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/** @file |
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* $Source: /afs/ba.infn.it/user/pamela/src/CVS/chewbacca/PamOffLineSW/techmodel/McmdReader.cpp,v $ |
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* $Id: McmdReader.cpp,v 1.2 2008-10-01 09:53:42 mocchiut Exp $ |
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* $Author: mocchiut $ |
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* |
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* Implementation of the McmdReader class. |
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*/ |
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|
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extern "C" { |
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#include "CRC.h" |
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} |
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#include "ReaderAlgorithms.h" |
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using namespace pamela::techmodel; |
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|
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/** |
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* Constructor. |
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*/ |
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McmdReader::McmdReader(void) : |
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TechmodelAlgorithm(PacketType::Mcmd, "Mcmd") { |
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Mcmd = new McmdEvent(); |
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} |
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|
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/** |
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* Get a string with the version info of the algorithm. |
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*/ |
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std::string McmdReader::GetVersionInfo(void) const { |
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return "$Header: /afs/ba.infn.it/user/pamela/src/CVS/chewbacca/PamOffLineSW/techmodel/McmdReader.cpp,v 1.2 2008-10-01 09:53:42 mocchiut Exp $\n"; |
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} |
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|
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/** |
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* Initialize the algorithm with a special run. This will initialize the |
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* event reader routines for all packet types. |
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*/ |
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void McmdReader::Init(PamelaRun *run) { |
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// logger->debug(_T("Initialize")); |
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// SetInputStream(run); |
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run->WriteSubPacket(this, &Mcmd, Mcmd->Class()); |
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} |
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|
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/** |
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* Unpack the Mcmd event |
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* Each subpacket is prafaceded by 4 OBT bytes. |
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* The elementar structure is a kind of |
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* --------CPU - OBT--------------------------------- |
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* OBT - 4 Bytes |
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* --------Start Sub-Packet--------------------------------- |
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* SeqID - 2 Bytes |
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* T - 1 bit | spare - 7 bits | Mcmd-ID - 1 byte |
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* Spare - 4 bits | Mcmd Lenght 12 bits |
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* Time Tag - 4 Bytes |
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* DATA - McmdLength * 2 Bytes |
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* don't care - 1 Byte |
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* END-ID - 1 Byte is the sum of subPacket Bytes module 256 |
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* --------End Sub-Packet--------------------------------- |
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* --------CPU CRC-16 on OBT + subPacket--------------------------------- |
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* subCRC - 2 Bytes |
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* this structure is repeated one or more times. |
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* The last 2 Bytes are CRC16 computed by CPU on all previous (OBT + subpacket data + subCRC) repetitions |
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|
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* @Event Number |
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* @length is the size in bytes of the event (or packet) |
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*/ |
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void McmdReader::PKT_RunEvent(char* mysubData, long int length) throw (WrongCRCException_PKTUsed) { |
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stringstream oss; |
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string msg; |
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|
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int i = 0; |
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const int obt_len = 4; |
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const int subHeader_len = 10; |
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const int subTrailer_len = 2; |
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const int subPckCRC_len = 2; |
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long int dataLength = 0; |
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|
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char OBT[obt_len] = { 0 }; |
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char subHeader[subHeader_len] = { 0 }; |
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char subTrailer[subTrailer_len] = { 0 }; |
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char subPckCRC[subPckCRC_len] = { 0 }; |
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char* subData = NULL; |
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|
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UINT16 subCRC = 0; //CRC of the subpacket (updated as subPckt is read) |
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UINT16 readCRC = 0; //CRC read from the subpacket |
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UINT16 partialCRC = 0; //partial CRC updated as mcmd packet is read (to compare with CRC read in the total Mcmd header) |
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McmdRecord *rec; |
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|
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Mcmd->Records->Clear(); |
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TClonesArray &recs = *(Mcmd->Records); |
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|
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int start = 0; |
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// while(start < (length)) { |
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// printf(" %i => %X \n",start,(UINT8)mysubData[start]); |
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// start++; |
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// }; |
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// start=0; |
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|
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while (start < (length - 2 - obt_len - subTrailer_len - subTrailer_len - subPckCRC_len)) |
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// while(start < (length-2)) |
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{ |
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// printf(" 1data %X \n",(UINT8)mysubData[start]); |
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//Read the OBT preceeding the subpacket then calculate a partial CRC for it |
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//and update the partialCRC |
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for (int m = start; m < start + obt_len; m++) { |
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OBT[m - start] = mysubData[m]; |
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} |
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start += obt_len; |
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|
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// printf(" 2data %X \n",(UINT8)mysubData[start]); |
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// printf(" 2data %X \n",(UINT8)mysubData[start]+1); |
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subCRC = CM_Compute_CRC16(0, (BYTE*) &OBT, obt_len); |
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partialCRC = CM_Compute_CRC16(partialCRC, (BYTE*) &OBT, obt_len); |
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//Read the header for the subPacket and read mcmdLength |
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//12 is the total lenght of subHeader + subTrailer |
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for (int m = start; m < start + subHeader_len; m++) { |
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subHeader[m - start] = mysubData[m]; |
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} |
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start += subHeader_len; |
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|
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// printf(" 3data %X \n",(UINT8)mysubData[start]); |
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// printf(" 3data %X \n",(UINT8)mysubData[start+1]); |
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subCRC = CM_Compute_CRC16(subCRC, (BYTE*) &subHeader, subHeader_len); |
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partialCRC = CM_Compute_CRC16(partialCRC, (BYTE*) &subHeader, subHeader_len); |
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dataLength = (((0x0fff) & ((UINT16)subHeader[4])) << 8 | ((UINT16)subHeader[5]) * 2) - subHeader_len |
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- subTrailer_len; |
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// printf(" datalenght = %i subh 4 %X subd 5 %X \n",dataLength,(UINT8)subHeader[4],(UINT8)subHeader[5]); |
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//the line below is exactly how it was in the original version |
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if (dataLength < 0) |
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break; //it should throw an exception ***TBD*** |
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//I add also this check |
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if (dataLength + start > (length - 2 - subTrailer_len - subPckCRC_len)) { |
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oss.str(""); |
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oss << "MCMD: Error in the MCMD Packet lenght, it is not " << length; |
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msg = oss.str(); |
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PamOffLineSW::mainLogUtil->logWarning(msg); |
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break; //it should throw an exception ***TBD*** |
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} |
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|
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//read subpacket data according to data length then calculate partial CRC for data |
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//and update the partialCRC |
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|
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subData = new char[dataLength]; |
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for (int m = start; m < start + dataLength; m++) { |
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subData[m - start] = mysubData[m]; |
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} |
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start += dataLength; |
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|
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// printf(" 4data %X \n",(UINT8)mysubData[start]); |
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// printf(" 4data %X \n",(UINT8)mysubData[start+1]); |
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for (int jj = 0; jj < dataLength; jj++) { |
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subCRC = CM_Compute_CRC16(subCRC, (BYTE*) (subData + jj), 1); |
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partialCRC = CM_Compute_CRC16(partialCRC, (BYTE*) (subData + jj), 1); |
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} |
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|
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//Read the CRC inside of MCMD |
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//To check sum of all sub packet data, module 256 ****TBD**** |
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for (int m = start; m < start + subTrailer_len; m++) { |
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subTrailer[m - start] = mysubData[m]; |
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} |
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start += subTrailer_len; |
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// printf(" 5data %X \n",(UINT8)mysubData[start]); |
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// printf(" 5data %X \n",(UINT8)mysubData[start+1]); |
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|
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subCRC = CM_Compute_CRC16(subCRC, (BYTE*) &subTrailer, 2); |
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partialCRC = CM_Compute_CRC16(partialCRC, (BYTE*) &subTrailer, 2); |
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//Read the CRC of subPacket |
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for (int m = start; m < start + subPckCRC_len; m++) { |
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subPckCRC[m - start] = mysubData[m]; |
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} |
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start += subPckCRC_len; |
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|
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partialCRC = CM_Compute_CRC16(partialCRC, (BYTE*) &subPckCRC, 2); |
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readCRC = (((BYTE)subPckCRC[0]) << 8) + ((BYTE)subPckCRC[1]); |
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|
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//finally check if the RecordCRC is correct |
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//and finally update the partialCRC |
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//TO DO - if one CRC is wrong also the total one will be corrupted |
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// printf(" subCRC %X readCRC %X \n",subCRC,readCRC); |
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if (subCRC == readCRC) { |
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rec = new (recs[i++]) McmdRecord(); //aggiungo un nuovo McmdRecord all'evento |
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rec->MCMD_RECORD_OBT = (((UINT32)OBT[0] << 24) & 0xFF000000) + (((UINT32)OBT[1] << 16) & 0x00FF0000) |
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+ (((UINT32)OBT[2] << 8) & 0x0000FF00) + (((UINT32)OBT[3]) & 0x000000FF); |
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rec->SeqID = (((BYTE)subHeader[0] << 8) & 0xFF00) + (((BYTE)subHeader[1]) & 0x00FF); |
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rec->Tbit = ((BYTE)((subHeader[2] & 0x80)) >> 7); |
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rec->ID1 = (BYTE)subHeader[3]; |
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rec->McmdLength = (0x0fff) & (((UINT16)(subHeader[4] << 8)) + ((UINT16)subHeader[5])); |
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rec->TimeTag = (((UINT32)subHeader[6] << 24) & 0xFF000000) + (((UINT32)subHeader[7] << 16) & 0x00FF0000) + (((UINT32)subHeader[8] |
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<< 8) & 0x0000FF00) + (((UINT32)subHeader[9]) & 0x000000FF); |
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rec->endID = (BYTE)subTrailer[1]; |
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|
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rec->McmdData = new TArrayC(dataLength, subData); |
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// delete [] subData; |
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} |
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else { |
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oss.str(""); |
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oss << "Wrong CRC on Subpacket internal to MCMD Packet "; |
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msg = oss.str(); |
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PamOffLineSW::mainLogUtil->logAll(msg); |
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} |
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|
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delete[] subData; |
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} |
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|
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if (start != length - 2) { |
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oss.str(""); |
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oss << "MCMD: Error in the MCMD Packet lenght (start!=length-2), it is not " << length; |
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msg = oss.str(); |
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PamOffLineSW::mainLogUtil->logWarning(msg); |
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} |
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|
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//in the end compare the calculated partial CRC with the MCMD packet CRC |
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readCRC = (((UINT16)(mysubData[length - 2] << 8)) & 0xFF00) + (((UINT16)mysubData[length - 1]) & 0x00FF); |
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//readCRC = (((UINT16)(mysubData[length - 1]<<8))&0xFF00) + (((UINT16)mysubData[length])&0x00FF); |
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// |
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// printf(" CICCIOEND readCRC %X partialCRC %X \n",(UINT16)readCRC,(UINT16)partialCRC); |
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// if(partialCRC != readCRC) throw WrongCRCException(" Wrong Global CRC for MCMD Packet "); |
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if (partialCRC != readCRC) { |
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oss.str(""); |
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oss << "Wrong CRC for MCMD Packet: " << " CRC COMPUTED= " << partialCRC << " CRC READ= " << readCRC; |
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msg = oss.str(); |
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PamOffLineSW::mainLogUtil->logWarning(msg); |
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throw WrongCRCException_PKTUsed(" Wrong CRC for MCMD Packet. "); |
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}; |
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} |
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