Merge from master-branch

under /tmp.

CArunGUI/CArunGUI.pro

@@ -21,14 +21,15 @@ INCLUDEPATH += ../include
 win32 {
     BUILD_DATE=$$system("date /t")
     BUILD_TIME=$$system("time /t")
+    GIT_COMMIT=""
+    EXTENDED_VERSION=""
 } else {
     BUILD_DATE=$$system("date +%d-%m-%y")
     BUILD_TIME=$$system("date +%H:%M:%S")
+    GIT_COMMIT=$$system("git log -1 --format=oneline | cut -d' ' -f1")
+    EXTENDED_VERSION="$${VERSION}-$${GIT_COMMIT}"
 }
 
-GIT_COMMIT=$$system("git log -1 --format=oneline | cut -d' ' -f1")
-
-EXTENDED_VERSION="$${VERSION}-$${GIT_COMMIT}"
 
 DEFINES+=APP_VERSION=\\\"$$VERSION\\\"
 DEFINES+=APP_BUILD_DATE=\\\"$$BUILD_DATE\\\"

DCLibraries.pri

@@ -33,6 +33,8 @@ QMAKE_CXXFLAGS += -C
 QMAKE_CXXFLAGS += -O2 -O
 QMAKE_CXXFLAGS += -g
 QMAKE_CXXFLAGS += -Wno-deprecated-copy
+# QMAKE_CXXFLAGS += -fsanitize=address
+# QMAKE_CXXFLAGS += -fno-omit-frame-pointer
 
 QMAKE_LFLAGS += -Wl,-e,main
 

dCArun/dCArun.pro

@@ -25,15 +25,16 @@ INCLUDEPATH += ../include
 win32 {
     BUILD_DATE=$$system("date /t")
     BUILD_TIME=$$system("time /t")
+    GIT_COMMIT=""
+    EXTENDED_VERSION=""
 } else {
     BUILD_DATE=$$system("date +%d-%m-%y")
     BUILD_TIME=$$system("date +%H:%M:%S")
+
+    GIT_COMMIT=$$system("git log -1 --format=oneline | cut -d' ' -f1")
+    EXTENDED_VERSION="$${VERSION}-$${GIT_COMMIT}"
 }
 
-GIT_COMMIT=$$system("git log -1 --format=oneline | cut -d' ' -f1")
-
-EXTENDED_VERSION="$${VERSION}-$${GIT_COMMIT}"
-
 DEFINES+=APP_VERSION=\\\"$$VERSION\\\"
 DEFINES+=APP_BUILD_DATE=\\\"$$BUILD_DATE\\\"
 DEFINES+=APP_BUILD_TIME=\\\"$$BUILD_TIME\\\"

include/datIf.h

@@ -134,7 +134,8 @@
 
 
 
-
+class DownloadThread;
+class hwinf;
 class T_datif : public QObject
 {
     Q_OBJECT    
@@ -165,13 +166,14 @@ class T_datif : public QObject
     T_prot *myDCIF;
     QTimer *datif_trigger;
     uint8_t selectedSlaveAddr;
+    hwinf *m_hw = nullptr;
 
 private slots:
     char datif_cycleSend();
     void StoredRecData();
 
 public:
-    T_datif(QObject *parent = nullptr);
+    T_datif(hwinf *hw, QObject *parent = nullptr);
 
     void resetChain(void);
     char isPortOpen(void);

include/download_thread.h

@@ -0,0 +1,37 @@
+#ifndef DOWNLOAD_THREAD_H_INCLUDED
+#define DOWNLOAD_THREAD_H_INCLUDED
+
+#include <QThread>
+#include <QString>
+#include <QByteArray>
+
+class hwinf;
+class DownloadThread : public QThread {
+    Q_OBJECT
+
+public:
+    enum class DownloadResult {OK, ERROR, TIMEOUT, NOP};
+
+    DownloadThread(hwinf *hw);
+    ~DownloadThread();
+
+protected:
+    // download thread does not have a running event queue, and therefore
+    // no slots. signals work the usual way.
+    void run() override;
+
+private:
+    DownloadResult sendStatus(int ret) const;
+    DownloadResult sendNextAddress(int bNum) const;
+    DownloadResult sendNextDataBlock(QByteArray const &binary, int bNum) const;
+    bool startBootloader() const;
+    bool stopBootloader() const;
+    QByteArray loadBinaryDCFile(QString dcFileName) const;
+    bool resetDeviceController() const;
+    DownloadResult dcDownloadBinary(QByteArray const &b) const;
+
+    hwinf *m_hw;
+    QString m_fileToDownload;
+};
+
+#endif // DOWNLOAD_THREAD_H_INCLUDED

include/hwapi.h

@@ -80,7 +80,8 @@ V4.0  6.9.2023: activating DC-Bootloader in slve-lib (SM)
 
 
 class QSharedMemory;
-
+class DownloadThread;
+class ReportingThread;
 class hwapi :   public QObject,
                 public hwinf
 {
@@ -92,12 +93,13 @@ private:
     void sub_storeSendingText(QByteArray *buf) const;
     QTimer *hwapi_TimerPayment;
     QSharedMemory *m_sharedMem;
+    ReportingThread *m_reportingThread = nullptr;
+    DownloadThread *m_downloadThread = nullptr;
     //QTimer *hwapi_triggerBL;
 
 public:
     explicit hwapi(QWidget *parent = nullptr);
 
-
     #ifdef  THIS_IS_CA_MASTER
     T_datif *myDatif;
     #endif
@@ -1316,10 +1318,47 @@ public:
         // countOfBills: array of up to 16 sums,    countOfBills[0]=nr of 5€-bills in stacker
         //                                          countOfBills[1] for 10€   and so on
 
+    // download device controller
+    bool dcDownloadRequest(QString const &fileToDownload) const override;
+    bool dcDownloadRequested() const override;
+    bool dcDownloadResetRequest() const override;
+    bool dcDownloadRequestAck() const override;
+    bool dcDownloadRunning() const override;
+    bool dcDownloadFinished() override;
 
+    bool dcDownloadReportStart() const override;
+    bool dcDownloadReportRunning() const override;
+    bool dcDownloadReportFinished() override;
 
+    bool dcDownloadThreadStart() override;
+    bool dcDownloadThreadRunning() const override;
+    void dcDownloadThreadFinalize(DownloadThread *) override;
+    bool dcDownloadThreadFinished() const override;
+    bool dcDownloadReportThreadStart() override;
+    bool dcDownloadReportThreadRunning() const override;
+    void dcDownloadReportThreadFinalize() override;
+    void dcDownloadReportThreadQuit() override;
+    bool dcDownloadReportThreadFinished() const override;
+
+    QString dcDownloadFileName() const override;
+    bool dcDownloadSetRequested(bool) override;
+    bool dcDownloadSetRunning(bool) override;
+    bool dcDownloadSetFinished(bool) override;
+    void dcDownloadSetTotalBlockNumber(uint16_t totalBlockNumber) override;
+    void dcDownloadSetCurrentBlockNumber(uint16_t currentBlockNumber) override;
+    bool dcDownloadGetRequested() const override;
+    bool dcDownloadGetRunning() const override;
+    bool dcDownloadGetFinished() const override;
+    uint16_t dcDownloadGetTotalBlockNumber() const override;
+    uint16_t dcDownloadGetCurrentBlockNumber() const override;
+
+    virtual QObject const *getAPI() override;
 
 signals:
+    void hwapi_reportDCDownloadStatus(QString const&) const;
+    void hwapi_reportDCDownloadSuccess(QString const&) const;
+    void hwapi_reportDCDownloadFailure(QString const&) const;
+
     void hwapi_templatePrintFinished_OK(void) const override;
     void hwapi_templatePrintFinished_Err(void) const override;
 

include/interfaces.h

@@ -414,6 +414,7 @@ struct T_bna
 
 };
 
+class DownloadThread;
 class hwinf
 {
 
@@ -2299,9 +2300,73 @@ public:
     //                                          countOfBills[1] for 10€   and so on
 
 
+    // download device controller
+    virtual bool dcDownloadRequest(QString const &fileToDownload) const {
+        Q_UNUSED(fileToDownload);
+        return false;
+    }
+    virtual bool dcDownloadRequested() const { return false; }
+    virtual bool dcDownloadResetRequest() const { return false; }
+    virtual bool dcDownloadRequestAck() const { return false; }
+    virtual bool dcDownloadRunning() const { return false; }
+    virtual bool dcDownloadFinished() { return false; }
+
+    virtual bool dcDownloadReportStart() const { return false; }
+    virtual bool dcDownloadReportRunning() const { return true; }
+    virtual bool dcDownloadReportFinished() { return true; }
+
+    virtual bool dcDownloadThreadStart() { return false; }
+    virtual bool dcDownloadThreadRunning() const { return true; }
+    virtual void dcDownloadThreadFinalize(DownloadThread *) {}
+    virtual bool dcDownloadThreadFinished() const { return true; }
+    virtual bool dcDownloadReportThreadStart() { return false; }
+    virtual bool dcDownloadReportThreadRunning() const { return true; }
+    virtual void dcDownloadReportThreadFinalize() {}
+    virtual void dcDownloadReportThreadQuit() {}
+    virtual bool dcDownloadReportThreadFinished() const { return true; }
+
+
+    virtual QString dcDownloadFileName() const { return ""; }
+    virtual bool dcDownloadSetRequested(bool requested) {
+       Q_UNUSED(requested); return false;
+    }
+    virtual bool dcDownloadSetRunning(bool running) {
+       Q_UNUSED(running); return false;
+    }
+    virtual bool dcDownloadSetFinished(bool finished) {
+       Q_UNUSED(finished); return false;
+    }
+    virtual void dcDownloadSetTotalBlockNumber(uint16_t totalBlockNumber) {
+       Q_UNUSED(totalBlockNumber);
+    }
+    virtual void dcDownloadSetCurrentBlockNumber(uint16_t currentBlockNumber) {
+       Q_UNUSED(currentBlockNumber);
+    }
+    virtual bool dcDownloadGetRequested() const { return false; }
+    virtual bool dcDownloadGetRunning() const { return false; }
+    virtual bool dcDownloadGetFinished() const { return false; }
+    virtual uint16_t dcDownloadGetTotalBlockNumber() const { return 0; }
+    virtual uint16_t dcDownloadGetCurrentBlockNumber() const { return 0; }
+
+    virtual QObject const *getAPI() { return nullptr; }
 
 
 signals:
+    /*
+        NOTE: the difference between a virtual Qt signal and a normal Qt signal:
+        A Qt virtual signal is a connection that is established using a pointer
+        or reference and is not connected to an object or data. It is therefore
+        not bound to a particular object, but to a specific class (object type).
+        Qt virtual signals are useful because they allow you to create
+        connections without worrying about whether an object or a specific data
+        element has been destroyed.
+        https://www.youtube.com/watch?v=HTH3VFfqsXw
+
+     */
+    virtual void hwapi_reportDCDownloadStatus(QString const&) const {}
+    virtual void hwapi_reportDCDownloadSuccess(QString const&) const {}
+    virtual void hwapi_reportDCDownloadFailure(QString const&) const {}
+
     virtual void hwapi_templatePrintFinished_OK(void) const=0;
     virtual void hwapi_templatePrintFinished_Err(void) const=0;
 

include/reporting_thread.h

@@ -0,0 +1,35 @@
+#ifndef REPORTING_THREAD_H_INCLUDED
+#define REPORTING_THREAD_H_INCLUDED
+
+#include <QThread>
+#include <QString>
+// #include <functional>
+
+class hwapi;
+class ReportingThread : public QThread {
+    Q_OBJECT
+
+public:
+    ReportingThread(hwapi *hw);
+    ~ReportingThread();
+
+    //void setFunction(std::function<void(QString const&)> f) {
+    //    m_f = f;
+    //}
+
+    //std::function<void(QString const&)> function() {
+    //    return m_f;
+    //}
+
+protected:
+    // reporting thread does not have a running event queue, and therefore
+    // no slots. signals work the usual way.
+    void run() override;
+
+private:
+    hwapi *m_hw;
+    QString m_fileToDownload;
+    //std::function<void(QString const&)> m_f;
+};
+
+#endif // REPORTING_THREAD_H_INCLUDED

include/shared_mem_buffer.h

@@ -300,10 +300,31 @@ struct SharedMem
 
     uint8_t  p_nextFDcmdsInQueue;
 
+    // download of device controller and json files
+    struct DCDownload {
+        enum class FILE_INDEX {
+            DC_BINARY = 0, DC2C_CASH = 1, DC2C_CONF = 2, DC2C_SERIAL=3,
+            DC2C_PRINT_01, DC2C_PRINT_02, DC2C_PRINT_03, DC2C_PRINT_04,
+            DC2C_PRINT_05, DC2C_PRINT_06, DC2C_PRINT_07, DC2C_PRINT_08,
+            DC2C_PRINT_09, DC2C_PRINT_10, DC2C_PRINT_11, DC2C_PRINT_12,
+            DC2C_PRINT_13, DC2C_PRINT_14, DC2C_PRINT_15, DC2C_PRINT_16,
+            DC2C_PRINT_17, DC2C_PRINT_18, DC2C_PRINT_19, DC2C_PRINT_20,
+            DC2C_PRINT_21, DC2C_PRINT_22, DC2C_PRINT_23, DC2C_PRINT_24,
+            DC2C_PRINT_25, DC2C_PRINT_26, DC2C_PRINT_27, DC2C_PRINT_28,
+            DC2C_PRINT_29, DC2C_PRINT_30, DC2C_PRINT_31, DC2C_PRINT_32
+        };
+        char m_filename[(int)FILE_INDEX::DC2C_PRINT_32][512];
+        std::atomic_ushort m_totalBlocks;
+        std::atomic_ushort m_currentblockNumber;
+        std::atomic_bool m_requested{false};
+        std::atomic_bool m_running{false};
+        std::atomic_bool m_finished{false};
+    } m_downLoadDC;
 
-
+    // meta-data
-
+    char os_release[64];
-
+    char date_of_creation[32];
+    char creator[128]; // name of application plus pid
 
     static QSharedMemory *getShm(std::size_t s = 0);
 

include/shared_mem_buffer.h.new

@@ -0,0 +1,601 @@
+#ifndef SHARED_MEM_BUFFER_INCLUDED_H
+#define SHARED_MEM_BUFFER_INCLUDED_H
+
+#include <cinttypes>
+#include <atomic>
+
+#include <QSharedMemory>
+#include <QtGlobal>
+#include <QDebug>
+
+
+bool shdMem_firstUse(void);
+
+// Vorsicht: im shared memory ist kein QString erlaubt!!!!!!!!!!!!!!!!!!!!!!
+//    nur standard C Typen!!!!!!
+//    also auch kein QByteArray o.ä.
+
+// Vorsicht: Zugriffe auf Comport NICHT ins shared mem --> Absturz!!!!
+
+struct SharedMem
+{
+#ifndef QT_NO_DEBUG
+    char mem_guard_1;
+#endif
+
+    // ------------------ Comport Control --------------------------------
+    bool     rs_portIsOpen;
+    bool     AutoEmissionOn;
+    bool     Sdata_serialTestResult;
+    uint8_t  Sdata_pProtResultOk;
+    uint16_t Sdata_receivedDataLength;
+    uint8_t  Sdata_receivedDataBlock[64];
+    uint8_t  ndbs, pari, nsb, br;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_2;
+#endif
+
+    uint8_t  Sdata_lastResult;
+    uint8_t  Sdata_OverallResult;
+    bool     Sdata_startSV;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_3;
+#endif
+
+    // ------------------ Data INPUT --------------------------------
+
+    bool indat_savePrnPwr;
+    bool indat_saveMifPwr;
+    bool indat_MdbIsOn;
+    //QString indat_HWversion;
+    //QString indat_SWversion;
+    //QString indat_DCstate;
+
+    #define versionBufferLen   32
+    char indat_HWversion[versionBufferLen];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_4;
+#endif
+
+    char indat_SWversion[versionBufferLen];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_5;
+#endif
+
+    char indat_DCstate[versionBufferLen];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_6;
+#endif
+
+    struct Sdata
+    {
+        uint64_t slaveUID;
+        uint8_t UIDstr[8];
+    } Sdata;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_7;
+#endif
+
+    struct T_globTime
+    {
+        // Reihenfolge nicht vertauschen!!!!!
+        uint8_t     hour;
+        uint8_t     minute;
+        uint8_t     second;
+        uint8_t     Year;
+        uint8_t     Month;
+        uint8_t     DayOfMonth;
+        uint8_t     DayOfWeek;          // 1=monday...7
+        uint8_t     reserve1;
+
+        uint16_t     MinutesOfToday;
+        uint16_t     reserve2;
+
+        uint32_t     SecondsOfToday;
+
+        uint8_t      IsLeapyear;
+        uint8_t      nextLeap;
+        uint8_t      lastLeap;
+        uint8_t      hoursOfWeek;
+
+        uint16_t     minOfWeek;
+        uint16_t     hoursOfMonth;
+        uint16_t     minOfMonth;
+        uint16_t     dayOfYear;
+        uint16_t     hoursOfYear;
+        uint16_t     reserve3;
+
+        uint32_t     minOfYear;
+
+        uint8_t      squareOutMode;
+        uint8_t      free1;
+        uint16_t     reserve4;
+        uint32_t     minOfMillenium;
+        // bis hierher 44byts
+        uint32_t    free2;
+        uint32_t    free3;
+        uint32_t    free4;
+
+    } getGlobalTime;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_8;
+#endif
+
+    #define MAXNROF_AI              4
+    uint16_t   AI_val[MAXNROF_AI];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_9;
+#endif
+
+    #define MAXNROF_MEASURE         4
+    uint32_t   Sdata_measurement[MAXNROF_MEASURE];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_10;
+#endif
+
+    uint8_t di_doorSwitch;
+    uint8_t di_vaultSwitch;
+    uint8_t di_lockSwitch;
+    uint8_t di_opto;
+    uint8_t di_aux;
+    bool di_wakeFromPtu;
+    bool di_wakeFromMdb;
+    bool di_PrnReady;
+    bool di_CoinAttach;
+    bool di_CoinEscrowOpen;
+    bool di_mifCardTap;
+    bool di_wakeFromModem;
+    bool di_contactPwrOn;
+    bool di_mifarePwrOn;
+    bool di_rdbk_mdbTxd;
+    bool di_AuxPwrOn;
+    bool di_gsmPwrOn;
+    bool di_creditPwrOn;
+    bool di_printerPwrOn;
+    bool di_mdbPwrOn;
+    bool di_rejMot_home;
+    uint8_t di_npe_sensor;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_11;
+#endif
+
+    uint8_t do_mbdRxTst;
+    uint8_t do_motorBits;
+    uint8_t do_serialSwitch;
+    uint8_t do_ledsAndFan;
+    uint8_t do_laermUndRelay;
+    uint8_t do_ptuWake;
+    uint8_t do_auxPower;
+    uint8_t do_coinShutter;
+    uint8_t do_coinEscrow;
+    uint8_t do_printerPower;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_12;
+#endif
+
+    //#define NROFMIFSTATEBYTES   40
+    //uint8_t Sdata_MIF_STATE[NROFMIFSTATEBYTES];
+    uint8_t Sdata_MIF_DATA[64];
+    //uint8_t mif_cardType;
+    //uint8_t mif_cardHolder[8];
+    uint8_t Sdata_MIF_ATB[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_13;
+#endif
+
+    #define pi_prnStateArraySize    20
+    uint8_t Sdata_PRN_STATE[pi_prnStateArraySize];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_14;
+#endif
+
+    #define pi_prnFontArraySize     20
+    uint8_t Sdata_PRN_FONTS[pi_prnFontArraySize];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_15;
+#endif
+
+    bool Sdata_mdb_busRdy;
+    bool Sdata_mdb_V12on;
+    bool Sdata_mdb_V5on;
+
+    uint8_t Sdata_mdbNrOfRecData;
+    uint8_t Sdata_RecBuff[40];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_16;
+#endif
+
+    uint8_t Sdata_empNrOfsettings;
+    uint8_t Sdata_emp_settingsBuff[66];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_17;
+#endif
+
+    struct T_coin
+    {
+        uint8_t valid;
+        uint8_t signal;
+        uint8_t error;
+        uint8_t pad;
+        uint16_t value;
+    };
+
+    #define     MEMDEPTH_GOTCOINS       16
+    struct T_coin gotCoin[MEMDEPTH_GOTCOINS];
+    uint8_t ctr_gotCoin;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_18;
+#endif
+
+    uint8_t Sdata_NrOfDeviceSetting;
+    uint8_t Sdata_DeviceSettingBuff[66];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_19;
+#endif
+
+    uint8_t SizeMachineIDBuff;
+    uint8_t MachineIDBuff[66];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_20;
+#endif
+
+    uint32_t store_insertedAmount;
+    uint16_t store_lastCoinType[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_21;
+#endif
+
+    uint16_t store_lastCoinValue[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_22;
+#endif
+
+    uint8_t  p_lastCoin;
+    char     store_curPayNewCoin;
+
+    uint64_t stor_wakSrc;
+    uint8_t  stor_reason;
+
+    uint8_t store_rbDevParamLen;
+    uint8_t store_rbDevParams[66];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_23;
+#endif
+
+    uint8_t store_deviceCondLen;
+    uint8_t store_deviceCond[66];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_24;
+#endif
+
+    uint8_t store_machCondLen;
+    uint8_t store_machCond[66];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_25;
+#endif
+
+    uint8_t  store_DcBackupNrOfAccNr;
+    uint16_t store_DcBackupAccNr[16];    // z.Z. nur 8
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_26;
+#endif
+
+    #define PI_SIZOFVAULTRECORD    400
+    uint8_t store_gotNrBlocksOfVaultRec;
+    uint8_t store_vaultrecord[PI_SIZOFVAULTRECORD];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_27;
+#endif
+
+    uint32_t store_amount;
+    uint16_t store_nrOfCoins;
+
+    bool store_DcDataAreValid;
+
+    uint8_t storeDCdynPrinterData[64];
+    uint8_t DCdynPrinterDataActual;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_28;
+#endif
+
+    uint16_t store_DCNextAccountNumber;
+
+    uint16_t storeMifCardTypDataLen;
+    uint8_t  storeMcardTypData[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_29;
+#endif
+
+    // new from 6.9.23:
+    #define RAW_BL_DATALEN      150
+    uint8_t Sdata_rawData[RAW_BL_DATALEN];
+    uint8_t Sdata_LengthRawData;
+
+#define  numberOfJsons     36
+#define  versionStringLength    16
+    char    store_jsonVersion[versionStringLength][numberOfJsons];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_30;
+#endif
+
+    uint8_t Sdata_changeResult;
+    uint32_t Sdata_changedAmount;
+    uint8_t  store_tubeLev[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_31;
+#endif
+
+    uint8_t  store_bnaParameter[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_32;
+#endif
+
+    uint8_t  store_bnaCollect[8];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_33;
+#endif
+
+    uint8_t  store_bnaContent[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_34;
+#endif
+
+
+    // Mitteilung von Hwapi zu Datif:
+    bool    Sdata_coinPaymentNow;
+    bool    Sdata_bootloadingNow;
+
+
+    // ------------------ Data OUTPUT --------------------------------
+
+    // sendWRcmd.cpp
+    #define CMDSTACKDEPTH   16
+    uint16_t nextAsynchsendCmd0[CMDSTACKDEPTH];
+    uint8_t  nrOfCmdsInQueue;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_35;
+#endif
+
+    #define CMD4STACKDEPTH   8
+    uint16_t    nextAsynchsendCmd4[CMD4STACKDEPTH];
+    uint8_t     nextCmd4para1[CMD4STACKDEPTH];
+    uint8_t     nextCmd4para2[CMD4STACKDEPTH];
+    uint8_t     nextCmd4para3[CMD4STACKDEPTH];
+    uint8_t     nextCmd4para4[CMD4STACKDEPTH];
+    uint8_t     nrOfCmds4InQueue;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_36;
+#endif
+
+    #define CMD8STACKDEPTH   4
+    uint16_t  nextAsynchsendCmd8[CMD8STACKDEPTH];
+    uint8_t   nextCmd8para1[CMD8STACKDEPTH];
+    uint8_t   nextCmd8para2[CMD8STACKDEPTH];
+    uint16_t  nextCmd8para3[CMD8STACKDEPTH];
+    uint32_t  nextCmd8para4[CMD8STACKDEPTH];
+    uint8_t   nrOfCmds8InQueue;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_37;
+#endif
+
+    #define SENDASYDAT_BUFFSIZE     200
+    uint8_t sendAsynchDataBuf[SENDASYDAT_BUFFSIZE]; // no stack, only ONE buffer
+    uint8_t sendAsyDatLen;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_38;
+#endif
+
+    #define MDBSEND_BUFFSIZE    64
+    uint8_t     Sdata_mdbSendBuffer[MDBSEND_BUFFSIZE];
+    uint8_t     Sdata_mdbSendLen;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_39;
+#endif
+
+    uint8_t     prnDataParameters[4];
+    uint8_t     prnDataBufferUser;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_40;
+#endif
+
+
+    // ONE printer doc consists of 20 x 64 byte
+    #define MAXNROF_PRNBYTES   64
+    #define MAXNROF_PRNBLOCKS  20
+    char        Sdata_PRN_TEXT[MAXNROF_PRNBLOCKS][MAXNROF_PRNBYTES];
+    uint8_t     pPrnDataBuff;        // points to next PRINTER_BLOCK
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_41;
+#endif
+
+    //#define     FDCMD_STACKDEPTH    16      // up to 1024 byte
+    #define     FDCMD_STACKDEPTH    32      // up to 2048 byte
+    // header
+    uint8_t nextFDwrCmd[FDCMD_STACKDEPTH];
+    uint8_t nextFDrdCmd[FDCMD_STACKDEPTH];
+    uint8_t nextFDblkNr[FDCMD_STACKDEPTH];
+    uint8_t nextFDshort[FDCMD_STACKDEPTH];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_42;
+#endif
+
+    // short data
+    uint8_t  nextFDpara1[FDCMD_STACKDEPTH];
+    uint8_t  nextFDpara2[FDCMD_STACKDEPTH];
+    uint8_t  nextFDpara3[FDCMD_STACKDEPTH];
+    uint8_t  nextFDpara4[FDCMD_STACKDEPTH];
+    // long data:
+    uint8_t longFDlength[FDCMD_STACKDEPTH];
+    uint8_t longFDpara[FDCMD_STACKDEPTH][64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_43;
+#endif
+
+    uint8_t  p_nextFDcmdsInQueue;
+
+    // download of device controller and json files
+    struct DCDownload {
+        enum class FILE_INDEX {
+            DC_BINARY = 0, DC2C_CASH = 1, DC2C_CONF = 2, DC2C_SERIAL=3,
+            DC2C_PRINT_01, DC2C_PRINT_02, DC2C_PRINT_03, DC2C_PRINT_04,
+            DC2C_PRINT_05, DC2C_PRINT_06, DC2C_PRINT_07, DC2C_PRINT_08,
+            DC2C_PRINT_09, DC2C_PRINT_10, DC2C_PRINT_11, DC2C_PRINT_12,
+            DC2C_PRINT_13, DC2C_PRINT_14, DC2C_PRINT_15, DC2C_PRINT_16,
+            DC2C_PRINT_17, DC2C_PRINT_18, DC2C_PRINT_19, DC2C_PRINT_20,
+            DC2C_PRINT_21, DC2C_PRINT_22, DC2C_PRINT_23, DC2C_PRINT_24,
+            DC2C_PRINT_25, DC2C_PRINT_26, DC2C_PRINT_27, DC2C_PRINT_28,
+            DC2C_PRINT_29, DC2C_PRINT_30, DC2C_PRINT_31, DC2C_PRINT_32
+        };
+        char m_filename[(int)FILE_INDEX::DC2C_PRINT_32][512];
+        std::atomic_ushort m_totalBlocks;
+        std::atomic_ushort m_currentblockNumber;
+        std::atomic_bool m_requested{false};
+        std::atomic_bool m_running{false};
+        std::atomic_bool m_finished{false};
+    } m_downLoadDC;
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_44;
+#endif
+
+    // meta-data
+    char os_release[64];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_45;
+#endif
+
+    char date_of_creation[32];
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_46;
+#endif
+
+    char creator[128]; // name of application plus pid
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_47;
+#endif
+
+    static QSharedMemory *getShm(std::size_t s = 0);
+
+    static SharedMem *getData()
+    {
+        Q_ASSERT_X(getShm()->data() != nullptr, "pointer access", "nullptr");
+        return (SharedMem *)getShm()->data();
+    }
+
+    static SharedMem const *getDataConst()
+    {
+        Q_ASSERT_X(getShm()->data() != nullptr, "pointer access", "nullptr");
+        return (SharedMem const *)getShm()->data();
+    }
+
+//    static SharedMemBuffer *write()
+    static SharedMem *write()
+    {
+        Q_ASSERT_X(getShm()->data() != nullptr, "pointer access", "nullptr");
+        return (SharedMem *)getShm()->data();
+    }
+
+//    static SharedMemBuffer const *read()
+    static SharedMem const *read()
+    {
+        Q_ASSERT_X(getShm()->data() != nullptr, "pointer access", "nullptr");
+        return (SharedMem const *)getShm()->data();
+    }
+
+    bool thisIsTheFirstUse(void);
+
+
+#ifndef QT_NO_DEBUG
+    char mem_guard_0;
+#endif
+
+    static void check_mem_guards() {
+#ifndef QT_NO_DEBUG
+        static const char memcmp_array[48] = {0,};
+        char mem[48];
+
+        Q_ASSERT_X(getShm()->data() != nullptr, "pointer access", "nullptr");
+        SharedMem const *d = (SharedMem const *)getShm()->data();
+
+        mem[0] = d->mem_guard_0;
+        mem[1] = d->mem_guard_1; mem[2] = d->mem_guard_2; mem[3] = d->mem_guard_3;
+        mem[4] = d->mem_guard_4; mem[5] = d->mem_guard_5; mem[6] = d->mem_guard_6;
+        mem[7] = d->mem_guard_7; mem[8] = d->mem_guard_8; mem[9] = d->mem_guard_9;
+
+        mem[10] = d->mem_guard_10;
+        mem[11] = d->mem_guard_11; mem[12] = d->mem_guard_12; mem[13] = d->mem_guard_13;
+        mem[14] = d->mem_guard_14; mem[15] = d->mem_guard_15; mem[16] = d->mem_guard_16;
+        mem[17] = d->mem_guard_17; mem[18] = d->mem_guard_18; mem[19] = d->mem_guard_19;
+
+        mem[20] = d->mem_guard_20;
+        mem[21] = d->mem_guard_21; mem[22] = d->mem_guard_22; mem[23] = d->mem_guard_23;
+        mem[24] = d->mem_guard_24; mem[25] = d->mem_guard_25; mem[26] = d->mem_guard_26;
+        mem[27] = d->mem_guard_27; mem[28] = d->mem_guard_28; mem[29] = d->mem_guard_29;
+
+        mem[30] = d->mem_guard_30;
+        mem[31] = d->mem_guard_31; mem[32] = d->mem_guard_32; mem[33] = d->mem_guard_33;
+        mem[34] = d->mem_guard_34; mem[35] = d->mem_guard_35; mem[36] = d->mem_guard_36;
+        mem[37] = d->mem_guard_37; mem[38] = d->mem_guard_38; mem[39] = d->mem_guard_39;
+
+        mem[40] = d->mem_guard_40;
+        mem[41] = d->mem_guard_41; mem[42] = d->mem_guard_42; mem[43] = d->mem_guard_43;
+        mem[44] = d->mem_guard_44; mem[45] = d->mem_guard_45; mem[46] = d->mem_guard_46;
+        mem[47] = d->mem_guard_47;
+
+        if (memcmp(mem, memcmp_array, sizeof(memcmp_array))) {
+            qCritical() << QByteArray(mem, sizeof(memcmp_array)).toHex(':');
+            for (uint i = 0; i < sizeof(memcmp_array); ++i) {
+                fprintf(stderr, "%02d -> %02x", i, (unsigned char)mem[i]);
+            } fprintf(stderr, "\n");
+        }
+#endif
+    }
+
+};
+
+#endif // SHARED_MEM_BUFFER_INCLUDED_H

lib_ca_master/lib_ca_master.pro

@@ -1,19 +1,40 @@
 TEMPLATE = lib
 TARGET = CAmaster
-VERSION="1.0.0"
+VERSION="1.0.2"
 
 HEADERS += \
     ../include/com.h \
     ../include/datIf.h \
-    ../include/prot.h
+    ../include/prot.h \
+    ../include/download_thread.h
 
 SOURCES += \
     ../src/com.cpp \
     ../src/datIf.cpp \
-    ../src/prot.cpp
+    ../src/prot.cpp \
+    ../src/download_thread.cpp
 
 include(../DCLibraries.pri)
 
+win32 {
+    BUILD_DATE=$$system("date /t")
+    BUILD_TIME=$$system("time /t")
+    GIT_COMMIT=""
+    EXTENDED_VERSION=""
+    EXTENDED_VERSION_LIB=""
+} else {
+    BUILD_DATE=$$system("date +%d-%m-%y")
+    BUILD_TIME=$$system("date +%H:%M:%S")
+
+    GIT_COMMIT=$$system("git log -1 --format=oneline . | cut -d' ' -f1")
+    EXTENDED_VERSION_LIB="libCAmaster-$${VERSION}-$${GIT_COMMIT}"
+}
+
+DEFINES+=APP_VERSION=\\\"$$VERSION\\\"
+DEFINES+=APP_BUILD_DATE=\\\"$$BUILD_DATE\\\"
+DEFINES+=APP_BUILD_TIME=\\\"$$BUILD_TIME\\\"
+DEFINES+=APP_EXTENDED_VERSION=\\\"$$EXTENDED_VERSION\\\"
+DEFINES+=APP_EXTENDED_VERSION_LIB=\\\"$$EXTENDED_VERSION_LIB\\\"
 
 DEFINES+=THIS_IS_CA_MASTER
 DESTDIR=$${_PRO_FILE_PWD_}/../build

lib_ca_slave/lib_ca_slave.pro

@@ -1,9 +1,35 @@
 TEMPLATE = lib
 TARGET = CAslave
-VERSION="1.0.0"
+VERSION="1.0.2"
+
+HEADERS += \
+    ../include/reporting_thread.h
+
+SOURCES += \
+    ../src/reporting_thread.cpp
 
 include(../DCLibraries.pri)
 
+win32 {
+    BUILD_DATE=$$system("date /t")
+    BUILD_TIME=$$system("time /t")
+    GIT_COMMIT=""
+    EXTENDED_VERSION=""
+    EXTENDED_VERSION_LIB=""
+} else {
+    BUILD_DATE=$$system("date +%d-%m-%y")
+    BUILD_TIME=$$system("date +%H:%M:%S")
+
+    GIT_COMMIT=$$system("git log -1 --format=oneline . | cut -d' ' -f1")
+    EXTENDED_VERSION_LIB_="libCAslave-$${VERSION}-$${GIT_COMMIT}"
+}
+
+DEFINES+=APP_VERSION=\\\"$$VERSION\\\"
+DEFINES+=APP_BUILD_DATE=\\\"$$BUILD_DATE\\\"
+DEFINES+=APP_BUILD_TIME=\\\"$$BUILD_TIME\\\"
+DEFINES+=APP_EXTENDED_VERSION=\\\"$$EXTENDED_VERSION\\\"
+DEFINES+=APP_EXTENDED_VERSION_LIB=\\\"$$EXTENDED_VERSION_LIB\\\"
+
 DEFINES+=THIS_IS_CA_SLAVE
 DESTDIR=$${_PRO_FILE_PWD_}/../build
 

src/datIf.cpp

@@ -9,10 +9,14 @@ History:
 #include "sendWRcmd.h"
 #include "controlBus.h"
 #include "storeINdata.h"
+#include "download_thread.h"
+
+
 #include <QDebug>
 #include <datei.h>
 #include <QDir>
-
+#include <QString>
+#include <QDateTime>
 
 
 
@@ -54,8 +58,10 @@ static uint8_t datif_pNextCmd, datif_sendSlowCmd;
 //#define     DATIF_CTR_GOTRESPVAL        100
 
 
-T_datif::T_datif(QObject *parent) : QObject(parent)
+T_datif::T_datif(hwinf *hw, QObject *parent) : QObject(parent)
 {
+    m_hw = hw;
+
     QByteArray myBA;
     QDir myDir("../dmd");
 
@@ -170,10 +176,22 @@ char T_datif::datif_cycleSend()
     // b) Antwort meldet Fehler -> 2x wiederholen (nach einer Luecke von 10ms )
     // c) gar keine Antwort, Timeout nach 100ms -> 2x wiederholen (nach einer Luecke von 10ms )
     // cycl_running=0: nichts zu tun    1: Mitteilung: Kommando wurde soeben abgesendet, 2,3,4 = Wiederholung
-
+    if (cycl_running == 0) {
-    if (cycl_running)   // 21.9.23 doRepeat hier raus sonst gehts warten auch nicht mehr (BL)
+        if (m_hw) {
+            if (m_hw->dcDownloadRequested()) { // only happens in ca-master
+                qCritical() << "DOWNLOAD REQUESTED";
+                if (!m_hw->dcDownloadThreadStart()) {
+                    qCritical() << "DOWNLOAD-THREAD NOT RUNNING WITHIN 1000ms";
+                } else {
+                    qCritical() << "DOWNLOAD-THREAD RUNNING";
+                }
+                return 0;
+            }
+        }
+    } else {
+        // 21.9.23 doRepeat hier raus sonst gehts warten auch nicht mehr (BL)
         //   if (cycl_running && doRepeat)
-    {
+
         // request is still running, wait for response before next sending
         //qDebug()<< "datif wait for response";
         datif_trigger->stop();

src/download_thread.cpp

@@ -0,0 +1,440 @@
+#include "download_thread.h"
+#include "shared_mem_buffer.h"
+#include "hwapi.h"
+
+#include <QDebug>
+#include <QDateTime>
+
+
+DownloadThread::DownloadThread(hwinf *hw)
+  : m_hw(hw)
+  , m_fileToDownload(m_hw->dcDownloadFileName()) {
+    // connect(this, &QThread::finished,
+    //        dynamic_cast<QObject const *>(m_hw), &QThread::deleteLater);
+}
+
+DownloadThread::~DownloadThread() {
+}
+
+/*
+ ///////////////////////////////////////////////////////////////////////////////
+ //
+ //                        USING THE DC BOOTLOADER
+ //
+ ///////////////////////////////////////////////////////////////////////////////
+
+ 1  :   bl_reboot()     // send to application, want DC2 to reset (in order to
+                        // start the bootloader)
+                        //
+                        // NOTE: this function is NOT reliable !!! Sometimes it
+                        // simply does not work, in which case bl_startBL,
+                        // bl_checkBL and bl_isUp do not work as well.
+                        // Alas, there is no feedback if bl_reboot worked!
+                        //
+                        // NOTE: this function can be called only once per
+                        // minute, because once called again, the controller
+                        // performs some self-checks consuming some time.
+                        //
+                        // NOTE: after a successful bl_reboot(), the device is
+                        // waiting about 4 seconds in the bootloader. To stay in
+                        // the bootloader, we have to send the command
+                        // bl_startBL(), which is kind of a misnomer, as it
+                        // should be bl_doNotLeaveBL().
+                        //
+ 2  :   bl_startBL():   // send within 4s after DC power-on, otherwise
+                        // bootloader is left.
+                        //
+                        // NOTE: a running bootloader is a MUST for the download
+                        // process of a device controller firmware as it does
+                        // the actual writing of the memory (the bl_reboot()
+                        // from above erases the available memory).
+                        //
+ 3  :   bl_check():     // send command to verify if bl is up
+                        //
+                        // NOTE: this command is kind of a request that we want
+                        // to check if the bootloader is up. The device
+                        // (actually the bootloader) responds with its version.
+                        //
+ 4  :   bl_isUp():      // returns true if bl is up and running
+                        //
+                        // NOTE: we know what the bootloader version actually is
+                        // as the bootloader does not change. By comparing the
+                        // string received in the previous step with this known
+                        // version string we know if the bootloader is up.
+                        //
+                        // NOTE FOR ALL PREVIOUS STEPS: execute them in their
+                        // own slots each to be sure to receive any possible
+                        // responds from the device.
+                        //
+ 5  :   bl_sendAddress(blockNumber)
+                        // send start address, nr of 64-byte block, start with 0
+                        // will be sent only for following block-numbers:
+                        // 0, 1024, 2048, 3072 and 4096, so basically every
+                        // 64kByte.
+                        // for other addresses nothing happens
+
+ 6  :   bl_wasSendingAddOK()
+                        // return val:  0: no response by now
+                        //              1: error
+                        //             10: OK
+
+ 7  :   bl_sendDataBlock()
+                        // send 64 byte from bin file
+
+ 8  :   bl_sendLastBlock()
+                        // send this command after all data are transferred
+
+ 9  :   bl_wasSendingDataOK()
+                        // return val:  0: no response by now
+                        //              1: error
+                        //             10: OK
+
+ 10 :   bl_stopBL()     // leave bl and start (the new) application
+                        //
+                        // NOTE: this function MUST work under all conditions.
+                        // Alas, there is no direct result for this command, so
+                        // the only way of knowing it was successful is to ask
+                        // the device if the bootloader is still running.
+                        // There is no problem to repeat this command until the
+                        // bootloader is really not running anymore.
+ */
+void DownloadThread::run() {
+    // download thread running in ca-master sends the dc-file down to firmware
+    // TODO: send the json files as well
+
+    m_hw->dcDownloadRequestAck();
+
+    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                << "DownloadThread::run(): DOWNLOAD THREAD STARTED:";
+    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                << "               DownloadThread::run(): Filename:" << m_hw->dcDownloadFileName();
+
+    QDateTime const start = QDateTime::currentDateTime();
+
+#if 1
+    QFile fn(m_hw->dcDownloadFileName());
+
+    if (!fn.exists()) {
+        // output via CONSOLE() etc
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "               DownloadThread::run(): Filename:" << m_hw->dcDownloadFileName() << "DOES NOT EXIST";;
+    } else {
+
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "DownloadThread::run(): DC-CONTROLLER SW-VERSION BEFORE"
+                    << m_hw->dc_getSWversion();
+
+        // load binary device controller file into memory
+        QByteArray ba = loadBinaryDCFile(m_hw->dcDownloadFileName());
+        if (ba.size() > 0) {
+            uint16_t const totalBlocks = (((ba.size())%64)==0) ? (ba.size()/64) : (ba.size()/64)+1;
+            m_hw->dcDownloadSetTotalBlockNumber(totalBlocks);
+
+            // fill last block of data to be sent with 0xFF
+            ba = ba.leftJustified(totalBlocks*64, (char)(0xFF));
+
+            qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                        << "DownloadThread::run(): TOTAL NUMBER OF BYTES TO SEND TO DC" << ba.size();
+            qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                        << "DownloadThread::run(): TOTAL NUMBER OF BLOCKS" << totalBlocks;
+
+            m_hw->dc_autoRequest(true); // turn auto-request setting on
+
+            m_hw->request_DC2_HWversion();
+            m_hw->request_DC2_SWversion();
+            QThread::sleep(1);
+
+            // m_hw->dc_autoRequest(false); // turn auto-request setting on
+
+            resetDeviceController();
+
+            qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                        << "DownloadThread::run(): RESET DEVICE-CONTROLLER";
+
+            if (startBootloader()) {
+
+                qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                            << "DownloadThread::run(): STARTED BOOT-LOADER";
+
+                m_hw->dc_autoRequest(false);// turn auto-request setting off for
+                                            // download of binary dc
+
+                qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                            << "DownloadThread::run(): TOTAL NUMBER OF FIRMWARE BLOCKS" << totalBlocks;
+
+                int currentBlock = 0; // download of binary dc
+                DownloadResult res = DownloadResult::OK;
+
+                while (res != DownloadResult::ERROR &&  currentBlock < totalBlocks) {
+                    if ((res = sendNextAddress(currentBlock)) != DownloadResult::ERROR) {
+                        if ((res = sendNextDataBlock(ba, currentBlock)) != DownloadResult::ERROR) {
+                            m_hw->dcDownloadSetCurrentBlockNumber(currentBlock);
+
+                            qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                                        << "DownloadThread::run(): currentBlockNumber ..." << currentBlock;
+
+                            currentBlock += 1;
+                        }
+                    }
+                }
+
+                qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                            << QString("DownloadThread::run(): last 64-byte block %1").arg(currentBlock);
+
+                int const rest = ba.size() % 64;
+                int const offset = ba.size() - rest;
+                char const *startAddress = ba.constData() + offset;
+
+                if (rest > 0) {
+                    // SHOULD NEVER HAPPEN !!!
+                    uint8_t local[66];
+                    memset(local, 0xFF, sizeof(local));
+                    memcpy(local, startAddress, rest);
+                    qCritical() << "DownloadThread::run(): ERROR SEND REMAINING" << rest << "BYTES";
+                    m_hw->bl_sendDataBlock(64, local);
+                } else {
+                    m_hw->bl_sendLastBlock();
+                    m_hw->dcDownloadSetCurrentBlockNumber(currentBlock);
+
+                    qCritical() << "DownloadThread::run(): currentBlockNumber" << currentBlock;
+                    // QThread::msleep(250);
+                }
+                qCritical() << "DownloadThread::run(): last result" << (int)sendStatus(m_hw->bl_wasSendingDataOK());
+
+                stopBootloader();   // stop bootloader several times: if it
+                QThread::sleep(1);  // is not stopped, then the PSA has to be
+            }
+            // restarted manually (!!!)
+            stopBootloader();
+            QThread::sleep(1);
+        }
+
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "DownloadThread::run(): STOPPED BOOT-LOADER";
+
+        stopBootloader();   // there is no harm in stopping the bootloader even
+                            // if it was not started at all
+
+        m_hw->dc_autoRequest(true);
+    }
+
+#else // test
+    // load binary device controller file into memory
+    QByteArray ba = loadBinaryDCFile(m_hw->dcDownloadFileName());
+    if (ba.size() > 0) {
+        uint16_t const totalBlocks = (((ba.size())%64)==0) ? (ba.size()/64) : (ba.size()/64)+1;
+        m_hw->dcDownloadSetTotalBlockNumber(totalBlocks);
+
+        // fill last block of data to be sent with 0xFF
+        ba = ba.leftJustified(totalBlocks*64, (char)(0xFF));
+
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "DownloadThread::run(): TOTAL NUMBER OF BYTES TO SEND TO DC" << ba.size();
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "DownloadThread::run(): TOTAL NUMBER OF BLOCKS" << totalBlocks;
+
+        m_hw->dc_autoRequest(true); // turn auto-request setting on
+
+        m_hw->request_DC2_HWversion();
+        m_hw->request_DC2_SWversion();
+        QThread::sleep(1);
+
+        resetDeviceController();
+
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "DownloadThread::run(): RESET DEVICE-CONTROLLER";
+        QThread::sleep(1);
+
+        if (startBootloader()) {
+            qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                        << "DownloadThread::run(): STARTED BOOT-LOADER";
+
+            m_hw->dc_autoRequest(false);// turn auto-request setting off for
+                                        // download of binary dc
+            for (uint16_t currentBlock = 0; currentBlock <= totalBlocks; ++currentBlock) {
+                m_hw->dcDownloadSetCurrentBlockNumber(currentBlock);
+                qCritical() << "DownloadThread::run(): currentBlockNumber" << currentBlock;
+                QThread::msleep(250);
+            }
+            m_hw->dc_autoRequest(true); // turn auto-request setting on again
+        }
+
+        stopBootloader();   // there is no harm in stopping the bootloader even
+                            // if it was not started at all
+        qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "DownloadThread::run(): STOPPED BOOT-LOADER";
+    }
+#endif
+
+    m_hw->dcDownloadSetRunning(false);
+    m_hw->dcDownloadSetFinished(true);
+
+    QDateTime const end = QDateTime::currentDateTime();
+    quint64 secs = start.secsTo(end);
+    QString runtime;
+    if (secs % 60) {
+        runtime = QString("%1min %2s").arg(secs / 60).arg(secs % 60);
+    } else {
+        runtime = QString("%1min").arg((secs / 60) + 1);
+    }
+
+    qCritical() << end.time().toString(Qt::ISODateWithMs)
+                << QString("DOWNLOAD THREAD FINISHED (RUNTIME %1)")
+                   .arg(runtime);
+
+    // the object deletes itself ! This is the last line in run().
+    // Never touch the object after this statement
+    // m_hw->dcDownloadThreadFinalize(this);
+}
+
+DownloadThread::DownloadResult DownloadThread::sendStatus(int ret) const {
+    switch (ret) {                  // return values of dc are:
+    case 0:                         // 0: no answer by now
+        return DownloadResult::NOP; // 1: error
+    case 10:                        // 10: success
+        return DownloadResult::OK;
+    default:;
+    }
+    return DownloadResult::ERROR;
+}
+
+DownloadThread::DownloadResult
+DownloadThread::sendNextAddress(int bNum) const {
+    // sends address only if blockNumber is one of 0, 1024, 2048, 3072, 4096
+    int noAnswerCount = 0;
+    int errorCount = 0;
+    if ( bNum==0 || bNum==1024 || bNum==2048 || bNum==3072 || bNum==4096 ) {
+        while (noAnswerCount <= 250) {
+            m_hw->bl_sendAddress(bNum);
+            QThread::msleep(100);
+            DownloadResult const res = sendStatus(m_hw->bl_wasSendingAddOK());
+            if (res != DownloadResult::NOP) {
+                if (res == DownloadResult::ERROR) {
+                    if (++errorCount >= 10) {
+                        qCritical() << "addr-block" << bNum << "...FAILED";
+                        return res;
+                    }
+                } else { // res == DownloadResult::OK
+                    // qInfo() << "addr-block" << bNum << "...OK";
+
+                        // TODO: hier ins shared-mem schreiben
+
+                    return res;
+                }
+            } else {
+                noAnswerCount += 1; // no answer by now
+            }
+        }
+        // wait max. about 3 seconds
+        return DownloadResult::TIMEOUT;
+    }
+    // blockNumber is not one of 0, 1024, 2048, 3072, 4096 -> do nothing
+    return DownloadResult::NOP;
+}
+
+DownloadThread::DownloadResult
+DownloadThread::sendNextDataBlock(QByteArray const &binary, int bNum) const {
+    uint8_t local[66];
+    int const bAddr = bNum * 64;
+    int noAnswerCount = 0;
+    int errorCount = 0;
+
+    memcpy(local, binary.constData() + bAddr, 64);
+    local[64] = local[65] = 0x00;
+
+    while (noAnswerCount <= 250) {
+        m_hw->bl_sendDataBlock(64, local);
+        QThread::msleep(10);
+        DownloadResult const res = sendStatus(m_hw->bl_wasSendingDataOK());
+        if (res != DownloadResult::NOP) {
+            if (res == DownloadResult::ERROR) {
+                if (++errorCount >= 10) {
+                    qCritical() << "data for block" << bNum << "...FAILED";
+                    return res;
+                }
+            } else {
+                // qInfo() << "data for block" << bNum << "OK";
+                // TODO: hier ins shared mem schreiben
+                return res;
+            }
+        } else {
+            noAnswerCount += 1; // no answer by now
+        }
+    }
+    // wait max. about 3 seconds
+    return DownloadResult::TIMEOUT;
+}
+
+bool DownloadThread::startBootloader() const {
+    qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+             << "starting bootloader...";
+    int nTry = 5;
+    while (--nTry >= 0) {
+        m_hw->bl_startBL();
+        qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs) << "bl_startBL() ..." << nTry;
+        QThread::msleep(500);
+        m_hw->bl_checkBL();
+        qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs) << "bl_checkBL() ..." << nTry;
+        QThread::msleep(500);
+        if (m_hw->bl_isUp()) {
+            qInfo() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs) << "bootloader... isUP" << nTry;
+            return true;
+        } else {
+            qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                        << "bootloader not up (" << nTry << ")";
+        }
+    }
+    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                << "starting bootloader FAILED";
+    return false;
+}
+
+bool DownloadThread::stopBootloader() const {
+    qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+             << "stopping bootloader...";
+    int nTry = 5;
+    while (--nTry >= 0) {
+        m_hw->bl_stopBL();
+        qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                 << "bl_stopBL() ...";
+        QThread::msleep(500);
+        m_hw->bl_checkBL();
+        qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs) << "bl_checkBL() ..." << nTry;
+        if (!m_hw->bl_isUp()) {
+            qInfo() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                    << "stopping bootloader OK";
+            return true;
+        }
+    }
+    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+                << "stopping bootloader FAILED";
+    return false;
+}
+
+bool DownloadThread::resetDeviceController() const {
+    qDebug() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+             << "resetting device controller...";
+    m_hw->bl_rebootDC();
+    // wait maximally 3 seconds, before starting bootloader
+    QThread::sleep(1);
+    qInfo() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+            << "resetting device controller...OK";
+    return true;
+}
+
+QByteArray DownloadThread::loadBinaryDCFile(QString filename) const {
+    qInfo() << QDateTime::currentDateTime().time().toString(Qt::ISODateWithMs)
+            << "loading dc binary" << filename << "...";
+
+    QFile file(filename); // closed in destructor call
+    if (!file.exists()) {
+        qCritical() << file.fileName() << "does not exist";
+        return QByteArray();
+    }
+    if (!file.open(QIODevice::ReadOnly)) {
+        qCritical() << "cannot open file" << file.fileName();
+        return QByteArray();
+    }
+    qInfo() << "loading dc binary" << filename << "...OK";
+    return file.readAll();
+}

src/hwapi.cpp

@@ -20,6 +20,14 @@
 */
 
 #include "hwapi.h"
+#include "download_thread.h"
+#include "reporting_thread.h"
+#include "shared_mem_buffer.h"
+
+#include <cstring>
+#include <QThread>
+#include <QDebug>
+#include <QApplication>
 
 static uint32_t hwapi_lastStartAmount;
 static uint32_t hwapi_lastTotalAmount;
@@ -33,6 +41,12 @@ static uint8_t bl_startupStep;
 hwapi::hwapi(QWidget *parent) : QObject(parent)
 {
     // constructor
+    qCritical() << "             hwapi::hwapi() APP_VERSION:" << APP_VERSION;
+    qCritical() << "          hwapi::hwapi() APP_BUILD_DATE:" << APP_BUILD_DATE;
+    qCritical() << "          hwapi::hwapi() APP_BUILD_TIME:" << APP_BUILD_TIME;
+    qCritical() << "    hwapi::hwapi() APP_EXTENDED_VERSION:" << APP_EXTENDED_VERSION;
+    qCritical() << "hwapi::hwapi() APP_EXTENDED_VERSION_LIB:" << APP_EXTENDED_VERSION_LIB;
+
 
     // create or attach shared memory segment
     m_sharedMem = SharedMem::getShm(sizeof(SharedMem));
@@ -45,6 +59,11 @@ hwapi::hwapi(QWidget *parent) : QObject(parent)
         qCritical() << "Creating/attaching shared memory failed";
     }
 
+    Q_ASSERT_X(sizeof(SharedMem) == m_sharedMem->size(), "check shm-sizes",
+               QString("sizes different %1 != %2")
+                .arg(sizeof(SharedMem))
+                .arg(m_sharedMem->size()).toStdString().c_str());
+
     //if (shdMem_firstUse())        // für Master raus
 //    {
 
@@ -54,7 +73,7 @@ hwapi::hwapi(QWidget *parent) : QObject(parent)
 #error "SLAVE LIB COMPILED INTO MASTER"
 #endif
 
-        myDatif = new T_datif();    // für die  CAslave-Lib auskommentieren!
+        myDatif = new T_datif(this);    // für die  CAslave-Lib auskommentieren!
 
 #endif
 
@@ -2621,12 +2640,23 @@ void hwapi::bl_openBinary(void) const
 void hwapi::bl_sendDataBlock(uint8_t length, uint8_t *buffer) const
 {
     // send 64 byte from bin file
-    uint8_t LL=length, sendBuf[80], sendLen;
+    // gh, 09/02/2024: extend sendBuf. Buffer sometimes too small, sendLen=81
+    uint8_t LL=length, sendBuf[80+32], sendLen;
     if (LL>64) LL=64;
 
-    tslib_strclr(sendBuf,0,80);
+    memset(sendBuf, 0, sizeof(sendBuf));
     sendLen=dcBL_prepareDC_BLcmd(0x22, LL, buffer, sendBuf);   // pack into protocol frame
+
+    // qCritical() << "(" __func__ << ":" << __LINE__ << ") sendLen=" << sendLen
+    //             << ":" << QByteArray((const char *)sendBuf, sendLen);
+
     sendWRcmd_setSendBlock160(sendLen, sendBuf);                  // send 140 bytes
+
+    // if (sendLen > 80) {
+    //    qCritical() << "(" << __func__ << ":" << __LINE__ << ")"
+    //                << QByteArray((const char *)&sendBuf[80], 32).toHex(':');
+    // }
+
     delay(100);
 }
 
@@ -3319,22 +3349,15 @@ void hwapi::sys_restoreDeviceParameter(struct T_devices *deviceSettings) const
     // attention: only applies if function "sys_sendDeviceParameter()" was used to send this settings before
     //          cannot be used to see settings programmed by JsonFile
     uint8_t buf[64];
-    uint8_t LL, nn;
+    uint8_t LL;
     tslib_strclr(buf,0,64);
-    uint8_t *start;
 
     //runProcess->epi_restore64BdevParameter(&LL, buf); // wozu die???
     epi_restoreRbDeviceSettings(&LL, buf);      // viel besser, stimmt immer
 
-    // Puffer in struct eintragen:
+    Q_STATIC_ASSERT(sizeof(*deviceSettings) <= sizeof(buf));
-    start = &deviceSettings->kindOfPrinter;
-    nn=0;
-    do
-    {
-        *start = buf[nn];
-        start++;
-    } while(++nn<LL);
 
+    memcpy(deviceSettings, buf, sizeof(*deviceSettings));
 }
 
 bool hwapi::sys_areDCdataValid(void) const
@@ -4394,4 +4417,274 @@ uint16_t hwapi::bna_getStackerLevel(uint32_t *amountInStacker, uint16_t *countOf
     return anzahl;
 }
 
+QObject const *hwapi::getAPI() {
+    return this;
+}
 
+bool hwapi::dcDownloadRequest(QString const &dcFileToDownload) const {
+    // called by worker-thread (see atbupdatetool)
+    SharedMem *data = SharedMem::getData();
+    if (!data) {
+        return false;
+    }
+
+    char *fNameBuffer = data->m_downLoadDC.m_filename[(int)SharedMem::DCDownload::FILE_INDEX::DC_BINARY];
+    size_t const size = sizeof(data->m_downLoadDC.m_filename);
+
+    std::memset(fNameBuffer, 0x00, size);
+    std::memcpy(fNameBuffer, dcFileToDownload.toStdString().c_str(),
+                std::min(size, strlen(fNameBuffer)-1));
+
+    data->m_downLoadDC.m_totalBlocks = 0;
+    data->m_downLoadDC.m_currentblockNumber = 0;
+
+    data->m_downLoadDC.m_requested = true;
+    data->m_downLoadDC.m_running = false;   // download thread is not running
+    data->m_downLoadDC.m_finished = true;
+
+    return true;
+}
+
+bool hwapi::dcDownloadRequested() const {
+    SharedMem *data = SharedMem::getData();
+    Q_ASSERT_X(data != nullptr, "check", "pointer invalid");
+    Q_ASSERT_X((void *)data == m_sharedMem->data(), "compare pointers", "pointers different");
+    Q_ASSERT_X(sizeof(*data) == m_sharedMem->size(), "compare sizes", "sizes different");
+
+    // called by download-thread
+    // 1: true at entry: reset atomically to false
+    // 2: false at entry: no change
+    return data ? data->m_downLoadDC.m_requested.exchange(false) : false;
+}
+
+bool hwapi::dcDownloadResetRequest() const {
+    SharedMem *data = SharedMem::getData();
+    if (data) {
+        data->m_downLoadDC.m_requested = false;
+    }
+    return true;
+}
+
+bool hwapi::dcDownloadRequestAck() const {
+    // called by download-thread
+    SharedMem *data = SharedMem::getData();
+    if (data) {
+        data->m_downLoadDC.m_running = true;
+        data->m_downLoadDC.m_finished = false;
+    }
+    return false;
+}
+
+bool hwapi::dcDownloadRunning() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    if (data) {
+        int cnt = 10;
+        while (--cnt > 0) {
+            bool running = data->m_downLoadDC.m_running;
+            bool finished = data->m_downLoadDC.m_finished;
+            if ((running == true) && (finished == false)) {
+                // see dcDownloadRequestAck()
+                break;
+            }
+            if (cnt < 3) {
+                qCritical() << "DOWNLOAD THREAD NOT RUNNING" << running << finished;
+            }
+            QThread::msleep(500);
+        }
+        // qCritical() << "DOWNLOAD RUNNING" << cnt << (cnt > 0);
+        return (cnt > 0);
+    }
+    return false;
+}
+
+void hwapi::dcDownloadThreadFinalize(DownloadThread *dthread) {
+    Q_UNUSED(dthread);
+    // delete dthread;
+    m_downloadThread = nullptr;
+}
+
+bool hwapi::dcDownloadFinished() {
+    int cnt = 10;
+    while (dcDownloadRunning()) {
+        if (--cnt == 0) {
+            return false;
+        }
+
+        //if (cnt > 0) {
+        //    delete m_downloadThread;
+        //    m_downloadThread = nullptr;
+        //    return true;
+        //}
+    }
+    return true;
+}
+
+// download thread
+
+bool hwapi::dcDownloadThreadStart() {
+    // called by timer in datIf.cpp: T_datif::datif_cycleSend()
+    m_downloadThread = new DownloadThread(this);
+    if (m_downloadThread) {
+        m_downloadThread->start();
+        int cnt  = 10;
+        while (--cnt > 0 && !dcDownloadThreadRunning()) {
+            QThread::msleep(200);
+        }
+        return (cnt > 0);
+    }
+    return false;
+}
+
+bool hwapi::dcDownloadThreadRunning() const {
+    return (dcDownloadGetRunning() == true)
+        && (dcDownloadGetFinished() == false);
+}
+
+bool hwapi::dcDownloadThreadFinished() const {
+    return (dcDownloadThreadRunning() == false);
+}
+
+
+// report thread
+bool hwapi::dcDownloadReportThreadStart() { // only start reporting thread
+    int cnt = 10;                           // if download thread is running
+    while (--cnt > 0 && !dcDownloadRunning()) {
+        QThread::msleep(500);
+    }
+    if (cnt > 0) {
+        m_reportingThread = new ReportingThread(this);
+        if (m_reportingThread) {
+            m_reportingThread->moveToThread(QApplication::instance()->thread());
+            m_reportingThread->start();
+            cnt  = 10;
+            while (--cnt > 0 && !dcDownloadReportThreadRunning()) {
+                QThread::msleep(200);
+            }
+            return (cnt > 0);
+        }
+    }
+    return false;
+}
+
+bool hwapi::dcDownloadReportThreadRunning() const {
+    return m_reportingThread ? m_reportingThread->isRunning() : false;
+}
+
+void hwapi::dcDownloadReportThreadFinalize() {
+    if (m_reportingThread) {
+        if (m_reportingThread->isFinished()) {
+            delete m_reportingThread;
+            m_reportingThread = nullptr;
+        }
+    }
+}
+
+void hwapi::dcDownloadReportThreadQuit() {
+    if (m_reportingThread) {
+        m_reportingThread->quit();
+    }
+}
+
+bool hwapi::dcDownloadReportThreadFinished() const {
+    // if the pointer to the underlying c++-object is not valid, the thread
+    // counts as finished
+    return m_reportingThread ? m_reportingThread->isFinished() : true;
+}
+
+bool hwapi::dcDownloadReportStart() const {
+    int cnt = 10;
+    while (--cnt > 0 && !dcDownloadRunning()) {
+        QThread::msleep(200);
+    }
+    return (cnt == 0);
+}
+
+bool hwapi::dcDownloadReportRunning() const {
+    return dcDownloadReportThreadRunning();
+}
+
+bool hwapi::dcDownloadReportFinished() {
+    int cnt = 10;
+    while (--cnt > 0 && !dcDownloadReportThreadFinished()) {
+        QThread::sleep(1);
+    }
+
+    if (cnt == 0 && !dcDownloadReportThreadFinished()) {
+        return false;
+    }
+
+    if (dcDownloadReportThreadFinished()) {
+        if (m_reportingThread) {
+            delete m_reportingThread;
+            m_reportingThread = nullptr;
+        }
+    }
+
+    return true;
+}
+
+
+QString hwapi::dcDownloadFileName() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    return data ? data->m_downLoadDC.m_filename[(int)SharedMem::DCDownload::FILE_INDEX::DC_BINARY] : "";
+}
+
+bool hwapi::dcDownloadSetRequested(bool requested) {
+    SharedMem *data = SharedMem::getData();
+    if (data) {
+        data->m_downLoadDC.m_requested = requested;
+        return true;
+    }
+    return false;
+}
+
+bool hwapi::dcDownloadSetRunning(bool running) {
+    SharedMem *data = SharedMem::getData();
+    if (data) {
+        data->m_downLoadDC.m_running = running;
+        return true;
+    }
+    return false;
+}
+
+bool hwapi::dcDownloadSetFinished(bool finished) {
+    SharedMem *data = SharedMem::getData();
+    if (data) {
+        data->m_downLoadDC.m_finished = finished;
+        return true;
+    }
+    return false;
+}
+
+void hwapi::dcDownloadSetTotalBlockNumber(uint16_t totalBlockNumber) {
+    SharedMem::getData()->m_downLoadDC.m_totalBlocks = totalBlockNumber;
+}
+
+void hwapi::dcDownloadSetCurrentBlockNumber(uint16_t currentBlockNumber) {
+    SharedMem::getData()->m_downLoadDC.m_currentblockNumber = currentBlockNumber;
+}
+
+uint16_t hwapi::dcDownloadGetTotalBlockNumber() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    return data ? data->m_downLoadDC.m_totalBlocks.load() : 0;
+}
+
+uint16_t hwapi::dcDownloadGetCurrentBlockNumber() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    return data ? data->m_downLoadDC.m_currentblockNumber.load() : 0;
+}
+
+bool hwapi::dcDownloadGetRequested() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    return data ? data->m_downLoadDC.m_requested.load() : 0;
+}
+
+bool hwapi::dcDownloadGetRunning() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    return data ? data->m_downLoadDC.m_running.load() : 0;
+}
+
+bool hwapi::dcDownloadGetFinished() const {
+    SharedMem const *data = SharedMem::getDataConst();
+    return data ? data->m_downLoadDC.m_running.load() : 0;
+}

src/main.cpp

@@ -18,11 +18,11 @@ int main(int argc, char *argv[])
 #include <stdio.h>
 
 // Must define the interpreter to be the dynamic linker
-#ifdef __LP64__
+//#ifdef __LP64__
-#error "__LP64__ not defined for PTU5"
+//#error "__LP64__ not defined for PTU5"
-#else
+//#else
-const char service_interp[] __attribute__((section(".interp"))) = "/lib/ld-linux-armhf.so.3";
+//const char service_interp[] __attribute__((section(".interp"))) = "/lib/ld-linux-armhf.so.3";
-#endif
+//#endif
 
 
 int main(int argc, char *argv[]) {

src/reporting_thread.cpp

@@ -0,0 +1,210 @@
+#include "reporting_thread.h"
+#include "shared_mem_buffer.h"
+#include "hwapi.h"
+
+#include <QDateTime>
+#include <QDebug>
+#include <QApplication>
+#include <QCoreApplication>
+
+#include <cmath>
+#include <algorithm>
+
+ReportingThread::ReportingThread(hwapi *hw)
+  : m_hw(hw)
+  , m_fileToDownload(m_hw->dcDownloadFileName()) {
+  // , m_f([](QString const&){}) {
+}
+
+ReportingThread::~ReportingThread() {
+}
+
+// download thread running in ca-slave sends reports of download process to
+// each component which has connects for the corresponding signals.
+void ReportingThread::run() {
+
+    qCritical()
+        << QDateTime::currentDateTime().time().toString(Qt::ISODate)
+        << "START REPORT THREAD"
+        << "(PART OF APPLICATION" << QCoreApplication::applicationName() << ")";
+
+    static QString report("");
+
+    int cnt = 5;
+    while (!m_hw->dcDownloadGetRunning()) {
+        if (--cnt > 0) {
+            report =  QString("%1 waiting for download to start %2")
+                            .arg(QDateTime::currentDateTime().time().toString(Qt::ISODate))
+                            .arg(cnt);
+            qCritical() << "(" << __func__ << ":" << __LINE__ << ") STATUS" << report;
+            emit m_hw->hwapi_reportDCDownloadStatus(report);
+            QThread::sleep(1);
+        } else break;
+    }
+
+#if 0
+    if (cnt == 0) {
+        m_hw->dcDownloadResetRequest();
+        status = QString("%1 reset download request")
+                        .arg(QDateTime::currentDateTime().toString(Qt::ISODate));
+        qCritical() << __LINE__ << "STATUS" << status;
+        emit m_hw->hwapi_reportDCDownloadStatus(status);
+
+        cnt = 5;
+        while (!m_hw->dcDownloadRunning()) {
+            if (--cnt > 0) {
+                QThread::sleep(1);
+            } else break;
+        }
+
+        if (cnt == 0) {
+            status = QString("%1 download request failure")
+                            .arg(QDateTime::currentDateTime().toString(Qt::ISODate));
+            qCritical() << __LINE__ << "STATUS" << status;
+            emit m_hw->hwapi_reportDCDownloadFailure(status);
+            return;
+        }
+    }
+
+    uint16_t const tnr = 1750;
+    uint16_t cnr = 0;
+
+    while (cnr <= tnr) {
+        QThread::msleep(100);
+        QString report("");
+
+        if (cnr > 0) {
+            double percent = ((double)cnr / (double)tnr) * 100.0;
+            report = QString(": total blocks %1, current block %2 [%3]")
+                    .arg(tnr).arg(cnr).arg(percent, 0, 'f', 2);
+        } else {
+            report = QString(": total blocks %1, current block %2 [0]")
+                    .arg(tnr).arg(cnr);
+        }
+        status = QDateTime::currentDateTime().toString(Qt::ISODate) + report;
+
+        qCritical() << "STATUS" << status;
+
+        emit m_hw->hwapi_reportDCDownloadStatus(status);
+        cnr += 1;
+    }
+
+    if (tnr == cnr) {
+        m_hw->hwapi_reportDCDownloadSuccess(
+            QString("SUCCESS DOWNLOADING") + m_fileToDownload);
+    } else {
+        m_hw->hwapi_reportDCDownloadFailure(
+            QString("ERROR DOWNLOADING %1 (total blocks=%2, sent blocks=%3)")
+                .arg(m_fileToDownload).arg(tnr).arg(cnr));
+    }
+
+#endif
+
+    uint16_t totalBlocks = m_hw->dcDownloadGetTotalBlockNumber();
+    cnt = 10;
+    while(--cnt > 0 && totalBlocks == 0) {
+        totalBlocks = m_hw->dcDownloadGetTotalBlockNumber();
+        qCritical() << QDateTime::currentDateTime() << __PRETTY_FUNCTION__
+                    << QString("line=%1 TOTAL BLOCKS=%2 (%3)")
+                        .arg(__LINE__).arg(totalBlocks).arg(cnt);
+        QThread::sleep(1);
+    }
+
+    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODate) << __PRETTY_FUNCTION__
+                << QString("line=%1 TOTAL BLOCKS=%2").arg(__LINE__).arg(totalBlocks);
+
+    if (totalBlocks) {
+        QDateTime const start = QDateTime::currentDateTime();
+        uint16_t currentBlockNumber = 0;
+        uint16_t prevBlockNumber = ~0;
+        uint64_t estimatedMinutesLeftMax = ~0ULL;
+        uint64_t estimatedSecondsLeftMax = ~0ULL;
+        uint64_t estimatedMinutesLeftPrev = 0;
+        uint64_t estimatedSecondsLeftPrev = 0;
+
+        while (m_hw->dcDownloadGetRunning()) {
+            currentBlockNumber = m_hw->dcDownloadGetCurrentBlockNumber();
+            if (prevBlockNumber != currentBlockNumber) {
+                double durationSecs = start.secsTo(QDateTime::currentDateTime());
+
+                double const timeAveragePerBlock = (currentBlockNumber > 0) ? (durationSecs / currentBlockNumber) : durationSecs;
+                uint64_t estimatedSecondsLeft = lround((timeAveragePerBlock * (totalBlocks - currentBlockNumber)));
+                uint64_t estimatedMinutesLeft =
+                    ((estimatedSecondsLeft % 60) == 0) ?
+                        (estimatedSecondsLeft / 60) :
+                            ((estimatedSecondsLeft + 60) / 60);
+
+                estimatedSecondsLeft = (estimatedSecondsLeft % 60);
+
+                if ((estimatedMinutesLeft <= estimatedMinutesLeftMax)
+                 || (estimatedSecondsLeft <= estimatedSecondsLeftMax)) {
+                    estimatedMinutesLeftMax = estimatedMinutesLeft;
+                    estimatedSecondsLeftMax = estimatedSecondsLeft;
+                    estimatedMinutesLeftPrev = estimatedMinutesLeft;
+                    estimatedSecondsLeftPrev = estimatedSecondsLeft;
+
+                    double percent = ((double)currentBlockNumber / (double)totalBlocks) * 100.0;
+                    report = QString(": total blocks %1, current block %2 [%3] (est. time left: %4min %5s)")
+                                .arg(totalBlocks)
+                                .arg(currentBlockNumber)
+                                .arg(percent, 0, 'f', 2)
+                                .arg(estimatedMinutesLeft)
+                                .arg(estimatedSecondsLeft, 2);
+
+                    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODate)
+                                << QString("line=%1: RT report").arg(__LINE__) << report;
+
+                    emit m_hw->hwapi_reportDCDownloadStatus(report);
+
+                } else {
+                    double percent = ((double)currentBlockNumber / (double)totalBlocks) * 100.0;
+                    report = QString(": total blocks %1, current block %2 [%3] (est. time left: %4min %5s)")
+                                .arg(totalBlocks)
+                                .arg(currentBlockNumber)
+                                .arg(percent, 0, 'f', 2)
+                                .arg(estimatedMinutesLeftPrev)
+                                .arg(estimatedSecondsLeftPrev, 2);
+
+                    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODate)
+                                << QString("line=%1: RT report").arg(__LINE__) << report;
+
+                    emit m_hw->hwapi_reportDCDownloadStatus(report);
+                }
+
+                prevBlockNumber = currentBlockNumber;
+            }
+            QThread::msleep(100);
+        }
+
+        QThread::msleep(100);
+
+        if (totalBlocks == currentBlockNumber) {
+            m_hw->hwapi_reportDCDownloadSuccess(
+                QString("SUCCESS DOWNLOADING") + m_fileToDownload);
+        } else {
+            m_hw->hwapi_reportDCDownloadFailure(
+                QString("ERROR DOWNLOADING %1 (total blocks=%2, sent blocks=%3)")
+                    .arg(m_fileToDownload).arg(totalBlocks).arg(currentBlockNumber));
+        }
+    }
+
+    qCritical() << QDateTime::currentDateTime().time().toString(Qt::ISODate) << __PRETTY_FUNCTION__
+                << QString("line=%1 REPORT THREAD ABOUT TO FINISH").arg(__LINE__);
+
+    cnt = 10;
+
+    bool running = m_hw->dcDownloadGetRunning();
+    bool finished = m_hw->dcDownloadGetFinished();
+
+    while (--cnt > 0 && (running && !finished)) {
+        qCritical() << QDateTime::currentDateTime() << __PRETTY_FUNCTION__
+                    << QString("line=%1 REPORT THREAD: WAIT FOR END OF DOWNLOAD THREAD %2 %3 (%4)")
+            .arg(__LINE__).arg(running).arg(finished).arg(cnt);
+        QThread::sleep(1);
+        running = m_hw->dcDownloadGetRunning();
+        finished = m_hw->dcDownloadGetFinished();
+    }
+
+    qCritical() << QDateTime::currentDateTime() << __PRETTY_FUNCTION__
+                << QString("line=%1 FINISH REPORT THREAD").arg(__LINE__);
+}

src/runProc.cpp

@@ -641,8 +641,11 @@ void T_runProc::bl_rebootDC(void)
     // BL is working for 5s after power-on-reset.
 
     uint8_t len, buf[20];
+    memset(buf, 0x00, sizeof(buf));
 
     len=dcBL_restartDC(buf);
+
+    qCritical() << __func__ << QByteArray((const char *)buf, len).toHex(':');
     sendWRcmd_setSendBlock160(len, buf);
 }
 
@@ -652,8 +655,13 @@ void T_runProc::bl_startBL(void)
     // otherwise the BL jumps to normal DC application
     uint8_t len, buf[20];
 
+    memset(buf, 0x00, sizeof(buf));
+
     len=dcBL_activatBootloader(buf);
+
+    qCritical() << __func__ << QByteArray((const char *)buf, len).toHex(':');
     sendWRcmd_setSendBlock160(len, buf);
+
     epi_setNowIsBootload(true);
 }
 
@@ -661,8 +669,11 @@ void T_runProc::bl_checkBL(void)
 {
     // call this function in order to get information, afterwards use "bl_isUp()"
     uint8_t len, buf[20];
+    memset(buf, 0x00, sizeof(buf));
 
     len=dcBL_readFWversion(buf);
+
+    qCritical() << __func__ << QByteArray((const char *)buf, len).toHex(':');
     sendWRcmd_setSendBlock160(len, buf);
 }
 
@@ -673,6 +684,7 @@ bool T_runProc::bl_isUp(void)
 
     for (nn=0; nn<160; nn++) receivedData[nn]=0;
     LL=epi_getRawRecLength();
+
     if (LL>0)
     {
         epi_getRawReceivedData(receivedData);
@@ -685,15 +697,26 @@ bool T_runProc::bl_isUp(void)
             //epi_clrRawReceivedString();
             return true;
         }
-        // response to "start BL"
+
-        if (receivedData[0]==2 && receivedData[1]==101 && receivedData[2]==48 &&
+        // response to "start BL"     {   2,  101,   48,  223,  131,    3}
-            receivedData[3]==223 && receivedData[4] ==131 )
+        static uint8_t const cmp[6] = {0x02, 0x65, 0x30, 0xdf, 0x83, 0x03};
-        {
+
-            qDebug() << "hwapi_bl_isUp: got BL response to start";
+        if (LL >= 6 && LL <= 13) {
-            //epi_clrRawReceivedString();
+            // (1) "02:63:34:35:62:33:03:02:65:30:df:83:03"
+            // (2) "02:65:30:df:83:03"
+
+            // qCritical() << "(" << __func__ << ":" << __LINE__
+            //             << ") CHECK" << QByteArray((char const*)receivedData, LL).toHex(':');
+
+            for (int i=0; i <= LL-6; ++i) {
+                if (memcmp(cmp, &receivedData[i], 6) == 0) {
+                    qCritical() << "(" << __func__ << ":" << __LINE__
+                                << ") BL RESPONSE to bl_start(): BOOTLOADER IS UP";
                     return true;
                 }
             }
+        }
+    }
     return false;
 }
 

src/shared_mem_buffer.cpp

@@ -1,7 +1,13 @@
 #include "shared_mem_buffer.h"
 
 #include <QDebug>
+#include <QFile>
+#include <QString>
+#include <QTextStream>
+#include <QDateTime>
+#include <QCoreApplication>
 #include <atomic>
+#include <algorithm>
 
 #ifdef QT_POSIX_IPC
     // The POSIX backend can be explicitly selected using the -feature-ipc_posix
@@ -9,33 +15,124 @@
     // macro will be defined. -> we use SystemV shared memory
 #error "QT_POSIX_IPC defined"
 #else
-#ifdef __linux__
+#ifdef linux
+#include <stdlib.h>
+#include <string.h>
 #include <sys/ipc.h>    // ftok
 #endif
 #endif
 
 //static bool shdMemFirstUse;
 
+static QString read1stLineOfFile(QString fileName) { // read for instance /etc/os-release
+    QFile f(fileName);
+    if (f.exists()) {
+        if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+            QTextStream in(&f);
+            in.setCodec("UTF-8");
+            while(!in.atEnd()) {
+                return in.readLine();
+            }
+        }
+    }
+    return "N/A";
+}
+
 
 //QSharedMemory *SharedMemBuffer::getShm(std::size_t size) {
 QSharedMemory *SharedMem::getShm(std::size_t size) {
     static QSharedMemory shMem;
     if (size > 0) {
-#ifdef __linux__
+#ifdef linux
-        //static const long nativeKey = ftok("/etc/os-release", 'H');
+        static const long nativeKey = ftok("/etc/os-release", 'H');
-        //static const QString fkey = std::to_string(nativeKey).c_str();
+        static const QString fkey = std::to_string(nativeKey).c_str();
-        static const QString fkey = "0123456?000=7";
+        //static const QString fkey = "0123456?000=7";
 #else
         static const QString fkey = "0123456?000=9";
 #endif
 
+        qCritical() << __func__ << ":" << __LINE__ << ": size" << size;
+
         shMem.setKey(fkey);
         if (!shMem.isAttached()) {
             if (shMem.create(size)) {
+                qCritical() << __func__ << ":" << __LINE__ << ": created shared memory";
+
+#ifdef linux
+                if ((size != (std::size_t)shMem.size()) || (sizeof(SharedMem) != shMem.size())) {
+                    qCritical() << __func__ << ":" << __LINE__
+                                << "size=" << size
+                                << "shMem.size=" << shMem.size()
+                                << "sizeof(SharedMem)=" << sizeof(SharedMem)
+                                << "ABOUT TO REBOOT SYSTEM...";
+                    if (system("reboot")) {
+                        // reboot system -> shared memory re-created
+                    }
+                }
+
+                struct SharedMem *sh = (SharedMem *)(shMem.data());
+
+                memset(sh->indat_HWversion, 0x00, sizeof(sh->indat_HWversion));
+                memset(sh->indat_SWversion, 0x00, sizeof(sh->indat_SWversion));
+
+                memset(sh->os_release, 0x00, sizeof(sh->os_release));
+                memset(sh->date_of_creation, 0x00, sizeof(sh->date_of_creation));
+                memset(sh->creator, 0x00, sizeof(sh->creator));
+
+                QString const &os_release = read1stLineOfFile("/etc/os-release");
+                strncpy(sh->os_release, os_release.toStdString().c_str(),
+                        std::min((int)os_release.size(), (int)sizeof(sh->os_release)-1));
+
+                QString const &currentDateTime = QDateTime::currentDateTime().toString(Qt::ISODate);
+                char const *current = currentDateTime.toUtf8().constData();
+                strncpy(sh->date_of_creation, current,
+                        std::min((int)strlen(current), (int)sizeof(sh->date_of_creation)-1));
+
+                QString const &appPid = QString("%1 (%2)").arg(QCoreApplication::applicationName())
+                                                          .arg(QCoreApplication::applicationPid());
+
+                strncpy(sh->creator, appPid.toStdString().c_str(),
+                        std::min((int)strlen(appPid.toStdString().c_str()),
+                                 (int)sizeof(sh->creator)-1));
+
+                qCritical() << "os-release:" << sh->os_release;
+                qCritical() << "   creator:" << sh->creator;
+                qCritical() << "      date:" << sh->date_of_creation;
+
+#else
+                Q_ASSERT_X(size != shMem.size(), "compare sizes", "sizes different");
+                Q_ASSERT_X(sizeof(SharedMem) != shMem.size(), "compare sizes", "sizes different");
+#endif
                 return &shMem;
             } else {
                 if (shMem.error() == QSharedMemory::AlreadyExists) {
                     if (shMem.attach()) {
+#ifdef linux
+                        if ((size != (std::size_t)shMem.size()) || (sizeof(SharedMem) != shMem.size())) {
+                            qCritical() << __func__ << ":" << __LINE__
+                                        << "size=" << size
+                                        << "shMem.size=" << shMem.size()
+                                        << "sizeof(SharedMem)=" << sizeof(SharedMem)
+                                        << "ABOUT TO REBOOT SYSTEM...";
+                            if (system("reboot")) {
+                                // reboot system -> shared memory re-created
+                            }
+                        }
+#else
+                        Q_ASSERT_X(size != shMem.size(), "compare sizes", "sizes different");
+                        Q_ASSERT_X(sizeof(SharedMem) != shMem.size(), "compare sizes", "sizes different");
+#endif
+
+                        QString const &appPid = QString("%1 (%2)").arg(QCoreApplication::applicationName())
+                                                                  .arg(QCoreApplication::applicationPid());
+
+                        qCritical() << __func__ << ":" << __LINE__ << appPid << "attached shared memory";
+
+                        struct SharedMem const *sh = (SharedMem const *)(shMem.data());
+                        qCritical() << "os-release:" << sh->os_release;
+                        qCritical() << "   creator:" << sh->creator;
+                        qCritical() << "      date:" << sh->date_of_creation;
+
                         return &shMem;
                     }
                 }
@@ -43,6 +140,13 @@ QSharedMemory *SharedMem::getShm(std::size_t size) {
             qCritical() << shMem.nativeKey() << shMem.key() << shMem.data()
                         << shMem.error() << shMem.errorString();
             return nullptr;
+        } else {
+            qCritical() << __func__ << ":" << __LINE__ << "shared memory already attached";
+
+            struct SharedMem const *sh = (SharedMem const *)(shMem.data());
+            qCritical() << "os-release:" << sh->os_release;
+            qCritical() << "   creator:" << sh->creator;
+            qCritical() << "      date:" << sh->date_of_creation;
         }
     }
     return &shMem;

src/shared_mem_buffer.cpp.new

@@ -0,0 +1,232 @@
+#include "shared_mem_buffer.h"
+
+#include <QDebug>
+#include <QFile>
+#include <QString>
+#include <QTextStream>
+#include <QDateTime>
+#include <QCoreApplication>
+#include <atomic>
+#include <algorithm>
+
+#ifdef QT_POSIX_IPC
+    // The POSIX backend can be explicitly selected using the -feature-ipc_posix
+    // option to the Qt configure script. If it is enabled, the QT_POSIX_IPC
+    // macro will be defined. -> we use SystemV shared memory
+#error "QT_POSIX_IPC defined"
+#else
+#ifdef linux
+#include <stdlib.h>
+#include <string.h>
+#include <sys/ipc.h>    // ftok
+#endif
+#endif
+
+//static bool shdMemFirstUse;
+
+static QString read1stLineOfFile(QString fileName) { // read for instance /etc/os-release
+    QFile f(fileName);
+    if (f.exists()) {
+        if (f.open(QIODevice::ReadOnly | QIODevice::Text)) {
+            QTextStream in(&f);
+            in.setCodec("UTF-8");
+            while(!in.atEnd()) {
+                return in.readLine();
+            }
+        }
+    }
+    return "N/A";
+}
+
+
+//QSharedMemory *SharedMemBuffer::getShm(std::size_t size) {
+QSharedMemory *SharedMem::getShm(std::size_t size) {
+    static QSharedMemory shMem;
+    if (size > 0) {
+#ifdef linux
+        static const long nativeKey = ftok("/etc/os-release", 'H');
+        static const QString fkey = std::to_string(nativeKey).c_str();
+        //static const QString fkey = "0123456?000=7";
+#else
+        static const QString fkey = "0123456?000=9";
+#endif
+
+        qCritical() << __func__ << ":" << __LINE__ << ": size" << size;
+
+        shMem.setKey(fkey);
+        if (!shMem.isAttached()) {
+            if (shMem.create(size)) {
+                qCritical() << __func__ << ":" << __LINE__ << ": created shared memory";
+
+#ifdef linux
+                if ((size != (std::size_t)shMem.size()) || (sizeof(SharedMem) != shMem.size())) {
+                    qCritical() << __func__ << ":" << __LINE__
+                                << "size=" << size
+                                << "shMem.size=" << shMem.size()
+                                << "sizeof(SharedMem)=" << sizeof(SharedMem)
+                                << "ABOUT TO REBOOT SYSTEM...";
+                    if (system("reboot")) {
+                        // reboot system -> shared memory re-created
+                    }
+                }
+
+                struct SharedMem *sh = (SharedMem *)(shMem.data());
+
+#ifndef QT_NO_DEBUG
+                sh->mem_guard_0 = 0;
+                sh->mem_guard_1 = 0; sh->mem_guard_2 = 0; sh->mem_guard_3 = 0;
+                sh->mem_guard_4 = 0; sh->mem_guard_5 = 0; sh->mem_guard_6 = 0;
+                sh->mem_guard_7 = 0; sh->mem_guard_8 = 0; sh->mem_guard_9 = 0;
+
+                sh->mem_guard_10 = 0;
+                sh->mem_guard_11 = 0; sh->mem_guard_12 = 0; sh->mem_guard_13 = 0;
+                sh->mem_guard_14 = 0; sh->mem_guard_15 = 0; sh->mem_guard_16 = 0;
+                sh->mem_guard_17 = 0; sh->mem_guard_18 = 0; sh->mem_guard_19 = 0;
+
+                sh->mem_guard_20 = 0;
+                sh->mem_guard_21 = 0; sh->mem_guard_22 = 0; sh->mem_guard_23 = 0;
+                sh->mem_guard_24 = 0; sh->mem_guard_25 = 0; sh->mem_guard_26 = 0;
+                sh->mem_guard_27 = 0; sh->mem_guard_28 = 0; sh->mem_guard_29 = 0;
+
+                sh->mem_guard_30 = 0;
+                sh->mem_guard_31 = 0; sh->mem_guard_32 = 0; sh->mem_guard_33 = 0;
+                sh->mem_guard_34 = 0; sh->mem_guard_35 = 0; sh->mem_guard_36 = 0;
+                sh->mem_guard_37 = 0; sh->mem_guard_38 = 0; sh->mem_guard_39 = 0;
+
+                sh->mem_guard_40 = 0;
+                sh->mem_guard_41 = 0; sh->mem_guard_42 = 0; sh->mem_guard_43 = 0;
+                sh->mem_guard_44 = 0; sh->mem_guard_45 = 0; sh->mem_guard_46 = 0;
+                sh->mem_guard_47 = 0;
+#endif
+
+                memset(sh->indat_HWversion, 0x00, sizeof(sh->indat_HWversion));
+                memset(sh->indat_SWversion, 0x00, sizeof(sh->indat_SWversion));
+
+                memset(sh->os_release, 0x00, sizeof(sh->os_release));
+                memset(sh->date_of_creation, 0x00, sizeof(sh->date_of_creation));
+                memset(sh->creator, 0x00, sizeof(sh->creator));
+
+                QString const &os_release = read1stLineOfFile("/etc/os-release");
+                strncpy(sh->os_release, os_release.toStdString().c_str(),
+                        std::min((int)os_release.size(), (int)sizeof(sh->os_release)-1));
+
+                QString const &currentDateTime = QDateTime::currentDateTime().toString(Qt::ISODate);
+                char const *current = currentDateTime.toUtf8().constData();
+                strncpy(sh->date_of_creation, current,
+                        std::min((int)strlen(current), (int)sizeof(sh->date_of_creation)-1));
+
+                QString const &appPid = QString("%1 (%2)").arg(QCoreApplication::applicationName())
+                                                          .arg(QCoreApplication::applicationPid());
+
+                strncpy(sh->creator, appPid.toStdString().c_str(),
+                        std::min((int)strlen(appPid.toStdString().c_str()),
+                                 (int)sizeof(sh->creator)-1));
+
+                qCritical() << "os-release:" << sh->os_release;
+                qCritical() << "   creator:" << sh->creator;
+                qCritical() << "      date:" << sh->date_of_creation;
+
+#else
+                Q_ASSERT_X(size != shMem.size(), "compare sizes", "sizes different");
+                Q_ASSERT_X(sizeof(SharedMem) != shMem.size(), "compare sizes", "sizes different");
+#endif
+                return &shMem;
+            } else {
+                if (shMem.error() == QSharedMemory::AlreadyExists) {
+                    if (shMem.attach()) {
+#ifdef linux
+                        if ((size != (std::size_t)shMem.size()) || (sizeof(SharedMem) != shMem.size())) {
+                            qCritical() << __func__ << ":" << __LINE__
+                                        << "size=" << size
+                                        << "shMem.size=" << shMem.size()
+                                        << "sizeof(SharedMem)=" << sizeof(SharedMem)
+                                        << "ABOUT TO REBOOT SYSTEM...";
+                            if (system("reboot")) {
+                                // reboot system -> shared memory re-created
+                            }
+                        }
+#else
+                        Q_ASSERT_X(size != shMem.size(), "compare sizes", "sizes different");
+                        Q_ASSERT_X(sizeof(SharedMem) != shMem.size(), "compare sizes", "sizes different");
+#endif
+
+                        QString const &appPid = QString("%1 (%2)").arg(QCoreApplication::applicationName())
+                                                                  .arg(QCoreApplication::applicationPid());
+
+                        qCritical() << __func__ << ":" << __LINE__ << appPid << "attached shared memory";
+
+                        struct SharedMem const *sh = (SharedMem const *)(shMem.data());
+                        qCritical() << "os-release:" << sh->os_release;
+                        qCritical() << "   creator:" << sh->creator;
+                        qCritical() << "      date:" << sh->date_of_creation;
+
+                        return &shMem;
+                    }
+                }
+            }
+            qCritical() << shMem.nativeKey() << shMem.key() << shMem.data()
+                        << shMem.error() << shMem.errorString();
+            return nullptr;
+        } else {
+            qCritical() << __func__ << ":" << __LINE__ << "shared memory already attached";
+
+            struct SharedMem const *sh = (SharedMem const *)(shMem.data());
+            qCritical() << "os-release:" << sh->os_release;
+            qCritical() << "   creator:" << sh->creator;
+            qCritical() << "      date:" << sh->date_of_creation;
+        }
+    }
+    return &shMem;
+}
+
+
+// std::atomic_bool SharedMemBuffer::__sharedMemLocked{false};
+/*
+//QSharedMemory *SharedMemBuffer::getShm(std::size_t size) {
+QSharedMemory *SharedMem::getShm(std::size_t size) {
+
+    static QSharedMemory shMem;
+    if (size > 0) {
+#ifdef __linux__
+        static const long nativeKey = ftok("/etc/os-release", 'H');
+        static const QString fkey = std::to_string(nativeKey).c_str();
+#else
+        static const QString fkey = "0123456?000=9";
+#endif
+        shdMemFirstUse=false;
+        shMem.setKey(fkey);
+        if (!shMem.isAttached())
+        {
+            if (shMem.create(size))
+            {
+                //  sm was created successful, did not exist before
+                shdMemFirstUse=true;
+                return &shMem;
+            } else
+            {
+                // create was false because mem already existed
+                if (shMem.error() == QSharedMemory::AlreadyExists)
+                {
+                    if (shMem.attach())
+                    {
+                        return &shMem;
+                    }
+                }
+            }
+            qCritical() << shMem.nativeKey() << shMem.key() << shMem.data()
+                        << shMem.error() << shMem.errorString();
+            return nullptr;
+        }
+    }
+    return &shMem;
+}
+
+
+bool shdMem_firstUse(void)
+{
+    return shdMemFirstUse;
+}
+*/
+
+
+

src/storeINdata.cpp

@@ -6,12 +6,15 @@
 #include "shared_mem_buffer.h"
 #include "datei.h"
 
+#include <QTextCodec>
+
 // 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)
 
 
 
 
+
 // store power on/off condition of the devices to control the data request
 
 //static bool indat_savePrnPwr;
@@ -63,66 +66,64 @@ bool indat_isMdbOn()
 
 void gpi_storeHWver(QString text)
 {
-    // change Qstring to array of chars, because shared mem allowes no QString!
+    QString prev(QByteArray(SharedMem::read()->indat_HWversion, versionBufferLen-1));
-    int  nn, LL = text.length();
+    prev = prev.trimmed();
-    if (LL >= versionBufferLen)
-        LL=versionBufferLen-1;   // leave place for termination
 
-    for (nn=0; nn<LL; nn++)
+    QString const textTruncated = text.mid(0, qMin(versionBufferLen-1, text.size())).trimmed();
-    {
+
-        SharedMem::write()->indat_HWversion[nn] = text.at(nn).toLatin1();
+    if (textTruncated.startsWith("DC2C", Qt::CaseInsensitive)
+     && textTruncated != prev) {
+        QTextCodec *codec = QTextCodec::codecForName("Windows-1252");
+        QString string = codec->toUnicode(textTruncated.toUtf8());
+        if (!string.isEmpty()) {
+            memset(SharedMem::write()->indat_HWversion, 0, versionBufferLen);
+            char *p = (char *)SharedMem::write()->indat_HWversion;
+            char *q = (char *)string.constData();
+            for (int i=0; i < qMin(versionBufferLen, string.size()); ++i) {
+                int const j = (sizeof(QChar) == 2) ? i*2 : i;
+                if (q[j]) {
+                    *p++ = q[j];
+                }
+            }
+        }
     }
-    for (nn=LL; nn<versionBufferLen; nn++)
-        SharedMem::write()->indat_HWversion[nn] =0;
 }
 
 QString epi_loadHWver(void)
 {
-    // load array of chars from SM and change to QString
+    QString text(SharedMem::read()->indat_HWversion);
-    int  nn, LL = versionBufferLen;
+    return text.mid(0, qMin(versionBufferLen-1, text.size())).trimmed();
-    char cc;
-    QString myStr;
-
-    myStr.clear();
-
-    for (nn=0; nn<LL; nn++)
-    {
-        cc = SharedMem::read()->indat_HWversion[nn];
-        myStr.append(cc);
-    }
-    return myStr;
 }
 
 void gpi_storeSWver(QString text)
 {
-    int  nn, LL = text.length();
+    QString prev(QByteArray(SharedMem::read()->indat_SWversion, 12));
-    if (LL >= versionBufferLen)
+    prev = prev.trimmed();
-        LL=versionBufferLen-1;   // leave place for termination
 
-    for (nn=0; nn<LL; nn++)
+    QString const textTruncated = text.mid(0, qMin(12, text.size())).trimmed();
-    {
+
-        SharedMem::write()->indat_SWversion[nn] = text.at(nn).toLatin1();
+    if (textTruncated.startsWith("DC2C", Qt::CaseInsensitive)
+     && textTruncated != prev) {
+        QTextCodec *codec = QTextCodec::codecForName("Windows-1252");
+        QString string = codec->toUnicode(textTruncated.toUtf8());
+        if (!string.isEmpty()) {
+            memset(SharedMem::write()->indat_SWversion, 0, versionBufferLen);
+            char *p = (char *)SharedMem::write()->indat_SWversion;
+            char *q = (char *)string.constData();
+            for (int i=0; i < qMin(versionBufferLen, string.size()); ++i) {
+                int const j = (sizeof(QChar) == 2) ? i*2 : i;
+                if (q[j]) {
+                    *p++ = q[j];
+                }
+            }
+        }
     }
-    for (nn=LL; nn<versionBufferLen; nn++)
-        SharedMem::write()->indat_SWversion[nn] =0;
-
 }
 
 QString epi_loadSWver(void)
 {
-    int  nn, LL = versionBufferLen;
+    QString text(SharedMem::read()->indat_SWversion);
-    char cc;
+    return text.mid(0, qMin(12, text.size())).trimmed();
-    QString myStr;
-
-    myStr.clear();
-
-    for (nn=0; nn<LL; nn++)
-    {
-        cc = SharedMem::read()->indat_SWversion[nn];
-        myStr.append(cc);
-    }
-    return myStr;
-
 }
 
 void gpi_storeDCstate(QString text)
@@ -2202,8 +2203,8 @@ void gpi_storeRawReceivedData(uint8_t  RdDlen, uint8_t *receivedData)
     SharedMem::write()->Sdata_LengthRawData=lrd;
     for (nn=0; nn<lrd; nn++)
         SharedMem::write()->Sdata_rawData[nn]=receivedData[nn];
-    //qDebug()<<"dcBL got data"<<  Sdata_LengthRawData << "bytes :)";
 
+    //qDebug()<<"dcBL got data"<<  Sdata_LengthRawData << "bytes :)";
 }
 
 uint8_t epi_getRawReceivedData(uint8_t *receivedData)