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FT4 now transmits a waveform generated from Gaussian-filtered frequency changes.

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This commit is contained in:
Joe Taylor
2019-02-21 12:10:27 -05:00
parent 57a20f838f
commit aeddaeab9e
2 changed files with 20 additions and 5 deletions
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widgets/mainwindow.cpp
+13 -2
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@@ -102,6 +102,9 @@ extern "C" {
void genft4_(char* msg, int* ichk, char* msgsent, int itone[],
fortran_charlen_t, fortran_charlen_t);
void gen_ft4wave_(int itone[], int* nsym, int* nsps, float* fsample, float* f0,
float wave[], int* nwave);
void gen4_(char* msg, int* ichk, char* msgsent, int itone[],
int* itext, fortran_charlen_t, fortran_charlen_t);
@@ -6869,8 +6872,8 @@ void MainWindow::transmit (double snr)
}
if (m_modeTx == "FT4") {
toneSpacing=12000.0/512.0;
// if(SpecOp::FOX==m_config.special_op_id() and !m_tune) toneSpacing=-1;
// toneSpacing=12000.0/512.0; //Generate Tx waveform from itone[] array
toneSpacing=-2.0; //Transmit a pre-computed, filtered waveform.
Q_EMIT sendMessage (NUM_FT4_SYMBOLS,
512.0, ui->TxFreqSpinBox->value() - m_XIT,
toneSpacing, m_soundOutput, m_config.audio_output_channel (),
@@ -8757,6 +8760,14 @@ void MainWindow::ft4_tx(int ntx)
g_iptt = 1;
setRig ();
setXIT (ui->TxFreqSpinBox->value ());
int nsym=103;
int nsps=4*512;
float fsample=48000.0;
float f0=ui->TxFreqSpinBox->value() - m_XIT;
int nwave=(nsym+2)*nsps;
gen_ft4wave_(const_cast<int *>(itone),&nsym,&nsps,&fsample,&f0,foxcom_.wave,&nwave);
Q_EMIT m_config.transceiver_ptt (true); //Assert the PTT
m_tx_when_ready = true;
qint64 ms=QDateTime::currentMSecsSinceEpoch();