TEST: try to track currentCashState

... but this is currently useless because we can not detect overpayment
here.

src/ATBAPP/ATBDeviceControllerPlugin.cpp

@@ -40,6 +40,7 @@ ATBDeviceControllerPlugin::ATBDeviceControllerPlugin(QObject *parent) : QObject(
 
 
     this->currentSelectedTicketType = 0;
+    this->currentCashState = CASH_STATE::CACHE_EMPTY;
 }
 
 ATBDeviceControllerPlugin::~ATBDeviceControllerPlugin() {}
@@ -120,11 +121,13 @@ void ATBDeviceControllerPlugin::requestStopCashInput()
 void ATBDeviceControllerPlugin::cashCollect()
 {
     hw->vend_success();
+    this->currentCashState = CASH_STATE::CACHE_EMPTY;
 }
 
 void ATBDeviceControllerPlugin::cashAbort()
 {
     hw->vend_failed();
+    this->currentCashState = CASH_STATE::CACHE_EMPTY;
 }
 
 // TASKS: Account -------------------------------------------------------------
@@ -382,6 +385,8 @@ void ATBDeviceControllerPlugin::onCashGotCoin()
     // DEBUG
     qCritical() << "ATBDeviceControllerPlugin::onGotCoin()";
 
+    this->currentCashState = CASH_STATE::CACHE_INPUT;
+
     uint32_t amountInt = this->hw->getInsertedAmount();
 
     QString amountString = QString::number(amountInt);

src/ATBAPP/ATBDeviceControllerPlugin.h

@@ -127,6 +127,8 @@ private:
 
    quint8 currentSelectedTicketType;
 
+   nsDeviceControllerInterface::CASH_STATE currentCashState;
+
 private slots:
    // printer