Initial commit

DMRSlotRX.h

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+/*
+ *   Copyright (C) 2015 by Jonathan Naylor G4KLX
+ *
+ *   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.
+ */
+
+#if !defined(DMRSLOTRX_H)
+#define  DMRSLOTRX_H
+
+#include "Config.h"
+#include "DMRDefines.h"
+
+class CDMRSlotRX {
+public:
+  CDMRSlotRX(bool slot);
+
+  void start();
+
+  bool processSample(q15_t sample);
+
+  void stop();
+
+  void setColorCode(uint8_t colorCode);
+
+  void reset();
+
+private:
+  bool     m_slot;
+  uint32_t m_bitBuffer[DMR_RADIO_SYMBOL_LENGTH];
+  q15_t    m_buffer[900U];
+  uint16_t m_bitPtr;
+  uint16_t m_dataPtr;
+  uint16_t m_endPtr;
+  q31_t    m_maxCorr;
+  q15_t    m_centre;
+  q15_t    m_threshold;
+  uint8_t  m_control;
+  uint8_t  m_syncCount;
+  uint8_t  m_colorCode;
+  bool     m_receiving;
+  uint8_t  m_n;
+
+  void    correlateSync(q15_t sample);
+  void    samplesToBits(uint16_t start, uint8_t count, uint8_t* buffer, uint16_t offset, q15_t centre, q15_t threshold);
+};
+
+#endif
+