Protect epi/gpi_storeHW/SWVer() by a mutex (guard)

include/com.h

@@ -7,7 +7,6 @@
 //#include <QString>
 #include <QTimer>
 #include <QSerialPort>
-#include <QVector>
 #include "tslib.h"
 #include "controlBus.h"
 #include "interfaces.h"
@@ -33,8 +32,6 @@ class T_com : public QObject        //,  public QPlainTextEdit
 //    QSerialPort *CatSerial = nullptr;
     QSerialPort *CatSerial;
 
-    uint32_t writeCount = 0;
-
     //char oeffneSerialPort();
     char open_Serial_Port();
     void closeSerialPort();
@@ -64,8 +61,6 @@ public:
     bool readFromSerial(QByteArray &data, uint16_t &sendLength);
         // retval: true: data available
 
-    uint32_t getWriteCount() { return writeCount; }
-
 /*
     uint8_t getAllPortPins(void);
         // rs232pins: all signals bitwise coded in one byte:

include/datIf.h

@@ -168,9 +168,6 @@ class T_datif : public QObject
     QTimer *datif_trigger;
     uint8_t selectedSlaveAddr;
 
-    bool waitForTestResponse = false;
-    uint32_t readCount = 0;
-
 private slots:
     char datif_cycleSend();
     void StoredRecData();

include/hwapi.h

@@ -63,8 +63,7 @@ V4.0  6.9.2023: activating DC-Bootloader in slve-lib (SM)
 #include "shared_mem_buffer.h"
 #include "runProc.h"
 #include "interfaces.h"
-#include <QScopedPointer>
+
-#include <QFileSystemWatcher>
 
 /*
  * select Plugin Type here
@@ -99,7 +98,7 @@ V4.0  6.9.2023: activating DC-Bootloader in slve-lib (SM)
 //#define THIS_IS_CA_MASTER
 
 
-class QFileSystemWatcher;
+
 class QSharedMemory;
 class DownloadThread;
 class ReportingThread;
@@ -116,18 +115,19 @@ private:
     QSharedMemory *m_sharedMem;
     ReportingThread *m_reportingThread;
     DownloadThread *m_downloadThread;
-    QScopedPointer<QFileSystemWatcher> m_fileSystemWatcher;
+    //QTimer *hwapi_triggerBL;
-    QString m_watchedFile;
-
-private slots:
-    void onCCWakeGpioChanged(QString const &file);
 
 public:
     explicit hwapi(QObject *parent = nullptr);
 
 
+
     #ifdef  THIS_IS_CA_MASTER
-    T_datif *myDatif;
+        T_datif *myDatif;
+    #else // THIS_IS_CA_SLAVE
+        QString getVersions();
+        void resetVersions();
+        bool m_resetVersions = false;
     #endif
 
     T_runProc *runProcess;
@@ -1406,6 +1406,8 @@ public:
 
 
 signals:
+    void hwapi_restoredVersions();
+
     void hwapi_reportDCDownloadStatus(QString const&) const override;
     void hwapi_reportDCDownloadSuccess(QString const&) const override;
     void hwapi_reportDCDownloadFailure(QString const&) const override;

include/prot.h

@@ -122,9 +122,6 @@ public:
                            uint8_t  *RdDlen, uint8_t *receivedData);
         // retval: data valid, only one time true
 
-    uint16_t getReadSource() { return readSource; } // readSource contains last command sent to device controller
-    T_com *getSerialPort() { return mySerialPort; } // utility function
-
 
 signals:
     void framerecieved();   //bool gotINdata);

src/com.cpp

@@ -1,6 +1,5 @@
 #include "com.h"
 #include <QDebug>
-#include <QDateTime>
 //#include "controlBus.h"
 
 //////////////////////////////////////////////////////////////////////////////////
@@ -21,48 +20,13 @@ void T_com::writeToSerial(const QByteArray &data, uint16_t sendLength)
 {
     sendBuffer=data;
     sendLen=sendLength;
+    if (CatSerial->isOpen())
+    {
+        //qDebug() << "sending..." << sendBuffer;
+        CatSerial->write(sendBuffer);
+    } else
+        qDebug() << "error sending, port is not open";
 
-    // logic: exactly one command is sent to DC. no other command can be sent
-    // until the respond has been read from the serial line.
-
-    if (CatSerial->isOpen()) {
-        if (CatSerial->error() != QSerialPort::NoError) {
-            qCritical() << __func__ << "" << __LINE__ << "ERROR on serial line" << CatSerial->errorString();
-            CatSerial->clearError();
-            qCritical() << __func__ << "" << __LINE__ << "cleared error on serial line";
-        }
-
-        if (!CatSerial->atEnd()) {
-            qCritical() << QString("ERROR %1 bytes available on serial line before write").arg(CatSerial->bytesAvailable());
-            qCritical() << CatSerial->readAll().toHex(':');
-            CatSerial->clear();
-            qCritical() << __func__ << "" << __LINE__ << "read all data from serial line";
-        }
-
-        CatSerial->clear();
-
-        QByteArray buffer(data);
-        int bytesWritten = CatSerial->write(buffer);
-        if (bytesWritten == -1) {
-            qCritical() << __func__ << ":" << __LINE__
-                        << QString("ERROR %1 for sending %2").arg(CatSerial->errorString()).arg(data.toHex(':').constData());
-            CatSerial->clearError();
-            qCritical() << __func__ << ":" << __LINE__ << "cleared error on serial line. returning ...";
-            return;
-        }
-
-        CatSerial->flush();
-        writeCount += 1;
-
-        // only for debugging
-        // if ((unsigned int)data.constData()[2] == 31) { // request dynamic data
-        //    qCritical() << __func__ << ":" << __LINE__ << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
-        //                << "write cmd" << (unsigned int)data.constData()[2];
-        //}
-    } else {
-        qCritical() << __func__ << ":" << __LINE__
-                    << "ERROR sending" << data.toHex(':') << "port is not open";
-    }
 }
 
 
@@ -118,7 +82,6 @@ T_com::T_com(QObject *parent) : QObject(parent)
     ChkConnectTimer->setSingleShot(false);
     ChkConnectTimer->start(100);     // in ms
     com_want2read=0;
-    writeCount = 0;
 }
 
 

src/datIf.cpp

@@ -6,12 +6,10 @@ History:
 
 */
 #include "datIf.h"
-#include "hwapi.h"
 #include "sendWRcmd.h"
 #include "controlBus.h"
 #include "storeINdata.h"
 #include <QDebug>
-#include <QDateTime>
 #include <datei.h>
 #include <QDir>
 
@@ -126,7 +124,6 @@ T_datif::T_datif(QObject *parent) : QObject(parent)
     datif_pNextCmd=0;
     datif_sendSlowCmd=0;
 
-    readCount = 0;
 }
 
 void T_datif::resetChain(void)
@@ -483,76 +480,6 @@ void T_datif::StoredRecData()
     gpi_storeLastResult(res);
 }
 
-static void dump(T_moduleCondition const *modCond) {
-    qCritical() << QString("modCond->ram                %1 (%2)").arg(modCond->ram).arg(modCond->ram, 0, 16);
-    qCritical() << QString("modCond->intEe              %1 (%2)").arg(modCond->intEe).arg(modCond->intEe, 0, 16);
-    qCritical() << QString("modCond->extEe              %1 (%2)").arg(modCond->extEe).arg(modCond->extEe, 0, 16);
-    qCritical() << QString("modCond->rtc                %1 (%2)").arg(modCond->rtc).arg(modCond->rtc, 0, 16);
-    qCritical() << QString("modCond->boardHw            %1 (%2)").arg(modCond->boardHw).arg(modCond->boardHw, 0, 16);
-    qCritical() << QString("modCond->printer            %1 (%2)").arg(modCond->printer).arg(modCond->printer, 0, 16);
-    qCritical() << QString("modCond->modem              %1 (%2)").arg(modCond->modem).arg(modCond->modem, 0, 16);
-    qCritical() << QString("modCond->signal             %1 (%2)").arg(modCond->signal).arg(modCond->signal, 0, 16);
-
-    qCritical() << QString("modCond->regist             %1 (%2)").arg(modCond->regist).arg(modCond->regist, 0, 16);
-    qCritical() << QString("modCond->mdbBus             %1 (%2)").arg(modCond->mdbBus).arg(modCond->mdbBus, 0, 16);
-    qCritical() << QString("modCond->coinChecker        %1 (%2)").arg(modCond->coinChecker).arg(modCond->coinChecker, 0, 16);
-    qCritical() << QString("modCond->coinEscrow         %1 (%2)").arg(modCond->coinEscrow).arg(modCond->coinEscrow, 0, 16);
-
-    qCritical() << QString("modCond->mifareReader       %1 (%2)").arg(modCond->mifareReader).arg(modCond->mifareReader, 0, 16);
-    qCritical() << QString("modCond->creditTerm         %1 (%2)").arg(modCond->creditTerm).arg(modCond->creditTerm, 0, 16);
-    qCritical() << QString("modCond->coinReject         %1 (%2)").arg(modCond->coinReject).arg(modCond->coinReject, 0, 16);
-    qCritical() << QString("modCond->coinSafe           %1 (%2)").arg(modCond->coinSafe).arg(modCond->coinSafe, 0, 16);
-
-    qCritical() << QString("modCond->billSafe           %1 (%2)").arg(modCond->billSafe).arg(modCond->billSafe, 0, 16);
-    qCritical() << QString("modCond->voltage            %1 (%2)").arg(modCond->voltage).arg(modCond->voltage, 0, 16);
-    qCritical() << QString("modCond->temper             %1 (%2)").arg(modCond->temper).arg(modCond->temper, 0, 16);
-    qCritical() << QString("modCond->poweronTest        %1 (%2)").arg(modCond->poweronTest).arg(modCond->poweronTest, 0, 16);
-
-    qCritical() << QString("modCond->doorState          %1 (%2)").arg(modCond->doorState).arg(modCond->doorState, 0, 16);
-    qCritical() << QString("modCond->doorWasOpened      %1 (%2)").arg(modCond->doorWasOpened).arg(modCond->doorWasOpened, 0, 16);
-    qCritical() << QString("modCond->changer            %1 (%2)").arg(modCond->changer).arg(modCond->changer, 0, 16);
-    qCritical() << QString("modCond->coinBlocker        %1 (%2)").arg(modCond->coinBlocker).arg(modCond->coinBlocker, 0, 16);
-
-    qCritical() << QString("modCond->billReader         %1 (%2)").arg(modCond->billReader).arg(modCond->billReader, 0, 16);
-    qCritical() << QString("modCond->ResetReason        %1 (%2)").arg(modCond->ResetReason).arg(modCond->ResetReason, 0, 16);
-    qCritical() << QString("modCond->allModulesChecked  %1 (%2)").arg(modCond->allModulesChecked).arg(modCond->allModulesChecked, 0, 16);
-    qCritical() << QString("modCond->alarmState         %1 (%2)").arg(modCond->alarmState).arg(modCond->alarmState, 0, 16);
-    qCritical() << QString("modCond->fuses              %1 (%2)").arg(modCond->fuses).arg(modCond->fuses, 0, 16);
-}
-
-static void dump(T_dynamicCondition const *dynCond) {
-    qCritical() << QString("dynCond->allDoorsDebounced      %1 (%2)").arg((unsigned char)dynCond->allDoorsDebounced).arg((unsigned char)dynCond->allDoorsDebounced, 0, 16);
-    qCritical() << QString("dynCond->openedAuthorized       %1 (%2)").arg((unsigned char)dynCond->openedAuthorized).arg((unsigned char)dynCond->openedAuthorized, 0, 16);
-    qCritical() << QString("dynCond->CBinDebounced          %1 (%2)").arg((unsigned char)dynCond->CBinDebounced).arg((unsigned char)dynCond->CBinDebounced, 0, 16);
-    qCritical() << QString("dynCond->upperDoor              %1 (%2)").arg((unsigned char)dynCond->upperDoor).arg((unsigned char)dynCond->upperDoor, 0, 16);
-    qCritical() << QString("dynCond->middleDoor             %1 (%2)").arg((unsigned char)dynCond->middleDoor).arg((unsigned char)dynCond->middleDoor, 0, 16);
-    qCritical() << QString("dynCond->lowerDoor              %1 (%2)").arg((unsigned char)dynCond->lowerDoor).arg((unsigned char)dynCond->lowerDoor, 0, 16);
-    qCritical() << QString("dynCond->middleDoor             %1 (%2)").arg((unsigned char)dynCond->middleDoor).arg((unsigned char)dynCond->middleDoor, 0, 16);
-    qCritical() << QString("dynCond->coinAttached           %1 (%2)").arg((unsigned char)dynCond->coinAttached).arg((unsigned char)dynCond->coinAttached, 0, 16);
-    qCritical() << QString("dynCond->billBox                %1 (%2)").arg((unsigned char)dynCond->billBox).arg((unsigned char)dynCond->billBox, 0, 16);
-    qCritical() << QString("dynCond->modeAbrech             %1 (%2)").arg((unsigned char)dynCond->modeAbrech).arg((unsigned char)dynCond->modeAbrech, 0, 16);
-    qCritical() << QString("dynCond->onAlarm                %1 (%2)").arg((unsigned char)dynCond->onAlarm).arg((unsigned char)dynCond->onAlarm, 0, 16);
-    qCritical() << QString("dynCond->nowCardTest            %1 (%2)").arg((unsigned char)dynCond->nowCardTest).arg((unsigned char)dynCond->nowCardTest, 0, 16);
-    qCritical() << QString("dynCond->nowPayment             %1 (%2)").arg((unsigned char)dynCond->nowPayment).arg((unsigned char)dynCond->nowPayment, 0, 16);
-    qCritical() << QString("dynCond->lastMifCardType        %1 (%2)").arg((unsigned char)dynCond->lastMifCardType).arg((unsigned char)dynCond->lastMifCardType, 0, 16);
-    qCritical() << QString("dynCond->lastSDoorState         %1 (%2)").arg(dynCond->lastSDoorState).arg(dynCond->lastSDoorState, 0, 16);
-    qCritical() << QString("dynCond->lastVDoorState         %1 (%2)").arg(dynCond->lastVDoorState).arg(dynCond->lastVDoorState, 0, 16);
-    qCritical() << QString("dynCond->lastCBstate            %1 (%2)").arg(dynCond->lastCBstate).arg(dynCond->lastCBstate, 0, 16);
-    qCritical() << QString("dynCond->paymentInProgress      %1 (%2)").arg((unsigned char)dynCond->paymentInProgress).arg((unsigned char)dynCond->paymentInProgress, 0, 16);
-    qCritical() << QString("dynCond->U_Batt                 %1 (%2)").arg(dynCond->U_Batt).arg(dynCond->U_Batt, 0, 16);
-    qCritical() << QString("dynCond->nrCoinsInBox           %1 (%2)").arg(dynCond->nrCoinsInBox).arg(dynCond->nrCoinsInBox, 0, 16);
-    qCritical() << QString("dynCond->amountInBox            %1 (%2)").arg(dynCond->amountInBox).arg(dynCond->amountInBox, 0, 16);
-    qCritical() << QString("dynCond->totalTransVolume       %1 (%2)").arg(dynCond->totalTransVolume).arg(dynCond->totalTransVolume, 0, 16);
-    qCritical() << QString("dynCond->totalNrOfVends         %1 (%2)").arg(dynCond->totalNrOfVends).arg(dynCond->totalNrOfVends, 0, 16);
-    qCritical() << QString("dynCond->resultOfLastTemplPrint %1 (%2)").arg((unsigned char)dynCond->resultOfLastTemplPrint).arg((unsigned char)dynCond->resultOfLastTemplPrint, 0, 16);
-    qCritical() << QString("dynCond->lastPrinterStatus      %1 (%2)").arg(dynCond->lastPrinterStatus).arg(dynCond->lastPrinterStatus, 0, 16);
-    qCritical() << QString("dynCond->startupTestIsRunning   %1 (%2)").arg(dynCond->startupTestIsRunning).arg(dynCond->startupTestIsRunning, 0, 16);
-    qCritical() << QString("dynCond->totalNrOfCuts          %1 (%2)").arg(dynCond->totalNrOfCuts).arg(dynCond->totalNrOfCuts, 0, 16);
-    qCritical() << QString("dynCond->nextAccountNumber      %1 (%2)").arg(dynCond->nextAccountNumber).arg(dynCond->nextAccountNumber, 0, 16);
-    qCritical() << QString("dynCond->nrOfBillsInBox         %1 (%2)").arg(dynCond->nrOfBillsInBox).arg(dynCond->nrOfBillsInBox, 0, 16);
-    qCritical() << QString("dynCond->UbatAtLastPrint        %1 (%2)").arg(dynCond->UbatAtLastPrint).arg(dynCond->UbatAtLastPrint, 0, 16);
-}
-
 char T_datif::loadRecDataFromFrame()
 {
     // is called even with wrong received data in order to speed up the process (stop waiting for response)
@@ -586,8 +513,6 @@ char T_datif::loadRecDataFromFrame()
         return 0;
     }
 
-    memset(receivedData, 0x00, sizeof(receivedData));
-
     ret=myDCIF->getReceivedInData(&SlaveAdr, &readSource, &readAddress,  &RdDleng, receivedData);
         // nur true wenn CommandState OK und readState OK
 
@@ -620,117 +545,6 @@ char T_datif::loadRecDataFromFrame()
 
     gpi_storeRecPayLoad(RdDleng, receivedData); //  save for host (user of hwapi)
 
-    if (myDCIF && myDCIF->getSerialPort()) {
-        uint32_t writeCount = myDCIF->getSerialPort()->getWriteCount();
-        if ((readCount + 1) == writeCount) { // there can be only one command sent to the DC
-            readCount = writeCount;
-            if (readSource != myDCIF->getReadSource()) {
-                qCritical() << __func__ << ":" << __LINE__ << ": ERROR length" << RdDleng << ", ignore data"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                qCritical() << __func__ << ":" << __LINE__ << "would be interpretated as" << readSource << myDCIF->getReadSource();
-                return 0;
-            } else {
-                // only for debugging
-                // qCritical() << __func__ << ":" << __LINE__ << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs) << readSource << myDCIF->getReadSource();
-                if (readSource == 30) {
-                    T_moduleCondition const *modCond = reinterpret_cast<T_moduleCondition const *>(receivedData);
-
-                    if(modCond->rtc >= 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E002 (modCond->rtc >= 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->printer == 200 || modCond->printer == 201) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E020 (modCond->printer == 200 || modCond->printer == 201)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->printer == 202) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E018 (modCond->printer == 202)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->coinBlocker >= 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E025 (modCond->coinBlocker >= 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->mdbBus >= 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E034 (modCond->mdbBus >= 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->intEe >= 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E011 (modCond->intEe >= 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->voltage >= 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E003 (modCond->voltage >= 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->changer >= 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E026 (modCond->changer >= 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->coinSafe == 201) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E007 (modCond->coinSafe == 201)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (modCond->coinSafe == 200) {
-                        dump(modCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E009 (modCond->coinSafe == 200)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                }
-
-                if (readSource == 31) {
-                    T_dynamicCondition const *dynCond = reinterpret_cast<T_dynamicCondition const *>(receivedData);
-
-                    if (dynCond->modeAbrech > 0) {
-                        dump(dynCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E011 (dynCond->modeAbrech > 0)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (dynCond->nowCardTest > 0) {
-                        dump(dynCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E072 (dynCond->nowCardTest > 0)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                    if (dynCond->startupTestIsRunning > 0) {
-                        dump(dynCond);
-                        qCritical() << __func__ << ":" << __LINE__ << ": ERROR E073 (dynCond->startupTestIsRunning > 0)"
-                            << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                    }
-                }
-            }
-        } else {
-            qCritical() << __func__ << ":" << __LINE__ << QString(": ERROR readCount + 1 != writeCount: %1 != %2").arg(readCount + 1).arg(writeCount);
-            qCritical() << __func__ << ":" << __LINE__ << ": ERROR length" << RdDleng << ", ignore data"
-                        << QByteArray((char const *)receivedData, RdDleng).toHex(':');
-            qCritical() << __func__ << ":" << __LINE__ << "would be interpretated as" << readSource << myDCIF->getReadSource();
-
-            if (readSource == 30) {
-                T_moduleCondition const *modCond = reinterpret_cast<T_moduleCondition const *>(receivedData);
-                dump(modCond);
-            }
-            if (readSource == 31) {
-                T_dynamicCondition const *dynCond = reinterpret_cast<T_dynamicCondition const *>(receivedData);
-                dump(dynCond);
-                if (dynCond->coinAttached > 0) {
-                    qCritical() << __func__ << ":" << __LINE__ << ": dynCond->coinAttached"
-                        << QByteArray(reinterpret_cast<char const *>(receivedData), RdDleng).toHex(':');
-                }
-            }
-
-            readCount = writeCount;
-            return 0;
-        }
-    }
-
     // uint8_t nn;
     //qDebug() << "\n datif: got valid data, rdsrc:" << readSource << "  rdadd:" << readAddress
      //        << "  rdlen:" << RdDleng;
@@ -1205,7 +1019,7 @@ char T_datif::loadRecDataFromFrame()
             uit2=0;
         }
 
-        if (uit2==3 || uit2==5 || uit2==10 || uit2==20  || uit2==40 || uit2==50 || uit2==100 || uit2==200 || uit2==500)
+        if (uit2==3 || uit2==5 || uit2==10 || uit2==20 || uit2==50 || uit2==100 || uit2==200 || uit2==500)
          {
             // valid coin
             if ((newInsertedAmount != lastInsertedAmount) || uit2>0 )

src/hwapi.cpp

@@ -11,12 +11,11 @@
 #include "hwapi.h"
 #include "download_thread.h"
 #include "reporting_thread.h"
+#include "storeINdata.h" // epi_loadSWVer, epi_loadHWVer
 
 #include <cstring>
 #include <QThread>
 #include <QDebug>
-#include <QFileSystemWatcher>
-#include <QSettings>
 
 
 static uint32_t hwapi_lastStartAmount;
@@ -27,6 +26,37 @@ static uint8_t  hwapi_lastDoorState;
 static uint8_t bl_startupStep;
 
 
+#ifdef THIS_IS_CA_MASTER
+#else // THIS_IS_CA_SLAVE
+    QString hwapi::getVersions() {
+        if (m_sharedMem != nullptr) {
+             // check if sw/hw-versions have been restored (see resetVersions()).
+             // emit a signal in such a case.
+             QString const &sw = epi_loadSWver(); // command 11
+             QString const &hw = epi_loadHWver(); // command 12
+             if (!sw.isEmpty() && !hw.isEmpty() && m_resetVersions) {
+                emit hwapi_restoredVersions();
+                return sw + " " + hw;
+             }
+        }
+        return "";
+    }
+
+    void hwapi::resetVersions() {
+        if (m_sharedMem != nullptr) {
+             // command 11 and 12 are included in the requests sent automatically,
+             // first 11, then 12. The results are used to refresh corresponding
+             // shared memory locations.
+             // set these locations to the empty string in the opposite order as
+             // the commands are sent.
+             // purpose: only when both locations are not empty again, we can be
+             // sure that data are not obsolete.
+             gpi_storeHWver(""); // command 12
+             gpi_storeSWver(""); // command 11
+             m_resetVersions = true;
+        }
+    }
+#endif
 
 hwapi::hwapi(QObject *parent) : QObject(parent)
 {
@@ -37,7 +67,6 @@ hwapi::hwapi(QObject *parent) : QObject(parent)
     qCritical() << "    hwapi::hwapi() APP_EXTENDED_VERSION:" << APP_EXTENDED_VERSION;
     qCritical() << "hwapi::hwapi() APP_EXTENDED_VERSION_LIB:" << APP_EXTENDED_VERSION_LIB;
 
-    m_fileSystemWatcher.reset();
 
     // create or attach shared memory segment
     m_sharedMem = SharedMem::getShm(sizeof(SharedMem));
@@ -59,21 +88,8 @@ hwapi::hwapi(QObject *parent) : QObject(parent)
 #error "SLAVE LIB COMPILED INTO MASTER"
 #endif
 
-        QSettings settings("/opt/app/ATBAPP/ATBQT.ini", QSettings::IniFormat);
+        myDatif = new T_datif();    // für die  CAslave-Lib auskommentieren!
-        m_watchedFile = settings.value("AsyncPOS_CCPlugin/terminal_watch_file",
-                                       "/run/powerctrl_cc").toString();
 
-        m_fileSystemWatcher.reset(new QFileSystemWatcher());
-        if (!m_fileSystemWatcher->addPath(m_watchedFile)) {
-            qCritical() << "cannot add path for" << m_watchedFile;
-        } else {
-            if (connect(m_fileSystemWatcher.get(), SIGNAL(fileChanged(QString const&)),
-                        this, SLOT(onCCWakeGpioChanged(QString const&)))) {
-                qCritical() << "connected file watcher with" << m_watchedFile;
-            }
-        }
-
-        myDatif = new T_datif(this);    // für die  CAslave-Lib auskommentieren!
 #endif
 
 #ifdef THIS_IS_CA_SLAVE
@@ -136,40 +152,6 @@ hwapi::hwapi(QObject *parent) : QObject(parent)
     connect(runProcess, SIGNAL(runProc_coinAttached()),                 this, SLOT(coinAttached()));
 }
 
-void hwapi::onCCWakeGpioChanged(QString const &fileName) {
-    if (fileName == m_watchedFile) {
-        qCritical() << __func__ << ":" << __LINE__ << " " << m_watchedFile;
-        QFile f(m_watchedFile);
-        if (f.exists() && f.open(QFile::ReadOnly | QFile::Text)) {
-            QTextStream stream(&f);
-            QString const &content = stream.readAll();
-            if (content.startsWith("0")) {
-                qCritical() << __func__ << ":" << __LINE__ << "switching cc-terminal off...";
-                credit_switchWake(false);
-                credit_switchPower(false);
-            } else
-            if (content.startsWith("1")) {
-                qCritical() << __func__ << ":" << __LINE__ << "switching cc-terminal on...";
-                credit_switchPower(true);
-                credit_switchWake(true);
-            } else
-            if (content.startsWith("2")) {
-                qCritical() << __func__ << ":" << __LINE__ << "switching cc-terminal off and on...";
-                credit_switchWake(false);
-                credit_switchPower(false);
-                QThread::sleep(1);
-                credit_switchPower(true);
-                credit_switchWake(true);
-            } else {
-                qCritical() << "switching cc-terminal watched file contained" << content;
-                QFile::resize(m_watchedFile, 0); // empty file
-            }
-        }
-    } else {
-        qCritical() << "ERROR watching the wrong file" << fileName << m_watchedFile;
-    }
-}
-
 void hwapi::hwapi_slotPayProc(void)
 {
 

src/prot.cpp

@@ -368,9 +368,6 @@ uint8_t recBuffer[FRAME_MAXLEN];
     // read from "VCP":
     mySerialPort->readFromSerial(Indata, recLength);
 //qDebug()<<"prot: got data " << recLength;
-
-    memset(recBuffer, 0x00, sizeof(recBuffer));
-
     if (recLength>FRAME_MAXLEN)
         recLength=FRAME_MAXLEN;
     for (int nn=0; nn<recLength; nn++)

src/storeINdata.cpp

@@ -6,6 +6,11 @@
 #include "shared_mem_buffer.h"
 #include "datei.h"
 
+#include <QMutex>
+#include <QMutexLocker>
+
+static QMutex SWHD_mutex;
+
 // gpi: grafical access to PI: access from external devices over device controller FOR GUI
 // epi: external access from GUI to PI:  FOR external devices (DC)
 
@@ -64,6 +69,7 @@ bool indat_isMdbOn()
 
 void gpi_storeHWver(QString text)
 {
+    QMutexLocker locker(&SWHD_mutex);
     // change Qstring to array of chars, because shared mem allowes no QString!
     int  nn, LL = text.length();
     if (LL >= versionBufferLen)
@@ -79,6 +85,7 @@ void gpi_storeHWver(QString text)
 
 QString epi_loadHWver(void)
 {
+    QMutexLocker locker(&SWHD_mutex);
     // load array of chars from SM and change to QString
     int  nn, LL = versionBufferLen;
     char cc;
@@ -96,6 +103,7 @@ QString epi_loadHWver(void)
 
 void gpi_storeSWver(QString text)
 {    
+    QMutexLocker locker(&SWHD_mutex);
     int  nn, LL = text.length();
     if (LL >= versionBufferLen)
         LL=versionBufferLen-1;   // leave place for termination
@@ -111,6 +119,7 @@ void gpi_storeSWver(QString text)
 
 QString epi_loadSWver(void)
 {
+    QMutexLocker locker(&SWHD_mutex);
     int  nn, LL = versionBufferLen;
     char cc;
     QString myStr;