DMRTX.h

/*
 *   Copyright (C) 2015,2016,2017,2020 by Jonathan Naylor G4KLX
 *   Copyright (C) 2016 by Colin Durbridge G4EML
 *
 *   This program is free software; you can redistribute it and/or modify
 *   it under the terms of the GNU General Public License as published by
 *   the Free Software Foundation; either version 2 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 General Public License for more details.
 *
 *   You should have received a copy of the GNU General Public License
 *   along with this program; if not, write to the Free Software
 *   Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 */

#include "Config.h"

#if defined(MODE_DMR)

#if !defined(DMRTX_H)
#define  DMRTX_H

#include "DMRDefines.h"

#include "RingBuffer.h"

enum DMRTXSTATE {
  DMRTXSTATE_IDLE,
  DMRTXSTATE_SLOT1,
  DMRTXSTATE_CACH1,
  DMRTXSTATE_SLOT2,
  DMRTXSTATE_CACH2,
  DMRTXSTATE_CAL
};

class CDMRTX {
public:
  CDMRTX();

  uint8_t writeData1(const uint8_t* data, uint16_t length);
  uint8_t writeData2(const uint8_t* data, uint16_t length);

  uint8_t writeShortLC(const uint8_t* data, uint16_t length);
  uint8_t writeAbort(const uint8_t* data, uint16_t length);

  void setStart(bool start);
  void setCal(bool start);

  void process();
  
  void resetFifo1();
  void resetFifo2();
  uint32_t getFrameCount();
  
  uint8_t getSpace1() const;
  uint8_t getSpace2() const;

  void setColorCode(uint8_t colorCode);

private:
  CRingBuffer<uint8_t>                        m_fifo[2U];
  arm_fir_interpolate_instance_q15 m_modFilter;
  q15_t                            m_modState[16U];    // blockSize + phaseLength - 1, 4 + 9 - 1 plus some spare
  DMRTXSTATE                       m_state;
  uint8_t                          m_idle[DMR_FRAME_LENGTH_BYTES];
  uint8_t                          m_cachPtr;
  uint8_t                          m_shortLC[12U];
  uint8_t                          m_newShortLC[12U];
  uint8_t                          m_markBuffer[40U];
  uint8_t                          m_poBuffer[40U];
  uint16_t                         m_poLen;
  uint16_t                         m_poPtr;
  uint32_t                         m_frameCount;
  uint32_t                         m_abortCount[2U];
  bool                             m_abort[2U];

  void createData(uint8_t slotIndex);
  void createCACH(uint8_t txSlotIndex, uint8_t rxSlotIndex);
  void createCal();
  void writeByte(uint8_t c, uint8_t control);
};

#endif

#endif