mirror of https://github.com/g4klx/MMDVM.git
64 lines
1.7 KiB
C++
64 lines
1.7 KiB
C++
/*
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* Copyright (C) 2020 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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#include "Config.h"
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#if defined(MODE_AX25)
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#if !defined(AX25RX_H)
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#define AX25RX_H
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#include "AX25Demodulator.h"
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class CAX25RX {
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public:
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CAX25RX();
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void samples(q15_t* samples, uint8_t length);
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void setParams(int8_t twist, uint8_t slotTime, uint8_t pPersist);
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bool canTX() const;
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private:
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arm_fir_instance_q15 m_filter;
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q15_t m_state[160U]; // NoTaps + BlockSize - 1, 130 + 20 - 1 plus some spare
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CAX25Demodulator m_demod1;
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CAX25Demodulator m_demod2;
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CAX25Demodulator m_demod3;
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uint16_t m_lastFCS;
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uint32_t m_count;
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uint32_t m_slotTime;
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uint32_t m_slotCount;
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uint8_t m_pPersist;
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bool m_dcd;
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bool m_canTX;
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uint8_t m_x;
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uint8_t m_a;
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uint8_t m_b;
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uint8_t m_c;
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void initRand();
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uint8_t rand();
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};
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#endif
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#endif
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