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MMDVM
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Add CTCSS hysteresis.

This commit is contained in:
Jonathan Naylor 2020-05-12 13:55:30 +01:00
parent 75e32e1b71
commit 435544f7a1
5 changed files with 32 additions and 23 deletions
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4
FM.cpp
View File

@ -183,7 +183,7 @@ uint8_t CFM::setAck(const char* rfAck, uint8_t speed, uint16_t frequency, uint8_
return m_rfAck.setParams(rfAck, speed, frequency, level, level);
}
uint8_t CFM::setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFrequency, uint8_t ctcssThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel)
uint8_t CFM::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, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel)
{
m_useCOS = useCOS;
m_cosInvert = cosInvert;
@ -199,7 +199,7 @@ uint8_t CFM::setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFreque
m_rxLevel = rxLevel; //q15_t(255)/q15_t(rxLevel >> 1);
uint8_t ret = m_ctcssRX.setParams(ctcssFrequency, ctcssThreshold);
uint8_t ret = m_ctcssRX.setParams(ctcssFrequency, ctcssHighThreshold, ctcssLowThreshold);
if (ret != 0U)
return ret;

2
FM.h
View File

@ -56,7 +56,7 @@ public:
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 ctcssThreshold, uint8_t ctcssLevel, uint8_t kerchunkTime, uint8_t hangTime, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel);
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, bool useCOS, bool cosInvert, uint8_t rfAudioBoost, uint8_t maxDev, uint8_t rxLevel);
private:
CFMKeyer m_callsign;

17
FMCTCSSRX.cpp
View File

@ -82,7 +82,8 @@ const uint16_t N = 24000U / 4U;
CFMCTCSSRX::CFMCTCSSRX() :
m_coeffDivTwo(0),
m_threshold(0),
m_highThreshold(0),
m_lowThreshold(0),
m_count(0U),
m_q0(0),
m_q1(0),
@ -90,7 +91,7 @@ m_result(CTS_NONE)
{
}
uint8_t CFMCTCSSRX::setParams(uint8_t frequency, uint8_t threshold)
uint8_t CFMCTCSSRX::setParams(uint8_t frequency, uint8_t highThreshold, uint8_t lowThreshold)
{
m_coeffDivTwo = 0;
@ -104,7 +105,8 @@ uint8_t CFMCTCSSRX::setParams(uint8_t frequency, uint8_t threshold)
if (m_coeffDivTwo == 0)
return 4U;
m_threshold = q31_t(threshold);
m_highThreshold = q31_t(highThreshold);
m_lowThreshold = q31_t(lowThreshold);
return 0U;
}
@ -148,14 +150,19 @@ uint8_t CFMCTCSSRX::process(q15_t sample)
q31_t value = t2 + t4 - t9;
bool previousCTCSSValid = CTCSS_VALID(m_result);
q31_t threshold = m_highThreshold;
if (previousCTCSSValid)
threshold = m_lowThreshold;
m_result |= CTS_READY;
if (value >= m_threshold)
if (value >= threshold)
m_result |= CTS_VALID;
else
m_result &= ~CTS_VALID;
if (previousCTCSSValid != CTCSS_VALID(m_result))
DEBUG4("CTCSS Value / Threshold / Valid", value, m_threshold, CTCSS_VALID(m_result));
DEBUG4("CTCSS Value / Threshold / Valid", value, threshold, CTCSS_VALID(m_result));
m_count = 0U;
m_q0 = 0;

5
FMCTCSSRX.h
View File

@ -34,7 +34,7 @@ class CFMCTCSSRX {
public:
CFMCTCSSRX();
uint8_t setParams(uint8_t frequency, uint8_t threshold);
uint8_t setParams(uint8_t frequency, uint8_t highThreshold, uint8_t lowThreshold);
uint8_t process(q15_t sample);
@ -42,7 +42,8 @@ public:
private:
q63_t m_coeffDivTwo;
q31_t m_threshold;
q31_t m_highThreshold;
q31_t m_lowThreshold;
uint16_t m_count;
q31_t m_q0;
q31_t m_q1;

27
SerialPort.cpp
View File

@ -101,7 +101,7 @@ const uint8_t MMDVM_DEBUG5 = 0xF5U;
#define HW_TYPE "MMDVM"
#endif
#define DESCRIPTION "20200510 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG/FM)"
#define DESCRIPTION "20200512 (D-Star/DMR/System Fusion/P25/NXDN/POCSAG/FM)"
#if defined(GITVERSION)
#define concat(h, a, b, c) h " " a " " b " GitID #" c ""
@ -409,27 +409,28 @@ uint8_t CSerialPort::setFMParams2(const uint8_t* data, uint8_t length)
uint8_t CSerialPort::setFMParams3(const uint8_t* data, uint8_t length)
{
if (length < 11U)
if (length < 12U)
return 4U;
uint16_t timeout = data[0U] * 5U;
uint8_t timeoutLevel = data[1U];
uint8_t ctcssFrequency = data[2U];
uint8_t ctcssThreshold = data[3U];
uint8_t ctcssLevel = data[4U];
uint8_t ctcssFrequency = data[2U];
uint8_t ctcssHighThreshold = data[3U];
uint8_t ctcssLowThreshold = data[4U];
uint8_t ctcssLevel = data[5U];
uint8_t kerchunkTime = data[5U];
uint8_t hangTime = data[6U];
uint8_t kerchunkTime = data[6U];
uint8_t hangTime = data[7U];
bool useCOS = (data[7U] & 0x01U) == 0x01U;
bool cosInvert = (data[7U] & 0x02U) == 0x02U;
bool useCOS = (data[8U] & 0x01U) == 0x01U;
bool cosInvert = (data[8U] & 0x02U) == 0x02U;
uint8_t rfAudioBoost = data[8U];
uint8_t maxDev = data[9U];
uint8_t rxLevel = data[10U];
uint8_t rfAudioBoost = data[9U];
uint8_t maxDev = data[10U];
uint8_t rxLevel = data[11U];
return fm.setMisc(timeout, timeoutLevel, ctcssFrequency, ctcssThreshold, ctcssLevel, kerchunkTime, hangTime, useCOS, cosInvert, rfAudioBoost, maxDev, rxLevel);
return fm.setMisc(timeout, timeoutLevel, ctcssFrequency, ctcssHighThreshold, ctcssLowThreshold, ctcssLevel, kerchunkTime, hangTime, useCOS, cosInvert, rfAudioBoost, maxDev, rxLevel);
}
uint8_t CSerialPort::setMode(const uint8_t* data, uint8_t length)