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Clearer setting of IF bandwidth and type

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30hours 2024-09-16 10:22:32 +00:00
parent f9dba5813f
commit f7e3591606
2 changed files with 24 additions and 19 deletions
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39
src/capture/rspduo/RspDuo.cpp
View file

@ -57,7 +57,25 @@ RspDuo::RspDuo(std::string _type, uint32_t _fc,
{125000, 16},
{62500, 32}
};
std::unordered_map<int, sdrplay_api_Bw_MHzT> ifBandwidthMap = {
{2000000, sdrplay_api_BW_1_536},
{1000000, sdrplay_api_BW_0_600},
{500000, sdrplay_api_BW_0_600},
{250000, sdrplay_api_BW_0_300},
{125000, sdrplay_api_BW_0_200},
{62500, sdrplay_api_BW_0_200}
};
std::unordered_map<int, sdrplay_api_If_kHzT> ifModeMap = {
{2000000, sdrplay_api_IF_1_620},
{1000000, sdrplay_api_IF_1_620},
{500000, sdrplay_api_IF_1_620},
{250000, sdrplay_api_IF_1_620},
{125000, sdrplay_api_IF_1_620},
{62500, sdrplay_api_IF_1_620}
};
nDecimation = decimationMap[fs];
bwType = ifBandwidthMap[fs];
ifType = ifModeMap[fs];
usb_bulk_fg = false;
capture_fg = saveIq;
saveIqFileLocal = &saveIqFile;
@ -381,25 +399,8 @@ void RspDuo::set_device_parameters()
// set decimation and IF frequency and analog bandwidth
chParams->ctrlParams.decimation.enable = 1;
chParams->ctrlParams.decimation.decimationFactor = nDecimation;
chParams->tunerParams.ifType = sdrplay_api_IF_1_620;
chParams->tunerParams.bwType = sdrplay_api_BW_1_536;
if (nDecimation == 4)
{
// 2 MSa/s / 4 = 500 kHz
chParams->tunerParams.bwType = sdrplay_api_BW_0_600;
}
else if (nDecimation == 8)
{
// 2 MSa/s / 8 = 250 kHz
chParams->tunerParams.bwType = sdrplay_api_BW_0_300;
}
else if (nDecimation == 16 || nDecimation == 32)
{
// 2 MSa/s / 16 = 125 kHz
// 2 MSa/s / 32 = 62.5 kHz
chParams->tunerParams.bwType = sdrplay_api_BW_0_200;
}
chParams->tunerParams.ifType = ifType;
chParams->tunerParams.bwType = bwType;
// configure notch filters
chParams->rspDuoTunerParams.rfNotchEnable = rf_notch_fg;

4
src/capture/rspduo/RspDuo.h
View file

@ -47,6 +47,10 @@ private:
bool dab_notch_fg;
/// @brief USB bulk transfer mode.
bool usb_bulk_fg;
/// @brief SDRplay IF bandwidth enum.
sdrplay_api_Bw_MHzT bwType;
/// @brief SDRplay IF mode enum.
sdrplay_api_If_kHzT ifType;
/// @brief Maximum frequency (Hz).
static const double MAX_FREQUENCY_NR;