added getCounterFirstOrbit()

Author: sy-c

include/ReadoutCard/DmaChannelInterface.h

@@ -143,6 +143,13 @@ class DmaChannelInterface
   /// Gets card unique ID, such as an FPGA chip ID in the case of the CRU
   /// \return A string containing the unique ID
   virtual boost::optional<std::string> getCardId() = 0;
+
+  /// Gets the first orbit received by CRU
+  /// cf JIRA OMON-800
+  /// \return orbit number, or -1 if not found.
+  virtual int32_t getCounterFirstOrbit() {
+    return -1;
+  }
 };
 
 } // namespace roc

src/Cru/CruDmaChannel.cxx

@@ -481,5 +481,18 @@ boost::optional<std::string> CruDmaChannel::getCardId()
   }
 }
 
+int32_t CruDmaChannel::getCounterFirstOrbit() {
+  int address = 0x0;
+  int endpoint = getBar()->getEndpointNumber();
+  if (endpoint == 0) {
+    address = 0x64002C;
+  } else if (endpoint == 1) {
+    address = 0x74002C;
+  } else {
+    return -1;
+  }
+  return getBar2()->readRegister(address / 4);
+}
+
 } // namespace roc
 } // namespace o2

src/Cru/CruDmaChannel.h

@@ -62,6 +62,8 @@ class CruDmaChannel final : public DmaChannelPdaBase
   virtual boost::optional<std::string> getCardId() override;
   AllowedChannels allowedChannels();
 
+  virtual int32_t getCounterFirstOrbit() override;
+
  protected:
   virtual void deviceStartDma() override;
   virtual void deviceStopDma() override;