added loading libTestShuttle.so

[u/mrichter/AliRoot.git] / FMD / AliFMDAltroMapping.cxx

diff --git a/FMD/AliFMDAltroMapping.cxx b/FMD/AliFMDAltroMapping.cxx
index d474d3c7e5fd56ee63a075f67f3f68ad6cebe8a8..883ec08559338ef6d25f163b7a9998d781d3542f 100644 (file)
--- a/FMD/AliFMDAltroMapping.cxx
+++ b/FMD/AliFMDAltroMapping.cxx
@@ -12,13 +12,28 @@
  * about the suitability of this software for any purpose. It is          *
  * provided "as is" without express or implied warranty.                  *
  **************************************************************************/
-
 /* $Id$ */
-
+/** @file    AliFMDAltroMapping.cxx
+    @author  Christian Holm Christensen <cholm@nbi.dk>
+    @date    Sun Mar 26 18:27:56 2006
+    @brief   Map HW to detector 
+*/
 //____________________________________________________________________
 //                                                                          
 // Mapping of ALTRO hardware channel to detector coordinates 
 //
+// The hardware address consist of a DDL number and 12bits of ALTRO
+// addresses.  The ALTRO address are formatted as follows. 
+//
+//    12              7         4            0
+//    |---------------|---------|------------|
+//    | Board #       | ALTRO # | Channel #  |
+//    +---------------+---------+------------+
+//
+// The mapping is done purely by calculations.  In the future,
+// however, we may need some hard-coded stuff, or an external file to
+// read from.  
+//
 #include "AliFMDAltroMapping.h"                // ALIFMDALTROMAPPING_H
 #include "AliFMDParameters.h"
 #include "AliLog.h"
@@ -60,7 +75,7 @@ AliFMDAltroMapping::Hardware2Detector(UInt_t    ddl, UInt_t    addr,
   // Translate a hardware address to detector coordinates. 
   // The detector is simply 
   // 
-  //    ddl - kBaseDDL + 1
+  //    ddl + 1
   // 
   // The ring number, sector, and strip number is given by the addr
   // argument.  The address argument, has the following format 
@@ -126,7 +141,7 @@ AliFMDAltroMapping::Hardware2Detector(UInt_t    ddl, UInt_t    addr,
   // us detector coordinates, unique at least up a 128 strips.  We
   // return the first strip in the given range. 
   //
-  det          =  (ddl - AliFMDParameters::kBaseDDL) + 1;
+  det          =  ddl + 1;
   UInt_t board =  (addr >> 7) & 0x1F;
   UInt_t altro =  (addr >> 4) & 0x7;
   UInt_t chan  =  (addr & 0xf);
@@ -160,7 +175,7 @@ AliFMDAltroMapping::Detector2Hardware(UShort_t  det, Char_t    ring,
   // Translate detector coordinates to a hardware address.
   // The ddl is simply 
   // 
-  //    kBaseDDL + (det - 1)
+  //    (det - 1)
   // 
   // The ring number, sector, and strip number must be encoded into a
   // hardware address.  The address argument, will have the following
@@ -237,7 +252,7 @@ AliFMDAltroMapping::Detector2Hardware(UShort_t  det, Char_t    ring,
   // With this information, we can decode the detector coordinates to
   // give us a unique hardware address 
   //
-  ddl          =  AliFMDParameters::kBaseDDL + (det - 1);
+  ddl          =  (det - 1);
   UInt_t nsen  =  (ring == 'I' ? 10 : 20);
   UInt_t nsa   =  (ring == 'I' ? 2 : 4);   // Sensors per ALTRO
   UInt_t ncs   =  (ring == 'I' ? 8 : 4);   // Channels per sensor 
@@ -295,7 +310,7 @@ AliFMDAltroMapping::GetPadRow(Int_t hwaddr) const
   Char_t   ring;
   UShort_t sec;
   UShort_t str;
-  Int_t    ddl = AliFMDParameters::kBaseDDL;
+  Int_t    ddl = 0;
   if (!Hardware2Detector(ddl, hwaddr, det, ring, sec, str)) return -1;
   return Int_t(sec);
 }
@@ -317,7 +332,7 @@ AliFMDAltroMapping::GetPad(Int_t hwaddr) const
   Char_t   ring;
   UShort_t sec;
   UShort_t str;
-  Int_t    ddl = AliFMDParameters::kBaseDDL;
+  Int_t    ddl = 0;
   if (!Hardware2Detector(ddl, hwaddr, det, ring, sec, str)) return -1;
   return Int_t(str);
 }
@@ -339,7 +354,7 @@ AliFMDAltroMapping::GetSector(Int_t hwaddr) const
   Char_t   ring;
   UShort_t sec;
   UShort_t str;
-  Int_t    ddl = AliFMDParameters::kBaseDDL;
+  Int_t    ddl = 0;
   if (!Hardware2Detector(ddl, hwaddr, det, ring, sec, str)) return -1;
   return Int_t(ring);
 }