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hackrfinput - Change LO ppm to adjust the hardware clocks.

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LO ppm now adjusts the primary clock in the hackrf one instead of offsetting the freq in software. The offset adjusts all clocks except the CPU which currently uses it's own crystal.
There is room for improvement but I tried to keep it simple and keep the user interface the same for now.
This commit is contained in:
FuzzyCheese 2021-03-28 21:35:57 -05:00
parent be85e680e0
commit 295e1f52bf
2 changed files with 81 additions and 20 deletions
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99
plugins/samplesource/hackrfinput/hackrfinput.cpp
View File

@ -316,19 +316,18 @@ bool HackRFInput::handleMessage(const Message& message)
}
}
void HackRFInput::setDeviceCenterFrequency(quint64 freq_hz, qint32 LOppmTenths)
void HackRFInput::setDeviceCenterFrequency(quint64 freq_hz)
{
if (!m_dev) {
return;
}
qint64 df = ((qint64)freq_hz * LOppmTenths) / 10000000LL;
hackrf_error rc = (hackrf_error) hackrf_set_freq(m_dev, static_cast<uint64_t>(freq_hz + df));
hackrf_error rc = (hackrf_error) hackrf_set_freq(m_dev, static_cast<uint64_t>(freq_hz));
if (rc != HACKRF_SUCCESS) {
qWarning("HackRFInput::setDeviceCenterFrequency: could not frequency to %llu Hz", freq_hz + df);
qWarning("HackRFInput::setDeviceCenterFrequency: could not frequency to %llu Hz", freq_hz);
} else {
qDebug("HackRFInput::setDeviceCenterFrequency: frequency set to %llu Hz", freq_hz + df);
qDebug("HackRFInput::setDeviceCenterFrequency: frequency set to %llu Hz", freq_hz);
}
}
@ -410,22 +409,84 @@ bool HackRFInput::applySettings(const HackRFInputSettings& settings, bool force)
reverseAPIKeys.append("centerFrequency");
}
if ((m_settings.m_LOppmTenths != settings.m_LOppmTenths) || force) {
reverseAPIKeys.append("LOppmTenths");
}
if ((m_settings.m_fcPos != settings.m_fcPos) || force) {
reverseAPIKeys.append("fcPos");
}
if ((m_settings.m_transverterMode != settings.m_transverterMode) || force) {
reverseAPIKeys.append("transverterMode");
}
if ((m_settings.m_transverterDeltaFrequency != settings.m_transverterDeltaFrequency) || force) {
reverseAPIKeys.append("transverterDeltaFrequency");
}
if ((m_settings.m_LOppmTenths != settings.m_LOppmTenths) || force) {
reverseAPIKeys.append("LOppmTenths");
if (m_dev != 0)
{
const uint32_t msnaRegBase = 26; // Multisynth NA config register base
const int32_t msnaFreq = 800000000; // Multisynth NA target frequency
int32_t xo = 25000000; //Crystal frequency
int32_t a; // Multisynth NA XTAL multiplier integer 32 * 25mhz = 800mhz
int32_t b; // Multisynth NA XTAL multiplier fractional numerator 0 to 1048575
int32_t c; // Multisynth NA XTAL multiplier fractional denominator 1048575 max resolution
int64_t rem;
int32_t p1, p2, p3; // raw register values
xo = xo-xo/1000000*settings.m_LOppmTenths/10; //adjust crystal freq by ppm error
a = msnaFreq/xo; //multiplier integer
rem = msnaFreq%xo; // multiplier remainder
if (rem){ //fraction mode
b = ((rem * 10485750)/xo +5) /10; //multiplier fractional numerator with rounding
c = 1048575; //multiplier fractional divisor
rc = (hackrf_error) hackrf_si5351c_write(m_dev, 22, 128); // MSNA set fractional mode
qDebug() << "HackRFInput::applySettings: si5351c MSNA set to fraction mode.";
} else { //integer mode
b = 0;
c = 1;
rc = (hackrf_error) hackrf_si5351c_write(m_dev, 22, 0); // MSNA set integer mode
qDebug() << "HackRFInput::applySettings: si5351c MSNA set to integer mode.";
}
qDebug() << "HackRFInput::applySettings: si5351c MSNA rem" << rem;
qDebug() << "HackRFInput::applySettings: si5351c MSNA xoppm" << settings.m_LOppmTenths;
qDebug() << "HackRFInput::applySettings: si5351c MSNA xo" << xo;
qDebug() << "HackRFInput::applySettings: si5351c MSNA a" << a;
qDebug() << "HackRFInput::applySettings: si5351c MSNA b" << b;
qDebug() << "HackRFInput::applySettings: si5351c MSNA c" << c;
p1 = 128*a + (128 * b/c) - 512;
p2 = (128*b) % c;
p3 = c;
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev,msnaRegBase, (p3 >> 8) & 0xFF); // reg 26 MSNA_P3[15:8]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 1, p3 & 0xFF); // reg 27 MSNA_P3[7:0]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 2, (p1 >> 16) & 0x3); // reg28 bits 1:0 MSNA_P1[17:16]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 3, (p1 >> 8) & 0xFF); // reg 29 MSNA_P1[15:8]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 4, p1 & 0xFF); // reg 30 MSNA_P1[7:0]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 5, ((p3 & 0xF0000) >> 12) | ((p2 >> 16) & 0xF)); // bits 7:4 MSNA_P3[19:16], reg31 bits 3:0 MSNA_P2[19:16]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 6, (p2 >> 8) & 0xFF); // reg 32 MSNA_P2[15:8]
if (rc==HACKRF_SUCCESS) rc = (hackrf_error) hackrf_si5351c_write(m_dev, msnaRegBase + 7, p2 & 0xFF); // reg 33 MSNA_P2[7:0]
if (rc != HACKRF_SUCCESS) {
qDebug("HackRFInput::applySettings: XTAL error adjust failed: %s", hackrf_error_name(rc));
} else {
qDebug() << "HackRFInput::applySettings: si5351c MSNA registers"
<< msnaRegBase << "<-" << ((p3 >> 8) & 0xFF)
<< (msnaRegBase + 1) << "<-" << (p3 & 0xFF)
<< (msnaRegBase + 2) << "<-" << ((p1 >> 16) & 0x3)
<< (msnaRegBase + 3) << "<-" << ((p1 >> 8) & 0xFF)
<< (msnaRegBase + 4) << "<-" << (p1 & 0xFF)
<< (msnaRegBase + 5) << "<-" << (((p3 & 0xF0000) >> 12) | ((p2 >> 16) & 0xF))
<< (msnaRegBase + 6) << "<-" << ((p2 >> 8) & 0xFF)
<< (msnaRegBase + 7) << "<-" << (p2 & 0xFF);
qDebug() << "HackRFInput::applySettings: XTAL error adjusted by" << (settings.m_LOppmTenths/10.0) << "PPM." << settings.m_LOppmTenths;
}
}
}
if ((m_settings.m_fcPos != settings.m_fcPos) || force) {
reverseAPIKeys.append("fcPos");
}
if ((m_settings.m_transverterMode != settings.m_transverterMode) || force) {
reverseAPIKeys.append("transverterMode");
}
if ((m_settings.m_transverterDeltaFrequency != settings.m_transverterDeltaFrequency) || force) {
reverseAPIKeys.append("transverterDeltaFrequency");
}
if ((m_settings.m_centerFrequency != settings.m_centerFrequency) ||
(m_settings.m_devSampleRate != settings.m_devSampleRate) ||
(m_settings.m_LOppmTenths != settings.m_LOppmTenths) ||
(m_settings.m_log2Decim != settings.m_log2Decim) ||
(m_settings.m_fcPos != settings.m_fcPos) ||
(m_settings.m_transverterMode != settings.m_transverterMode) ||
@ -439,7 +500,7 @@ bool HackRFInput::applySettings(const HackRFInputSettings& settings, bool force)
settings.m_devSampleRate,
DeviceSampleSource::FrequencyShiftScheme::FSHIFT_TXSYNC,
settings.m_transverterMode);
setDeviceCenterFrequency(deviceCenterFrequency, settings.m_LOppmTenths);
setDeviceCenterFrequency(deviceCenterFrequency);
if (m_deviceAPI->getSinkBuddies().size() > 0) // forward to buddy if necessary
{

2
plugins/samplesource/hackrfinput/hackrfinput.h
View File

@ -159,7 +159,7 @@ private:
bool openDevice();
void closeDevice();
bool applySettings(const HackRFInputSettings& settings, bool force);
void setDeviceCenterFrequency(quint64 freq, qint32 LOppmTenths);
void setDeviceCenterFrequency(quint64 freq);
void webapiReverseSendSettings(QList<QString>& deviceSettingsKeys, const HackRFInputSettings& settings, bool force);
void webapiReverseSendStartStop(bool start);