mirror of https://github.com/g4klx/MMDVM.git
87 lines
2.7 KiB
C++
87 lines
2.7 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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#if !defined(FM_H)
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#define FM_H
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#include "Config.h"
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#include "FMCTCSSRX.h"
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#include "FMCTCSSTX.h"
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#include "FMTimeout.h"
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#include "FMKeyer.h"
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#include "FMTimer.h"
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enum FM_STATE {
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FS_LISTENING,
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FS_KERCHUNK,
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FS_RELAYING,
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FS_RELAYING_WAIT,
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FS_TIMEOUT,
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FS_TIMEOUT_WAIT,
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FS_HANG
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};
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class CFM {
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public:
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CFM();
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void samples(q15_t* samples, uint8_t length);
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void process();
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void reset();
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uint8_t setCallsign(const char* callsign, uint8_t speed, uint16_t frequency, uint8_t time, uint8_t holdoff, uint8_t level, bool callsignAtStart, bool callsignAtEnd);
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uint8_t setAck(const char* rfAck, uint8_t speed, uint16_t frequency, uint8_t minTime, uint16_t delay, uint8_t level);
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uint8_t setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime);
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private:
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arm_fir_instance_q15 m_filter;
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q15_t m_filterState[130U]; // NoTaps + BlockSize - 1, 101 + 20 - 1 plus some spare
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CFMKeyer m_callsign;
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CFMKeyer m_rfAck;
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CFMCTCSSRX m_ctcssRX;
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CFMCTCSSTX m_ctcssTX;
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CFMTimeout m_timeoutTone;
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FM_STATE m_state;
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bool m_callsignAtStart;
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bool m_callsignAtEnd;
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CFMTimer m_callsignTimer;
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CFMTimer m_timeoutTimer;
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CFMTimer m_holdoffTimer;
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CFMTimer m_kerchunkTimer;
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CFMTimer m_ackMinTimer;
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CFMTimer m_ackDelayTimer;
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CFMTimer m_hangTimer;
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void stateMachine(bool validSignal, uint8_t length);
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void listeningState(bool validSignal);
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void kerchunkState(bool validSignal);
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void relayingState(bool validSignal);
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void relayingWaitState(bool validSignal);
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void timeoutState(bool validSignal);
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void timeoutWaitState(bool validSignal);
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void hangState(bool validSignal);
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void sendCallsign();
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void beginRelaying();
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};
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#endif
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