DPAuxChannelDecoder.h

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* libscopeprotocols                                                                                                    *
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* Copyright (c) 2012-2023 Andrew D. Zonenberg and contributors                                                         *
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#ifndef DPAuxChannelDecoder_h
#define DPAuxChannelDecoder_h
 
#include "../scopehal/PacketDecoder.h"
 
class DPAuxSymbol
{
public:
    enum stype
    {
        TYPE_ERROR,
        TYPE_PREAMBLE,
        TYPE_SYNC,
        TYPE_COMMAND,
        TYPE_ADDRESS,
        TYPE_I2C_ADDRESS,
        TYPE_LEN,
        TYPE_PAD,
        TYPE_AUX_REPLY,
        TYPE_I2C_REPLY,
        TYPE_DATA,
        TYPE_STOP
    };
 
    DPAuxSymbol()
    {}
 
    DPAuxSymbol(stype t, uint32_t d = 0)
     : m_stype(t)
     , m_data(d)
    {}
 
    stype m_stype;
    uint32_t m_data;
 
    bool operator== (const DPAuxSymbol& s) const
    {
        return (m_stype == s.m_stype) && (m_data == s.m_data);
    }
};
 
class DPAuxWaveform : public SparseWaveform<DPAuxSymbol>
{
public:
    DPAuxWaveform () : SparseWaveform<DPAuxSymbol>() {};
    virtual std::string GetText(size_t) override;
    virtual std::string GetColor(size_t) override;
};
 
class DPAuxChannelDecoder : public PacketDecoder
{
public:
    DPAuxChannelDecoder(const std::string& color);
    virtual ~DPAuxChannelDecoder();
 
    virtual void Refresh() override;
    static std::string GetProtocolName();
 
    virtual bool ValidateChannel(size_t i, StreamDescriptor stream) override;
    virtual std::vector<std::string> GetHeaders() override;
 
    virtual bool CanMerge(Packet* first, Packet* cur, Packet* next) override;
    virtual Packet* CreateMergedHeader(Packet* pack, size_t i) override;
 
    PROTOCOL_DECODER_INITPROC(DPAuxChannelDecoder)
 
protected:
    bool FindFallingEdge(size_t& i, UniformAnalogWaveform* cap);
    bool FindRisingEdge(size_t& i, UniformAnalogWaveform* cap);
 
    std::string DecodeRegisterName(uint32_t nreg);
    std::string DecodeRegisterContent(uint32_t start_addr, const std::vector<uint8_t>& data);
 
    bool FindEdge(size_t& i, UniformAnalogWaveform* cap, bool polarity)
    {
        if(polarity)
            return FindRisingEdge(i, cap);
        else
            return FindFallingEdge(i, cap);
    }
 
    enum
    {
        CAP_FORMAT_1BYTE,
        CAP_FORMAT_4BYTE,
        CAP_FORMAT_UNKNOWN
    } m_capFormat;
 
    enum
    {
        DFP_TYPE_VGA,
        DFP_TYPE_DVI,
        DFP_TYPE_DP,
        DFP_TYPE_HDMI,
        DFP_TYPE_DP_PP,
        DFP_TYPE_WIRELESS,
        DFP_TYPE_UNKNOWN
    } m_dfpType;
 
    int m_dcpdRevision;
};
 
#endif