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127 lines
4.3 KiB
127 lines
4.3 KiB
/*
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* Copyright (C) 2011-2014 by Jonathan Naylor G4KLX
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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*/
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#ifndef DVRPTRV2Controller_H
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#define DVRPTRV2Controller_H
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#include "SerialDataController.h"
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#include "TCPReaderWriter.h"
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#include "DStarDefines.h"
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#include "RingBuffer.h"
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#include "Modem.h"
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#include "Utils.h"
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#include "StdCompat.h"
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#include <string>
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enum RESP_TYPE_V2 {
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RT2_TIMEOUT,
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RT2_ERROR,
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RT2_UNKNOWN,
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RT2_SPACE,
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RT2_QUERY,
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RT2_CONFIG,
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RT2_HEADER,
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RT2_DATA
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};
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/*
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* CDVRPTRV2Controller - Driver for DV-RPTR V2 boards.
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*
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* Supports two physical connection types, selected by constructor:
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* CT_USB - USB CDC-ACM serial port (same as V1).
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* CT_NETWORK - TCP socket (address + port); used for networked / remote modems.
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*
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* The CONNECTION_TYPE flag (m_connection) controls which of the two backing
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* objects (m_usb / m_network) is used; readModem(), writeModem(), closeModem()
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* dispatch through it uniformly so the rest of the logic is connection-agnostic.
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*
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* Protocol: ASCII-framed "HEAD" protocol (distinct from the binary DVRPTR protocol
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* used by V1). Each frame starts with the 4-byte magic "HEAD" followed by a
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* 1-byte type character:
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* 'X' - 105-byte control/header frame (HEADX)
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* 'Y' - 10-byte space/status frame (HEADY)
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* 'Z' - 20-byte voice data frame (HEADZ)
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* Frame subtypes are identified by 4 ASCII digits at bytes [5..8].
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*
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* On startup the driver sends a HEADX/9000 query to get the hardware serial,
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* then HEADX/9001 to configure the modem (callsign, duplex, modLevel, txDelay).
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* During operation the driver polls HEADY/9011 every 250ms to get TX buffer space.
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*
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* The header frame (HEADX/0002) also contains the first DV frame of the
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* transmission (at byte offset 51), so the repeater receives both the D-Star
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* header and the first voice frame in a single network packet.
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*
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* Reconnection works identically to V1: findPort() -> openModem() retried every 2s.
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*/
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class CDVRPTRV2Controller : public CModem {
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public:
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// USB serial connection.
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CDVRPTRV2Controller(const std::string& port, const std::string& path, bool txInvert, unsigned int modLevel, bool duplex, const std::string& callsign, unsigned int txDelay);
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// TCP network connection.
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CDVRPTRV2Controller(const std::string& address, unsigned int port, bool txInvert, unsigned int modLevel, bool duplex, const std::string& callsign, unsigned int txDelay);
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virtual ~CDVRPTRV2Controller();
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virtual bool start();
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virtual unsigned int getSpace();
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virtual bool isTXReady();
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virtual bool writeHeader(const CHeaderData& header);
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virtual bool writeData(const unsigned char* data, unsigned int length, bool end);
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virtual std::string getPath() const;
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private:
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void entry();
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CONNECTION_TYPE m_connection;
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std::string m_usbPort;
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std::string m_usbPath;
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std::string m_address;
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unsigned int m_port;
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bool m_txInvert;
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unsigned int m_modLevel;
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bool m_duplex;
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std::string m_callsign;
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unsigned int m_txDelay;
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CSerialDataController* m_usb;
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CTCPReaderWriter* m_network;
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unsigned char* m_buffer;
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CRingBuffer<unsigned char> m_txData;
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bool m_rx;
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bool readSerial();
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bool setConfig();
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bool readSpace();
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RESP_TYPE_V2 getResponse(unsigned char* buffer, unsigned int& length);
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bool findPort();
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bool findPath();
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bool findModem();
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bool openModem();
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int readModem(unsigned char* buffer, unsigned int length);
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bool writeModem(const unsigned char* buffer, unsigned int length);
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void closeModem();
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};
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#endif
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