfInsertedNotes;
+
+    uint16_t beforeArray = 0;
+    uint16_t currentNotes[4];
+    uint16_t afterArray = 0;
+    numberOfInsertedNotes = hw->bna_getCurrentNotes(0, currentNotes);
+
+    if ( (beforeArray != 0) || (afterArray != 0) ) {
+        qCritical() << "CashUtils::getAmountOfInsertedNotes() ERROR: Array";
+    }
+
+    if (numberOfInsertedNotes == 99) {
+        // Error
+        qCritical() << "CashUtils::getAmountOfInsertedNotes() ERROR: ";
+        for (int i = 0; i < 4; i++) {
+        qCritical() << "   currentNotes[" << i << "] = " << currentNotes[i];
+        }
+    }
+    else {
+        // no error
+        result = currentNotes[3];
+        result = ( result << 16 ) | currentNotes[2];
+    }
+
+    // DEBUG
+    qCritical() << "--------------------------------------------------";
+    qCritical() << "CashUtils::getAmountOfInsertedNotes()";
+    qCritical() << "          numberOfInsertedNotes = " << numberOfInsertedNotes;
+    qCritical() << "                         result = " << result;
+    qCritical() << "--------------------------------------------------";
+
+    return result;
+}

src/ATBAPP/support/CashUtils.h

@@ -0,0 +1,14 @@
+#ifndef CASHUTILS_H
+#define CASHUTILS_H
+
+#include <QObject>
+#include "interfaces.h"
+
+namespace CashUtils {
+
+uint32_t getAmountOfInsertedCoins(hwinf* hw);
+uint32_t getAmountOfInsertedNotes(hwinf* hw);
+
+}
+
+#endif // CASHUTILS_H

src/ATBAPP/support/DBusController.xml

@@ -0,0 +1,14 @@
+<!DOCTYPE node PUBLIC "-//freedesktop//DTD D-BUS Object Introspection 1.0//EN" "http://www.freedesktop.org/standards/dbus/1.0/introspect.dtd">
+<node>
+  <interface name="eu.atb.ptu.systemcontrol">
+    <signal name="wokeUpFrom">
+      <arg name="source" type="y" direction="out"/>
+    </signal>
+    <method name="startBackgroundTask">
+      <arg name="id" type="s" direction="in"/>
+    </method>
+    <method name="finishedBackgroundTask">
+      <arg name="id" type="s" direction="in"/>
+    </method>
+  </interface>
+</node>

src/ATBAPP/support/DBusControllerInterface.cpp

@@ -0,0 +1,26 @@
+/*
+ * This file was generated by qdbusxml2cpp version 0.7
+ * Command line was: qdbusxml2cpp -p DBusControllerInterface -c DBusControllerInterface DBusController.xml
+ *
+ * qdbusxml2cpp is Copyright (C) 2015 The Qt Company Ltd.
+ *
+ * This is an auto-generated file.
+ * This file may have been hand-edited. Look for HAND-EDIT comments
+ * before re-generating it.
+ */
+
+#include "DBusControllerInterface.h"
+
+/*
+ * Implementation of interface class DBusControllerInterface
+ */
+
+DBusControllerInterface::DBusControllerInterface(const QString &service, const QString &path, const QDBusConnection &connection, QObject *parent)
+    : QDBusAbstractInterface(service, path, staticInterfaceName(), connection, parent)
+{
+}
+
+DBusControllerInterface::~DBusControllerInterface()
+{
+}
+

src/ATBAPP/support/DBusControllerInterface.h

@@ -0,0 +1,64 @@
+/*
+ * This file was generated by qdbusxml2cpp version 0.7
+ * Command line was: qdbusxml2cpp -p DBusControllerInterface -c DBusControllerInterface DBusController.xml
+ *
+ * qdbusxml2cpp is Copyright (C) 2015 The Qt Company Ltd.
+ *
+ * This is an auto-generated file.
+ * Do not edit! All changes made to it will be lost.
+ */
+
+#ifndef DBUSCONTROLLERINTERFACE_H
+#define DBUSCONTROLLERINTERFACE_H
+
+#include <QtCore/QObject>
+#include <QtCore/QByteArray>
+#include <QtCore/QList>
+#include <QtCore/QMap>
+#include <QtCore/QString>
+#include <QtCore/QStringList>
+#include <QtCore/QVariant>
+#include <QtDBus/QtDBus>
+
+/*
+ * Proxy class for interface eu.atb.ptu.systemcontrol
+ */
+class DBusControllerInterface: public QDBusAbstractInterface
+{
+    Q_OBJECT
+public:
+    static inline const char *staticInterfaceName()
+    { return "eu.atb.ptu.systemcontrol"; }
+
+public:
+    DBusControllerInterface(const QString &service, const QString &path, const QDBusConnection &connection, QObject *parent = 0);
+
+    ~DBusControllerInterface();
+
+public Q_SLOTS: // METHODS
+    inline QDBusPendingReply<> finishedBackgroundTask(const QString &id)
+    {
+        QList<QVariant> argumentList;
+        argumentList << QVariant::fromValue(id);
+        return asyncCallWithArgumentList(QLatin1String("finishedBackgroundTask"), argumentList);
+    }
+
+    inline QDBusPendingReply<> startBackgroundTask(const QString &id)
+    {
+        QList<QVariant> argumentList;
+        argumentList << QVariant::fromValue(id);
+        return asyncCallWithArgumentList(QLatin1String("startBackgroundTask"), argumentList);
+    }
+
+Q_SIGNALS: // SIGNALS
+    void wokeUpFrom(uchar source);
+};
+
+namespace eu {
+  namespace atb {
+    namespace ptu {
+      typedef ::DBusControllerInterface systemcontrol;
+    }
+  }
+}
+#endif

src/ATBAPP/support/JSON.cpp

@@ -0,0 +1,735 @@
+#include <QDateTime>
+#include <QStringList>
+#include "JSON.h"
+
+
+
+namespace JSON {
+    static QString dateFormat, dateTimeFormat;
+    static bool prettySerialize = false;
+
+    static QString sanitizeString(QString str);
+    static QByteArray join(const QList<QByteArray> &list, const QByteArray &sep);
+    static QVariant parseValue(const QString &json, int &index, bool &success);
+    static QVariant parseObject(const QString &json, int &index, bool &success);
+    static QVariant parseArray(const QString &json, int &index, bool &success);
+    static QVariant parseString(const QString &json, int &index, bool &success);
+    static QVariant parseNumber(const QString &json, int &index);
+    static int lastIndexOfNumber(const QString &json, int index);
+    static void eatWhitespace(const QString &json, int &index);
+    static int lookAhead(const QString &json, int index);
+    static int nextToken(const QString &json, int &index);
+
+
+    template<typename T>
+    QByteArray serializeMap(const T &map, bool &success, int _level = 0) {
+        QByteArray newline;
+        QByteArray tabs;
+        QByteArray tabsFields;
+        if (prettySerialize && !map.isEmpty()) {
+            newline = "\n";
+            for (int l=1; l<_level; l++) {
+                tabs += "    ";
+            }
+            tabsFields = tabs + "    ";
+        }
+
+        QByteArray str = "{" + newline;
+        QList<QByteArray> pairs;
+        for (typename T::const_iterator it = map.begin(), itend = map.end(); it != itend; ++it) {
+            bool otherSuccess = true;
+            QByteArray serializedValue = serialize(it.value(), otherSuccess, _level);
+            if (serializedValue.isNull()) {
+                success = false;
+                break;
+            }
+            pairs << tabsFields + sanitizeString(it.key()).toUtf8() + ":" + (prettySerialize ? " " : "") + serializedValue;
+        }
+
+        str += join(pairs, "," + newline) + newline;
+        str += tabs + "}";
+        return str;
+    }
+
+
+    void insert(QVariant &v, const QString &key, const QVariant &value);
+    void append(QVariant &v, const QVariant &value);
+
+    template<typename T>
+    void cloneMap(QVariant &json, const T &map) {
+    for (typename T::const_iterator it = map.begin(), itend = map.end(); it != itend; ++it) {
+        insert(json, it.key(), (*it));
+    }
+    }
+
+    template<typename T>
+    void cloneList(QVariant &json, const T &list) {
+    for (typename T::const_iterator it = list.begin(), itend = list.end(); it != itend; ++it) {
+        append(json, (*it));
+    }
+    }
+
+
+    /**
+     * parse
+     */
+    QVariant parse(const QString &json) {
+        bool success = true;
+        return parse(json, success);
+    }
+
+    /**
+     * parse
+     */
+    QVariant parse(const QString &json, bool &success) {
+        success = true;
+
+        // Return an empty QVariant if the JSON data is either null or empty
+        if (!json.isNull() || !json.isEmpty()) {
+            QString data = json;
+            // We'll start from index 0
+            int index = 0;
+
+            // Parse the first value
+            QVariant value = parseValue(data, index, success);
+
+            // Return the parsed value
+            return value;
+        } else {
+            // Return the empty QVariant
+            return QVariant();
+        }
+    }
+
+
+
+    /**
+     * clone
+     */
+    QVariant clone(const QVariant &data) {
+    QVariant v;
+
+    if (data.type() == QVariant::Map) {
+        cloneMap(v, data.toMap());
+    } else if (data.type() == QVariant::Hash) {
+        cloneMap(v, data.toHash());
+    } else if (data.type() == QVariant::List) {
+        cloneList(v, data.toList());
+    } else if (data.type() == QVariant::StringList) {
+        cloneList(v, data.toStringList());
+    } else {
+        v = QVariant(data);
+    }
+
+    return v;
+    }
+
+    /**
+     * insert value (map case)
+     */
+    void insert(QVariant &v, const QString &key, const QVariant &value) {
+    if (!v.canConvert<QVariantMap>()) v = QVariantMap();
+    QVariantMap *p = (QVariantMap *)v.data();
+    p->insert(key, clone(value));
+    }
+
+    /**
+     * append value (list case)
+     */
+    void append(QVariant &v, const QVariant &value) {
+    if (!v.canConvert<QVariantList>()) v = QVariantList();
+    QVariantList *p = (QVariantList *)v.data();
+    p->append(value);
+    }
+
+    QByteArray serialize(const QVariant &data) {
+        bool success = true;
+        return serialize(data, success);
+    }
+
+
+
+    QByteArray serialize(const QVariant &data, bool &success, int _level /*= 0*/) {
+        QByteArray newline;
+        QByteArray tabs;
+        QByteArray tabsFields;
+        if (prettySerialize) {
+            newline = "\n";
+            for (int l=0; l<_level; l++) {
+                tabs += "    ";
+            }
+            tabsFields = tabs + "    ";
+        }
+
+        QByteArray str;
+        success = true;
+
+        if (!data.isValid()) { // invalid or null?
+            str = "null";
+        } else if ((data.type() == QVariant::List) ||
+                   (data.type() == QVariant::StringList)) { // variant is a list?
+            QList<QByteArray> values;
+            const QVariantList list = data.toList();
+            Q_FOREACH(const QVariant& v, list) {
+                bool otherSuccess = true;
+                QByteArray serializedValue = serialize(v, otherSuccess, _level+1);
+                if (serializedValue.isNull()) {
+                    success = false;
+                    break;
+                }
+                values << tabsFields + serializedValue;
+            }
+
+            if (!values.isEmpty()) {
+                str = "[" + newline + join( values, "," + newline ) + newline + tabs + "]";
+            } else {
+                str = "[]";
+            }
+        } else if (data.type() == QVariant::Hash) { // variant is a hash?
+            str = serializeMap<>(data.toHash(), success, _level+1);
+        } else if (data.type() == QVariant::Map) { // variant is a map?
+            str = serializeMap<>(data.toMap(), success, _level+1);
+        } else if ((data.type() == QVariant::String) ||
+                   (data.type() == QVariant::ByteArray)) {// a string or a byte array?
+            str = sanitizeString(data.toString()).toUtf8();
+        } else if (data.type() == QVariant::Double) { // double?
+            double value = data.toDouble(&success);
+            if (success) {
+                str = QByteArray::number(value, 'g');
+                if (!str.contains(".") && ! str.contains("e")) {
+                    str += ".0";
+                }
+            }
+        } else if (data.type() == QVariant::Bool) { // boolean value?
+            str = data.toBool() ? "true" : "false";
+        } else if (data.type() == QVariant::ULongLong) { // large unsigned number?
+            str = QByteArray::number(data.value<qulonglong>());
+        } else if (data.canConvert<qlonglong>()) { // any signed number?
+            str = QByteArray::number(data.value<qlonglong>());
+        } else if (data.canConvert<long>()) { //TODO: this code is never executed because all smaller types can be converted to qlonglong
+            str = QString::number(data.value<long>()).toUtf8();
+        } else if (data.type() == QVariant::DateTime) { // datetime value?
+            str = sanitizeString(dateTimeFormat.isEmpty()
+                                 ? data.toDateTime().toString()
+                                 : data.toDateTime().toString(dateTimeFormat)).toUtf8();
+        } else if (data.type() == QVariant::Date) { // date value?
+            str = sanitizeString(dateTimeFormat.isEmpty()
+                                 ? data.toDate().toString()
+                                 : data.toDate().toString(dateFormat)).toUtf8();
+        } else if (data.canConvert<QString>()) { // can value be converted to string?
+            // this will catch QUrl, ... (all other types which can be converted to string)
+            str = sanitizeString(data.toString()).toUtf8();
+        } else {
+            success = false;
+        }
+
+        if (success) {
+            return str;
+        }
+        return QByteArray();
+    }
+
+    QString serializeStr(const QVariant &data) {
+        return QString::fromUtf8(serialize(data));
+    }
+
+    QString serializeStr(const QVariant &data, bool &success) {
+        return QString::fromUtf8(serialize(data, success));
+    }
+
+
+
+
+    /**
+     * \enum JsonToken
+     */
+    enum JsonToken {
+        JsonTokenNone = 0,
+        JsonTokenCurlyOpen = 1,
+        JsonTokenCurlyClose = 2,
+        JsonTokenSquaredOpen = 3,
+        JsonTokenSquaredClose = 4,
+        JsonTokenColon = 5,
+        JsonTokenComma = 6,
+        JsonTokenString = 7,
+        JsonTokenNumber = 8,
+        JsonTokenTrue = 9,
+        JsonTokenFalse = 10,
+        JsonTokenNull = 11
+    };
+
+    static QString sanitizeString(QString str) {
+        str.replace(QLatin1String("\\"), QLatin1String("\\\\"));
+        str.replace(QLatin1String("\""), QLatin1String("\\\""));
+        str.replace(QLatin1String("\b"), QLatin1String("\\b"));
+        str.replace(QLatin1String("\f"), QLatin1String("\\f"));
+        str.replace(QLatin1String("\n"), QLatin1String("\\n"));
+        str.replace(QLatin1String("\r"), QLatin1String("\\r"));
+        str.replace(QLatin1String("\t"), QLatin1String("\\t"));
+        return QString(QLatin1String("\"%1\"")).arg(str);
+    }
+
+
+
+    static QByteArray join(const QList<QByteArray> &list, const QByteArray &sep) {
+        QByteArray res;
+        Q_FOREACH(const QByteArray &i, list) {
+            if (!res.isEmpty()) {
+                res += sep;
+            }
+            res += i;
+        }
+        return res;
+    }
+
+
+
+
+    /**
+     * parseValue
+     */
+    static QVariant parseValue(const QString &json, int &index, bool &success) {
+        // Determine what kind of data we should parse by
+        // checking out the upcoming token
+        switch(lookAhead(json, index)) {
+            case JsonTokenString:
+                return parseString(json, index, success);
+            case JsonTokenNumber:
+                return parseNumber(json, index);
+            case JsonTokenCurlyOpen:
+                return parseObject(json, index, success);
+            case JsonTokenSquaredOpen:
+                return parseArray(json, index, success);
+            case JsonTokenTrue:
+                nextToken(json, index);
+                return QVariant(true);
+            case JsonTokenFalse:
+                nextToken(json, index);
+                return QVariant(false);
+            case JsonTokenNull:
+                nextToken(json, index);
+                return QVariant();
+            case JsonTokenNone:
+                break;
+        }
+
+        // If there were no tokens, flag the failure and return an empty QVariant
+        success = false;
+        return QVariant();
+    }
+
+
+
+
+    /**
+     * parseObject
+     */
+    static QVariant parseObject(const QString &json, int &index, bool &success) {
+        QVariantMap map;
+        int token;
+
+        // Get rid of the whitespace and increment index
+        nextToken(json, index);
+
+        // Loop through all of the key/value pairs of the object
+        bool done = false;
+        while (!done) {
+            // Get the upcoming token
+            token = lookAhead(json, index);
+
+            if (token == JsonTokenNone) {
+                success = false;
+                return QVariantMap();
+            } else if (token == JsonTokenComma) {
+                nextToken(json, index);
+            } else if (token == JsonTokenCurlyClose) {
+                nextToken(json, index);
+                return map;
+            } else {
+                // Parse the key/value pair's name
+                QString name = parseString(json, index, success).toString();
+
+                if (!success) {
+                    return QVariantMap();
+                }
+
+                // Get the next token
+                token = nextToken(json, index);
+
+                // If the next token is not a colon, flag the failure
+                // return an empty QVariant
+                if (token != JsonTokenColon) {
+                    success = false;
+                    return QVariant(QVariantMap());
+                }
+
+                // Parse the key/value pair's value
+                QVariant value = parseValue(json, index, success);
+
+                if (!success) {
+                    return QVariantMap();
+                }
+
+                // Assign the value to the key in the map
+                map[name] = value;
+            }
+        }
+
+        // Return the map successfully
+        return QVariant(map);
+    }
+
+
+    /**
+     * parseArray
+     */
+    static QVariant parseArray(const QString &json, int &index, bool &success) {
+        QVariantList list;
+
+        nextToken(json, index);
+
+        bool done = false;
+        while(!done) {
+            int token = lookAhead(json, index);
+
+            if (token == JsonTokenNone) {
+                success = false;
+                return QVariantList();
+            } else if (token == JsonTokenComma) {
+                nextToken(json, index);
+            } else if (token == JsonTokenSquaredClose) {
+                nextToken(json, index);
+                break;
+            } else {
+                QVariant value = parseValue(json, index, success);
+                if (!success) {
+                    return QVariantList();
+                }
+                list.push_back(value);
+            }
+        }
+
+        return QVariant(list);
+    }
+
+
+
+
+    /**
+     * parseString
+     */
+    static QVariant parseString(const QString &json, int &index, bool &success) {
+        QString s;
+        QChar c;
+
+        eatWhitespace(json, index);
+
+        c = json[index++];
+
+        bool complete = false;
+        while(!complete) {
+            if (index == json.size()) {
+                break;
+            }
+
+            c = json[index++];
+
+            if (c == '\"') {
+                complete = true;
+                break;
+            } else if (c == '\\') {
+                if (index == json.size()) {
+                    break;
+                }
+
+                c = json[index++];
+
+                if (c == '\"') {
+                    s.append('\"');
+                } else if (c == '\\') {
+                    s.append('\\');
+                } else if (c == '/') {
+                    s.append('/');
+                } else if (c == 'b') {
+                    s.append('\b');
+                } else if (c == 'f') {
+                    s.append('\f');
+                } else if (c == 'n') {
+                    s.append('\n');
+                } else if (c == 'r') {
+                    s.append('\r');
+                } else if (c == 't') {
+                    s.append('\t');
+                } else if (c == 'u') {
+                    int remainingLength = json.size() - index;
+                    if (remainingLength >= 4) {
+                        QString unicodeStr = json.mid(index, 4);
+
+                        int symbol = unicodeStr.toInt(0, 16);
+
+                        s.append(QChar(symbol));
+
+                        index += 4;
+                    } else {
+                        break;
+                    }
+                }
+            } else {
+                s.append(c);
+            }
+        }
+
+        if (!complete) {
+            success = false;
+            return QVariant();
+        }
+
+        return QVariant(s);
+    }
+
+
+
+    /**
+     * parseNumber
+     */
+    static QVariant parseNumber(const QString &json, int &index) {
+        eatWhitespace(json, index);
+
+        int lastIndex = lastIndexOfNumber(json, index);
+        int charLength = (lastIndex - index) + 1;
+        QString numberStr;
+
+        numberStr = json.mid(index, charLength);
+
+        index = lastIndex + 1;
+        bool ok;
+
+        if (numberStr.contains('.')) {
+            return QVariant(numberStr.toDouble(NULL));
+        } else if (numberStr.startsWith('-')) {
+            int i = numberStr.toInt(&ok);
+            if (!ok) {
+                qlonglong ll = numberStr.toLongLong(&ok);
+                return ok ? ll : QVariant(numberStr);
+            }
+            return i;
+        } else {
+            uint u = numberStr.toUInt(&ok);
+            if (!ok) {
+                qulonglong ull = numberStr.toULongLong(&ok);
+                return ok ? ull : QVariant(numberStr);
+            }
+            return u;
+        }
+    }
+
+    /**
+     * lastIndexOfNumber
+     */
+    static int lastIndexOfNumber(const QString &json, int index) {
+        int lastIndex;
+
+        for(lastIndex = index; lastIndex < json.size(); lastIndex++) {
+            if (QString("0123456789+-.eE").indexOf(json[lastIndex]) == -1) {
+                break;
+            }
+        }
+
+        return lastIndex -1;
+    }
+
+    /**
+     * eatWhitespace
+     */
+    static void eatWhitespace(const QString &json, int &index) {
+        for(; index < json.size(); index++) {
+            if (QString(" \t\n\r").indexOf(json[index]) == -1) {
+                break;
+            }
+        }
+    }
+
+    /**
+     * lookAhead
+     */
+    static int lookAhead(const QString &json, int index) {
+        int saveIndex = index;
+        return nextToken(json, saveIndex);
+    }
+
+    /**
+     * nextToken
+     */
+    static int nextToken(const QString &json, int &index) {
+        eatWhitespace(json, index);
+
+        if (index == json.size()) {
+            return JsonTokenNone;
+        }
+
+        QChar c = json[index];
+        index++;
+        switch(c.toLatin1()) {
+            case '{': return JsonTokenCurlyOpen;
+            case '}': return JsonTokenCurlyClose;
+            case '[': return JsonTokenSquaredOpen;
+            case ']': return JsonTokenSquaredClose;
+            case ',': return JsonTokenComma;
+            case '"': return JsonTokenString;
+            case '0': case '1': case '2': case '3': case '4':
+            case '5': case '6': case '7': case '8': case '9':
+            case '-': return JsonTokenNumber;
+            case ':': return JsonTokenColon;
+        }
+        index--; // ^ WTF?
+
+        int remainingLength = json.size() - index;
+
+        // True
+        if (remainingLength >= 4) {
+            if (json[index] == 't' && json[index + 1] == 'r' &&
+                json[index + 2] == 'u' && json[index + 3] == 'e') {
+                index += 4;
+                return JsonTokenTrue;
+            }
+        }
+
+        // False
+        if (remainingLength >= 5) {
+            if (json[index] == 'f' && json[index + 1] == 'a' &&
+                json[index + 2] == 'l' && json[index + 3] == 's' &&
+                json[index + 4] == 'e') {
+                index += 5;
+                return JsonTokenFalse;
+            }
+        }
+
+        // Null
+        if (remainingLength >= 4) {
+            if (json[index] == 'n' && json[index + 1] == 'u' &&
+                json[index + 2] == 'l' && json[index + 3] == 'l') {
+                index += 4;
+                return JsonTokenNull;
+            }
+        }
+
+        return JsonTokenNone;
+    }
+
+    void setDateTimeFormat(const QString &format) {
+        dateTimeFormat = format;
+    }
+
+    void setDateFormat(const QString &format) {
+        dateFormat = format;
+    }
+
+    QString getDateTimeFormat() {
+        return dateTimeFormat;
+    }
+
+    QString getDateFormat() {
+        return dateFormat;
+    }
+
+    void setPrettySerialize(bool enabled) {
+        prettySerialize = enabled;
+    }
+
+    bool isPrettySerialize() {
+        return prettySerialize;
+    }
+
+
+
+    QQueue<BuilderJsonObject *> BuilderJsonObject::created_list;
+
+    BuilderJsonObject::BuilderJsonObject() {
+        // clean objects previous "created"
+        while (!BuilderJsonObject::created_list.isEmpty()) {
+            delete BuilderJsonObject::created_list.dequeue();
+        }
+    }
+
+    BuilderJsonObject::BuilderJsonObject(JsonObject &json) {
+        BuilderJsonObject();
+
+        obj = json;
+    }
+
+    BuilderJsonObject *BuilderJsonObject::set(const QString &key, const QVariant &value) {
+        obj[key] = value;
+
+        return this;
+    }
+
+    BuilderJsonObject *BuilderJsonObject::set(const QString &key, BuilderJsonObject *builder) {
+        return set(key, builder->create());
+    }
+
+    BuilderJsonObject *BuilderJsonObject::set(const QString &key, BuilderJsonArray *builder) {
+        return set(key, builder->create());
+    }
+
+    JsonObject BuilderJsonObject::create() {
+        BuilderJsonObject::created_list.enqueue(this);
+
+        return obj;
+    }
+
+
+    QQueue<BuilderJsonArray *> BuilderJsonArray::created_list;
+
+    BuilderJsonArray::BuilderJsonArray() {
+        // clean objects previous "created"
+        while (!BuilderJsonArray::created_list.isEmpty()) {
+            delete BuilderJsonArray::created_list.dequeue();
+        }
+    }
+
+    BuilderJsonArray::BuilderJsonArray(JsonArray &json) {
+        BuilderJsonArray();
+
+        array = json;
+    }
+
+    BuilderJsonArray *BuilderJsonArray::add(const QVariant &element) {
+        array.append(element);
+
+        return this;
+    }
+
+    BuilderJsonArray *BuilderJsonArray::add(BuilderJsonObject *builder) {
+        return add(builder->create());
+    }
+
+    BuilderJsonArray *BuilderJsonArray::add(BuilderJsonArray *builder) {
+        return add(builder->create());
+    }
+
+    JsonArray BuilderJsonArray::create() {
+        BuilderJsonArray::created_list.enqueue(this);
+
+        return array;
+    }
+
+
+
+
+    BuilderJsonObject *objectBuilder() {
+        return new BuilderJsonObject();
+    }
+
+    BuilderJsonObject *objectBuilder(JsonObject &json) {
+        return new BuilderJsonObject(json);
+    }
+
+    BuilderJsonArray *arrayBuilder() {
+        return new BuilderJsonArray();
+    }
+
+    BuilderJsonArray *arrayBuilder(JsonArray &json) {
+        return new BuilderJsonArray(json);
+    }
+
+} //end namespace

src/ATBAPP/support/JSON.h

@@ -0,0 +1,250 @@
+#ifndef JSON_H
+#define JSON_H
+
+
+#include <QVariant>
+#include <QString>
+#include <QQueue>
+
+/**********************************************
+ * based on: https://github.com/qt-json/qt-json
+ */
+
+/**
+ * \namespace JSON
+ * \brief A JSON data parser
+ *
+ * Json parses a JSON data into a QVariant hierarchy.
+ */
+namespace JSON {
+    typedef QVariantMap JsonObject;
+    typedef QVariantList JsonArray;
+
+
+    /**
+     * Clone a JSON object (makes a deep copy)
+     *
+     * \param data The JSON object
+     */
+    QVariant clone(const QVariant &data);
+
+    /**
+     * Insert value to JSON object (QVariantMap)
+     *
+     * \param v The JSON object
+     * \param key The key
+     * \param value The value
+     */
+    void insert(QVariant &v, const QString &key, const QVariant &value);
+
+    /**
+     * Append value to JSON array (QVariantList)
+     *
+     * \param v The JSON array
+     * \param value The value
+     */
+    void append(QVariant &v, const QVariant &value);
+
+    /**
+     * Parse a JSON string
+     *
+     * \param json The JSON data
+     */
+    QVariant parse(const QString &json);
+
+    /**
+     * Parse a JSON string
+     *
+     * \param json The JSON data
+     * \param success The success of the parsing
+     */
+    QVariant parse(const QString &json, bool &success);
+
+    /**
+     * This method generates a textual JSON representation
+     *
+     * \param data The JSON data generated by the parser.
+     *
+     * \return QByteArray Textual JSON representation in UTF-8
+     */
+    QByteArray serialize(const QVariant &data);
+
+    /**
+     * This method generates a textual JSON representation
+     *
+     * \param data The JSON data generated by the parser.
+     * \param success The success of the serialization
+     *
+     * \return QByteArray Textual JSON representation in UTF-8
+     */
+    QByteArray serialize(const QVariant &data, bool &success, int _level = 0);
+
+    /**
+     * This method generates a textual JSON representation
+     *
+     * \param data The JSON data generated by the parser.
+     *
+     * \return QString Textual JSON representation
+     */
+    QString serializeStr(const QVariant &data);
+
+    /**
+     * This method generates a textual JSON representation
+     *
+     * \param data The JSON data generated by the parser.
+     * \param success The success of the serialization
+     *
+     * \return QString Textual JSON representation
+     */
+    QString serializeStr(const QVariant &data, bool &success, int _level = 0);
+
+    /**
+     * This method sets date(time) format to be used for QDateTime::toString
+     * If QString is empty, Qt::TextDate is used.
+     *
+     * \param format The JSON data generated by the parser.
+     */
+    void setDateTimeFormat(const QString& format);
+    void setDateFormat(const QString& format);
+
+    /**
+     * This method gets date(time) format to be used for QDateTime::toString
+     * If QString is empty, Qt::TextDate is used.
+     */
+    QString getDateTimeFormat();
+    QString getDateFormat();
+
+    /**
+     * @brief setPrettySerialize enable/disabled pretty-print when serialize() a json
+     * @param enabled
+     */
+    void setPrettySerialize(bool enabled);
+
+    /**
+     * @brief isPrettySerialize check if is enabled pretty-print when serialize() a json
+     * @return
+     */
+    bool isPrettySerialize();
+
+
+
+    /**
+     * QVariant based Json object
+     */
+    class Object : public QVariant {
+        template<typename T>
+        Object& insertKey(Object* ptr, const QString& key) {
+            T* p = (T*)ptr->data();
+            if (!p->contains(key)) p->insert(key, QVariant());
+            return *reinterpret_cast<Object*>(&p->operator[](key));
+        }
+        template<typename T>
+        void removeKey(Object *ptr, const QString& key) {
+            T* p = (T*)ptr->data();
+            p->remove(key);
+        }
+    public:
+        Object() : QVariant() {}
+        Object(const Object& ref) : QVariant(ref) {}
+
+        Object& operator=(const QVariant& rhs) {
+            /** It maybe more robust when running under Qt versions below 4.7 */
+            QObject * obj = qvariant_cast<QObject *>(rhs);
+            //  setValue(rhs);
+            setValue(obj);
+            return *this;
+        }
+        Object& operator[](const QString& key) {
+            if (type() == QVariant::Map)
+                return insertKey<QVariantMap>(this, key);
+            else if (type() == QVariant::Hash)
+                return insertKey<QVariantHash>(this, key);
+
+            setValue(QVariantMap());
+
+            return insertKey<QVariantMap>(this, key);
+        }
+        const Object& operator[](const QString& key) const {
+            return const_cast<Object*>(this)->operator[](key);
+        }
+        void remove(const QString& key) {
+            if (type() == QVariant::Map)
+                removeKey<QVariantMap>(this, key);
+            else if (type() == QVariant::Hash)
+                removeKey<QVariantHash>(this, key);
+        }
+    };
+
+
+    class BuilderJsonArray;
+
+    /**
+     * @brief The BuilderJsonObject class
+     */
+    class BuilderJsonObject {
+
+        public:
+            BuilderJsonObject();
+            BuilderJsonObject(JsonObject &json);
+
+            BuilderJsonObject *set(const QString &key, const QVariant &value);
+            BuilderJsonObject *set(const QString &key, BuilderJsonObject *builder);
+            BuilderJsonObject *set(const QString &key, BuilderJsonArray *builder);
+            JsonObject create();
+
+        private:
+            static QQueue<BuilderJsonObject *> created_list;
+
+            JsonObject obj;
+    };
+
+
+    /**
+     * @brief The BuilderJsonArray class
+     */
+    class BuilderJsonArray {
+
+        public:
+            BuilderJsonArray();
+            BuilderJsonArray(JsonArray &json);
+
+            BuilderJsonArray *add(const QVariant &element);
+            BuilderJsonArray *add(BuilderJsonObject *builder);
+            BuilderJsonArray *add(BuilderJsonArray *builder);
+            JsonArray create();
+
+        private:
+            static QQueue<BuilderJsonArray *> created_list;
+
+            JsonArray array;
+    };
+
+
+    /**
+     * @brief Create a BuilderJsonObject
+     * @return
+     */
+    BuilderJsonObject *objectBuilder();
+
+    /**
+     * @brief Create a BuilderJsonObject starting from copy of another json
+     * @return
+     */
+    BuilderJsonObject *objectBuilder(JsonObject &json);
+
+    /**
+     * @brief Create a BuilderJsonArray
+     * @return
+     */
+    BuilderJsonArray *arrayBuilder();
+
+    /**
+     * @brief Create a BuilderJsonArray starting from copy of another json
+     * @return
+     */
+    BuilderJsonArray *arrayBuilder(JsonArray &json);
+}
+
+
+
+#endif // JSON_H

src/ATBAPP/support/PTUSystem.cpp

@@ -0,0 +1,109 @@
+#include "PTUSystem.h"
+
+#include <QDebug>
+#include <QDir>
+#include <QFileInfo>
+
+
+PTUSystem::PTUSystem(QObject *parent) : QObject(parent)
+{
+
+}
+
+
+
+
+quint16 PTUSystem::readCustomerNumber()
+{
+    QString resultFilename;
+    QStringList fileNameList;
+    fileNameList << "/mnt/system_data/cust_nr"
+                 << "/etc/cust_nr";
+    for (const auto& filename : fileNameList) {
+        if (QFileInfo(filename).isReadable()) {
+            resultFilename = filename;
+            break;
+        }
+    }
+
+    QString resultString = PTUSystem::readConfigString(resultFilename);
+    return static_cast<quint16>(resultString.toInt());
+}
+
+quint16 PTUSystem::readMachineNumber()
+{
+    QString resultFilename;
+    QStringList fileNameList;
+    fileNameList << "/mnt/system_data/machine_nr"
+                 << "/etc/machine_nr";
+    for (const auto& filename : fileNameList) {
+        if (QFileInfo(filename).isReadable()) {
+            resultFilename = filename;
+            break;
+        }
+    }
+
+    QString resultString = PTUSystem::readConfigString(resultFilename);
+    return static_cast<quint16>(resultString.toInt());
+}
+
+quint16 PTUSystem::readZoneNumber()
+{
+    QString resultFilename;
+    QStringList fileNameList;
+    fileNameList << "/mnt/system_data/zone_nr"
+                 << "/etc/zone_nr";
+    for (const auto& filename : fileNameList) {
+        if (QFileInfo(filename).isReadable()) {
+            resultFilename = filename;
+            break;
+        }
+    }
+
+    QString resultString = PTUSystem::readConfigString(resultFilename);
+    return static_cast<quint16>(resultString.toInt());
+}
+
+quint16 PTUSystem::readGroupNumber()
+{
+    QString resultFilename;
+    QStringList fileNameList;
+    fileNameList << "/mnt/system_data/group_nr"
+                 << "/etc/group_nr";
+    for (const auto& filename : fileNameList) {
+        if (QFileInfo(filename).isReadable()) {
+            resultFilename = filename;
+            break;
+        }
+    }
+
+    QString resultString = PTUSystem::readConfigString(resultFilename);
+    return static_cast<quint16>(resultString.toInt());
+}
+
+
+QString PTUSystem::readConfigString(const QString & filename)
+{
+    QFileInfo fileinfo(filename);
+
+    if (! fileinfo.isReadable() ) {
+        qDebug() << "PTUSystem::readConfigString(): \"" << filename << "\" is not readable";
+        return "";
+    }
+
+    QFile file(filename);
+
+    if (!file.open(QIODevice::ReadOnly | QIODevice::Text)) {
+        qDebug() << "PTUSystem::readConfigString() cannot open file: " << filename;
+        return "";
+    }
+
+    QTextStream in(&file);
+
+    QString stringValue = in.readLine(100);
+    qDebug() << "PTUSystem::readConfigString() stringValue = " << stringValue;
+
+    file.close();
+
+    return stringValue;
+}

src/ATBAPP/support/PTUSystem.h

@@ -0,0 +1,24 @@
+#ifndef PTUSYSTEM_H
+#define PTUSYSTEM_H
+
+#include <QObject>
+
+class PTUSystem : public QObject
+{
+    Q_OBJECT
+public:
+    explicit PTUSystem(QObject *parent = nullptr);
+
+    static quint16 readCustomerNumber();
+    static quint16 readMachineNumber();
+    static quint16 readZoneNumber();
+    static quint16 readGroupNumber();
+
+private:
+    static QString readConfigString(const QString & filename);
+
+signals:
+
+};
+
+#endif // PTUSYSTEM_H

src/ATBAPP/support/PersistentData.cpp

@@ -0,0 +1,140 @@
+#include "PersistentData.h"
+
+#include <QFile>
+#include <QFileInfo>
+#include <QDir>
+#include <QDateTime>
+#include <QDataStream>
+#include <QDebug>
+
+PersistentData::PersistentData(const QString &datafileName, QObject *parent)
+    : QObject(parent)
+    , isChangedFlag(false)
+{
+    // load persistant data, if available
+    this->filename = datafileName;
+
+    QFileInfo dataFileInfo(this->filename);
+    QString dataFilePath = dataFileInfo.path();
+
+    QDir dir;
+    if ( ! dir.exists(dataFilePath)) {
+        qCritical() << "Persistent data file does not exist!";
+        qCritical() << "          --> create new: " << this->filename;
+        dir.mkpath(dataFilePath);
+    }
+
+    this->read();
+}
+
+
+void PersistentData::serializeToFile()
+{
+    this->save();
+}
+
+void PersistentData::save()
+{
+    QFile fileOut(this->filename);
+    if (fileOut.open(QIODevice::WriteOnly))
+    {
+        QDataStream out(&fileOut);
+        out.setVersion(QDataStream::Qt_4_6);
+
+        out << this->hash;
+        fileOut.flush();
+        fileOut.close();
+    }
+}
+
+void PersistentData::read()
+{
+    QFile fileIn(this->filename);
+    if (fileIn.open(QIODevice::ReadOnly))
+    {
+        QDataStream in(&fileIn);
+        in.setVersion(QDataStream::Qt_4_6);
+
+        in >> hash;
+
+        fileIn.close();
+    }
+}
+
+
+
+QVariant PersistentData::getParameter(const QString & key) const {
+#if defined (ARCH_DesktopLinux)
+    // note: QVariant.toString() returns empty string for custom types
+    qDebug() << "VendingData::getParameter() key = " << key << " value = " << hash.value(key).toString();
+#endif
+    return hash.value(key);
+}
+
+QVariant PersistentData::getParameter(const QString & key)
+{
+    #if defined (ARCH_DesktopLinux)
+    // note: QVariant.toString() returns empty string for custom types
+    qDebug() << "VendingData::getParameter() key = " << key << " value = " << hash.value(key).toString();
+    #endif
+
+    return hash.value(key);
+}
+
+void PersistentData::setParameter(const QString & key, QVariant value)
+{
+    this->isChangedFlag = true;
+
+    #if defined (ARCH_DesktopLinux)
+    // note: QVariant.toString() returns empty string for custom types
+    qDebug() << "VendingData::setParameter() key = " << key << " value = " << value.toString();
+    #endif
+
+    this->hash.insert(key, value);
+}
+
+void PersistentData::clearParameter(const QString & key)
+{
+    this->isChangedFlag = true;
+    this->hash.remove(key);
+}
+
+bool PersistentData::hasParameter(const QString & key) const
+{
+    return hash.contains(key);
+}
+
+
+uint PersistentData::getUintParameter(const QString & key) const
+{
+    qDebug() << "PersistentData::getUintParameter() key = " << key << " value = " << hash.value(key).toString();
+
+    uint returnValue = 0;
+    bool ok;
+
+    returnValue = hash.value(key).toString().toUInt(&ok);
+    if (!ok) returnValue = 0;
+
+    return returnValue;
+}
+
+QList<QString> PersistentData::uniqueKeys() const {
+    return hash.uniqueKeys();
+}
+
+
+void PersistentData::setDCFirmwareVersion(const QString & fw_version)
+{
+    // there must be a version string!
+    if (fw_version.size() < 1) return;
+
+    if (this->hash["dc_fw_version"].toString() != fw_version) {
+        this->isChangedFlag = true;
+        this->hash.insert("dc_fw_version", fw_version);
+    }
+}
+
+QString PersistentData::getDCFirmwareVersion()
+{
+    return this->hash["dc_fw_version"].toString();
+}

src/ATBAPP/support/PersistentData.h

@@ -0,0 +1,49 @@
+#ifndef PERSISTENTDATA_H
+#define PERSISTENTDATA_H
+
+#include <QObject>
+#include <QHash>
+#include <QVariant>
+#include <QList>
+#include <QString>
+
+class PersistentData : public QObject
+{
+    Q_OBJECT
+public:
+    explicit PersistentData(const QString &datafileName, QObject *parent = nullptr);
+
+    void setDCFirmwareVersion(const QString & fw_version);
+    QString getDCFirmwareVersion();
+
+
+    QVariant getParameter(const QString & key);
+    QVariant getParameter(const QString & key) const;
+    void setParameter(const QString & key, QVariant value);
+    void clearParameter(const QString & key);
+    bool hasParameter(const QString & key) const;
+
+    uint getUintParameter(const QString & key) const;
+    QList<QString> uniqueKeys() const;
+
+
+public slots:
+    void serializeToFile();
+
+signals:
+
+
+private:
+    QHash<QString, QVariant> hash;
+
+    QString dc_fw_version;
+
+    QString filename;
+
+    void save();
+    void read();
+
+    bool isChangedFlag;
+};
+
+#endif // PERSISTENTDATA_H