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twinrx: set lo2 to use new low spur tuning mode

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This commit is contained in:
Mark Meserve 2019-05-03 16:46:57 -05:00 committed by michael-west
parent 9609aeb4be
commit a01e54f997
2 changed files with 3 additions and 6 deletions
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2
host/lib/usrp/dboard/db_twinrx.cpp
View File

@ -127,7 +127,7 @@ public:
"los/LO2/charge_pump/value",
prepend_ch("los/LO2/charge_pump/desired", _ch_name),
prepend_ch("los/LO2/charge_pump/coerced", _ch_name),
0.3125e-6,
1.25e-6,
AUTO_RESOLVE_ON_READ_WRITE);
//Gain Specific

7
host/lib/usrp/dboard/twinrx/twinrx_ctrl.cpp
View File

@ -134,6 +134,8 @@ public:
_lo2_iface[i]->set_output_power(adf435x_iface::OUTPUT_POWER_5DBM);
_lo2_iface[i]->set_reference_freq(TWINRX_DESIRED_REFERENCE_FREQ);
_lo2_iface[i]->set_muxout_mode(adf435x_iface::MUXOUT_DLD);
_lo2_iface[i]->set_tuning_mode(adf435x_iface::TUNING_MODE_LOW_SPUR);
_lo2_iface[i]->set_prescaler(adf435x_iface::PRESCALER_8_9);
}
commit();
}
@ -449,18 +451,13 @@ public:
double set_lo2_synth_freq(channel_t ch, double freq, bool commit = true)
{
boost::lock_guard<boost::mutex> lock(_mutex);
static const double PRESCALER_THRESH = 3.6e9;
double coerced_freq = 0.0;
if (ch == CH1 or ch == BOTH) {
_lo2_iface[size_t(CH1)]->set_prescaler(freq > PRESCALER_THRESH ?
adf435x_iface::PRESCALER_8_9 : adf435x_iface::PRESCALER_4_5);
coerced_freq = _lo2_iface[size_t(CH1)]->set_frequency(freq, false, false);
_lo2_freq[size_t(CH1)] = tune_freq_t(freq);
}
if (ch == CH2 or ch == BOTH) {
_lo2_iface[size_t(CH2)]->set_prescaler(freq > PRESCALER_THRESH ?
adf435x_iface::PRESCALER_8_9 : adf435x_iface::PRESCALER_4_5);
coerced_freq = _lo2_iface[size_t(CH2)]->set_frequency(freq, false, false);
_lo2_freq[size_t(CH2)] = tune_freq_t(freq);
}