Adding support for dual channel in FMCOMMS2 and optional Local Oscillator generation using FMCOMMS2 TX channel

cmake/Modules/Findlibiio.cmake

@@ -0,0 +1,32 @@
+INCLUDE(FindPkgConfig)
+PKG_CHECK_MODULES(PC_LIBIIO libiio)
+
+FIND_PATH(
+    LIBIIO_INCLUDE_DIRS
+    NAMES gnuradio/iio/api.h
+    HINTS $ENV{LIBIIO_DIR}/include
+        ${PC_LIBIIO_INCLUDEDIR}
+    PATHS ${CMAKE_INSTALL_PREFIX}/include
+          /usr/local/include
+          /usr/include
+)
+
+FIND_LIBRARY(
+    LIBIIO_LIBRARIES
+    NAMES libiio.so
+    HINTS $ENV{LIBIIO_DIR}/lib
+        ${PC_LIBIIO_LIBDIR}
+    PATHS ${CMAKE_INSTALL_PREFIX}/lib
+          ${CMAKE_INSTALL_PREFIX}/lib64
+          /usr/local/lib
+          /usr/local/lib64
+          /usr/lib
+          /usr/lib64
+          /usr/lib/x86_64-linux-gnu
+)
+
+message("find libiio:")
+message(${LIBIIO_LIBRARIES})
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(LIBIIO DEFAULT_MSG LIBIIO_LIBRARIES LIBIIO_INCLUDE_DIRS)
+MARK_AS_ADVANCED(LIBIIO_LIBRARIES LIBIIO_INCLUDE_DIRS)

conf/gnss-sdr_GPS_L1_2ch_fmcomms2_realtime.conf

@@ -0,0 +1,114 @@
+; You can define your own receiver and invoke it by doing
+; gnss-sdr --config_file=my_GNSS_SDR_configuration.conf
+;
+
+[GNSS-SDR]
+
+;######### GLOBAL OPTIONS ##################
+;internal_fs_sps: Internal signal sampling frequency after the signal conditioning stage [Sps].
+;FOR USE GNSS-SDR WITH RTLSDR DONGLES USER MUST SET THE CALIBRATED SAMPLE RATE HERE
+; i.e. using front-end-cal as reported here:http://www.cttc.es/publication/turning-a-television-into-a-gnss-receiver/
+GNSS-SDR.internal_fs_sps=7000000
+
+;######### SIGNAL_SOURCE CONFIG ############
+SignalSource.implementation=Fmcomms2_Signal_Source
+SignalSource.item_type=gr_complex
+SignalSource.device_address=192.168.0.4
+SignalSource.sampling_frequency=7000000
+SignalSource.freq=1575420000
+SignalSource.bandwidth=4000000
+SignalSource.RF_channels=2
+SignalSource.rx1_enable=true
+SignalSource.rx2_enable=true
+SignalSource.gain_mode_rx1=slow_attack
+SignalSource.gain_mode_rx2=slow_attack
+SignalSource.rf_port_select=A_BALANCED
+SignalSource.gain_rx1=64
+SignalSource.gain_rx2=64
+SignalSource.samples=0
+SignalSource.repeat=false
+SignalSource.dump=false
+SignalSource.dump_filename=../data/signal_source.dat
+SignalSource.enable_throttle_control=false
+SignalSource.enable_dds_lo=false
+SignalSource.freq_rf_tx_hz=1260000000
+SignalSource.freq_dds_tx_hz=1000
+SignalSource.scale_dds_dbfs=0.0
+SignalSource.phase_dds_deg=0.0
+SignalSource.tx_attenuation_db=0.0
+
+
+;######### SIGNAL_CONDITIONER CONFIG ############
+SignalConditioner0.implementation=Pass_Through
+SignalConditioner1.implementation=Pass_Through
+
+;######### CHANNELS GLOBAL CONFIG ############
+Channels_1C.count=8
+Channels.in_acquisition=1
+
+;# CHANNEL CONNECTION
+Channel0.RF_channel_ID=0
+Channel0.signal=1C
+Channel1.RF_channel_ID=0
+Channel1.signal=1C
+Channel2.RF_channel_ID=0
+Channel2.signal=1C
+Channel3.RF_channel_ID=0
+Channel3.signal=1C
+Channel4.RF_channel_ID=1
+Channel4.signal=1C
+Channel5.RF_channel_ID=1
+Channel5.signal=1C
+Channel6.RF_channel_ID=1
+Channel6.signal=1C
+Channel7.RF_channel_ID=1
+Channel7.signal=1C
+
+;######### ACQUISITION GLOBAL CONFIG ############
+Acquisition_1C.implementation=GPS_L1_CA_PCPS_Acquisition
+Acquisition_1C.item_type=gr_complex
+Acquisition_1C.threshold=20
+Acquisition_1C.use_CFAR_algorithm=false
+Acquisition_1C.blocking=true
+Acquisition_1C.doppler_max=10000
+Acquisition_1C.doppler_step=250
+Acquisition_1C.dump=false
+Acquisition_1C.dump_filename=./acq_dump.dat
+
+
+;######### TRACKING GLOBAL CONFIG ############
+Tracking_1C.implementation=GPS_L1_CA_DLL_PLL_Tracking
+Tracking_1C.item_type=gr_complex
+Tracking_1C.dump=false
+Tracking_1C.dump_filename=./tracking_ch_
+Tracking_1C.pll_bw_hz=35.0;
+Tracking_1C.dll_bw_hz=2.0;
+Tracking_1C.early_late_space_chips=0.5;
+
+
+;######### TELEMETRY DECODER GPS CONFIG ############
+TelemetryDecoder_1C.implementation=GPS_L1_CA_Telemetry_Decoder
+TelemetryDecoder_1C.dump=false
+
+
+;######### OBSERVABLES CONFIG ############
+Observables.implementation=Hybrid_Observables
+Observables.dump=false
+Observables.dump_filename=./observables.dat
+
+
+;######### PVT CONFIG ############
+PVT.implementation=RTKLIB_PVT
+PVT.positioning_mode=Single  ; options: Single, Static, Kinematic, PPP_Static, PPP_Kinematic
+PVT.iono_model=Broadcast ; options: OFF, Broadcast, SBAS, Iono-Free-LC, Estimate_STEC, IONEX
+PVT.trop_model=Saastamoinen ; options: OFF, Saastamoinen, SBAS, Estimate_ZTD, Estimate_ZTD_Grad
+PVT.output_rate_ms=100
+PVT.display_rate_ms=500
+PVT.dump_filename=./PVT
+PVT.nmea_dump_filename=./gnss_sdr_pvt.nmea;
+PVT.flag_nmea_tty_port=false;
+PVT.nmea_dump_devname=/dev/pts/4
+PVT.flag_rtcm_server=false
+PVT.flag_rtcm_tty_port=false
+PVT.rtcm_dump_devname=/dev/pts/1
+PVT.dump=false

src/algorithms/signal_source/adapters/fmcomms2_signal_source.cc

@@ -32,7 +32,9 @@
 #include "fmcomms2_signal_source.h"
 #include "configuration_interface.h"
 #include "gnss_sdr_valve.h"
+#include "ad9361_manager.h"
 #include "GPS_L1_CA.h"
+#include "GPS_L2C.h"
 #include <glog/logging.h>
 #include <iostream>
 
@@ -55,6 +57,7 @@ Fmcomms2SignalSource::Fmcomms2SignalSource(ConfigurationInterface* configuration
     quadrature_ = configuration->property(role + ".quadrature", true);
     rf_dc_ = configuration->property(role + ".rf_dc", true);
     bb_dc_ = configuration->property(role + ".bb_dc", true);
+    RF_channels_ = configuration->property(role + ".RF_channels", 1);
     gain_mode_rx1_ = configuration->property(role + ".gain_mode_rx1", std::string("manual"));
     gain_mode_rx2_ = configuration->property(role + ".gain_mode_rx2", std::string("manual"));
     rf_gain_rx1_ = configuration->property(role + ".gain_rx1", 64.0);
@@ -67,6 +70,15 @@ Fmcomms2SignalSource::Fmcomms2SignalSource(ConfigurationInterface* configuration
     dump_ = configuration->property(role + ".dump", false);
     dump_filename_ = configuration->property(role + ".dump_filename", default_dump_file);
 
+    //AD9361 Local Oscillator generation for dual band operation
+    enable_dds_lo_=configuration->property(role + ".enable_dds_lo", false);
+    freq_rf_tx_hz_=configuration->property(role + ".freq_rf_tx_hz", GPS_L1_FREQ_HZ-GPS_L2_FREQ_HZ-1000);
+    freq_dds_tx_hz_=configuration->property(role + ".freq_dds_tx_hz", 1000);
+    scale_dds_dbfs_=configuration->property(role + ".scale_dds_dbfs", 0.0);
+    phase_dds_deg_=configuration->property(role + ".phase_dds_deg", 0.0);
+    tx_attenuation_db_=configuration->property(role + ".tx_attenuation_db", 0.0);
+
+
     item_size_ = sizeof(gr_complex);
 
     std::cout << "device address: " << uri_ << std::endl;
@@ -75,15 +87,72 @@ Fmcomms2SignalSource::Fmcomms2SignalSource(ConfigurationInterface* configuration
 
     if (item_type_.compare("gr_complex") == 0)
         {
-            fmcomms2_source_f32c_ = gr::iio::fmcomms2_source_f32c::make(
+            if (RF_channels_==1)
-                uri_.c_str(), freq_, sample_rate_,
+            {
-                bandwidth_,
+                if (rx1_en_ and rx2_en_)
-                rx1_en_, rx2_en_,
+                {
-                buffer_size_, quadrature_, rf_dc_,
+                    LOG(FATAL) << "Configuration error: both rx1 and rx2 are enabled but RF_channels=1 !";
-                bb_dc_, gain_mode_rx1_.c_str(), rf_gain_rx1_,
+                }
-                gain_mode_rx2_.c_str(), rf_gain_rx2_,
+                else
-                rf_port_select_.c_str(), filter_file_.c_str(),
+                {
-                filter_auto_);
+                    fmcomms2_source_f32c_ = gr::iio::fmcomms2_source_f32c::make(
+                        uri_.c_str(), freq_, sample_rate_,
+                        bandwidth_,
+                        rx1_en_, rx2_en_,
+                        buffer_size_, quadrature_, rf_dc_,
+                        bb_dc_, gain_mode_rx1_.c_str(), rf_gain_rx1_,
+                        gain_mode_rx2_.c_str(), rf_gain_rx2_,
+                        rf_port_select_.c_str(), filter_file_.c_str(),
+                        filter_auto_);
+
+                    //configure LO
+                    if (enable_dds_lo_==true)
+                    {
+                        std::cout<<"Enabling Local Oscillator generator in FMCOMMS2\n";
+                        config_ad9361_lo_remote(uri_,
+                                                bandwidth_,
+                                                sample_rate_,
+                                                freq_rf_tx_hz_,
+                                                tx_attenuation_db_,
+                                                freq_dds_tx_hz_,
+                                                scale_dds_dbfs_);
+                    }
+                }
+            }
+            else if(RF_channels_==2)
+            {
+                if (!(rx1_en_ and rx2_en_))
+                {
+                    LOG(FATAL) << "Configuration error: RF_channels=2 but are not enabled both receivers in FMCOMMS2 !";
+                }
+                else
+                {
+                    fmcomms2_source_f32c_ = gr::iio::fmcomms2_source_f32c::make(
+                        uri_.c_str(), freq_, sample_rate_,
+                        bandwidth_,
+                        rx1_en_, rx2_en_,
+                        buffer_size_, quadrature_, rf_dc_,
+                        bb_dc_, gain_mode_rx1_.c_str(), rf_gain_rx1_,
+                        gain_mode_rx2_.c_str(), rf_gain_rx2_,
+                        rf_port_select_.c_str(), filter_file_.c_str(),
+                        filter_auto_);
+                    //configure LO
+                    if (enable_dds_lo_==true)
+                    {
+                        std::cout<<"Enabling Local Oscillator generator in FMCOMMS2\n";
+                        config_ad9361_lo_remote(uri_,
+                                                bandwidth_,
+                                                sample_rate_,
+                                                freq_rf_tx_hz_,
+                                                tx_attenuation_db_,
+                                                freq_dds_tx_hz_,
+                                                scale_dds_dbfs_);
+                    }
+                }
+            }else{
+                LOG(FATAL) << "Configuration error: Unsupported number of RF_channels !";
+            }
+
         }
     else
         {
@@ -108,6 +177,10 @@ Fmcomms2SignalSource::Fmcomms2SignalSource(ConfigurationInterface* configuration
 
 Fmcomms2SignalSource::~Fmcomms2SignalSource()
 {
+    if (enable_dds_lo_==true)
+    {
+        ad9361_disable_lo_remote(uri_);
+    }
 }
 
 

src/algorithms/signal_source/adapters/fmcomms2_signal_source.h

@@ -88,6 +88,7 @@ private:
     bool quadrature_;
     bool rf_dc_;
     bool bb_dc_;
+    int RF_channels_;
     std::string gain_mode_rx1_;
     std::string gain_mode_rx2_;
     double rf_gain_rx1_;
@@ -96,6 +97,14 @@ private:
     std::string filter_file_;
     bool filter_auto_;
 
+    //DDS configuration for LO generation for external mixer
+    bool enable_dds_lo_;
+    unsigned long freq_rf_tx_hz_;
+    unsigned long freq_dds_tx_hz_;
+    double scale_dds_dbfs_;
+    double phase_dds_deg_;
+    double tx_attenuation_db_;
+
     unsigned int in_stream_;
     unsigned int out_stream_;
 

src/algorithms/signal_source/libs/CMakeLists.txt

@@ -16,16 +16,58 @@
 # along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
 #
 
+if(ENABLE_PLUTOSDR OR ENABLE_FMCOMMS2)
+   find_package(iio REQUIRED)
+   if(NOT IIO_FOUND)
+      message(STATUS "gnuradio-iio not found, its installation is required.")
+      message(STATUS "Please build and install the following projects:")
+      message(STATUS " * libiio from https://github.com/analogdevicesinc/libiio")
+      message(STATUS " * libad9361-iio from https://github.com/analogdevicesinc/libad9361-iio")
+      message(STATUS " * gnuradio-iio from https://github.com/analogdevicesinc/gr-iio")
+      message(FATAL_ERROR "gnuradio-iio required for building gnss-sdr with this option enabled")
+   endif(NOT IIO_FOUND)
+   set(OPT_LIBRARIES ${OPT_LIBRARIES} ${IIO_LIBRARIES})
+   set(OPT_DRIVER_INCLUDE_DIRS ${OPT_DRIVER_INCLUDE_DIRS} ${IIO_INCLUDE_DIRS})
+   
+   find_package(libiio REQUIRED)
+   if(NOT LIBIIO_FOUND)
+      message(STATUS "gnuradio-iio not found, its installation is required.")
+      message(STATUS "Please build and install the following projects:")
+      message(STATUS " * libiio from https://github.com/analogdevicesinc/libiio")
+      message(STATUS " * libad9361-iio from https://github.com/analogdevicesinc/libad9361-iio")
+      message(STATUS " * gnuradio-iio from https://github.com/analogdevicesinc/gr-iio")
+      message(FATAL_ERROR "gnuradio-iio required for building gnss-sdr with this option enabled")
+   endif(NOT LIBIIO_FOUND)
+   set(OPT_LIBRARIES ${OPT_LIBRARIES} ${LIBIIO_LIBRARIES})
+   set(OPT_DRIVER_INCLUDE_DIRS ${OPT_DRIVER_INCLUDE_DIRS} ${LIBIIO_INCLUDE_DIRS})
+   
+endif(ENABLE_PLUTOSDR OR ENABLE_FMCOMMS2)
+
+if(ENABLE_FMCOMMS2)
+    ###############################################
+    # FMCOMMS2 based SDR Hardware
+    ###############################################
+    if(IIO_FOUND)
+        set(OPT_SIGNAL_SOURCE_LIB_SOURCES ad9361_manager.cc)
+    endif(IIO_FOUND)
+endif(ENABLE_FMCOMMS2)
+
 set (SIGNAL_SOURCE_LIB_SOURCES
   rtl_tcp_commands.cc
-  rtl_tcp_dongle_info.cc)
+  rtl_tcp_dongle_info.cc
+  ${OPT_SIGNAL_SOURCE_LIB_SOURCES})
 
 include_directories(
      ${CMAKE_CURRENT_SOURCE_DIR}
      ${Boost_INCLUDE_DIRS}
+     ${OPT_DRIVER_INCLUDE_DIRS}
 )
 
+
 file(GLOB SIGNAL_SOURCE_LIB_HEADERS "*.h")
 list(SORT SIGNAL_SOURCE_LIB_HEADERS)
 add_library(signal_source_lib ${SIGNAL_SOURCE_LIB_SOURCES} ${SIGNAL_SOURCE_LIB_HEADERS})
 source_group(Headers FILES ${SIGNAL_SOURCE_LIB_HEADERS})
+
+target_link_libraries(signal_source_lib ${OPT_LIBRARIES})
+

src/algorithms/signal_source/libs/ad9361_manager.cc

@@ -0,0 +1,704 @@
+/*!
+ * \file ad9361_manager.cc
+ * \brief An Analog Devices AD9361 front-end configuration library wrapper for configure some functions via iiod link.
+ * \author Javier Arribas, jarribas(at)cttc.es
+ *
+ * This file contains information taken from librtlsdr:
+ *  http://git.osmocom.org/rtl-sdr/
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2018  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GNSS-SDR is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+#include "ad9361_manager.h"
+#include <glog/logging.h>
+#include <math.h>
+#include <iostream>
+#include <sstream>
+
+/* check return value of attr_write function */
+void errchk(int v, const char* what) {
+    if (v < 0)
+    {
+        LOG(WARNING)<<"Error "<<v<<" writing to channel "<<what<<" value may not be supported. ";
+    }
+}
+
+/* write attribute: long long int */
+void wr_ch_lli(struct iio_channel *chn, const char* what, long long val)
+{
+    errchk(iio_channel_attr_write_longlong(chn, what, val), what);
+}
+
+/* write attribute: string */
+void wr_ch_str(struct iio_channel *chn, const char* what, const char* str)
+{
+    errchk(iio_channel_attr_write(chn, what, str), what);
+}
+
+/* returns ad9361 phy device */
+struct iio_device* get_ad9361_phy(struct iio_context *ctx)
+{
+    struct iio_device *dev =  iio_context_find_device(ctx, "ad9361-phy");
+    return dev;
+}
+
+/* finds AD9361 streaming IIO devices */
+bool get_ad9361_stream_dev(struct iio_context *ctx, enum iodev d, struct iio_device **dev)
+{
+    switch (d) {
+        case TX: *dev = iio_context_find_device(ctx, "cf-ad9361-dds-core-lpc"); return *dev != NULL;
+        case RX: *dev = iio_context_find_device(ctx, "cf-ad9361-lpc");  return *dev != NULL;
+        default: return false;
+    }
+}
+
+/* finds AD9361 streaming IIO channels */
+bool get_ad9361_stream_ch(struct iio_context *ctx, enum iodev d, struct iio_device *dev, int chid, struct iio_channel **chn)
+{
+    std::stringstream name;
+    name.str("");
+    name<<"voltage";
+    name<<chid;
+    *chn = iio_device_find_channel(dev,name.str().c_str(), d == TX);
+    if (!*chn)
+    {
+        name.str("");
+        name<<"altvoltage";
+        name<<chid;
+        *chn = iio_device_find_channel(dev, name.str().c_str(), d == TX);
+    }
+    return *chn != NULL;
+}
+
+/* finds AD9361 phy IIO configuration channel with id chid */
+bool get_phy_chan(struct iio_context *ctx, enum iodev d, int chid, struct iio_channel **chn)
+{
+    std::stringstream name;
+    switch (d) {
+        case RX:
+            name.str("");
+            name<<"voltage";
+            name<<chid;
+            *chn = iio_device_find_channel(get_ad9361_phy(ctx),name.str().c_str() , false);
+            return *chn != NULL;
+            break;
+        case TX:
+            name.str("");
+            name<<"voltage";
+            name<<chid;
+            *chn = iio_device_find_channel(get_ad9361_phy(ctx), name.str().c_str(), true);
+            return *chn != NULL;
+            break;
+        default: return false;
+    }
+}
+
+/* finds AD9361 local oscillator IIO configuration channels */
+bool get_lo_chan(struct iio_context *ctx, enum iodev d, struct iio_channel **chn)
+{
+    switch (d) {
+        // LO chan is always output, i.e. true
+        case RX:
+            *chn = iio_device_find_channel(get_ad9361_phy(ctx), "altvoltage0", true);
+            return *chn != NULL;
+        case TX:
+            *chn = iio_device_find_channel(get_ad9361_phy(ctx), "altvoltage1" , true);
+            return *chn != NULL;
+        default:
+            return false;
+    }
+}
+
+
+/* applies streaming configuration through IIO */
+bool cfg_ad9361_streaming_ch(struct iio_context *ctx, struct stream_cfg *cfg, enum iodev type, int chid)
+{
+    struct iio_channel *chn = NULL;
+
+    // Configure phy and lo channels
+    //LOG(INFO)<<"* Acquiring AD9361 phy channel"<<chid;
+    std::cout<<"* Acquiring AD9361 phy channel"<<chid<<std::endl;
+    if (!get_phy_chan(ctx, type, chid, &chn)) { return false; }
+    wr_ch_str(chn, "rf_port_select",     cfg->rfport);
+    wr_ch_lli(chn, "rf_bandwidth",       cfg->bw_hz);
+    wr_ch_lli(chn, "sampling_frequency", cfg->fs_hz);
+
+    // Configure LO channel
+    //LOG(INFO)<<"* Acquiring AD9361 "<<type == TX ? "TX" : "RX";
+    std::cout<<"* Acquiring AD9361 "<<(type == TX ? "TX" : "RX")<<std::endl;
+    if (!get_lo_chan(ctx, type, &chn)) { return false; }
+    wr_ch_lli(chn, "frequency", cfg->lo_hz);
+    return true;
+}
+
+
+bool config_ad9361_rx_local(unsigned long bandwidth_,
+                            unsigned long sample_rate_,
+                            unsigned long freq_,
+                            std::string rf_port_select_,
+                            std::string gain_mode_rx1_,
+                            std::string gain_mode_rx2_,
+                            double rf_gain_rx1_,
+                            double rf_gain_rx2_)
+
+{
+    // RX stream config
+    // Stream configurations
+    struct stream_cfg rxcfg;
+    rxcfg.bw_hz = bandwidth_;   // 2 MHz rf bandwidth
+    rxcfg.fs_hz = sample_rate_;   // 2.5 MS/s rx sample rate
+    rxcfg.lo_hz = freq_; // 2.5 GHz rf frequency
+    rxcfg.rfport = rf_port_select_.c_str(); // port A (select for rf freq.)
+
+    std::cout<<"AD9361 Acquiring IIO LOCAL context\n";
+    struct iio_context *ctx;
+    // Streaming devices
+    struct iio_device *rx;
+    struct iio_channel *rx0_i;
+    struct iio_channel *rx0_q;
+
+    ctx = iio_create_default_context();
+    if (!ctx)
+    {
+        std::cout<<"No context\n";
+        throw std::runtime_error("AD9361 IIO No context");
+    }
+
+    if (iio_context_get_devices_count(ctx) <= 0)
+    {
+        std::cout<<"No devices\n";
+        throw std::runtime_error("AD9361 IIO No devices");
+    }
+
+    std::cout<<"* Acquiring AD9361 streaming devices\n";
+
+    if(!get_ad9361_stream_dev(ctx, RX, &rx))
+    {
+        std::cout<<"No rx dev found\n";
+        throw std::runtime_error("AD9361 IIO No rx dev found");
+    };
+
+    std::cout<<"* Configuring AD9361 for streaming\n";
+    if (!cfg_ad9361_streaming_ch(ctx, &rxcfg, RX, 0))
+    {
+        std::cout<<"RX port 0 not found\n";
+        throw std::runtime_error("AD9361 IIO RX port 0 not found");
+    }
+
+    std::cout<<"* Initializing AD9361 IIO streaming channels\n";
+    if (!get_ad9361_stream_ch(ctx, RX, rx, 0, &rx0_i))
+    {
+        std::cout<<"RX chan i not found\n";
+        throw std::runtime_error("RX chan i not found");
+    }
+
+    if (!get_ad9361_stream_ch(ctx, RX, rx, 1, &rx0_q))
+    {
+        std::cout<<"RX chan q not found\n";
+        throw std::runtime_error("RX chan q not found");
+    }
+
+    std::cout<<"* Enabling IIO streaming channels\n";
+    iio_channel_enable(rx0_i);
+    iio_channel_enable(rx0_q);
+
+    struct iio_device *ad9361_phy;
+    ad9361_phy= iio_context_find_device(ctx, "ad9361-phy");
+    int ret;
+    ret=iio_device_attr_write(ad9361_phy,"trx_rate_governor","nominal");
+    if (ret < 0) {
+        std::cout<<"Failed to set trx_rate_governor: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"ensm_mode","fdd");
+    if (ret < 0) {
+        std::cout<<"Failed to set ensm_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"calib_mode","auto");
+    if (ret < 0) {
+        std::cout<<"Failed to set calib_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"in_voltage0_gain_control_mode",gain_mode_rx1_.c_str());
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage0_gain_control_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"in_voltage1_gain_control_mode",gain_mode_rx2_.c_str());
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage1_gain_control_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write_double(ad9361_phy,"in_voltage0_hardwaregain",rf_gain_rx1_);
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage0_hardwaregain: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write_double(ad9361_phy,"in_voltage1_hardwaregain",rf_gain_rx2_);
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage1_hardwaregain: "<<ret<<std::endl;
+    }
+
+    std::cout<<"End of AD9361 RX configuration.\n";
+    iio_context_destroy(ctx);
+    return true;
+}
+
+bool config_ad9361_rx_remote(std::string remote_host,
+                             unsigned long bandwidth_,
+                             unsigned long sample_rate_,
+                             unsigned long freq_,
+                             std::string rf_port_select_,
+                             std::string gain_mode_rx1_,
+                             std::string gain_mode_rx2_,
+                             double rf_gain_rx1_,
+                             double rf_gain_rx2_)
+{
+    // RX stream config
+    // Stream configurations
+    struct stream_cfg rxcfg;
+    rxcfg.bw_hz = bandwidth_;   // 2 MHz rf bandwidth
+    rxcfg.fs_hz = sample_rate_;   // 2.5 MS/s rx sample rate
+    rxcfg.lo_hz = freq_; // 2.5 GHz rf frequency
+    rxcfg.rfport = rf_port_select_.c_str(); // port A (select for rf freq.)
+
+
+    std::cout<<"AD9361 Acquiring IIO REMOTE context in host "<<remote_host<<std::endl;
+    struct iio_context *ctx;
+    // Streaming devices
+    struct iio_device *rx;
+    struct iio_channel *rx0_i;
+    struct iio_channel *rx0_q;
+
+    ctx = iio_create_network_context(remote_host.c_str());
+    if (!ctx)
+    {
+        std::cout<<"No context\n";
+        throw std::runtime_error("AD9361 IIO No context");
+    }
+
+    if (iio_context_get_devices_count(ctx) <= 0)
+    {
+        std::cout<<"No devices\n";
+        throw std::runtime_error("AD9361 IIO No devices");
+    }
+
+    std::cout<<"* Acquiring AD9361 streaming devices\n";
+
+    if(!get_ad9361_stream_dev(ctx, RX, &rx))
+    {
+        std::cout<<"No rx dev found\n";
+        throw std::runtime_error("AD9361 IIO No rx dev found");
+    };
+
+    std::cout<<"* Configuring AD9361 for streaming\n";
+    if (!cfg_ad9361_streaming_ch(ctx, &rxcfg, RX, 0))
+    {
+        std::cout<<"RX port 0 not found\n";
+        throw std::runtime_error("AD9361 IIO RX port 0 not found");
+    }
+
+    std::cout<<"* Initializing AD9361 IIO streaming channels\n";
+    if (!get_ad9361_stream_ch(ctx, RX, rx, 0, &rx0_i))
+    {
+        std::cout<<"RX chan i not found\n";
+        throw std::runtime_error("RX chan i not found");
+    }
+
+    if (!get_ad9361_stream_ch(ctx, RX, rx, 1, &rx0_q))
+    {
+        std::cout<<"RX chan q not found\n";
+        throw std::runtime_error("RX chan q not found");
+    }
+
+    std::cout<<"* Enabling IIO streaming channels\n";
+    iio_channel_enable(rx0_i);
+    iio_channel_enable(rx0_q);
+
+    struct iio_device *ad9361_phy;
+    ad9361_phy= iio_context_find_device(ctx, "ad9361-phy");
+    int ret;
+    ret=iio_device_attr_write(ad9361_phy,"trx_rate_governor","nominal");
+    if (ret < 0) {
+        std::cout<<"Failed to set trx_rate_governor: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"ensm_mode","fdd");
+    if (ret < 0) {
+        std::cout<<"Failed to set ensm_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"calib_mode","auto");
+    if (ret < 0) {
+        std::cout<<"Failed to set calib_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"in_voltage0_gain_control_mode",gain_mode_rx1_.c_str());
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage0_gain_control_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write(ad9361_phy,"in_voltage1_gain_control_mode",gain_mode_rx2_.c_str());
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage1_gain_control_mode: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write_double(ad9361_phy,"in_voltage0_hardwaregain",rf_gain_rx1_);
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage0_hardwaregain: "<<ret<<std::endl;
+    }
+    ret=iio_device_attr_write_double(ad9361_phy,"in_voltage1_hardwaregain",rf_gain_rx2_);
+    if (ret < 0) {
+        std::cout<<"Failed to set in_voltage1_hardwaregain: "<<ret<<std::endl;
+    }
+
+    std::cout<<"End of AD9361 RX configuration.\n";
+
+    iio_context_destroy(ctx);
+    return true;
+}
+
+bool config_ad9361_lo_local(unsigned long bandwidth_,
+                            unsigned long sample_rate_,
+                            unsigned long freq_rf_tx_hz_,
+                            double tx_attenuation_db_,
+                            long long freq_dds_tx_hz_,
+                            double scale_dds_dbfs_)
+{
+
+    // TX stream config
+    std::cout<<"Start of AD9361 TX Local Oscillator DDS configuration\n";
+    struct stream_cfg txcfg;
+    txcfg.bw_hz = bandwidth_;
+    txcfg.fs_hz = sample_rate_;
+    txcfg.lo_hz = freq_rf_tx_hz_;
+    txcfg.rfport = "A";
+
+    std::cout<<"AD9361 Acquiring IIO LOCAL context\n";
+    struct iio_context *ctx;
+    ctx = iio_create_default_context();
+    if (!ctx)
+    {
+        std::cout<<"No context\n";
+        throw std::runtime_error("AD9361 IIO No context");
+    }
+
+    //find tx device
+    struct iio_device *tx;
+
+    std::cout<<"* Acquiring AD9361 TX streaming devices\n";
+
+    if(!get_ad9361_stream_dev(ctx, TX, &tx))
+    {
+        std::cout<<"No tx dev found\n";
+        throw std::runtime_error("AD9361 IIO No tx dev found");
+    };
+
+    std::cout<<"* Configuring AD9361 for streaming TX\n";
+    if (!cfg_ad9361_streaming_ch(ctx, &txcfg, TX, 0))
+    {
+        std::cout<<"TX port 0 not found\n";
+        throw std::runtime_error("AD9361 IIO TX port 0 not found");
+    }
+
+    //ENABLE DDS on TX1
+    struct iio_device *ad9361_phy;
+    ad9361_phy= iio_context_find_device(ctx, "ad9361-phy");
+    int ret;
+    //set output amplifier attenuation
+    ret = iio_device_attr_write_double(ad9361_phy, "out_voltage0_hardwaregain", -tx_attenuation_db_);
+    if (ret < 0) {
+        std::cout<<"Failed to set out_voltage0_hardwaregain value "<<-tx_attenuation_db_<<" error "<<ret<<std::endl;
+    }
+
+    struct iio_device *dds;
+    dds= iio_context_find_device(ctx, "cf-ad9361-dds-core-lpc");
+    struct iio_channel *dds_channel0_I;
+    dds_channel0_I = iio_device_find_channel(dds, "TX1_I_F1", true);
+
+    struct iio_channel *dds_channel0_Q;
+    dds_channel0_Q = iio_device_find_channel(dds, "TX1_Q_F1", true);
+
+    ret = iio_channel_attr_write_bool(dds_channel0_I, "raw", true);
+    if (ret < 0) {
+        std::cout<<"Failed to toggle DDS: "<<ret<<std::endl;
+    }
+
+    //set frequency, scale and phase
+
+    ret=iio_channel_attr_write_longlong(dds_channel0_I, "frequency",(long long) freq_dds_tx_hz_);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS frequency I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_longlong(dds_channel0_Q, "frequency",(long long) freq_dds_tx_hz_);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS frequency Q: "<<ret<<std::endl;
+    }
+
+
+    ret=iio_channel_attr_write_double(dds_channel0_I, "phase",0.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS phase I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_Q, "phase",270000.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS phase Q: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_I, "scale",pow(10, scale_dds_dbfs_ / 20.0));
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_Q, "scale",pow(10, scale_dds_dbfs_ / 20.0));
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale Q: "<<ret<<std::endl;
+    }
+
+    //disable TX2
+
+
+    ret = iio_device_attr_write_double(ad9361_phy, "out_voltage1_hardwaregain", -89.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set out_voltage1_hardwaregain value "<<-89.0<<" error "<<ret<<std::endl;
+    }
+
+    struct iio_channel *dds_channel1_I;
+    dds_channel1_I = iio_device_find_channel(dds, "TX2_I_F1", true);
+
+    struct iio_channel *dds_channel1_Q;
+    dds_channel1_Q = iio_device_find_channel(dds, "TX2_Q_F1", true);
+
+
+    ret=iio_channel_attr_write_double(dds_channel1_I, "scale",0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX2 DDS scale I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel1_Q, "scale",0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX2 DDS scale Q: "<<ret<<std::endl;
+    }
+
+    iio_context_destroy(ctx);
+    return true;
+}
+
+bool config_ad9361_lo_remote(std::string remote_host,
+                             unsigned long bandwidth_,
+                             unsigned long sample_rate_,
+                             unsigned long freq_rf_tx_hz_,
+                             double tx_attenuation_db_,
+                             long long freq_dds_tx_hz_,
+                             double scale_dds_dbfs_)
+{
+
+    // TX stream config
+    std::cout<<"Start of AD9361 TX Local Oscillator DDS configuration\n";
+    struct stream_cfg txcfg;
+    txcfg.bw_hz = bandwidth_;
+    txcfg.fs_hz = sample_rate_;
+    txcfg.lo_hz = freq_rf_tx_hz_;
+    txcfg.rfport = "A";
+
+    std::cout<<"AD9361 Acquiring IIO REMOTE context in host "<<remote_host<<std::endl;
+    struct iio_context *ctx;
+    ctx = iio_create_network_context(remote_host.c_str());
+    if (!ctx)
+    {
+        std::cout<<"No context\n";
+        throw std::runtime_error("AD9361 IIO No context");
+    }
+
+    //find tx device
+    struct iio_device *tx;
+
+    std::cout<<"* Acquiring AD9361 TX streaming devices\n";
+
+    if(!get_ad9361_stream_dev(ctx, TX, &tx))
+    {
+        std::cout<<"No tx dev found\n";
+        throw std::runtime_error("AD9361 IIO No tx dev found");
+    };
+
+    std::cout<<"* Configuring AD9361 for streaming TX\n";
+    if (!cfg_ad9361_streaming_ch(ctx, &txcfg, TX, 0))
+    {
+        std::cout<<"TX port 0 not found\n";
+        throw std::runtime_error("AD9361 IIO TX port 0 not found");
+    }
+
+    //ENABLE DDS on TX1
+    struct iio_device *ad9361_phy;
+    ad9361_phy= iio_context_find_device(ctx, "ad9361-phy");
+    int ret;
+    //set output amplifier attenuation
+    ret = iio_device_attr_write_double(ad9361_phy, "out_voltage0_hardwaregain", -tx_attenuation_db_);
+    if (ret < 0) {
+        std::cout<<"Failed to set out_voltage0_hardwaregain value "<<-tx_attenuation_db_<<" error "<<ret<<std::endl;
+    }
+
+    struct iio_device *dds;
+    dds= iio_context_find_device(ctx, "cf-ad9361-dds-core-lpc");
+    struct iio_channel *dds_channel0_I;
+    dds_channel0_I = iio_device_find_channel(dds, "TX1_I_F1", true);
+
+    struct iio_channel *dds_channel0_Q;
+    dds_channel0_Q = iio_device_find_channel(dds, "TX1_Q_F1", true);
+
+    ret = iio_channel_attr_write_bool(dds_channel0_I, "raw", true);
+    if (ret < 0) {
+        std::cout<<"Failed to toggle DDS: "<<ret<<std::endl;
+    }
+
+    //set frequency, scale and phase
+
+    ret=iio_channel_attr_write_longlong(dds_channel0_I, "frequency",(long long) freq_dds_tx_hz_);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS frequency I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_longlong(dds_channel0_Q, "frequency",(long long) freq_dds_tx_hz_);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS frequency Q: "<<ret<<std::endl;
+    }
+
+
+    ret=iio_channel_attr_write_double(dds_channel0_I, "phase",0.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS phase I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_Q, "phase",270000.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS phase Q: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_I, "scale",pow(10, scale_dds_dbfs_ / 20.0));
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_Q, "scale",pow(10, scale_dds_dbfs_ / 20.0));
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale Q: "<<ret<<std::endl;
+    }
+
+    //disable TX2
+
+
+    ret = iio_device_attr_write_double(ad9361_phy, "out_voltage1_hardwaregain", -89.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set out_voltage1_hardwaregain value "<<-89.0<<" error "<<ret<<std::endl;
+    }
+
+    struct iio_channel *dds_channel1_I;
+    dds_channel1_I = iio_device_find_channel(dds, "TX2_I_F1", true);
+
+    struct iio_channel *dds_channel1_Q;
+    dds_channel1_Q = iio_device_find_channel(dds, "TX2_Q_F1", true);
+
+
+    ret=iio_channel_attr_write_double(dds_channel1_I, "scale",0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX2 DDS scale I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel1_Q, "scale",0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX2 DDS scale Q: "<<ret<<std::endl;
+    }
+
+    iio_context_destroy(ctx);
+    return true;
+}
+
+
+bool ad9361_disable_lo_remote(std::string remote_host)
+{
+    std::cout<<"AD9361 Acquiring IIO REMOTE context in host "<<remote_host<<std::endl;
+    struct iio_context *ctx;
+    ctx = iio_create_network_context(remote_host.c_str());
+    if (!ctx)
+    {
+        std::cout<<"No context\n";
+        throw std::runtime_error("AD9361 IIO No context");
+    }
+    struct iio_device *dds;
+    dds= iio_context_find_device(ctx, "cf-ad9361-dds-core-lpc");
+    struct iio_channel *dds_channel0_I;
+    dds_channel0_I = iio_device_find_channel(dds, "TX1_I_F1", true);
+
+    struct iio_channel *dds_channel0_Q;
+    dds_channel0_Q = iio_device_find_channel(dds, "TX1_Q_F1", true);
+    int ret;
+    ret = iio_channel_attr_write_bool(dds_channel0_I, "raw", false);
+    if (ret < 0) {
+        std::cout<<"Failed to toggle DDS: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_I, "scale",0.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_Q, "scale",0.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale Q: "<<ret<<std::endl;
+    }
+
+    iio_context_destroy(ctx);
+
+    return true;
+}
+
+bool ad9361_disable_lo_local()
+{
+    std::cout<<"AD9361 Acquiring IIO LOCAL context"<<std::endl;
+    struct iio_context *ctx;
+    ctx = iio_create_default_context();
+    if (!ctx)
+    {
+        std::cout<<"No context\n";
+        throw std::runtime_error("AD9361 IIO No context");
+    }
+    struct iio_device *dds;
+    dds= iio_context_find_device(ctx, "cf-ad9361-dds-core-lpc");
+    struct iio_channel *dds_channel0_I;
+    dds_channel0_I = iio_device_find_channel(dds, "TX1_I_F1", true);
+
+    struct iio_channel *dds_channel0_Q;
+    dds_channel0_Q = iio_device_find_channel(dds, "TX1_Q_F1", true);
+    int ret;
+    ret = iio_channel_attr_write_bool(dds_channel0_I, "raw", false);
+    if (ret < 0) {
+        std::cout<<"Failed to toggle DDS: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_I, "scale",0.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale I: "<<ret<<std::endl;
+    }
+
+    ret=iio_channel_attr_write_double(dds_channel0_Q, "scale",0.0);
+    if (ret < 0) {
+        std::cout<<"Failed to set TX DDS scale Q: "<<ret<<std::endl;
+    }
+
+    iio_context_destroy(ctx);
+
+    return true;
+}
+

src/algorithms/signal_source/libs/ad9361_manager.h

@@ -0,0 +1,127 @@
+/*!
+ * \file ad9361_manager.h
+ * \brief An Analog Devices AD9361 front-end configuration library wrapper for configure some functions via iiod link.
+ * \author Javier Arribas, jarribas(at)cttc.es
+ *
+ * This file contains information taken from librtlsdr:
+ *  http://git.osmocom.org/rtl-sdr/
+ * -------------------------------------------------------------------------
+ *
+ * Copyright (C) 2010-2018  (see AUTHORS file for a list of contributors)
+ *
+ * GNSS-SDR is a software defined Global Navigation
+ *          Satellite Systems receiver
+ *
+ * This file is part of GNSS-SDR.
+ *
+ * GNSS-SDR is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * GNSS-SDR is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with GNSS-SDR. If not, see <http://www.gnu.org/licenses/>.
+ *
+ * -------------------------------------------------------------------------
+ */
+
+#ifndef __AD9361_MANAGER__
+#define __AD9361_MANAGER__
+
+#include <string>
+
+#ifdef __APPLE__
+#include <iio/iio.h>
+#else
+#include <iio.h>
+#endif
+
+/* RX is input, TX is output */
+enum iodev { RX, TX };
+
+/* common RX and TX streaming params */
+struct stream_cfg {
+    long long bw_hz; // Analog banwidth in Hz
+    long long fs_hz; // Baseband sample rate in Hz
+    long long lo_hz; // Local oscillator frequency in Hz
+    const char* rfport; // Port name
+};
+
+
+/* check return value of attr_write function */
+void errchk(int v, const char* what);
+
+/* write attribute: long long int */
+void wr_ch_lli(struct iio_channel *chn, const char* what, long long val);
+
+/* write attribute: string */
+void wr_ch_str(struct iio_channel *chn, const char* what, const char* str);
+
+/* helper function generating channel names */
+char* get_ch_name(const char* type, int id, char* tmpstr);
+
+/* returns ad9361 phy device */
+struct iio_device* get_ad9361_phy(struct iio_context *ctx);
+
+/* finds AD9361 streaming IIO devices */
+bool get_ad9361_stream_dev(struct iio_context *ctx, enum iodev d, struct iio_device **dev);
+
+/* finds AD9361 streaming IIO channels */
+bool get_ad9361_stream_ch(struct iio_context *ctx, enum iodev d, struct iio_device *dev, int chid, struct iio_channel **chn);
+
+/* finds AD9361 phy IIO configuration channel with id chid */
+bool get_phy_chan(struct iio_context *ctx, enum iodev d, int chid, struct iio_channel **chn);
+
+/* finds AD9361 local oscillator IIO configuration channels */
+bool get_lo_chan(struct iio_context *ctx, enum iodev d, struct iio_channel **chn);
+
+/* applies streaming configuration through IIO */
+bool cfg_ad9361_streaming_ch(struct iio_context *ctx, struct stream_cfg *cfg, enum iodev type, int chid);
+
+
+bool config_ad9361_rx_local(unsigned long bandwidth_,
+                            unsigned long sample_rate_,
+                            unsigned long freq_,
+                            std::string rf_port_select_,
+                            std::string gain_mode_rx1_,
+                            std::string gain_mode_rx2_,
+                            double rf_gain_rx1_,
+                            double rf_gain_rx2_);
+
+bool config_ad9361_rx_remote(std::string remote_host,
+        unsigned long bandwidth_,
+        unsigned long sample_rate_,
+        unsigned long freq_,
+        std::string rf_port_select_,
+        std::string gain_mode_rx1_,
+        std::string gain_mode_rx2_,
+        double rf_gain_rx1_,
+        double rf_gain_rx2_);
+
+bool config_ad9361_lo_local(unsigned long bandwidth_,
+                            unsigned long sample_rate_,
+                            unsigned long freq_rf_tx_hz_,
+                            double tx_attenuation_db_,
+                            long long freq_dds_tx_hz_,
+                            double scale_dds_dbfs_);
+
+bool config_ad9361_lo_remote(std::string remote_host,
+                             unsigned long bandwidth_,
+                             unsigned long sample_rate_,
+                             unsigned long freq_rf_tx_hz_,
+                             double tx_attenuation_db_,
+                             long long freq_dds_tx_hz_,
+                             double scale_dds_dbfs_);
+
+
+bool ad9361_disable_lo_remote(std::string remote_host);
+
+bool ad9361_disable_lo_local();
+
+
+#endif