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Working generator mode

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This commit is contained in:
Jan Käberich 2020-09-13 18:01:32 +02:00
parent b7033a029e
commit aae01a602e
14 changed files with 172 additions and 39 deletions
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77
Software/VNA_embedded/Application/VNA.cpp
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@ -490,3 +490,80 @@ bool VNA::Ref::applySettings(Protocol::ReferenceSettings s) {
}
return false;
}
bool VNA::ConfigureGenerator(Protocol::GeneratorSettings g) {
Protocol::ManualControl m;
// LOs not required
m.LO1CE = 0;
m.LO1Frequency = 1000000000;
m.LO1RFEN = 0;
m.LO1RFEN = 0;
m.LO2EN = 0;
m.LO2Frequency = 60000000;
m.Port1EN = 0;
m.Port2EN = 0;
m.RefEN = 0;
m.Samples = 131072;
// Select correct source
if(g.frequency < BandSwitchFrequency) {
m.SourceLowEN = 1;
m.SourceLowFrequency = g.frequency;
m.SourceHighCE = 0;
m.SourceHighRFEN = 0;
m.SourceHighFrequency = BandSwitchFrequency;
m.SourceHighLowpass = (int) FPGA::LowpassFilter::M947;
m.SourceHighPower = (int) MAX2871::Power::n4dbm;
m.SourceHighband = false;
} else {
m.SourceLowEN = 0;
m.SourceLowFrequency = BandSwitchFrequency;
m.SourceHighCE = 1;
m.SourceHighRFEN = 1;
m.SourceHighFrequency = g.frequency;
if(g.frequency < 900000000UL) {
m.SourceHighLowpass = (int) FPGA::LowpassFilter::M947;
} else if(g.frequency < 1800000000UL) {
m.SourceHighLowpass = (int) FPGA::LowpassFilter::M1880;
} else if(g.frequency < 3500000000UL) {
m.SourceHighLowpass = (int) FPGA::LowpassFilter::M3500;
} else {
m.SourceHighLowpass = (int) FPGA::LowpassFilter::None;
}
m.SourceHighband = true;
}
switch(g.activePort) {
case 0:
// no output signal, disable
m.AmplifierEN = 0;
m.SourceHighCE = 0;
m.SourceHighRFEN = 0;
m.SourceLowEN = 0;
break;
case 1:
m.AmplifierEN = 1;
m.PortSwitch = 0;
break;
case 2:
m.AmplifierEN = 1;
m.PortSwitch = 1;
break;
}
// Set level (not very accurate)
if(g.cdbm_level > -1000) {
// use higher source power (approx 0dbm with no attenuation)
m.SourceHighPower = (int) MAX2871::Power::p5dbm;
m.SourceLowPower = (int) Si5351C::DriveStrength::mA8;
} else {
// use lower source power (approx -10dbm with no attenuation)
m.SourceHighPower = (int) MAX2871::Power::n4dbm;
m.SourceLowPower = (int) Si5351C::DriveStrength::mA2;
g.cdbm_level += 1000;
}
// calculate required attenuation
uint16_t attval = -g.cdbm_level / 25;
if(attval > 127) {
attval = 127;
}
m.attenuator = attval;
return ConfigureManual(m, nullptr);
}