1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 /// This class provides access to ITS SDD digits in raw data.
22 ///////////////////////////////////////////////////////////////////////////////
24 #include "AliITSRawStreamSDD.h"
25 #include "AliRawReader.h"
28 ClassImp(AliITSRawStreamSDD)
30 const Int_t AliITSRawStreamSDD::fgkDDLModuleMap[kDDLsNumber][kModulesPerDDL] = {
32 {240,241,242,246,247,248,252,253,254,258,259,260},
33 {264,265,266,270,271,272,276,277,278,282,283,284},
34 {288,289,290,294,295,296,300,301,302,306,307,308},
35 {312,313,314,318,319,320,-1,-1,-1,-1,-1,-1},
36 {243,244,245,249,250,251,255,256,257,261,262,263},
37 {267,268,269,273,274,275,279,280,281,285,286,287},
38 {291,292,293,297,298,299,303,304,305,309,310,311},
39 {315,316,317,321,322,323,-1,-1,-1,-1,-1,-1},
40 {324,325,326,327,332,333,334,335,340,341,342,343},
41 {348,349,350,351,356,357,358,359,364,365,366,367},
42 {372,373,374,375,380,381,382,383,388,389,390,391},
43 {396,397,398,399,404,405,406,407,412,413,414,415},
44 {420,421,422,423,428,429,430,431,436,437,438,439},
45 {444,445,446,447,452,453,454,455,460,461,462,463},
46 {468,469,470,471,476,477,478,479,484,485,486,487},
47 {492,493,494,495,-1,-1,-1,-1,-1,-1,-1,-1},
48 {328,329,330,331,336,337,338,339,344,345,346,347},
49 {352,353,354,355,360,361,362,363,368,369,370,371},
50 {376,377,378,379,384,385,386,387,392,393,394,395},
51 {400,401,402,403,408,409,410,411,416,417,418,419},
52 {424,425,426,427,432,433,434,435,440,441,442,443},
53 {448,449,450,451,456,457,458,459,464,465,466,467},
54 {472,473,474,475,480,481,482,483,488,489,490,491},
55 {496,497,498,499,-1,-1,-1,-1,-1,-1,-1,-1}};
57 const UInt_t AliITSRawStreamSDD::fgkCodeLength[8] = {8, 18, 2, 3, 4, 5, 6, 7};
59 AliITSRawStreamSDD::AliITSRawStreamSDD(AliRawReader* rawReader) :
60 AliITSRawStream(rawReader),
66 fNCarlos(kModulesPerDDL),
72 // create an object to read ITS SDD raw digits
74 for(Int_t i=0;i<2;i++){
75 for(Int_t ic=0;ic<kModulesPerDDL;ic++){
76 fChannelData[ic][i]=0;
78 fChannelCode[ic][i]=0;
79 fReadCode[ic][i]=kFALSE;
86 for(Int_t i=0;i<kDDLsNumber;i++) fSkip[i]=0;
88 fRawReader->Select("ITSSDD");
90 // fRawReader->SelectEquipment(17, 101, 101);//select this for test data
91 // fNCarlos = 8; //select this for test data
94 UInt_t AliITSRawStreamSDD::ReadBits()
96 // read bits from the given channel
97 UInt_t result = (fChannelData[fCarlosId][fChannel] & ((1<<fReadBits[fCarlosId][fChannel]) - 1));
98 fChannelData[fCarlosId][fChannel] >>= fReadBits[fCarlosId][fChannel];
99 fLastBit[fCarlosId][fChannel] -= fReadBits[fCarlosId][fChannel];
103 Int_t AliITSRawStreamSDD::DecompAmbra(Int_t value) const
105 // AMBRA decompression (from 8 to 10 bit)
107 if ((value & 0x80) == 0) {
109 } else if ((value & 0x40) == 0) {
110 return 0x081 + ((value & 0x3f) << 1);
111 } else if ((value & 0x20) == 0) {
112 return 0x104 + ((value & 0x1f) << 3);
114 return 0x208 + ((value & 0x1f) << 4);
119 Bool_t AliITSRawStreamSDD::Next()
121 // read the next raw digit
122 // returns kFALSE if there is no digit left
124 fPrevModuleID = fModuleID;
125 fDDL=fRawReader->GetDDLID();
126 Int_t ddln = fRawReader->GetDDLID();
128 while (fSkip[ddln] < 9) {
129 if (!fRawReader->ReadNextInt(fData))return kFALSE;
130 if ((fData >> 30) == 0x01) continue; // JTAG word
135 Int_t countFoot[kModulesPerDDL];
136 for(Int_t i=0;i<kModulesPerDDL;i++) countFoot[i]=0;
137 UInt_t iCarlos0Word=805306368;
138 UInt_t iCarlos1Word=805306369;
139 UInt_t iCarlos2Word=805306370;
140 UInt_t iCarlos3Word=805306371;
141 UInt_t iCarlos4Word=805306372;
142 UInt_t iCarlos5Word=805306373;
143 UInt_t iCarlos6Word=805306374;
144 UInt_t iCarlos7Word=805306375;
145 UInt_t iCarlos8Word=805306376;
146 UInt_t iCarlos9Word=805306377;
147 UInt_t iCarlos10Word=805306378;
148 UInt_t iCarlos11Word=805306379;
149 UInt_t iFifo0Word=805306384;
150 UInt_t iFifo1Word=805306385;
151 UInt_t iFifo2Word=805306386;
152 UInt_t iFifo3Word=805306387;
154 if ((fChannel < 0) || (fLastBit[fCarlosId][fChannel] < fReadBits[fCarlosId][fChannel])) {
156 if (!fRawReader->ReadNextInt(fData)){
157 return kFALSE; // read next word
159 ddln = fRawReader->GetDDLID();
162 for(Int_t icr=0;icr<kModulesPerDDL;icr++) countFoot[icr]=0;
164 if(ddln < 0 || ddln > (kDDLsNumber-1)) ddln = 0;
165 while (fSkip[ddln] < 9) {
166 if (!fRawReader->ReadNextInt(fData)){
169 if ((fData >> 30) == 0x01) continue; // JTAG word
174 if((fData>=iCarlos0Word&&fData<=iCarlos11Word)||(fData>=iFifo0Word&&fData<=iFifo3Word)){
175 if(fData==iCarlos0Word){
179 else if (fData==iCarlos1Word){
183 else if (fData==iCarlos2Word){
185 if(fNCarlos == 8) fNfifo1 = fCarlosId;
186 else fNfifo0 = fCarlosId;
188 else if (fData==iCarlos3Word){
192 else if (fData==iCarlos4Word){
194 if(fNCarlos == 8) fNfifo2 = fCarlosId;
195 else fNfifo1 = fCarlosId;
197 else if (fData==iCarlos5Word){
199 if(fNCarlos == 8) fNfifo2 = fCarlosId;
200 else fNfifo1 = fCarlosId;
202 else if (fData==iCarlos6Word){
204 if(fNCarlos == 8) fNfifo3 = fCarlosId;
205 else fNfifo2 = fCarlosId;
207 else if (fData==iCarlos7Word){
209 if(fNCarlos == 8) fNfifo3 = fCarlosId;
210 else fNfifo2 = fCarlosId;
212 else if (fData==iCarlos8Word){
216 else if (fData==iCarlos9Word){
220 else if (fData==iCarlos10Word){
224 else if (fData==iCarlos11Word){
228 else if (fData==iFifo0Word){
231 else if (fData==iFifo1Word){
234 else if (fData==iFifo2Word){
237 else if (fData==iFifo3Word){
241 if(fData==1059004191) continue;
242 if (fNCarlos == 8 && (fCarlosId == 8 || fCarlosId == 9 ||
243 fCarlosId ==10 || fCarlosId == 11))continue;
245 fModuleID = fgkDDLModuleMap[fRawReader->GetDDLID()][fCarlosId];
247 if ((fData >> 28) == 0x02) { // header
248 fEventId = (fData >> 3) & 0x07FF;
249 } else if ((fData >> 28) == 0x03) { // footer
250 countFoot[fCarlosId]++; // stop before the last word (last word=jitter)
252 for(Int_t ic=0;ic<fNCarlos;ic++){
253 if(countFoot[ic]<3) exit=kFALSE;
258 } else if ((fData >> 29) == 0x00) { // error
260 if ((fData & 0x00000163) != 0) {
261 fRawReader->AddMajorErrorLog(kDataError,Form("Error code = %8.8x",fData));
262 AliWarning(Form("error codes = %8.8x",fData));
265 } else if ((fData >> 30) == 0x01) { // JTAG word
267 } else if ((fData >> 30) == 0x02) { // channel 0 data
270 } else if ((fData >> 30) == 0x03) { // channel 1 data
272 } else { // unknown data format
273 fRawReader->AddMajorErrorLog(kDataFormatErr,Form("Invalid data %8.8x",fData));
274 AliWarning(Form("invalid data: %8.8x\n", fData));
278 if (fChannel >= 0) { // add read word to the data
279 fChannelData[fCarlosId][fChannel] +=
280 (ULong64_t(fData & 0x3FFFFFFF) << fLastBit[fCarlosId][fChannel]);
281 fLastBit[fCarlosId][fChannel] += 30;
284 } else { // decode data
286 if (fReadCode[fCarlosId][fChannel]) {// read the next code word
287 fChannelCode[fCarlosId][fChannel] = ReadBits();
288 fReadCode[fCarlosId][fChannel] = kFALSE;
289 fReadBits[fCarlosId][fChannel] = fgkCodeLength[fChannelCode[fCarlosId][fChannel]];
291 } else { // read the next data word
292 UInt_t data = ReadBits();
293 fReadCode[fCarlosId][fChannel] = kTRUE;
294 fReadBits[fCarlosId][fChannel] = 3;
295 if (fChannelCode[fCarlosId][fChannel] == 0) { // set the time bin
296 fTimeBin[fCarlosId][fChannel] = data;
297 } else if (fChannelCode[fCarlosId][fChannel] == 1) { // next anode
298 fTimeBin[fCarlosId][fChannel] = 0;
299 fAnode[fCarlosId][fChannel]++;
301 }else { // ADC signal data
302 fSignal = DecompAmbra(data + (1 << fChannelCode[fCarlosId][fChannel]) + fLowThreshold[fChannel]);
303 fCoord1 = fAnode[fCarlosId][fChannel];
304 fCoord2 = fTimeBin[fCarlosId][fChannel];
305 fTimeBin[fCarlosId][fChannel]++;
315 void AliITSRawStreamSDD::Reset(){
316 //reset data member for a new ddl
318 for(Int_t i=0;i<2;i++){
319 for(Int_t ic=0;ic<kModulesPerDDL;ic++){
320 fChannelData[ic][i]=0;
322 fChannelCode[ic][i]=0;
323 fReadCode[ic][i]=kFALSE;
331 fDDL=fRawReader->GetDDLID();