From fd5349a9a7a0f772a8d0a764507e83003b550f8f Mon Sep 17 00:00:00 2001
From: jklein <jklein@f7af4fe6-9843-0410-8265-dc069ae4e863>
Date: Tue, 13 Mar 2012 07:35:11 +0000
Subject: [PATCH 1/1] - implement GetHCId() for AliTRDtrackletGTU - run digital
 processing in correct ROB, MCM sequence

---
 TRD/AliTRDdigitizer.cxx | 26 +++++++++++++-------------
 TRD/AliTRDtrackletGTU.h |  1 +
 2 files changed, 14 insertions(+), 13 deletions(-)

diff --git a/TRD/AliTRDdigitizer.cxx b/TRD/AliTRDdigitizer.cxx
index 4dde0cee042..fc53d1031d8 100644
--- a/TRD/AliTRDdigitizer.cxx
+++ b/TRD/AliTRDdigitizer.cxx
@@ -1944,21 +1944,21 @@ void AliTRDdigitizer::RunDigitalProcessing(Int_t det)
     return;
 
   //Call the methods in the mcm class using the temporary array as input  
-  for(Int_t rob = 0; rob < digits->GetNrow() / 2; rob++)
-  {
-    for(Int_t mcm = 0; mcm < 16; mcm++)
-    {
-      fMcmSim->Init(det, rob, mcm); 
-      fMcmSim->SetDataByPad(digits, fDigitsManager);
-      fMcmSim->Filter();
-      if (feeParam->GetTracklet()) {
-        fMcmSim->Tracklet();
-        fMcmSim->StoreTracklets();
+  // process the data in the same order as in hardware
+  for (Int_t side = 0; side <= 1; side++) {
+    for(Int_t rob = side; rob < digits->GetNrow() / 2; rob += 2) {
+      for(Int_t mcm = 0; mcm < 16; mcm++) {
+	fMcmSim->Init(det, rob, mcm); 
+	fMcmSim->SetDataByPad(digits, fDigitsManager);
+	fMcmSim->Filter();
+	if (feeParam->GetTracklet()) {
+	  fMcmSim->Tracklet();
+	  fMcmSim->StoreTracklets();
+	}
+	fMcmSim->ZSMapping();
+	fMcmSim->WriteData(digits);
       }
-      fMcmSim->ZSMapping();
-      fMcmSim->WriteData(digits);
     }
   }
-
 }
 
diff --git a/TRD/AliTRDtrackletGTU.h b/TRD/AliTRDtrackletGTU.h
index 4ca11db624f..c6221ebc227 100644
--- a/TRD/AliTRDtrackletGTU.h
+++ b/TRD/AliTRDtrackletGTU.h
@@ -43,6 +43,7 @@ class AliTRDtrackletGTU : public AliTRDtrackletBase {
 
   // ----- Getters for offline corresponding values -----
   Bool_t CookPID() { return kFALSE; }
+  Int_t GetHCId() const { return fTrackletESD ? fTrackletESD->GetHCId() : fTracklet->GetHCId(); }
   Int_t GetDetector() const { return fTrackletESD ? fTrackletESD->GetDetector() : fTracklet->GetDetector(); }
   Int_t GetIndex() const { return fIndex; }
 
-- 
2.43.5