Line data    Source code

       1             : /**************************************************************************
       2             :  * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
       3             :  *                                                                        *
       4             :  * Author: The ALICE Off-line Project.                                    *
       5             :  * Contributors are mentioned in the code where appropriate.              *
       6             :  *                                                                        *
       7             :  * Permission to use, copy, modify and distribute this software and its   *
       8             :  * documentation strictly for non-commercial purposes is hereby granted   *
       9             :  * without fee, provided that the above copyright notice appears in all   *
      10             :  * copies and that both the copyright notice and this permission notice   *
      11             :  * appear in the supporting documentation. The authors make no claims     *
      12             :  * about the suitability of this software for any purpose. It is          *
      13             :  * provided "as is" without express or implied warranty.                  *
      14             :  **************************************************************************/
      15             : 
      16             : /* $Id$ */
      17             : ///////////////////////////////////////////////////////////////////////////////
      18             : ///
      19             : /// This class provides access to beam test ITS SSD digits in raw data.
      20             : //  Modified by Enrico Fragiacomo, October 2004, for beamtest analysis
      21             : ///
      22             : ///////////////////////////////////////////////////////////////////////////////
      23             : 
      24             : #include "AliITSRawStreamSSDv1.h"
      25             : #include "AliRawReader.h"
      26             : 
      27         118 : ClassImp(AliITSRawStreamSSDv1)
      28             : 
      29             : 
      30             : AliITSRawStreamSSDv1::AliITSRawStreamSSDv1(AliRawReader* rawReader) :
      31           0 :   AliITSRawStreamSSD(rawReader),
      32           0 : fADModule(0),
      33           0 : fADC(0){
      34             : // create an object to read ITS SSD raw digits
      35             : 
      36           0 :   fRawReader->SelectEquipment(17,102,102);
      37           0 : }
      38             : 
      39             : 
      40             : Bool_t AliITSRawStreamSSDv1::Next()
      41             : {
      42             : // read the next raw digit
      43             : // returns kFALSE if there is no digit left
      44             : 
      45             :   Int_t seq=0;
      46             : 
      47           0 :   fPrevModuleID = fModuleID;
      48             : 
      49           0 :   if (!fRawReader->ReadNextInt(fData)) return kFALSE;
      50             : 
      51           0 :   fADModule = (fData >> 27) & 0x0000000F;
      52           0 :   fADC       = (fData >> 23) & 0x0000000F;
      53             : 
      54             :   // seq 0 (first 768 strips) or 1 are obtained from fCoord2
      55           0 :   fCoord2    = (fData >> 12) & 0x000007FF;
      56           0 :   seq    = (fCoord2 >= 768) ? 1 : 0; 
      57           0 :   if(seq) fCoord2 = 1535 - fCoord2;
      58             : 
      59           0 :   if((fCoord2<0)||(fCoord2>=768)) return kFALSE;
      60             : 
      61             :   // ADModule 2 -> layer 5
      62             :   // fCoord1 is set according to the cabling map
      63           0 :   if(fADModule==2) {
      64           0 :     if ((fADC==0)&&(seq==0)) {fModuleID = 10; fCoord1=1;}
      65           0 :     else if ((fADC==0)&&(seq==1)) {fModuleID = 11; fCoord1=1;}
      66           0 :     else if ((fADC==1)&&(seq==0)) {fModuleID = 11; fCoord1=0;}
      67           0 :     else if ((fADC==1)&&(seq==1)) {fModuleID = 10; fCoord1=0;}
      68             :   }
      69             :   // ADModule 6 -> layer 6
      70             :   // fCoord1 is set according to the cabling map
      71           0 :   else if(fADModule==6) {
      72           0 :     if ((fADC==0)&&(seq==0)) {fModuleID = 12; fCoord1=0;}
      73           0 :     else if ((fADC==0)&&(seq==1)) {fModuleID = 13; fCoord1=0;}
      74           0 :     else if ((fADC==1)&&(seq==0)) {fModuleID = 13; fCoord1=1;}
      75           0 :     else if ((fADC==1)&&(seq==1)) {fModuleID = 12; fCoord1=1;}
      76             :   }
      77             : 
      78           0 :   fSignal    = (fData & 0x00000FFF);
      79             : 
      80           0 :   if(fSignal>=2048) fSignal-=4096;
      81             : 
      82           0 :   return kTRUE;
      83           0 : }
      84             :