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Code Issues Releases Wiki Activity

Setting gains

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This commit is contained in:
Anthony Arnold 2015-05-10 23:42:13 +10:00
parent 5f3ae0c66b
commit 96fc353fe4
6 changed files with 97 additions and 33 deletions
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1
src/algorithms/signal_source/adapters/CMakeLists.txt
View File

@ -146,6 +146,7 @@ include_directories(
${CMAKE_SOURCE_DIR}/src/core/system_parameters
${CMAKE_SOURCE_DIR}/src/core/interfaces
${CMAKE_SOURCE_DIR}/src/algorithms/libs
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/libs
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/gnuradio_blocks
${GLOG_INCLUDE_DIRS}
${GFlags_INCLUDE_DIRS}

17
src/algorithms/signal_source/gnuradio_blocks/rtl_tcp_signal_source_c.cc
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@ -32,7 +32,6 @@
#include "rtl_tcp_signal_source_c.h"
#include "rtl_tcp_commands.h"
#include "rtl_tcp_dongle_info.h"
#include <glog/logging.h>
#include <boost/thread/thread.hpp>
#include <map>
@ -118,15 +117,14 @@ rtl_tcp_signal_source_c::rtl_tcp_signal_source_c(const std::string &address,
}
// 5. Receive dongle info
rtl_tcp_dongle_info info;
ec = info.read (socket_);
ec = info_.read (socket_);
if (ec) {
std::cout << "Failed to read dongle info." << std::endl;
LOG (WARNING) << "Failed to read dongle info";
}
else if (info.is_valid ()) {
std::cout << "Found " << info.get_type_name() << " tuner." << std::endl;
LOG (INFO) << "Found " << info.get_type_name() << " tuner.";
else if (info_.is_valid ()) {
std::cout << "Found " << info_.get_type_name() << " tuner." << std::endl;
LOG (INFO) << "Found " << info_.get_type_name() << " tuner.";
}
// 6. Start reading
@ -204,8 +202,9 @@ void rtl_tcp_signal_source_c::set_agc_mode (bool agc) {
}
void rtl_tcp_signal_source_c::set_gain (int gain) {
unsigned clipped = static_cast<unsigned> (info_.clip_gain (gain) * 10.0);
boost::system::error_code ec =
rtl_tcp_command (RTL_TCP_SET_GAIN, gain, socket_);
rtl_tcp_command (RTL_TCP_SET_GAIN, clipped, socket_);
if (ec) {
std::cout << "Failed to set gain" << std::endl;
LOG (WARNING) << "Failed to set gain";
@ -217,6 +216,10 @@ void rtl_tcp_signal_source_c::set_if_gain (int gain) {
struct range {
double start, stop, step;
};
if (info_.get_tuner_type () != rtl_tcp_dongle_info::TUNER_E4000) {
return;
}
std::vector<range> ranges = {
{ -3, 6, 9 },
{ 0, 9, 3 },

3
src/algorithms/signal_source/gnuradio_blocks/rtl_tcp_signal_source_c.h
View File

@ -38,6 +38,7 @@
#ifndef GNSS_SDR_RTL_TCP_SIGNAL_SOURCE_C_H
#define GNSS_SDR_RTL_TCP_SIGNAL_SOURCE_C_H
#include "rtl_tcp_dongle_info.h"
#include <boost/asio.hpp>
#include <gnuradio/sync_block.h>
#include <string>
@ -87,6 +88,8 @@ private:
short port,
bool flip_iq);
rtl_tcp_dongle_info info_;
// IO members
boost::asio::io_service io_service_;
boost::asio::ip::tcp::socket socket_;

54
src/algorithms/signal_source/libs/rtl_tcp_dongle_info.cc
View File

@ -32,6 +32,7 @@
*/
#include "rtl_tcp_dongle_info.h"
#include <string.h>
#include <boost/foreach.hpp>
using boost::asio::ip::tcp;
@ -85,6 +86,59 @@ const char *rtl_tcp_dongle_info::get_type_name () const {
}
}
double rtl_tcp_dongle_info::clip_gain (int gain) const {
// the following gain values have been copied from librtlsdr
// all gain values are expressed in tenths of a dB
std::vector<double> gains;
switch (get_tuner_type()) {
case TUNER_E4000:
gains = { -10, 15, 40, 65, 90, 115, 140, 165, 190, 215,
240, 290, 340, 420 };
break;
case TUNER_FC0012:
gains = { -99, -40, 71, 179, 192 };
break;
case TUNER_FC0013:
gains = { -99, -73, -65, -63, -60, -58, -54, 58, 61,
63, 65, 67, 68, 70, 71, 179, 181, 182,
184, 186, 188, 191, 197 };
break;
case TUNER_R820T:
gains = { 0, 9, 14, 27, 37, 77, 87, 125, 144, 157,
166, 197, 207, 229, 254, 280, 297, 328,
338, 364, 372, 386, 402, 421, 434, 439,
445, 480, 496 };
break;
default:
// no gains
break;
}
// clip
if (gains.size() == 0) {
// no defined gains to clip to
return gain;
}
else {
double last_stop = gains.front ();
BOOST_FOREACH (double g, gains) {
g /= 10.0;
if (gain < g) {
if (std::abs (gain - g) < std::abs (gain - last_stop)) {
return g;
}
else {
return last_stop;
}
}
last_stop = g;
}
return last_stop;
}
}
bool rtl_tcp_dongle_info::is_valid () const {
return ::memcmp (magic_, "RTL0", 4) == 0;
}

2
src/algorithms/signal_source/libs/rtl_tcp_dongle_info.h
View File

@ -65,6 +65,8 @@ class rtl_tcp_dongle_info {
const char *get_type_name () const;
double clip_gain (int gain) const;
inline uint32_t get_tuner_type () const {
return tuner_type_;
}

53
src/core/receiver/CMakeLists.txt
View File

@ -16,10 +16,10 @@
# along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
#
set(GNSS_RECEIVER_SOURCES
control_thread.cc
control_message_factory.cc
file_configuration.cc
set(GNSS_RECEIVER_SOURCES
control_thread.cc
control_message_factory.cc
file_configuration.cc
gnss_block_factory.cc
gnss_flowgraph.cc
in_memory_configuration.cc
@ -34,6 +34,7 @@ include_directories(
${CMAKE_SOURCE_DIR}/src/core/libs/supl/asn-rrlp
${CMAKE_SOURCE_DIR}/src/core/libs/supl/asn-supl
${CMAKE_SOURCE_DIR}/src/algorithms/libs
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/libs
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/adapters
${CMAKE_SOURCE_DIR}/src/algorithms/signal_source/gnuradio_blocks
${CMAKE_SOURCE_DIR}/src/algorithms/output_filter/adapters
@ -104,27 +105,27 @@ file(GLOB GNSS_RECEIVER_INTERFACE_HEADERS "../interfaces/*.h")
add_library(gnss_rx ${GNSS_RECEIVER_SOURCES} ${GNSS_RECEIVER_HEADERS} ${GNSS_RECEIVER_INTERFACE_HEADERS})
source_group(Headers FILES ${GNSS_RECEIVER_HEADERS} ${GNSS_RECEIVER_INTERFACE_HEADERS})
target_link_libraries(gnss_rx ${Boost_LIBRARIES}
${ARMADILLO_LIBRARIES}
${GNURADIO_RUNTIME_LIBRARIES}
${GNURADIO_BLOCKS_LIBRARIES}
${GNURADIO_FFT_LIBRARIES}
${GNURADIO_FILTER_LIBRARIES}
gnss_system_parameters
gnss_sp_libs
signal_source_adapters
datatype_adapters
input_filter_adapters
conditioner_adapters
resampler_adapters
acq_adapters
tracking_lib
tracking_adapters
channel_adapters
telemetry_decoder_adapters
obs_adapters
pvt_adapters
pvt_lib
out_adapters
target_link_libraries(gnss_rx ${Boost_LIBRARIES}
${ARMADILLO_LIBRARIES}
${GNURADIO_RUNTIME_LIBRARIES}
${GNURADIO_BLOCKS_LIBRARIES}
${GNURADIO_FFT_LIBRARIES}
${GNURADIO_FILTER_LIBRARIES}
gnss_system_parameters
gnss_sp_libs
signal_source_adapters
datatype_adapters
input_filter_adapters
conditioner_adapters
resampler_adapters
acq_adapters
tracking_lib
tracking_adapters
channel_adapters
telemetry_decoder_adapters
obs_adapters
pvt_adapters
pvt_lib
out_adapters
rx_core_lib
)