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Add the main audio filter.

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This commit is contained in:
Jonathan Naylor
2020-04-17 18:45:42 +01:00
parent 4a85122483
commit 564260b2f1
2 changed files with 47 additions and 22 deletions
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FM.h
+17 -15
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@@ -52,21 +52,23 @@ public:
uint8_t setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime);
private:
CFMKeyer m_callsign;
CFMKeyer m_rfAck;
CFMGoertzel m_goertzel;
CFMCTCSSTX m_ctcss;
CFMTimeout m_timeoutTone;
FM_STATE m_state;
bool m_callsignAtStart;
bool m_callsignAtEnd;
CFMTimer m_callsignTimer;
CFMTimer m_timeoutTimer;
CFMTimer m_holdoffTimer;
CFMTimer m_kerchunkTimer;
CFMTimer m_ackMinTimer;
CFMTimer m_ackDelayTimer;
CFMTimer m_hangTimer;
arm_fir_instance_q15 m_filter;
q15_t m_filterState[230U]; // NoTaps + BlockSize - 1, 201 + 20 - 1 plus some spare
CFMKeyer m_callsign;
CFMKeyer m_rfAck;
CFMGoertzel m_goertzel;
CFMCTCSSTX m_ctcss;
CFMTimeout m_timeoutTone;
FM_STATE m_state;
bool m_callsignAtStart;
bool m_callsignAtEnd;
CFMTimer m_callsignTimer;
CFMTimer m_timeoutTimer;
CFMTimer m_holdoffTimer;
CFMTimer m_kerchunkTimer;
CFMTimer m_ackMinTimer;
CFMTimer m_ackDelayTimer;
CFMTimer m_hangTimer;
void stateMachine(bool validSignal, uint8_t length);
void listeningState(bool validSignal);