#ifndef ENUMS_H
#define ENUMS_H

enum MB_FC
{
  MB_FC_NONE = 0,                     /*!< null operator */
  MB_FC_READ_COILS = 1,               /*!< FCT=1 -> read coils or digital outputs */
  MB_FC_READ_DISCRETE_INPUT = 2,      /*!< FCT=2 -> read digital inputs */
  MB_FC_READ_REGISTERS = 3,           /*!< FCT=3 -> read registers or analog outputs */
  MB_FC_READ_INPUT_REGISTER = 4,      /*!< FCT=4 -> read analog inputs */
  MB_FC_WRITE_COIL = 5,               /*!< FCT=5 -> write single coil or output */
  MB_FC_WRITE_REGISTER = 6,           /*!< FCT=6 -> write single register */
  MB_FC_WRITE_MULTIPLE_COILS = 15,    /*!< FCT=15 -> write multiple coils or outputs */
  MB_FC_WRITE_MULTIPLE_REGISTERS = 16 /*!< FCT=16 -> write multiple registers */
};

enum ERROR
{
  ERROR_OK = 0,
  ERROR_WARNING = 1,
  ERROR_FATAL = 2
};

enum MBB_STATE
{
  WAITING = 0,
  QUERY = 1,
  RESPONSE = 2,
  IDLE = 3
};

// Modbus query state
enum QUERY_STATE
{
  QUEUED = 1,
  PROCESSING = 2,
  SENT = 3,
  RESPONDED = 4,
  DONE = 5
};

#define ku8MBReadCoils 0x01          ///< Modbus function 0x01 Read Coils
#define ku8MBReadDiscreteInputs 0x02 ///< Modbus function 0x02 Read Discrete Inputs
#define ku8MBWriteSingleCoil 0x05    ///< Modbus function 0x05 Write Single Coil
#define ku8MBWriteMultipleCoils 0x0F ///< Modbus function 0x0F Write Multiple Coils

// Modbus function codes for 16 bit access
#define ku8MBReadHoldingRegisters 0x03       ///< Modbus function 0x03 Read Holding Registers
#define ku8MBReadInputRegisters 0x04         ///< Modbus function 0x04 Read Input Registers
#define ku8MBWriteSingleRegister 0x06        ///< Modbus function 0x06 Write Single Register
#define ku8MBWriteMultipleRegisters 0x10     ///< Modbus function 0x10 Write Multiple Registers
#define ku8MBMaskWriteRegister 0x16          ///< Modbus function 0x16 Mask Write Register
#define ku8MBReadWriteMultipleRegisters 0x17 ///< Modbus function 0x17 Read Write Multiple Registers
#define ku8MBLinkTestOmronMX2Only 0x08       ///< Modbus function 0x08 Test

// Modbus protocol errors
#define ERR_MODBUS_0x01 -41   // Modbus 0x01 protocol illegal function exception
#define ERR_MODBUS_0x02 -42   // Modbus 0x02 protocol illegal data address exception
#define ERR_MODBUS_0x03 -43   // Modbus 0x03 protocol illegal data value exception
#define ERR_MODBUS_0x04 -44   // Modbus 0x4 protocol slave device failure exception
#define ERR_MODBUS_0xe0 -45   // Modbus 0xe0 Master invalid response slave ID exception
#define ERR_MODBUS_0xe1 -46   // Modbus 0xe1 Master invalid response function exception
#define ERR_MODBUS_0xe2 -47   // Modbus 0xe2 Master response timed out exception
#define ERR_MODBUS_0xe3 -48   // Modbus 0xe3 Master invalid response CRC exception
#define ERR_MODBUS_UNKNOW -56 // Modbus unknown error (protocol failure)
#define ERR_MODBUS_STATE -57  // Forbidden ( invalid ) state of the inverter
#define ERR_MODBUS_BLOCK -58  // Attempt to turn on the VT with the inverter locked

// Omron Mx2 specific
#define ERR_MODBUS_MX2_0x01 -49 // Omron mx2 Exception code 0x01 The specified function is not supported
#define ERR_MODBUS_MX2_0x02 -50 // Omron mx2 Exception code 0x02 The specified function was not found.
#define ERR_MODBUS_MX2_0x03 -52 // Omron mx2 Exception code 0x03 Unacceptable data format
#define ERR_MODBUS_MX2_0x05 -52 // Omron mx2 communication error over Modbus (function communication check 0x08 Omron mx2)
#define ERR_MODBUS_MX2_0x21 -53 // Omron mx2 Exception code 0x21 Data written to the storage register is outside the inverter
#define ERR_MODBUS_MX2_0x22 -54 // Omron mx2 Exception code 0x22 These functions are not available for the inverter
#define ERR_MODBUS_MX2_0x23 -55 // Omron mx2 Exception code 0x23 The register (bit) into which the value should be written is read-only

//////////////////////////////////////////////////////////////////
//
//  PH - Firmware specific register mapping - TCP & RS485
//




#endif