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Use a common function for finding Tone Key index from received Tone Frequency (#1218)

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* Common function for finding CTCSS tone index from freq
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Mark Thompson 2023-06-30 00:37:43 -05:00 • committed by GitHub
parent 99809c7919
commit cdd524b9f3
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GPG key ID: 4AEE18F83AFDEB23
6 changed files with 64 additions and 75 deletions
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19
firmware/application/apps/analog_audio_app.cpp
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@ -404,22 +404,9 @@ void AnalogAudioView::update_modulation(ReceiverModel::Mode modulation) {
}
void AnalogAudioView::handle_coded_squelch(uint32_t value) {
float diff, min_diff = value;
size_t min_idx{0};
size_t c;
// Find nearest match
for (c = 0; c < tone_keys.size(); c++) {
diff = abs(((float)value / 100.0) - tone_keys[c].second);
if (diff < min_diff) {
min_idx = c;
min_diff = diff;
}
}
// Arbitrary confidence threshold
if (min_diff < 40)
text_ctcss.set("CTCSS " + tone_keys[min_idx].first);
tone_index idx = tone_key_index_by_value(value);
if (idx >= 0)
text_ctcss.set("CTCSS " + tone_key_string(idx));
else
text_ctcss.set("???");
}