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ChannelSpectrumConfig message subsumes FIFONotify.

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Separate channel spectrum config from spectrum data. This will permit sending config info only when necessary.
Use type information of ChannelSpectrum to statically define number of FFT bins elsewhere.
TODO: Posting configuration message way too often. Fixing that is the next step.
This commit is contained in:
Jared Boone
2016-01-06 12:10:30 -08:00
parent ba33cc737d
commit 7710b2d1fa
5 changed files with 49 additions and 42 deletions
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18
firmware/baseband/spectrum_collector.cpp
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@@ -48,6 +48,7 @@ void SpectrumCollector::feed(
// Called from baseband processing thread.
channel_filter_pass_frequency = filter_pass_frequency;
channel_filter_stop_frequency = filter_stop_frequency;
post_configuration_message();
channel_spectrum_decimator.feed(
channel,
[this](const buffer_c16_t& data) {
@@ -66,6 +67,16 @@ void SpectrumCollector::post_message(const buffer_c16_t& data) {
}
}
void SpectrumCollector::post_configuration_message() {
ChannelSpectrumConfigMessage message {
channel_spectrum_sampling_rate,
channel_filter_pass_frequency,
channel_filter_stop_frequency,
&fifo
};
shared_memory.application_queue.push(message);
}
void SpectrumCollector::update() {
// Called from idle thread (after EVT_MASK_SPECTRUM is flagged)
if( channel_spectrum_request_update ) {
@@ -85,13 +96,6 @@ void SpectrumCollector::update() {
spectrum.db[i] = std::max(0U, std::min(255U, v));
}
/* TODO: Rename .db -> .magnitude, or something more (less!) accurate. */
spectrum.db_count = spectrum.db.size();
spectrum.sampling_rate = channel_spectrum_sampling_rate;
spectrum.channel_filter_pass_frequency = channel_filter_pass_frequency;
spectrum.channel_filter_stop_frequency = channel_filter_stop_frequency;
fifo.in(spectrum);
FIFONotifyMessage message { &fifo };
shared_memory.application_queue.push(message);
}
}