popoto_driver.h

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// Copyright 2020-2021:
//   GobySoft, LLC (2013-)
//   Community contributors (see AUTHORS file)
// File authors:
//   Toby Schneider <toby@gobysoft.org>
//   Thomas McCabe <tom.mccabe@missionsystems.com.au>
//
//
// This file is part of the Goby Underwater Autonomy Project Libraries
// ("The Goby Libraries").
//
// The Goby Libraries are free software: you can redistribute them and/or modify
// them under the terms of the GNU Lesser General Public License as published by
// the Free Software Foundation, either version 2.1 of the License, or
// (at your option) any later version.
//
// The Goby Libraries are distributed in the hope that they 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 Goby.  If not, see <http://www.gnu.org/licenses/>.
 
/************************************************************/
/*    NAME: Thomas McCabe                                   */
/*    ORGN: Mission Systems Pty Ltd                         */
/*    FILE: Popoto.h                                        */
/*    DATE: Aug 20 2020                                     */
/************************************************************/
 
/* Copyright (c) 2020 mission systems pty ltd */
 
#ifndef GOBY_ACOMMS_MODEMDRIVER_POPOTO_DRIVER_H
#define GOBY_ACOMMS_MODEMDRIVER_POPOTO_DRIVER_H
 
#include <cstddef> // for size_t
#include <cstdint> // for uint8_t
#include <map>      // for map
#include <string>   // for string
#include <vector>   // for vector
 
#include "goby/acomms/modemdriver/driver_base.h"   // for ModemDriverBase
#include "goby/acomms/protobuf/driver_base.pb.h"   // for DriverConfig
#include "goby/acomms/protobuf/modem_message.pb.h" // for ModemTransmission
#include "goby/acomms/protobuf/popoto_driver.pb.h" // for Config, MessageTy...
#include "goby/util/thirdparty/nlohmann/json.hpp"  // for json
 
namespace goby
{
namespace acomms
{
class PopotoDriver : public ModemDriverBase
{
  public:
    PopotoDriver();
    ~PopotoDriver() override;
 
    void startup(const protobuf::DriverConfig& cfg) override;
    void shutdown() override;
    void do_work() override;
    void handle_initiate_transmission(const protobuf::ModemTransmission& m) override;
    void send(protobuf::ModemTransmission& msg);
    void play_file(protobuf::ModemTransmission& msg);
    void send_ping(protobuf::ModemTransmission& msg);
    void send_wake(void);
    void send_range_request(int dest);
    void popoto_sleep(void);
 
  private:
    void parse_in(const std::string& in, std::map<std::string, std::string>* out);
    void signal_and_write(const std::string& raw);
 
    std::uint8_t CreateGobyHeader(const protobuf::ModemTransmission& m);
 
    void DecodeHeader(std::vector<uint8_t> data, protobuf::ModemTransmission& m);
    void DecodeGobyHeader(std::uint8_t header, protobuf::ModemTransmission& m);
    void ProcessJSON(const std::string& message, protobuf::ModemTransmission& m);
 
    const popoto::protobuf::Config& popoto_driver_cfg() const
    {
        return driver_cfg_.GetExtension(popoto::protobuf::config);
    }
 
    static std::string json_to_binary(const nlohmann::json& element);
    static std::string binary_to_json(const std::uint8_t* buf, size_t num_bytes);
    static std::string StripString(std::string in, const std::string& p);
 
  private:
    protobuf::DriverConfig driver_cfg_;
    int sender_id_{0};
    protobuf::ModemTransmission modem_msg_;
 
    static constexpr int DEFAULT_BAUD{115200};
    static constexpr int DEFAULT_MTU_BYTES{1024};
    static constexpr int POPOTO_BROADCAST_ID{255};
 
    enum GobyHeaderBits
    {
        GOBY_HEADER_TYPE = 0,       // 0 == Data, 1 == Ack
        GOBY_HEADER_ACK_REQUEST = 1 // 0 == no ack requested, 1 == ack requested
    };
};
} // namespace acomms
} // namespace goby
 
#endif