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[u/mrichter/AliRoot.git] / MUON / AliMUONRegionalTriggerBoard.cxx
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809874e0 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
3d1463c8 18//-----------------------------------------------------------------------------
c4ee792d 19/// \class AliMUONRegionalTriggerBoard
20/// Dimuon regional trigger implementation:
21/// - entry are local board responses
22/// - output is 12-bit word
23/// - algorithm is similar to the global one
24///
25/// \author Rachid Guernane (LPCCFd)
c05673c9 26/// Corrected by Christian Finck (Subatech)
3d1463c8 27//-----------------------------------------------------------------------------
809874e0 28
29#include "AliMUONRegionalTriggerBoard.h"
30
41922e78 31#include "AliLog.h"
32
809874e0 33#include "TBits.h"
34
35#include <Riostream.h>
36
71a2d3aa 37/// \cond CLASSIMP
809874e0 38ClassImp(AliMUONRegionalTriggerBoard)
71a2d3aa 39/// \endcond
809874e0 40
41//___________________________________________
42AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard()
c05673c9 43 : AliMUONTriggerBoard(),
44 fMask(0x0)
809874e0 45{
71a2d3aa 46/// Default constructor
809874e0 47 for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0;
48}
49
50//___________________________________________
c05673c9 51AliMUONRegionalTriggerBoard::AliMUONRegionalTriggerBoard(const char *name, Int_t a)
52 : AliMUONTriggerBoard(name, a),
53 fMask(0x0)
809874e0 54{
71a2d3aa 55/// Standard constructor
809874e0 56 for (Int_t i=0; i<16; i++) fLocalResponse[i] = 0;
57}
58
59//___________________________________________
71a2d3aa 60AliMUONRegionalTriggerBoard::~AliMUONRegionalTriggerBoard()
61{
62/// Destructor
63}
64
65//___________________________________________
809874e0 66void AliMUONRegionalTriggerBoard::Response()
67{
c05673c9 68/// response is given following the regional algorithm
254985cb 69// output from local trigger algorithm
70// [+, -] * [Hpt, Lpt]
71// transformed to [+, -, US, LS] * [Hpt, Lpt]
71a2d3aa 72
edd00c2d 73 Int_t t[16];
809874e0 74
c05673c9 75 for (Int_t i = 0; i < 16; ++i)
76 {
77 if ((fMask >> i) & 0x1)
78 t[i] = fLocalResponse[i];
79 else
80 t[i] = 0;
81 }
82
809874e0 83 Int_t rank = 8;
84
c05673c9 85 for (Int_t i = 0; i < 4; ++i)
809874e0 86 {
87 Int_t ip = 0;
88
c05673c9 89 for (Int_t j = 0; j < rank; ++j)
809874e0 90 {
ad705f30 91 UShort_t lthres = Algo(t[2*j],t[2*j+1],"LPT",i);
254985cb 92
ad705f30 93 UShort_t hthres = Algo(t[2*j],t[2*j+1],"HPT",i); hthres <<= 4;
809874e0 94
ad705f30 95 t[ip] = lthres | hthres;
809874e0 96
97 ip++;
98 }
99
100 rank /= 2;
101 }
ad705f30 102 fResponse = t[0]; // 8-bit [H4:L4]
809874e0 103}
104
105//___________________________________________
a6e0ebfe 106UShort_t AliMUONRegionalTriggerBoard::Algo(UShort_t i, UShort_t j, const char *thres, Int_t level)
809874e0 107{
c05673c9 108/// implementation of the regional algorithm
109/// similar to the global algorithm except for the
110/// input layer
71a2d3aa 111
254985cb 112/// level = 0 a ,b = local response = Hpt (+|-) | Lpt (+|-)
113/// level > 0 a ,b = reg response = Hpt (+|-|us|ls) | Lpt (+|-|us|ls)
114
ad705f30 115 TBits a(8), b(8); a.Set(8,&i); b.Set(8,&j);
809874e0 116
117 TBits trg1(2), trg2(2), trg(2);
118
ad705f30 119 if (!strcmp(thres,"LPT"))
809874e0 120 {
254985cb 121
122 if (!level)
809874e0 123 {
124 trg1[0] = a[0]; trg1[1] = a[1];
125 trg2[0] = b[0]; trg2[1] = b[1];
126 }
127 else
128 {
129 trg1[0] = a[2]; trg1[1] = a[3];
130 trg2[0] = b[2]; trg2[1] = b[3];
131 }
132 }
ad705f30 133 else
809874e0 134 {
135 if (!level)
136 {
137 trg1[0] = a[2]; trg1[1] = a[3];
138 trg2[0] = b[2]; trg2[1] = b[3];
139 }
140 else
141 {
142 trg1[0] = a[6]; trg1[1] = a[7];
ad705f30 143 trg2[0] = b[6]; trg2[1] = b[7];
809874e0 144 }
145 }
146
147 TBits trgLS1(1), trgUS1(1), trgLS2(1), trgUS2(1), trgLS(1), trgUS(1);
148
149 if (!level)
150 {
151 trgLS1[0] = trgUS1[0] = trgLS2[0] = trgUS2[0] = 0;
152 }
153 else
154 {
ad705f30 155 if (!strcmp(thres,"LPT"))
809874e0 156 {
254985cb 157 //trgLS1[0] = a[1]; trgUS1[0] = a[0];
158 //trgLS2[0] = b[1]; trgUS2[0] = b[0];
159 trgLS1[0] = a[0]; trgUS1[0] = a[1];
160 trgLS2[0] = b[0]; trgUS2[0] = b[1];
809874e0 161 }
809874e0 162 else
163 {
254985cb 164 //trgLS1[0] = a[5]; trgUS1[0] = a[4];
165 //trgLS2[0] = b[5]; trgUS2[0] = b[4];
166 trgLS1[0] = a[4]; trgUS1[0] = a[5];
167 trgLS2[0] = b[4]; trgUS2[0] = b[5];
809874e0 168 }
169 }
170
171 trgLS[0] = ( trg1[0] & trg2[0] ) | ( trg1[1] & trg2[1] ) | trgLS1[0] | trgLS2[0];
172 trgUS[0] = ( trg1[0] & trg2[1] ) | ( trg1[1] & trg2[0] ) | trgUS1[0] | trgUS2[0];
173
174 trg[0] = trg1[0] | trg2[0];
175 trg[1] = trg1[1] | trg2[1];
176
177 TBits v(4);
178
254985cb 179 //v[0] = trgUS[0];
180 //v[1] = trgLS[0];
181 v[0] = trgLS[0];
182 v[1] = trgUS[0];
809874e0 183 v[2] = trg[0];
184 v[3] = trg[1];
809874e0 185 UShort_t rv = 0;
186 v.Get(&rv);
809874e0 187 return rv;
188}
edd00c2d 189
809874e0 190//___________________________________________
edd00c2d 191void AliMUONRegionalTriggerBoard::Scan(Option_t*) const
809874e0 192{
c05673c9 193/// scan local board entries
71a2d3aa 194
edd00c2d 195 for (Int_t i=0; i<16; i++)
a4435944 196 {
197 TBits b;
198 b.Set(6,&fLocalResponse[i]);
199
200 cout << "Entry " << i << " is " << b << endl;
201
202 }
203
809874e0 204}
41922e78 205//___________________________________________
c05673c9 206void AliMUONRegionalTriggerBoard::Mask(UShort_t mask)
41922e78 207{
c05673c9 208/// mask entry index
209
210 fMask = mask;
41922e78 211}
c05673c9 212
213
214