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Fix RTLSDR E4000 gain and bandwidth settings. Add tuner type to GUI.

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This commit is contained in:
Jon Beniston
2023-08-25 15:04:57 +01:00
parent 6105212bd4
commit 05914cc0ba
5 changed files with 53 additions and 6 deletions
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plugins/samplesource/rtlsdr/rtlsdrinput.cpp
+22 -2
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@@ -57,6 +57,7 @@ RTLSDRInput::RTLSDRInput(DeviceAPI *deviceAPI) :
m_dev(0),
m_rtlSDRThread(nullptr),
m_deviceDescription("RTLSDR"),
m_tunerType(RTLSDR_TUNER_UNKNOWN),
m_running(false)
{
m_sampleFifo.setLabel(m_deviceDescription);
@@ -155,7 +156,9 @@ bool RTLSDRInput::openDevice()
return false;
}
qInfo("RTLSDRInput::openDevice: open: %s %s, SN: %s", vendor, product, serial);
m_tunerType = rtlsdr_get_tuner_type(m_dev);
qInfo("RTLSDRInput::openDevice: open: %s %s, SN: %s Tuner: %s", vendor, product, serial, getTunerName());
m_deviceDescription = QString("%1 (SN %2)").arg(product).arg(serial);
if ((res = rtlsdr_set_sample_rate(m_dev, 1152000)) < 0)
@@ -504,7 +507,8 @@ bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, const QList<QStr
}
}
if (settingsKeys.contains("offsetTuning") || force)
// Reapply offset_tuning setting if bandwidth is changed, otherwise frequency response of filter looks wrong on E4000
if (settingsKeys.contains("offsetTuning") || settingsKeys.contains("rfBandwidth") || force)
{
if (m_dev != 0)
{
@@ -520,6 +524,11 @@ bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, const QList<QStr
{
if(m_dev != 0)
{
// Nooelec E4000 SDRs appear to require tuner_gain_mode to be reset to manual before
// each call to set_tuner_gain, otherwise tuner AGC seems to be reenabled
if (rtlsdr_set_tuner_gain_mode(m_dev, 1) < 0) {
qCritical("RTLSDRInput::applySettings: error setting tuner gain mode to manual");
}
qDebug() << "Set tuner gain " << settings.m_gain;
if (rtlsdr_set_tuner_gain(m_dev, settings.m_gain) != 0) {
qCritical("RTLSDRInput::applySettings: rtlsdr_set_tuner_gain() failed");
@@ -566,6 +575,17 @@ bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, const QList<QStr
return true;
}
QString RTLSDRInput::getTunerName() const
{
const static QStringList names = {"Unknown", "E4000", "FC0012", "FC0013", "FC2580", "R820T", "R828D"};
if ((int) m_tunerType <= names.size()) {
return names[(int) m_tunerType];
} else {
return names[0];
}
}
void RTLSDRInput::set_ds_mode(int on)
{
rtlsdr_set_direct_sampling(m_dev, on);