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Apply frequency correction.

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This commit is contained in:
Alexandru Csete 2012-05-06 15:59:48 +02:00
parent 1947529edd
commit a20c6c3707
2 changed files with 8 additions and 4 deletions
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11
dsp/rx_source_fcd.cpp
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@ -34,6 +34,7 @@ rx_source_fcd_sptr make_rx_source_fcd(const std::string device_name)
rx_source_fcd::rx_source_fcd(const std::string device_name)
: rx_source_base("rx_source_fcd"),
d_freq(144.5e6),
d_freq_corr(-12), // S/N 820 or greater
d_gain(20.0)
{
d_audio_src = make_pa_source(device_name, 96000, 2, "GQRX", "I/Q input");
@ -71,11 +72,14 @@ void rx_source_fcd::select_device(const std::string device_name)
void rx_source_fcd::set_freq(double freq)
{
FCD_MODE_ENUM fme;
double f = freq;
if ((freq >= get_freq_min()) && (freq <= get_freq_max()))
{
d_freq = freq;
fme = fcdAppSetFreq((int) d_freq);
f *= 1.0 + d_freq_corr/1000000.0;
fme = fcdAppSetFreq((int)f);
if (fme != FCD_MODE_APP)
{
@ -181,9 +185,8 @@ std::vector<double> rx_source_fcd::get_sample_rates()
/** FIXME: Remove? */
void rx_source_fcd::set_freq_corr(int ppm)
{
//d_fcd_src->set_freq_corr(ppm);
// re-tune after frequency correction
//d_fcd_src->set_freq((float) d_freq);
d_freq_corr = ppm;
set_freq(d_freq);
}
/** FIXME: Remove? */

1
dsp/rx_source_fcd.h
View File

@ -78,6 +78,7 @@ private:
gr_float_to_complex_sptr d_f2c; /*! Block to MUX audio L/R into complex I/Q. */
std::vector<double> d_sample_rates; /*! Supported sample rates. */
double d_freq; /*! Current RF frequency. */
int d_freq_corr; /*! Current frequency correction in ppm. */
double d_gain; /*! Current RF gain. */
};