//------------------------------------------------------------------------------
// Generic CAN Message
// by Pierre Molinaro
//
// This file is common to the following libraries
// https://github.com/pierremolinaro/acan
// https://github.com/pierremolinaro/acan2515
// https://github.com/pierremolinaro/acan2517
// https://github.com/pierremolinaro/acan2517FD
//
//------------------------------------------------------------------------------

#ifndef GENERIC_CAN_MESSAGE_DEFINED
#define GENERIC_CAN_MESSAGE_DEFINED

//------------------------------------------------------------------------------

#include <Arduino.h>

//------------------------------------------------------------------------------

class CANMessage {
  public : uint32_t id = 0 ;  // Frame identifier
  public : bool ext = false ; // false -> standard frame, true -> extended frame
  public : bool rtr = false ; // false -> data frame, true -> remote frame
  public : uint8_t idx = 0 ;  // This field is used by the driver
  public : uint8_t len = 0 ;  // Length of data (0 ... 8)
  public : union {
    uint64_t data64        ; // Caution: subject to endianness
    int64_t  data_s64      ; // Caution: subject to endianness
    uint32_t data32    [2] ; // Caution: subject to endianness
    int32_t  data_s32  [2] ; // Caution: subject to endianness
    float    dataFloat [2] ; // Caution: subject to endianness
    uint16_t data16    [4] ; // Caution: subject to endianness
    int16_t  data_s16  [4] ; // Caution: subject to endianness
    int8_t   data_s8   [8] ;
    uint8_t  data      [8] = {0, 0, 0, 0, 0, 0, 0, 0} ;
  } ;
} ;

//------------------------------------------------------------------------------

typedef enum {kStandard, kExtended} tFrameFormat ;
typedef enum {kData, kRemote} tFrameKind ;
typedef void (*ACANCallBackRoutine) (const CANMessage & inMessage) ;

//------------------------------------------------------------------------------

#endif
