void digi()
{
  // Macro created 20/09/2006 by S.Spataro
  // It loads a simulation file and digitize hits 

  // Verbosity level (0=quiet, 1=event level, 2=track level, 3=debug)
  Int_t iVerbose = 0; // just forget about it, for the moment
  
  // Input file (MC events)
  TString simFile = "sim.root";
  PndFileNameCreator creator(simFile.Data());
  TString digiFile = creator.GetDigiFileName();
  TString parFile = creator.GetParFileName();
  
  // Digitisation file (ascii)
  TString digiParFile = "all.par";
  
  // Output file

  
  // -----   Timer   --------------------------------------------------------
  TStopwatch timer;
  
  // -----   Reconstruction run   -------------------------------------------
  FairRunAna *fRun= new FairRunAna();
  fRun->SetInputFile(simFile);
  fRun->SetOutputFile(digiFile);
  fRun->SetWriteRunInfoFile(kFALSE);  
  
  // -----  Parameter database   --------------------------------------------
  TString allDigiFile = gSystem->Getenv("VMCWORKDIR");
  allDigiFile += "/macro/params/";
  allDigiFile += digiParFile;
  
  FairRuntimeDb* rtdb = fRun->GetRuntimeDb();
  FairParRootFileIo* parInput1 = new FairParRootFileIo();
  parInput1->open(parFile.Data());
  
  FairParAsciiFileIo* parIo1 = new FairParAsciiFileIo();
  parIo1->open(allDigiFile.Data(),"in");
        
  rtdb->setFirstInput(parInput1);
  rtdb->setSecondInput(parIo1);
  
  // -----   STT digi producers   ---------------------------------
  //PndSttHitProducerRealFast* sttHitProducer = new PndSttHitProducerRealFast();
  //fRun->AddTask(sttHitProducer);
  
  // -----   MDV digi producers   ---------------------------------
  PndMvdDigiTask* mvddigi = new PndMvdDigiTask();
  mvddigi->SetVerbose(iVerbose);
  fRun->AddTask(mvddigi);
  
  // -----   EMC digi producers   ---------------------------------
  PndEmcHitsToWaveform* emcHitsToWaveform= new PndEmcHitsToWaveform(iVerbose);
  PndEmcWaveformToDigi* emcWaveformToDigi=new PndEmcWaveformToDigi(iVerbose);
  emcHitsToWaveform->SetStorageOfData(kFALSE);
  //emcWaveformToDigi->SetStorageOfData(kFALSE);
  fRun->AddTask(emcHitsToWaveform);  // full digitization
  fRun->AddTask(emcWaveformToDigi);  // full digitization

  // -----   SciT hit producers   ---------------------------
  //PndSciTHitProducerIdeal* tofhit = new PndSciTHitProducerIdeal();
  //tofhit->SetVerbose(iVerbose);
  //fRun->AddTask(tofhit);

  // -----   MDT hit producers   ---------------------------------
  //PndMdtHitProducerIdeal* mdtHitProd = new PndMdtHitProducerIdeal();
  //mdtHitProd->SetPositionSmearing(.3); // position smearing [cm]
  //fRun->AddTask(mdtHitProd);

  // -----   DRC hit producers   ---------------------------------
  //PndDrcHitProducerReal* drchit = new PndDrcHitProducerReal();
  //drchit->SetVerbose(iVerbose);
  //fRun->AddTask(drchit);

  // -----   GEM hit producers   ---------------------------------
  PndGemDigitize* gemDigitize = new PndGemDigitize("GEM Digitizer", iVerbose);
  fRun->AddTask(gemDigitize);
  // -----   FTS hit producers   ---------------------------------
  //PndFtsHitProducerRealFast* ftsHitProducer = new PndFtsHitProducerRealFast();
  //fRun->AddTask(ftsHitProducer);

  // -----   Ftof hit producers   ---------------------------
  //PndFtofHitProducerIdeal* ftofhit = new PndFtofHitProducerIdeal();
  //ftofhit->SetVerbose(iVerbose);
  //fRun->AddTask(ftofhit);

  // -----   Intialise and run   --------------------------------------------
  fRun->Init();

  timer.Start();
  fRun->Run();

  // -----   Finish   -------------------------------------------------------
  timer.Stop();
  Double_t rtime = timer.RealTime();
  Double_t ctime = timer.CpuTime();
  cout << endl << endl;
  cout << "Macro finished successfully." << endl;
  cout << "Output file is "    << outFile << endl;
  cout << "Parameter file is " << parFile << endl;
  cout << "Real time " << rtime << " s, CPU time " << ctime << " s" << endl;
  cout << endl;
  // ------------------------------------------------------------------------
  cout << " Test passed" << endl;
  cout << " All ok " << endl;

  // exit(0);
}