Start/stop CRU datataking

Author: kostorr

src/Cru/CruBar.cxx

@@ -561,6 +561,11 @@ int CruBar::getDdgBurstLength()
   return Utilities::getWidth(burst);
 }
 
+void CruBar::enableDataTaking()
+{
+  modifyRegister(Cru::Registers::BSP_USER_CONTROL.index, 0, 1, 0x1);
+}
+
 void CruBar::disableDataTaking()
 {
   modifyRegister(Cru::Registers::BSP_USER_CONTROL.index, 0, 1, 0x0);

src/Cru/CruBar.h

@@ -49,8 +49,6 @@ class CruBar final : public BarInterfaceBase
     virtual int32_t getLinks() override;
     virtual int32_t getLinksPerWrapper(int wrapper) override;
 
-
-
     void pushSuperpageDescriptor(uint32_t link, uint32_t pages, uintptr_t busAddress);
     uint32_t getSuperpageCount(uint32_t link);
     void setDataEmulatorEnabled(bool enabled);
@@ -72,6 +70,9 @@ class CruBar final : public BarInterfaceBase
     void setWrapperCount();
     void configure() override;
     Cru::ReportInfo report();
+    
+    void enableDataTaking();
+    void disableDataTaking();
 
     void setDebugModeEnabled(bool enabled);
     bool getDebugModeEnabled();
@@ -89,7 +90,6 @@ class CruBar final : public BarInterfaceBase
     uint32_t getFpgaChipHigh();
     uint32_t getFpgaChipLow();
     std::vector<Link> populateLinkList();
-    void disableDataTaking();
     int getDdgBurstLength();
     //void checkParameters();
 

src/Cru/CruDmaChannel.cxx

@@ -152,6 +152,12 @@ void CruDmaChannel::deviceStartDma()
 
   // Start DMA
   setBufferReady();
+
+  // Enable data taking
+  if (dataSourceSelection == Cru::Registers::DATA_SOURCE_SELECT_GBT) {
+    getBar2()->disableDataTaking(); // Make sure we don't start from a bad state
+    getBar2()->enableDataTaking();
+  }
 }
 
 /// Set buffer to ready
@@ -170,6 +176,7 @@ void CruDmaChannel::setBufferNonReady()
 void CruDmaChannel::deviceStopDma()
 {
   setBufferNonReady();
+  getBar2()->disableDataTaking();
   int moved = 0;
   for (auto& link : mLinks) {
     int32_t superpageCount = getBar()->getSuperpageCount(link.id);