/[PAMELA software]/yoda/techmodel/physics/S4Reader.cpp
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Diff of /yoda/techmodel/physics/S4Reader.cpp

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revision 2.2 by kusanagi, Thu Dec 9 08:48:54 2004 UTC revision 4.4 by kusanagi, Sat May 28 10:44:13 2005 UTC
# Line 1  Line 1 
1  /** @file  /** @file
2   * $Source: /home/cvsmanager/yoda/techmodel/physics/S4Reader.cpp,v $   * $Source: /home/cvsmanager/yoda/techmodel/physics/S4Reader.cpp,v $
3   * $Id: S4Reader.cpp,v 2.1 2004/10/17 12:28:46 kusanagi Exp $   * $Id: S4Reader.cpp,v 4.2 2005/03/16 22:53:15 kusanagi Exp $
4   * $Author: kusanagi $   * $Author: kusanagi $
5   *   *
6   * Implementation of the S4Reader class.   * Implementation of the S4Reader class.
# Line 29  S4Reader::S4Reader(void): Line 29  S4Reader::S4Reader(void):
29   */   */
30  std::string S4Reader::GetVersionInfo(void) const {  std::string S4Reader::GetVersionInfo(void) const {
31    return    return
32      "$Header: /home/cvsmanager/yoda/techmodel/physics/S4Reader.cpp,v 2.1 2004/10/17 12:28:46 kusanagi Exp $";      "$Header: /home/cvsmanager/yoda/techmodel/physics/S4Reader.cpp,v 4.2 2005/03/16 22:53:15 kusanagi Exp $";
33  }  }
34    
35  /**  /**
# Line 55  void S4Reader::RunEvent(int EventNumber) Line 55  void S4Reader::RunEvent(int EventNumber)
55   * consequently supposing the Neutron data (12 Bytes) always present S4 start 18 Bytes before the end of the packet   * consequently supposing the Neutron data (12 Bytes) always present S4 start 18 Bytes before the end of the packet
56   */   */
57  void S4Reader::RunEvent(int EventNumber, const char subData[], long int length) {  void S4Reader::RunEvent(int EventNumber, const char subData[], long int length) {
58     //char *data = new char[lenght];     int offset;
59     //memcpy(data, subData, lenght);     int index = haveData(&*subData, length);
60     int offset = length - 18;    
61     s4->S4_REG_STATUS        = (((UINT8)subData[offset])&0xF0);     if (index > 0){
62     s4->S4_DATA              = ((((UINT16)subData[offset]<<8)&0x0FFF) + (((UINT16)subData[offset+1])&0x00FF));          int offset = length - index;
63     s4->S4_CMD_NUM           = (((UINT8)subData[offset+2])&0xFF);;          s4->S4_REG_STATUS        = (((UINT8)subData[offset])&0xF0);
64     s4->S4_RESP_LENGHT       = ((((UINT16)subData[offset+3]<<8)&0xFF00) + (((UINT16)subData[offset+4])&0x00FF));;          s4->S4_DATA              = ((((UINT16)subData[offset]<<8)&0x0FFF) + (((UINT16)subData[offset+1])&0x00FF));
65     s4->S4_OVERALL_CHKCODE   = (((UINT8)subData[offset+5])&0xFF);;          s4->S4_CMD_NUM           = (((UINT8)subData[offset+2])&0xFF);
66            s4->S4_RESP_LENGHT       = ((((UINT16)subData[offset+3]<<8)&0xFF00) + (((UINT16)subData[offset+4])&0x00FF));
67            s4->S4_OVERALL_CHKCODE   = (((UINT8)subData[offset+5])&0xFF);
68            s4->unpackError          = 0;
69        } else {
70            s4->unpackError = 1;
71        }
72  }  }
73    
74    /*
75     *
76     * @return int
77     * It return the index, starting from the end of data[] parameter, which
78     * is the starting byte of the S4 data.
79     *
80    */
81    /**
82     * Check if S4Data are present.
83     * @param const char data[] - Physics data
84     * @param long int lenght - Lenght of data[]
85     * @return int represent the index from the end of data[]
86     *             from which S4 data starts
87     */
88    int S4Reader::haveData(const char data[], long int length){
89        int ret = 0;
90        /* I start 20 bytes from the end because we have three cases:
91         *
92         * 1) S4 (4bytes) + NeutronDetector (12bytes) //END PACKET
93         * 2) S4 (4bytes) //END PACKET
94         * 3) //END PACKET
95         *
96         * so in anycase I expect to find the data into the last 20 bytes
97         * Anyway, it will be a MUST to implements also the check of the CRC
98         * on the S4 data to have a better confidence on the data; the crc algorithm
99         * sholud be the same of the Tracker
100         *
101         */
102            
103        //Check the existence of NeutronDetector data
104        if (((UINT8)data[length - 1] == 0x0F)&&((UINT8)data[length - 5] == 0x0F)&&((UINT8)data[length - 9] == 0x0F) &&
105            ((UINT8)data[length - 2] == 0x00)&&((UINT8)data[length - 6] == 0x00)&&((UINT8)data[length - 10] == 0x00)) {
106            //Chech the existance of S4 data before NeutronDetector
107            if (((UINT8)data[length - 14] == 0x03) &&
108                ((UINT8)data[length - 15] == 0x00) &&
109                ((UINT8)data[length - 16] == 0xD8)) ret = 18;
110          //NeutronDetector data does not exists    
111        } else {
112            //Chech the existance of S4 data at the end of the Physics packet
113            if ( ((UINT8)data[length - 2] == 0x03) &&
114                 ((UINT8)data[length - 3] == 0x00) &&
115                 ((UINT8)data[length - 4] == 0xD8)) ret = 6;
116        }
117        return ret;
118    }
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