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Make whole FM chain RX level independant

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This commit is contained in:
Geoffrey Merck
2020-05-08 09:01:00 +02:00
parent eb9c0dfd93
commit 77e0deee76
4 changed files with 14 additions and 26 deletions
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FM.cpp
+8 -3
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@@ -46,7 +46,8 @@ m_blanking(),
m_useCOS(true),
m_cosInvert(false),
m_rfAudioBoost(1U),
m_downsampler(128)//Size might need adjustement
m_downsampler(128),//Size might need adjustement
m_rxLevel(1)
{
}
@@ -63,7 +64,8 @@ void CFM::samples(bool cos, q15_t* samples, uint8_t length)
uint8_t i = 0U;
for (; i < length; i++) {
q15_t currentSample = samples[i];//save to a local variable to avoid indirection on every access
// ARMv7-M has hardware integer division
q15_t currentSample = q15_t((q31_t(samples[i]) << 8) / m_rxLevel);
uint8_t ctcssState = m_ctcssRX.process(currentSample);
@@ -188,7 +190,9 @@ uint8_t CFM::setMisc(uint16_t timeout, uint8_t timeoutLevel, uint8_t ctcssFreque
m_timeoutTone.setParams(timeoutLevel);
m_blanking.setParams(maxDev, timeoutLevel);
uint8_t ret = m_ctcssRX.setParams(ctcssFrequency, ctcssThreshold, rxLevel);
m_rxLevel = rxLevel; //q15_t(255)/q15_t(rxLevel >> 1);
uint8_t ret = m_ctcssRX.setParams(ctcssFrequency, ctcssThreshold);
if (ret != 0U)
return ret;
@@ -438,3 +442,4 @@ void CFM::beginRelaying()
m_timeoutTimer.start();
m_ackMinTimer.start();
}