TlmPacketizer.hpp

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// ======================================================================
// \title  TlmPacketizerImpl.hpp
// \author tcanham
// \brief  hpp file for TlmPacketizer component implementation class
//
// \copyright
// Copyright 2009-2015, by the California Institute of Technology.
// ALL RIGHTS RESERVED.  United States Government Sponsorship
// acknowledged.
 
#ifndef TlmPacketizer_HPP
#define TlmPacketizer_HPP
 
#include "Os/Mutex.hpp"
#include "Svc/TlmPacketizer/TlmPacketizerComponentAc.hpp"
#include "Svc/TlmPacketizer/TlmPacketizerTypes.hpp"
#include "TlmPacketizerCfg.hpp"
 
namespace Svc {
 
class TlmPacketizer : public TlmPacketizerComponentBase {
  public:
    // ----------------------------------------------------------------------
    // Construction, initialization, and destruction
    // ----------------------------------------------------------------------
 
    TlmPacketizer(const char* const compName 
    );
 
    void init(const NATIVE_INT_TYPE queueDepth,  
              const NATIVE_INT_TYPE instance = 0 
    );
 
    void setPacketList(
        const TlmPacketizerPacketList& packetList,   // channels to packetize
        const Svc::TlmPacketizerPacket& ignoreList,  // channels to ignore (i.e. no warning event if not packetized)
        const NATIVE_UINT_TYPE startLevel);          // starting level of packets to send
 
    ~TlmPacketizer(void);
 
  PRIVATE:
    // ----------------------------------------------------------------------
    // Handler implementations for user-defined typed input ports
    // ----------------------------------------------------------------------
 
    void TlmRecv_handler(const NATIVE_INT_TYPE portNum, 
                         FwChanIdType id,               
                         Fw::Time& timeTag,             
                         Fw::TlmBuffer& val             
    );
 
    void Run_handler(const NATIVE_INT_TYPE portNum, 
                     NATIVE_UINT_TYPE context       
    );
 
    void pingIn_handler(const NATIVE_INT_TYPE portNum, 
                        U32 key                        
    );
 
    void SET_LEVEL_cmdHandler(const FwOpcodeType opCode, 
                              const U32 cmdSeq,          
                              U32 level                  
    );
 
    void SEND_PKT_cmdHandler(const FwOpcodeType opCode, 
                             const U32 cmdSeq,          
                             U32 id                     
    );
 
    // number of packets to fill
    NATIVE_UINT_TYPE m_numPackets;
    // Array of packet buffers to send
    // Double-buffered to fill one while sending one
 
    struct BufferEntry {
        Fw::ComBuffer buffer;    
        Fw::Time latestTime;     
        NATIVE_UINT_TYPE id;     
        NATIVE_UINT_TYPE level;  
        bool updated;            
        bool requested;          
    };
 
    // buffers for filling with telemetry
    BufferEntry m_fillBuffers[MAX_PACKETIZER_PACKETS];
    // buffers for sending - will be copied from fill buffers
    BufferEntry m_sendBuffers[MAX_PACKETIZER_PACKETS];
 
    struct TlmEntry {
        FwChanIdType id;  
        // Offsets into packet buffers.
        // -1 means that channel is not in that packet
        NATIVE_INT_TYPE packetOffset[MAX_PACKETIZER_PACKETS];
        TlmEntry* next;             
        bool used;                  
        bool ignored;               
        NATIVE_UINT_TYPE bucketNo;  
    };
 
    struct TlmSet {
        TlmEntry* slots[TLMPACKETIZER_NUM_TLM_HASH_SLOTS];  
        TlmEntry buckets[TLMPACKETIZER_HASH_BUCKETS];       
        NATIVE_UINT_TYPE free;                              
    } m_tlmEntries;
 
    // hash function for looking up telemetry channel
    NATIVE_UINT_TYPE doHash(FwChanIdType id);
 
    Os::Mutex m_lock;  
 
    bool m_configured;  
 
    struct MissingTlmChan {
        FwChanIdType id;
        bool checked;
    } m_missTlmCheck[TLMPACKETIZER_MAX_MISSING_TLM_CHECK];
 
    void missingChannel(FwChanIdType id);  
 
    TlmEntry* findBucket(FwChanIdType id);
 
    NATIVE_UINT_TYPE m_startLevel;  
    NATIVE_UINT_TYPE m_maxLevel;    
};
 
}  // end namespace Svc
 
#endif