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Increase REC BW Option till 1Mhz Capture App (#1352)

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* Increase REC BW Option till 1Mhz Capture App

* Format issues

* miss type correction

* format issues
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Brumi-2021 2023-08-06 21:54:24 +02:00 • committed by GitHub
parent 1188157a3e
commit cb0a4854f5
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5 changed files with 36 additions and 20 deletions
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14
firmware/application/ui/ui_spectrum.cpp
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@ -390,19 +390,23 @@ uint32_t filter_bandwidth_for_sampling_rate(int32_t sampling_rate) {
// BW 500k...750kHz, ex. 500kHz (fs = 8 x BW = 4Mhz), BW 600kHz (fs = 4,8Mhz), BW 750 kHz (fs = 6Mhz).
return 2'500'000; // In some IC, MAX2837 appears as 2250000, but both work similarly.
case 8'800'000: // BW capture 1,1Mhz fs = 8 x 1,1Mhz = 8,8Mhz. (1Mhz showed slightly higher noise background).
return 3'500'000;
case 8'000'000: // BW capture 1Mhz fs = 8 x 1Mhz = 8Mhz. (1Mhz showed slightly higher noise background).
return 3'500'000; // some low SD cards, if not showing avg. writting speed >4MB/sec, they will produce sammples drop at REC with 1MB and C16 format.
case 12'000'000: // BW capture 1,5Mhz, fs = 8 x 1,5Mhz = 12Mhz
// Good BPF, good matching, we have some periodical M4 % samples drop.
return 5'000'000;
case 14'000'000: // BW capture 1,75Mhz, fs = 8 x 1,75Mhz = 14Mhz
// Good BPF, good matching, but LCD flickers, refresh rate should be < 20 Hz, reasonable picture.
// Good BPF, good matching, we have some periodical M4 % samples drop.
return 5'000'000;
case 16'000'000: // BW capture 2Mhz, fs = 8 x 2Mhz = 16Mhz
// Good BPF, good matching, but LCD flickers, refresh rate should be < 20 Hz, reasonable picture.
// Good BPF, good matching, we have some periodical M4 % samples drop.
return 6'000'000;
case 20'000'000: // BW capture 2,5Mhz, fs = 8 x 2,5 Mhz = 20Mhz
// Good BPF, good matching, but LCD flickers, refresh rate should be < 20 Hz, reasonable picture.
// Good BPF, good matching, we have some periodical M4 % samples drop.
return 7'000'000;
default: // BW capture 2,75Mhz, fs = 8 x 2,75Mhz = 22Mhz max ADC sampling and others.