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RTLSDR: implemented Fc position adjustment

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This commit is contained in:
f4exb 2015-10-01 06:30:50 +02:00
parent 2ceacfa107
commit dc81e2dd9c
8 changed files with 203 additions and 21 deletions
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15
plugins/samplesource/rtlsdr/rtlsdrgui.cpp
View File

@ -136,6 +136,7 @@ void RTLSDRGui::displaySettings()
ui->ppmText->setText(tr("%1").arg(m_settings.m_loPpmCorrection));
ui->decimText->setText(tr("%1").arg(1<<m_settings.m_log2Decim));
ui->decim->setValue(m_settings.m_log2Decim);
ui->fcPos->setCurrentIndex((int) m_settings.m_fcPos);
if (m_gains.size() > 0)
{
@ -191,6 +192,20 @@ void RTLSDRGui::on_decim_valueChanged(int value)
sendSettings();
}
void RTLSDRGui::on_fcPos_currentIndexChanged(int index)
{
if (index == 0) {
m_settings.m_fcPos = RTLSDRSettings::FC_POS_INFRA;
sendSettings();
} else if (index == 1) {
m_settings.m_fcPos = RTLSDRSettings::FC_POS_SUPRA;
sendSettings();
} else if (index == 2) {
m_settings.m_fcPos = RTLSDRSettings::FC_POS_CENTER;
sendSettings();
}
}
void RTLSDRGui::on_ppm_valueChanged(int value)
{
if ((value > 99) || (value < -99))

1
plugins/samplesource/rtlsdr/rtlsdrgui.h
View File

@ -47,6 +47,7 @@ private slots:
void on_dcOffset_toggled(bool checked);
void on_iqImbalance_toggled(bool checked);
void on_decim_valueChanged(int value);
void on_fcPos_currentIndexChanged(int index);
void on_ppm_valueChanged(int value);
void on_gain_valueChanged(int value);
void on_samplerate_valueChanged(int value);

45
plugins/samplesource/rtlsdr/rtlsdrgui.ui
View File

@ -7,7 +7,7 @@
<x>0</x>
<y>0</y>
<width>247</width>
<height>189</height>
<height>219</height>
</rect>
</property>
<property name="sizePolicy">
@ -275,6 +275,49 @@
</item>
</layout>
</item>
<item>
<layout class="QGridLayout" name="gridLayout_fcPos">
<item row="0" column="1">
<widget class="QComboBox" name="fcPos">
<item>
<property name="text">
<string>Inf</string>
</property>
</item>
<item>
<property name="text">
<string>Sup</string>
</property>
</item>
<item>
<property name="text">
<string>Cent</string>
</property>
</item>
</widget>
</item>
<item row="0" column="0">
<widget class="QLabel" name="fcPosLabel">
<property name="text">
<string>Fc pos</string>
</property>
</widget>
</item>
<item row="0" column="2">
<spacer name="horizontalSpacer_fcPos">
<property name="orientation">
<enum>Qt::Horizontal</enum>
</property>
<property name="sizeHint" stdset="0">
<size>
<width>40</width>
<height>20</height>
</size>
</property>
</spacer>
</item>
</layout>
</item>
<item>
<widget class="Line" name="line_3">
<property name="orientation">

62
plugins/samplesource/rtlsdr/rtlsdrinput.cpp
View File

@ -235,12 +235,13 @@ bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, bool force)
{
if( rtlsdr_set_sample_rate(m_dev, settings.m_devSampleRate) < 0)
{
qCritical("could not set sample rate: %d", settings.m_devSampleRate);
qCritical("RTLSDRInput::applySettings: could not set sample rate: %d", settings.m_devSampleRate);
}
else
{
m_settings.m_devSampleRate = settings.m_devSampleRate;
m_rtlSDRThread->setSamplerate(settings.m_devSampleRate);
qDebug("RTLSDRInput::applySettings: sample rate set to %d", m_settings.m_devSampleRate);
}
}
}
@ -276,8 +277,63 @@ bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, bool force)
forwardChange = true;
}
m_settings.m_centerFrequency = settings.m_centerFrequency;
qint64 deviceCenterFrequency = m_settings.m_centerFrequency;
qint64 f_img = deviceCenterFrequency;
quint32 devSampleRate = m_settings.m_devSampleRate;
if (force || (m_settings.m_centerFrequency != settings.m_centerFrequency)
|| (m_settings.m_fcPos != settings.m_fcPos))
{
m_settings.m_centerFrequency = settings.m_centerFrequency;
if ((m_settings.m_log2Decim == 0) || (settings.m_fcPos == RTLSDRSettings::FC_POS_CENTER))
{
deviceCenterFrequency = m_settings.m_centerFrequency;
f_img = deviceCenterFrequency;
}
else
{
if (settings.m_fcPos == RTLSDRSettings::FC_POS_INFRA)
{
deviceCenterFrequency = m_settings.m_centerFrequency + (devSampleRate / 4);
f_img = deviceCenterFrequency + devSampleRate/2;
}
else if (settings.m_fcPos == RTLSDRSettings::FC_POS_SUPRA)
{
deviceCenterFrequency = m_settings.m_centerFrequency - (devSampleRate / 4);
f_img = deviceCenterFrequency - devSampleRate/2;
}
}
if(m_dev != 0)
{
if (rtlsdr_set_center_freq( m_dev, deviceCenterFrequency ) != 0)
{
qDebug("rtlsdr_set_center_freq(%lld) failed", deviceCenterFrequency);
}
else
{
qDebug() << "RTLSDRInput::applySettings: center freq: " << m_settings.m_centerFrequency << " Hz"
<< " device center freq: " << deviceCenterFrequency << " Hz"
<< " device sample rate: " << devSampleRate << "Hz"
<< " Actual sample rate: " << devSampleRate/(1<<m_settings.m_log2Decim) << "Hz"
<< " img: " << f_img << "Hz";
}
}
}
if ((m_settings.m_fcPos != settings.m_fcPos) || force)
{
m_settings.m_fcPos = settings.m_fcPos;
if(m_dev != 0)
{
m_rtlSDRThread->setFcPos((int) m_settings.m_fcPos);
qDebug() << "RTLSDRInput: set fc pos (enum) to " << (int) m_settings.m_fcPos;
}
}
/*
if(m_dev != 0)
{
qint64 centerFrequency = m_settings.m_centerFrequency + (m_settings.m_devSampleRate / 4);
@ -295,7 +351,7 @@ bool RTLSDRInput::applySettings(const RTLSDRSettings& settings, bool force)
{
qDebug("rtlsdr_set_center_freq(%lld) failed", m_settings.m_centerFrequency);
}
}
}*/
if ((m_settings.m_dcBlock != settings.m_dcBlock) || force)
{

6
plugins/samplesource/rtlsdr/rtlsdrsettings.cpp
View File

@ -30,6 +30,7 @@ void RTLSDRSettings::resetToDefaults()
m_gain = 0;
m_loPpmCorrection = 0;
m_log2Decim = 4;
m_fcPos = FC_POS_CENTER;
m_dcBlock = false;
m_iqImbalance = false;
}
@ -44,6 +45,7 @@ QByteArray RTLSDRSettings::serialize() const
s.writeU32(4, m_log2Decim);
s.writeBool(5, m_dcBlock);
s.writeBool(6, m_iqImbalance);
s.writeS32(7, (int) m_fcPos);
return s.final();
}
@ -60,12 +62,16 @@ bool RTLSDRSettings::deserialize(const QByteArray& data)
if (d.getVersion() == 1)
{
int intval;
d.readS32(1, &m_devSampleRate, 0);
d.readS32(2, &m_gain, 0);
d.readS32(3, &m_loPpmCorrection, 0);
d.readU32(4, &m_log2Decim, 4);
d.readBool(5, &m_dcBlock, false);
d.readBool(6, &m_iqImbalance, false);
d.readS32(7, &intval, 0);
m_fcPos = (fcPos_t) intval;
return true;
}

7
plugins/samplesource/rtlsdr/rtlsdrsettings.h
View File

@ -18,11 +18,18 @@
#define _RTLSDR_RTLSDRSETTINGS_H_
struct RTLSDRSettings {
typedef enum {
FC_POS_INFRA = 0,
FC_POS_SUPRA,
FC_POS_CENTER
} fcPos_t;
int m_devSampleRate;
quint64 m_centerFrequency;
qint32 m_gain;
qint32 m_loPpmCorrection;
quint32 m_log2Decim;
fcPos_t m_fcPos;
bool m_dcBlock;
bool m_iqImbalance;

86
plugins/samplesource/rtlsdr/rtlsdrthread.cpp
View File

@ -63,6 +63,11 @@ void RTLSDRThread::setLog2Decimation(unsigned int log2_decim)
m_log2Decim = log2_decim;
}
void RTLSDRThread::setFcPos(int fcPos)
{
m_fcPos = fcPos;
}
void RTLSDRThread::run()
{
int res;
@ -85,25 +90,72 @@ void RTLSDRThread::callback(const quint8* buf, qint32 len)
{
SampleVector::iterator it = m_convertBuffer.begin();
switch (m_log2Decim)
if (m_log2Decim == 0)
{
case 0:
m_decimators.decimate1(&it, buf, len);
break;
case 1:
m_decimators.decimate2_inf(&it, buf, len);
break;
case 2:
m_decimators.decimate4_inf(&it, buf, len);
break;
case 3:
m_decimators.decimate8_inf(&it, buf, len);
break;
case 4:
m_decimators.decimate16_inf(&it, buf, len);
break;
default:
break;
}
else
{
if (m_fcPos == 0) // Infradyne
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_inf(&it, buf, len);
break;
case 2:
m_decimators.decimate4_inf(&it, buf, len);
break;
case 3:
m_decimators.decimate8_inf(&it, buf, len);
break;
case 4:
m_decimators.decimate16_inf(&it, buf, len);
break;
default:
break;
}
}
else if (m_fcPos == 1) // Supradyne
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_sup(&it, buf, len);
break;
case 2:
m_decimators.decimate4_sup(&it, buf, len);
break;
case 3:
m_decimators.decimate8_sup(&it, buf, len);
break;
case 4:
m_decimators.decimate16_sup(&it, buf, len);
break;
default:
break;
}
}
else // Centered
{
switch (m_log2Decim)
{
case 1:
m_decimators.decimate2_cen(&it, buf, len);
break;
case 2:
m_decimators.decimate4_cen(&it, buf, len);
break;
case 3:
m_decimators.decimate8_cen(&it, buf, len);
break;
case 4:
m_decimators.decimate16_cen(&it, buf, len);
break;
default:
break;
}
}
}
m_sampleFifo->write(m_convertBuffer.begin(), it);

2
plugins/samplesource/rtlsdr/rtlsdrthread.h
View File

@ -37,6 +37,7 @@ public:
void stopWork();
void setSamplerate(int samplerate);
void setLog2Decimation(unsigned int log2_decim);
void setFcPos(int fcPos);
private:
QMutex m_startWaitMutex;
@ -49,6 +50,7 @@ private:
int m_samplerate;
unsigned int m_log2Decim;
int m_fcPos;
Decimators<quint8, SDR_SAMP_SZ, 8> m_decimators;