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Code Issues Releases Wiki Activity

Improving Flexiband signal source multichannel configuration options

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This commit is contained in:
Javier Arribas
2019-03-29 17:34:06 +01:00
parent 1cf49f461a
commit dff91e1216
2 changed files with 33 additions and 10 deletions
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38
src/algorithms/signal_source/adapters/flexiband_signal_source.cc
View File

@@ -65,22 +65,31 @@ FlexibandSignalSource::FlexibandSignalSource(ConfigurationInterface* configurati
usb_packet_buffer_size_ = configuration->property(role + ".usb_packet_buffer", 128);
RF_channels_ = configuration->property(role + ".RF_channels", 1);
n_channels_ = configuration->property(role + ".total_channels", 0);
if (n_channels_ == 0)
{
n_channels_ = configuration->property(role + ".RF_channels", 1);
}
sel_ch_ = configuration->property(role + ".sel_ch", 1);
if (sel_ch_ > n_channels_)
{
LOG(WARNING) << "Invalid RF channel selection";
}
if (item_type_ == "gr_complex")
{
item_size_ = sizeof(gr_complex);
flexiband_source_ = gr::teleorbit::frontend::make(firmware_filename_.c_str(), gain1_, gain2_, gain3_, AGC_, usb_packet_buffer_size_, signal_file.c_str(), flag_read_file);
//create I, Q -> gr_complex type conversion blocks
for (int n = 0; n < (RF_channels_ * 2); n++)
for (int n = 0; n < (n_channels_ * 2); n++)
{
char_to_float.push_back(gr::blocks::char_to_float::make());
}
for (int n = 0; n < RF_channels_; n++)
for (int n = 0; n < n_channels_; n++)
{
float_to_complex_.push_back(gr::blocks::float_to_complex::make());
null_sinks_.push_back(gr::blocks::null_sink::make(sizeof(gr_complex)));
}
DLOG(INFO) << "Item size " << item_size_;
@@ -108,15 +117,16 @@ FlexibandSignalSource::~FlexibandSignalSource() = default;
void FlexibandSignalSource::connect(gr::top_block_sptr top_block)
{
for (int n = 0; n < (RF_channels_ * 2); n++)
for (int n = 0; n < (n_channels_ * 2); n++)
{
top_block->connect(flexiband_source_, n, char_to_float.at(n), 0);
DLOG(INFO) << "connected flexiband_source_ to char_to_float CH" << n;
}
for (int n = 0; n < RF_channels_; n++)
for (int n = 0; n < n_channels_; n++)
{
top_block->connect(char_to_float.at(n * 2), 0, float_to_complex_.at(n), 0);
top_block->connect(char_to_float.at(n * 2 + 1), 0, float_to_complex_.at(n), 1);
top_block->connect(float_to_complex_.at(n), 0, null_sinks_.at(n), 0);
DLOG(INFO) << "connected char_to_float to float_to_complex_ CH" << n;
}
}
@@ -124,15 +134,16 @@ void FlexibandSignalSource::connect(gr::top_block_sptr top_block)
void FlexibandSignalSource::disconnect(gr::top_block_sptr top_block)
{
for (int n = 0; n < (RF_channels_ * 2); n++)
for (int n = 0; n < (n_channels_ * 2); n++)
{
top_block->disconnect(flexiband_source_, n, char_to_float.at(n), 0);
DLOG(INFO) << "disconnect flexiband_source_ to char_to_float CH" << n;
}
for (int n = 0; n < RF_channels_; n++)
for (int n = 0; n < n_channels_; n++)
{
top_block->disconnect(char_to_float.at(n * 2), 0, float_to_complex_.at(n), 0);
top_block->disconnect(char_to_float.at(n * 2 + 1), 0, float_to_complex_.at(n), 1);
top_block->disconnect(float_to_complex_.at(n), 0, null_sinks_.at(n), 0);
DLOG(INFO) << "disconnect char_to_float to float_to_complex_ CH" << n;
}
}
@@ -152,5 +163,14 @@ gr::basic_block_sptr FlexibandSignalSource::get_right_block()
gr::basic_block_sptr FlexibandSignalSource::get_right_block(int RF_channel)
{
return float_to_complex_.at(RF_channel);
if (RF_channel == 0)
{
//in the first RF channel, return the signalsource selected channel.
//this trick enables the use of the second or the third frequency of a FlexiBand signal without a dual frequency configuration
return float_to_complex_.at(sel_ch_ - 1);
}
else
{
return float_to_complex_.at(RF_channel);
}
}

5
src/algorithms/signal_source/adapters/flexiband_signal_source.h
View File

@@ -38,6 +38,7 @@
#include <gnuradio/blocks/char_to_float.h>
#include <gnuradio/blocks/file_sink.h>
#include <gnuradio/blocks/float_to_complex.h>
#include <gnuradio/blocks/null_sink.h>
#include <gnuradio/hier_block2.h>
#include <gnuradio/msg_queue.h>
#include <string>
@@ -99,12 +100,14 @@ private:
std::string signal_file;
bool flag_read_file;
int RF_channels_;
int n_channels_;
int sel_ch_;
gr::block_sptr flexiband_source_;
std::vector<boost::shared_ptr<gr::block>> char_to_float;
std::vector<boost::shared_ptr<gr::block>> float_to_complex_;
std::vector<gr::blocks::null_sink::sptr> null_sinks_;
boost::shared_ptr<gr::msg_queue> queue_;
};