UDPArincSensor.h

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// -*- mode: C++; indent-tabs-mode: nil; c-basic-offset: 4; tab-width: 4; -*-
// vim: set shiftwidth=4 softtabstop=4 expandtab:
/*
 ********************************************************************
 ** NIDAS: NCAR In-situ Data Acquistion Software
 **
 ** 2008, Copyright University Corporation for Atmospheric Research
 **
 ** This program is free software; you can redistribute it and/or modify
 ** it under the terms of the GNU General Public License as published by
 ** the Free Software Foundation; either version 2 of the License, or
 ** (at your option) any later version.
 **
 ** This program is distributed in the hope that it will be useful,
 ** but WITHOUT ANY WARRANTY; without even the implied warranty of
 ** MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 ** GNU General Public License for more details.
 **
 ** The LICENSE.txt file accompanying this software contains
 ** a copy of the GNU General Public License. If it is not found,
 ** write to the Free Software Foundation, Inc.,
 ** 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
 **
 ********************************************************************
*/
 
#ifndef _nidas_dynld_raf_arinc_udp_h_
#define _nidas_dynld_raf_arinc_udp_h_
 
#include <nidas/dynld/UDPSocketSensor.h>
#include <nidas/util/EndianConverter.h>
#include "AltaEnet.h"
 
 
namespace nidas { namespace dynld { namespace raf {
 
using namespace nidas::core;
 
 
class DSMArincSensor;
 
 
class UDPArincSensor : public UDPSocketSensor
{
 
public:
    UDPArincSensor();
    virtual ~UDPArincSensor();
 
    virtual void validate();
 
    virtual void open(int flags);
 
    virtual void close();
 
    virtual Sample* nextSample()
    {
        Sample *samp = UDPSocketSensor::nextSample();
 
        if (samp) {
            const char *input = (const char *)samp->getConstVoidDataPtr();
            if (input[0] == 'S')      // status packet
                extractStatus(input, samp->getDataByteLength());
        }
        return samp;
    }
 
    void extractStatus(const char *msg, int len);
 
    void printStatus(std::ostream& ostr) throw();
 
 
    bool process(const Sample* samp,std::list<const Sample*>& results);
 
    void registerArincSensor(int channel, DSMArincSensor* sensor)
    { _arincSensors[channel] = sensor; }
 
 
protected:
    // Methods to decode pieces of the APMP and RXP packets.
    unsigned long decodeIRIG(unsigned char *);
    long long decodeTIMER(const rxp&);
    int bcd_to_decimal(unsigned char x) { return x - 6 * (x >> 4); }
 
    // Data ships Big Endian.
    static const nidas::util::EndianConverter * bigEndian;
 
    unsigned int    _prevAPMPseqNum, _badAPMPseqCnt;
    unsigned int    _prevRXPseqNum[8], _badRXPseqCnt[8];
    unsigned int    _badStatusCnt;
 
    std::string     _ipAddr;
 
    unsigned int    _statusPort;
 
    static const int MAX_CHANNELS;
 
    std::map<std::string, int> configStatus;
 
 
private:
    //  PID for process that intializes and controls ENET unit.
    pid_t _ctrl_pid;
 
    // Decoded IRIG time for a given APMP packet.
    char irigHHMMSS[32];
 
    // Channel #, AltaARINC sensor.
    std::map<int, DSMArincSensor*> _arincSensors;
};
 
}}}                     // namespace nidas namespace dynld namespace raf
#endif