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LoRa modulator: implement basic messaging

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This commit is contained in:
f4exb
2020-02-14 18:04:20 +01:00
parent cb5463ce7f
commit d4ede8457b
13 changed files with 1028 additions and 39 deletions
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plugins/channeltx/modlora/loramodsource.cpp
+45 -4
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@@ -30,7 +30,9 @@ LoRaModSource::LoRaModSource() :
m_modPhasor(0.0f),
m_levelCalcCount(0),
m_peakLevel(0.0f),
m_levelSum(0.0f)
m_levelSum(0.0f),
m_repeatCount(0),
m_active(false)
{
m_magsq = 0.0;
@@ -184,11 +186,36 @@ void LoRaModSource::modulateSample()
m_modSample = Complex{0.0, 0.0};
m_sampleCounter++;
if (m_sampleCounter == m_quietSamples*LoRaModSettings::oversampling)
if (m_sampleCounter == m_quietSamples*LoRaModSettings::oversampling) // done with quiet time
{
m_chirp0 = 0;
m_chirp = m_fftLength*LoRaModSettings::oversampling - 1;
m_state = LoRaStatePreamble;
if (m_symbols.size() != 0) // some payload to transmit
{
if (m_settings.m_messageRepeat == 0) // infinite
{
m_state = LoRaStatePreamble;
m_active = true;
}
else
{
if (m_repeatCount != 0)
{
m_repeatCount--;
m_state = LoRaStatePreamble;
m_active = true;
}
else
{
m_active = false;
}
}
}
else
{
m_active = false;
}
}
}
else if (m_state == LoRaStatePreamble)
@@ -356,6 +383,10 @@ void LoRaModSource::applySettings(const LoRaModSettings& settings, bool force)
reset();
}
if ((settings.m_messageRepeat != m_settings.m_messageRepeat) || force) {
m_repeatCount = settings.m_messageRepeat;
}
m_settings = settings;
}
@@ -388,4 +419,14 @@ void LoRaModSource::applyChannelSettings(int channelSampleRate, int bandwidth, i
m_quietSamples = (bandwidth*m_settings.m_quietMillis) / 1000;
m_state = LoRaStateIdle;
reset();
}
}
void LoRaModSource::setSymbols(const std::vector<unsigned int>& symbols)
{
m_symbols = symbols;
qDebug("LoRaModSource::setSymbols: m_symbols: %lu", m_symbols.size());
m_repeatCount = m_settings.m_messageRepeat;
m_state = LoRaStateIdle; // first reset to idle
reset();
m_sampleCounter = m_quietSamples*LoRaModSettings::oversampling - 1; // start immediately
}