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Fix LF/MF RX centering with adaptive FS4 tuning (#3319)

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* Fix LF/MF RX tuning with adaptive FS4 shift

* Enable adaptive FS4 tuning in Waterfall Designer
This commit is contained in:
Brumi-2021
2026-09-15 19:11:30 +02:00
committed by GitHub
parent b8ad44c431
commit b01b23981a
14 changed files with 191 additions and 16 deletions
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firmware/baseband/proc_capture.cpp
+18 -6
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@@ -34,6 +34,12 @@ CaptureProcessor::CaptureProcessor() {
}
void CaptureProcessor::execute(const buffer_c8_t& buffer) {
const auto direction = requested_fs4_direction_.load(std::memory_order_relaxed);
if (direction != applied_fs4_direction_) {
decim_0.configure_fs4(decim_0_taps_, direction);
applied_fs4_direction_ = direction;
}
auto decim_0_out = decim_0.execute(buffer, dst_buffer);
auto out_buffer = decim_1.execute(decim_0_out, dst_buffer);
@@ -67,6 +73,12 @@ void CaptureProcessor::on_beep_message(const AudioBeepMessage& message) {
void CaptureProcessor::on_message(const Message* const message) {
switch (message->id) {
case Message::ID::RxFs4Config:
requested_fs4_direction_.store(
static_cast<const RxFs4ConfigMessage*>(message)->direction,
std::memory_order_relaxed);
break;
case Message::ID::UpdateSpectrum:
case Message::ID::SpectrumStreamingConfig:
channel_spectrum.on_message(message);
@@ -125,34 +137,34 @@ void CaptureProcessor::sample_rate_config(const SampleRateConfigMessage& message
switch (message.oversample_rate) {
case OversampleRate::x4:
// M4 can't handle 2 decimation passes for sample rates needing x4.
decim_0.set<FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
configure_fs4<FIRC8xR16x24FS4Decim4>(taps_200k_decim_0.taps);
decim_1.set<NoopDecim>();
break;
case OversampleRate::x8:
// M4 can't handle 2 decimation passes for sample rates <= 600k.
if (message.sample_rate < 600'000) {
decim_0.set<FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
configure_fs4<FIRC8xR16x24FS4Decim4>(taps_200k_decim_0.taps);
decim_1.set<FIRC16xR16x16Decim2>().configure(taps_200k_decim_1.taps);
} else {
// Using 180k taps to provide better filtering with a single pass.
decim_0.set<FIRC8xR16x24FS4Decim8>().configure(taps_180k_wfm_decim_0.taps);
configure_fs4<FIRC8xR16x24FS4Decim8>(taps_180k_wfm_decim_0.taps);
decim_1.set<NoopDecim>();
}
break;
case OversampleRate::x16:
decim_0.set<FIRC8xR16x24FS4Decim8>().configure(taps_200k_decim_0.taps);
configure_fs4<FIRC8xR16x24FS4Decim8>(taps_200k_decim_0.taps);
decim_1.set<FIRC16xR16x16Decim2>().configure(taps_200k_decim_1.taps);
break;
case OversampleRate::x32:
decim_0.set<FIRC8xR16x24FS4Decim4>().configure(taps_200k_decim_0.taps);
configure_fs4<FIRC8xR16x24FS4Decim4>(taps_200k_decim_0.taps);
decim_1.set<FIRC16xR16x32Decim8>().configure(taps_16k0_decim_1.taps);
break;
case OversampleRate::x64:
decim_0.set<FIRC8xR16x24FS4Decim8>().configure(taps_200k_decim_0.taps);
configure_fs4<FIRC8xR16x24FS4Decim8>(taps_200k_decim_0.taps);
decim_1.set<FIRC16xR16x32Decim8>().configure(taps_16k0_decim_1.taps);
break;