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Fix RSSI for apps using proc_capture (#1420)

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* Fix RSSI for apps using proc_capture
* Update comment
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Kyle Reed 2023-08-30 08:13:14 -07:00 • committed by GitHub
parent 4774b3097f
commit bd4948602a
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3 changed files with 33 additions and 26 deletions
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4
firmware/application/ui/ui_spectrum.cpp
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@ -380,10 +380,10 @@ void WaterfallView::on_audio_spectrum() {
} /* namespace spectrum */
// TODO: Comments below refer to a fixed oversample rate (8x), cleanup.
uint32_t filter_bandwidth_for_sampling_rate(int32_t sampling_rate) {
switch (sampling_rate) { // Use the var fs (sampling_rate) to set up BPF aprox < fs_max / 2 by Nyquist theorem.
case 0 ... 3'500'000: // BW Captured range (0 <= 250kHz max) fs = 8x250k = 2000, 16x150k = 2400, 32x100k = 3200, 32x75k = 2400, (future 64x40 khz = 2400)
case 0 ... 3'500'000: // BW Captured range BW (<=250K) : fs = 8x250k = 2000k, 16x150k = 2400k, 16x100k=1600k,
// 32x75k = 2400k, 32x50k=1600, 32x32k=1024, 64x25k = 1600k, 64x16k = 1024k, 64x12k5 = 800k.
return 1'750'000; // Minimum BPF MAX2837 for all those lower BW options.
case 4'000'000 ... 7'000'000: // OVS x8, BW capture range (500k...750kHz max) fs_max = 8 x 750k = 6Mhz