modbus_msg_operation_mode_wrapper.h

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/*
 * Copyright (c) 2019 Pilz GmbH & Co. KG
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU Lesser General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.

 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Lesser General Public License for more details.

 * You should have received a copy of the GNU Lesser General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */
#ifndef MODBUS_MSG_OPERATION_MODE_WRAPPER_H
#define MODBUS_MSG_OPERATION_MODE_WRAPPER_H

#include <prbt_hardware_support/ModbusMsgInStamped.h>
#include <prbt_hardware_support/OperationModes.h>
#include <prbt_hardware_support/modbus_api_spec.h>
#include <prbt_hardware_support/modbus_msg_wrapper.h>
#include <prbt_hardware_support/modbus_msg_operation_mode_wrapper_exception.h>

namespace prbt_hardware_support
{

class ModbusMsgOperationModeWrapper : public ModbusMsgWrapper
{
public:
  ModbusMsgOperationModeWrapper(const ModbusMsgInStampedConstPtr& modbus_msg_raw, const ModbusApiSpec& api_spec);

  virtual void checkStructuralIntegrity() const override;

  int8_t getOperationMode() const;

  OperationModes getTimeStampedOperationMode() const;

private:

  bool hasOperationMode() const;
};

inline ModbusMsgOperationModeWrapper::ModbusMsgOperationModeWrapper(const ModbusMsgInStampedConstPtr& modbus_msg_raw,
                                                                    const ModbusApiSpec& api_spec):
  ModbusMsgWrapper(modbus_msg_raw, api_spec)
{
}

inline bool ModbusMsgOperationModeWrapper::hasOperationMode() const
{
  return hasRegister(getApiSpec().getRegisterDefinition(modbus_api_spec::OPERATION_MODE));
}

inline int8_t ModbusMsgOperationModeWrapper::getOperationMode() const
{
  switch(getRegister(getApiSpec().getRegisterDefinition(modbus_api_spec::OPERATION_MODE)))
  {
    case 0:
            return OperationModes::UNKNOWN;
    case 1:
            return OperationModes::T1;
    case 2:
            return OperationModes::T2;
    case 3:
            return OperationModes::AUTO;
    default:
            return OperationModes::UNKNOWN;
  }
}

inline OperationModes ModbusMsgOperationModeWrapper::getTimeStampedOperationMode() const
{
  OperationModes op_mode;
  op_mode.time_stamp = getTimeStamp();
  op_mode.value = getOperationMode();
  return op_mode;
}

inline void ModbusMsgOperationModeWrapper::checkStructuralIntegrity() const
{
  ModbusMsgWrapper::checkStructuralIntegrity();

  if(!hasOperationMode())
  {
    throw ModbusMsgOperationModeWrapperException("Received message does not contain information about the operation mode.");
  }
}

}

#endif // MODBUS_MSG_OPERATION_MODE_WRAPPER_H