Added comment for std::atomic<bool>::exchange()

send signal runProc_coinAttached only if state changes from false true.

include/hwapi.h

@@ -1384,9 +1384,7 @@ signals:
     void hwapi_doorCBinAndAllDoorsClosed(void) const override;
     void hwapi_doorAllDoorsClosed(void) const override;
 
-
+    void hwapi_coinAttached() const override;
-
-
 
  private slots:
     //void hwapi_slotPrintFinished_OK(void);
@@ -1414,8 +1412,7 @@ signals:
     void sub_slotCoin15(void);
     void sub_slotCoin16(void);
 
-
+    void coinAttached();
-
 
 };
 

include/interfaces.h

@@ -2390,6 +2390,7 @@ signals:
     virtual void hwapi_doorCBinAndAllDoorsClosed(void) const=0;
     virtual void hwapi_doorAllDoorsClosed(void) const=0;
 
+    virtual void hwapi_coinAttached() const = 0;
 
     // NOTE: declaring a "pure virtual" "signal" should be an error and thus not valid.
     /* GH Version, bringt Fehler

include/runProc.h

@@ -15,6 +15,7 @@
 #include <QDebug>
 #include "datIf.h"
 #include <QSharedMemory>
+#include <atomic>
 #include "sendWRcmd.h"
 #include "controlBus.h"
 #include "storeINdata.h"
@@ -35,6 +36,10 @@ class T_runProc : public QObject
 
     void restoreDeviceParameter(struct T_devices *deviceSettings);
 
+#ifndef THIS_IS_CA_MASTER
+    std::atomic_bool m_coinAttached{false};
+#endif
+
 private slots:
     void runProc_slotProcess(void);
     bool bl_performComplStart(void);
@@ -80,6 +85,7 @@ signals:
     void runProc_doorCBinAndAllDoorsClosed(void);
     void runProc_doorAllDoorsClosed(void);
 
+    void runProc_coinAttached();
 };
 
 

src/hwapi.cpp

@@ -128,8 +128,7 @@ hwapi::hwapi(QWidget *parent) : QObject(parent)
     connect(runProcess, SIGNAL(runProc_doorCoinBoxInserted()),          this, SLOT(sub_slotCoin14())); // hwapi_doorCoinBoxInserted()));
     connect(runProcess, SIGNAL(runProc_doorCBinAndAllDoorsClosed()),    this, SLOT(sub_slotCoin15())); // hwapi_doorCBinAndAllDoorsClosed()));
     connect(runProcess, SIGNAL(runProc_doorAllDoorsClosed()),           this, SLOT(sub_slotCoin16())); // hwapi_doorAllDoorsClosed()));
-
+    connect(runProcess, SIGNAL(runProc_coinAttached()),                 this, SLOT(coinAttached()));
-
 }
 
 void hwapi::hwapi_slotPayProc(void)
@@ -227,6 +226,9 @@ void hwapi::sub_slotCoin16(void)
     emit hwapi_doorAllDoorsClosed();
 }
 
+void hwapi::coinAttached() {
+    emit hwapi_coinAttached();
+}
 
 
 /*

src/runProc.cpp

@@ -48,6 +48,16 @@ T_runProc::T_runProc()
 void T_runProc::runProc_slotProcess(void)
 {
 #ifndef THIS_IS_CA_MASTER
+    bool const coinAttached = epi_getDI_CoinAttach();
+    // exchange: (atomically) replaces the underlying value of m_coinAttached
+    // with the value of coinAttached, returns the value of m_coinAttached
+    // before the call
+    if (m_coinAttached.exchange(coinAttached) == false) {
+        if (coinAttached) {
+            // old value was false, and new value is true
+            emit runProc_coinAttached();
+        }
+    }
     cash_paymentProcessing();
     doors_supervise();
     bl_performComplStart();     // neu 1.12.23