Implement helpers:

virtual void dcDownloadStart() {}^M
virtual bool dcDownloadRequested() const { return false; }^M
virtual void dcDownloadResetRequest() {}^M
virtual QString dcDownloadFileName() const { return ""; }^M
virtual void dcDownloadReportStart() {}^M

include/datIf.h

@@ -133,8 +133,8 @@
 #define SENDCOMBINED            0
 
 
-
-
+class hwinf;
+class DownloadThread;
 class T_datif : public QObject
 {
     Q_OBJECT    
@@ -165,13 +165,15 @@ class T_datif : public QObject
     T_prot *myDCIF;
     QTimer *datif_trigger;
     uint8_t selectedSlaveAddr;
+    DownloadThread *m_downloadThread;
+    hwinf *m_hw;
 
 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

@@ -9,7 +9,7 @@ class DownloadThread : public QThread {
     Q_OBJECT
 
 public:
-    DownloadThread(hwinf *hw, QString const &fileToDownload);
+    DownloadThread(hwinf *hw);
     ~DownloadThread();
 
 protected:

include/hwapi.h

@@ -1307,8 +1307,11 @@ public:
 
     // download device controller
     void dcDownloadInit(QString const &fileToDownload) override;
-    void dcDownloadStart(QString const &fileToDownload) override;
-    void dcDownloadReportStart(QString const &fileToDownload) override;
+    void dcDownloadStart() override;
+    bool dcDownloadRequested() const override;
+    QString dcDownloadFileName() const override;
+    void dcDownloadResetRequest() override;
+    void dcDownloadReportStart() override;
     bool dcDownloadStarted() const override;
     bool dcDownloadRunning() const override;
     bool dcDownloadFinished() const override;

include/interfaces.h

@@ -2277,12 +2277,11 @@ public:
     virtual void dcDownloadInit(QString const &fileToDownload) {
        Q_UNUSED(fileToDownload);
     }
-    virtual void dcDownloadStart(QString const &fileToDownload) {
-       Q_UNUSED(fileToDownload);
-    }
-    virtual void dcDownloadReportStart(QString const &fileToDownload) {
-       Q_UNUSED(fileToDownload);
-    }
+    virtual void dcDownloadStart() {}
+    virtual bool dcDownloadRequested() const { return false; }
+    virtual void dcDownloadResetRequest() {}
+    virtual QString dcDownloadFileName() const { return ""; }
+    virtual void dcDownloadReportStart() {}
     virtual void dcDownloadSetTotalBlockNumber(uint16_t totalBlockNumber) {
        Q_UNUSED(totalBlockNumber);
     }

include/reporting_thread.h

@@ -9,7 +9,7 @@ class ReportingThread : public QThread {
     Q_OBJECT
 
 public:
-    ReportingThread(hwinf *hw, QString const &fileToDownload);
+    ReportingThread(hwinf *hw);
     ~ReportingThread();
 
 protected:

src/datIf.cpp

@@ -2,6 +2,9 @@
 #include "sendWRcmd.h"
 #include "controlBus.h"
 #include "storeINdata.h"
+#include "download_thread.h"
+#include "hwapi.h"
+
 #include <QDebug>
 #include <datei.h>
 #include <QDir>
@@ -47,8 +50,10 @@ 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");
 
@@ -198,8 +203,21 @@ char T_datif::datif_cycleSend()
         return 0;
     }
 
+    if (m_hw->dcDownloadRequested()) { // only happens in ca-master
+        m_hw->dcDownloadResetRequest();
 
+        // start download-thread.
+        m_downloadThread = new DownloadThread(m_hw);
+        m_downloadThread->start();
 
+        int cnt = 10;
+        while (--cnt > 0 && !m_downloadThread->isRunning()) {
+            QThread::msleep(100);
+        }
+        if (cnt <= 0) {
+            qCritical() << "DOWNLOAD-THREAD NOT RUNNING WITHIN 1000ms";
+        }
+    }
 
     // 17.7.2023: repeat commands if result was !=OK  -------------------------------------------------------------------
     if (datif_cmdWasPerformed==2 && doRepeat)       // Cmd was not or false performed und Wiederholen erwuenscht

src/download_thread.cpp

@@ -2,9 +2,9 @@
 #include "shared_mem_buffer.h"
 #include "hwapi.h"
 
-DownloadThread::DownloadThread(hwinf *hw, QString const &fileToDownload)
+DownloadThread::DownloadThread(hwinf *hw)
   : m_hw(hw)
-  , m_fileToDownload(fileToDownload) {
+  , m_fileToDownload(m_hw->dcDownloadFileName()) {
 }
 
 DownloadThread::~DownloadThread() {
@@ -12,7 +12,7 @@ DownloadThread::~DownloadThread() {
 
 // download thread running in ca-master sends the dc-file down to firmware
 void DownloadThread::run() {
-    m_hw->dcDownloadInit(m_fileToDownload);
+    // m_hw->dcDownloadInit(m_fileToDownload);
 
     // hier dann den eigentlichen download-process eintragen
 

src/hwapi.cpp

@@ -51,7 +51,7 @@ hwapi::hwapi(QWidget *parent) : QObject(parent)
 //    {
 
 #ifdef THIS_IS_CA_MASTER
-        myDatif = new T_datif();    // für die  CAslave-Lib auskommentieren!
+        myDatif = new T_datif(this);    // für die  CAslave-Lib auskommentieren!
 #else
     qCritical()<<"hwapi: error CAslave cannot include T_datif";
 #endif
@@ -4383,7 +4383,7 @@ void hwapi::dcDownloadInit(QString const &dcFileToDownload) {
 
     SharedMem::getData()->m_downLoadDC.m_totalBlocks = 0;
     SharedMem::getData()->m_downLoadDC.m_currentblockNumber = 0;
-    SharedMem::getData()->m_downLoadDC.m_started = false;
+    SharedMem::getData()->m_downLoadDC.m_started = true;
     SharedMem::getData()->m_downLoadDC.m_running = false;
     SharedMem::getData()->m_downLoadDC.m_finished = false;
 }
@@ -4395,6 +4395,18 @@ void hwapi::dcDownloadReportStart() {
 
 }
 
+bool hwapi::dcDownloadRequested() const {
+    return SharedMem::getDataConst()->m_downLoadDC.m_started;
+}
+
+void hwapi::dcDownloadResetRequest() {
+    SharedMem::getData()->m_downLoadDC.m_started = false;
+}
+
+QString hwapi::dcDownloadFileName() const {
+    return SharedMem::getDataConst()->m_downLoadDC.m_filename;
+}
+
 void hwapi::dcDownloadSetTotalBlockNumber(uint16_t totalBlockNumber) {
     SharedMem::getData()->m_downLoadDC.m_totalBlocks = totalBlockNumber;
 }

src/reporting_thread.cpp

@@ -2,9 +2,9 @@
 #include "shared_mem_buffer.h"
 #include "hwapi.h"
 
-ReportingThread::ReportingThread(hwinf *hw, QString const &fileToDownload)
+ReportingThread::ReportingThread(hwinf *hw)
   : m_hw(hw)
-  , m_fileToDownload(fileToDownload) {
+  , m_fileToDownload(m_hw->dcDownloadFileName()) {
 }
 
 ReportingThread::~ReportingThread() {