/* * Copyright (C) 2020 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(FM_H) #define FM_H #include "Config.h" #include "FMBlanking.h" #include "FMCTCSSRX.h" #include "FMCTCSSTX.h" #include "FMTimeout.h" #include "FMKeyer.h" #include "FMTimer.h" #include "FMRB.h" #include "FMDirectForm1.h" #include "FMDownsampler.h" enum FM_STATE { FS_LISTENING, FS_KERCHUNK, FS_RELAYING, FS_RELAYING_WAIT, FS_TIMEOUT, FS_TIMEOUT_WAIT, FS_HANG }; class CFM { public: CFM(); void samples(bool cos, const q15_t* samples, uint8_t length); void process(); void reset(); uint8_t setCallsign(const char* callsign, uint8_t speed, uint16_t frequency, uint8_t time, uint8_t holdoff, uint8_t highLevel, uint8_t lowLevel, bool callsignAtStart, bool callsignAtEnd, bool callsignAtLatch); uint8_t setAck(const char* rfAck, uint8_t speed, uint16_t frequency, uint8_t minTime, uint16_t delay, uint8_t level); uint8_t setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssHighThreshold, uint8_t ctcssLowThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime, uint8_t accessMode, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel); private: CFMKeyer m_callsign; CFMKeyer m_rfAck; CFMCTCSSRX m_ctcssRX; CFMCTCSSTX m_ctcssTX; CFMTimeout m_timeoutTone; FM_STATE m_state; bool m_callsignAtStart; bool m_callsignAtEnd; bool m_callsignAtLatch; CFMTimer m_callsignTimer; CFMTimer m_timeoutTimer; CFMTimer m_holdoffTimer; CFMTimer m_kerchunkTimer; CFMTimer m_ackMinTimer; CFMTimer m_ackDelayTimer; CFMTimer m_hangTimer; CFMTimer m_reverseTimer; CFMDirectFormI m_filterStage1; CFMDirectFormI m_filterStage2; CFMDirectFormI m_filterStage3; CFMBlanking m_blanking; uint8_t m_accessMode; bool m_cosInvert; q15_t m_rfAudioBoost; CFMDownsampler m_downsampler; q15_t m_rxLevel; CFMRB m_inputRB; CFMRB m_outputRB; void stateMachine(bool validSignal); void listeningState(bool validSignal); void kerchunkState(bool validSignal); void relayingState(bool validSignal); void relayingWaitState(bool validSignal); void timeoutState(bool validSignal); void timeoutWaitState(bool validSignal); void hangState(bool validSignal); void clock(uint8_t length); void sendCallsign(); void beginRelaying(); void insertDelay(uint16_t ms); void insertSilence(uint16_t ms); }; #endif