#if !defined(_L1C8051_H)
#define _L1C8051_H

#if defined(__BORLANDC__) || defined(__WIN32)
#include <windows.h>
#endif
#include "utils.h"

struct deviceHeader_t
{
  unsigned char cmd;
  unsigned char dummy;
  unsigned short length;

  static const unsigned char Data = 0x1;
  static const unsigned char DataAcknowledge = 0x2; // Deprecated
  static const unsigned char Status = 0x3;
  static const unsigned char StatusRequest = 0x4;
  static const unsigned char FlushRequest = 0x5;  // Deprecated
  static const unsigned char PacketRequest = 0x6;
  static const unsigned char GenerateLHCbEvent = 0x7;
  static const unsigned char PIOWriteRequest = 0x8;
  static const unsigned char PIOReadRequest = 0x9;
  static const unsigned char GenerateALICEEvent = 0xa;
  static const unsigned char ResetRequest = 0xb;
  static const unsigned char ConfigurationData = 0xc;
  static const unsigned char Int0Enable = 0xd;
  static const unsigned char Int0Disable = 0xe;
  static const unsigned char Int0 = 0xf;
  static const unsigned char GenerateClockBurst = 0x10;
  static const unsigned char ReadAddress = 0x11;
  static const unsigned char L1ResetRequest = 0x12;
  static const unsigned char Idle = 0xa5;
  static const unsigned char Idle2 = 0x25;
};

struct statusData_t
{
  unsigned short generalStatus;                // General status
  unsigned short e100MDI[4];                   // E100 registers
  unsigned short TTCL0Count;
  unsigned short bufferCount[2];
  unsigned short eventCount[2];
  unsigned char parityErrorCount[4];
  unsigned short txd[2];
  unsigned short TTCIdSense;
  unsigned short egressCount;
  unsigned short channelStatus[12];
  unsigned char TTCControlRegisterId;
  unsigned char TTCControlRegister;
  unsigned char TTCBunchCounterRegister;
  unsigned char TTCBunchCounterRegisterId;
  unsigned char TTCEventCounterLowRegister;
  unsigned char TTCEventCounterLowRegisterId;
  unsigned char TTCEventCounterHighRegister;
  unsigned char TTCEventCounterHighRegisterId;
};

struct configData_t
{
  unsigned char Id;                // Register ID
  unsigned char dummy;
  unsigned short Data;             // Register value
};

struct devicePacket_t
{
  unsigned char cmd;
  unsigned char dummy;
  unsigned short length;
  union
  {
    unsigned char uc[64];
    unsigned short us[32];
    unsigned ui[16];
    statusData_t status;
    configData_t config;
  };
};

typedef void * L1C8051ID;

const SI_STATUS SI_WRITE_UNDERRUN = 0xa;

// C-callable interface

int L1C8051Open( L1C8051ID *, char *, unsigned );
int L1C8051Close( L1C8051ID );
void L1C8051ShowErrorTrace( L1C8051ID );
int L1C8051Dispatch( L1C8051ID, devicePacket_t &, unsigned );
int L1C8051Receive( L1C8051ID, devicePacket_t &, unsigned );
int L1C8051DispatchTriggerBurstRequest( L1C8051ID, unsigned, unsigned );
int L1C8051DispatchConfiguration( L1C8051ID, unsigned, unsigned );
void L1C8051ShowLastStatus( L1C8051ID, devicePacket_t & );
void L1C8051ShowLastData( L1C8051ID, devicePacket_t & );
unsigned L1C8051FlushBuffer( L1C8051ID, unsigned, bool );

class l1c8051
{
 protected:
  HANDLE deviceHandle;
  tracestream errors;
  tracestream trace;

 public:
  l1c8051( const char *, unsigned );
  ~l1c8051();
  operator void*(){ return errors.tellp() > 0 ? 0 : this; }
  bool operator !(){ return errors.tellp() <= 0 ? false : true; }
  void showErrorTrace();
  void showInfoTrace();

  // Low level message read/write functions

  void dispatch( devicePacket_t &, unsigned );
  void receive( devicePacket_t &, unsigned );

  // Higher level/compound messages

  void dispatchTriggerBurstRequest( unsigned, unsigned );
  unsigned flushBuffer( unsigned, bool );
  
  // Utility functions

  void showLastStatus( devicePacket_t & );
  void showLastData( devicePacket_t & );
};

#endif