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gnss-sdr/src/algorithms/signal_source/libs/ad9361_manager.cc

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/*!
* \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) 2010-2019 (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 <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include "ad9361_manager.h"
#include <glog/logging.h>
#include <ad9361.h>
#include <cmath>
#include <fstream> // for ifstream
#include <iostream>
#include <sstream>
#include <vector>
/* 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: int64_t int */
void wr_ch_lli(struct iio_channel *chn, const char *what, int64_t 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 != nullptr;
case RX:
*dev = iio_context_find_device(ctx, "cf-ad9361-lpc");
return *dev != nullptr;
default:
return false;
}
}
/* finds AD9361 streaming IIO channels */
bool get_ad9361_stream_ch(struct iio_context *ctx __attribute__((unused)), 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 != nullptr;
}
/* 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 != nullptr;
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 != nullptr;
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 != nullptr;
case TX:
*chn = iio_device_find_channel(get_ad9361_phy(ctx), "altvoltage1", true);
return *chn != nullptr;
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 = nullptr;
// 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(uint64_t bandwidth_,
uint64_t sample_rate_,
uint64_t freq_,
const std::string &rf_port_select_,
const std::string &gain_mode_rx1_,
const std::string &gain_mode_rx2_,
double rf_gain_rx1_,
double rf_gain_rx2_,
bool quadrature_,
bool rfdc_,
bool bbdc_)
{
// RX stream config
// Stream configurations
struct stream_cfg rxcfg;
rxcfg.bw_hz = bandwidth_;
rxcfg.fs_hz = sample_rate_;
rxcfg.lo_hz = freq_;
rxcfg.rfport = rf_port_select_.c_str();
std::cout << "AD9361 Acquiring IIO LOCAL context\n";
struct iio_context *ctx;
// Streaming devices
struct iio_device *rx;
struct iio_channel *rx_chan1;
struct iio_channel *rx_chan2;
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, &rx_chan1))
{
std::cout << "RX channel 1 not found\n";
throw std::runtime_error("RX channel 1 not found");
}
if (!get_ad9361_stream_ch(ctx, RX, rx, 1, &rx_chan2))
{
std::cout << "RX channel 2 not found\n";
throw std::runtime_error("RX channel 2 not found");
}
std::cout << "* Enabling IIO streaming channels\n";
iio_channel_enable(rx_chan1);
iio_channel_enable(rx_chan2);
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_bool(ad9361_phy, "in_voltage_quadrature_tracking_en", quadrature_);
if (ret < 0)
{
std::cout << "Failed to set in_voltage_quadrature_tracking_en: " << ret << std::endl;
}
ret = iio_device_attr_write_bool(ad9361_phy, "in_voltage_rf_dc_offset_tracking_en", rfdc_);
if (ret < 0)
{
std::cout << "Failed to set in_voltage_rf_dc_offset_tracking_en: " << ret << std::endl;
}
ret = iio_device_attr_write_bool(ad9361_phy, "in_voltage_bb_dc_offset_tracking_en", bbdc_);
if (ret < 0)
{
std::cout << "Failed to set in_voltage_bb_dc_offset_tracking_en: " << 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(const std::string &remote_host,
uint64_t bandwidth_,
uint64_t sample_rate_,
uint64_t freq_,
const std::string &rf_port_select_,
const std::string &gain_mode_rx1_,
const std::string &gain_mode_rx2_,
double rf_gain_rx1_,
double rf_gain_rx2_,
bool quadrature_,
bool rfdc_,
bool bbdc_)
{
std::string filter_source_("Off");
float Fpass_ = 0.0, Fstop_ = 0.0;
std::string filter_filename_;
// RX stream config
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 *rx_chan1;
struct iio_channel *rx_chan2;
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";
struct iio_device *ad9361_phy;
ad9361_phy = iio_context_find_device(ctx, "ad9361-phy");
int ret;
std::cout << "* Initializing AD9361 IIO streaming channels\n";
if (!get_ad9361_stream_ch(ctx, RX, rx, 0, &rx_chan1))
{
std::cout << "RX channel 1 not found\n";
throw std::runtime_error("RX channel 1 not found");
}
if (!get_ad9361_stream_ch(ctx, RX, rx, 1, &rx_chan2))
{
std::cout << "RX channel 2 not found\n";
throw std::runtime_error("RX channel 2 not found");
}
if (filter_source_ == "Off")
{
struct stream_cfg rxcfg;
rxcfg.bw_hz = bandwidth_;
rxcfg.fs_hz = sample_rate_;
rxcfg.lo_hz = freq_;
rxcfg.rfport = rf_port_select_.c_str();
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");
}
}
else if (filter_source_ == "Auto")
{
ret = ad9361_set_bb_rate(ad9361_phy, sample_rate_);
if (ret)
{
throw std::runtime_error("Unable to set BB rate");
// set bw
//params.push_back("in_voltage_rf_bandwidth=" + boost::to_string(bandwidth));
}
//wr_ch_str(rx_chan1, "rf_port_select", rf_port_select_.c_str());
ret = iio_device_attr_write(ad9361_phy, "in_voltage0_rf_port_select", rf_port_select_.c_str());
if (ret)
{
throw std::runtime_error("Unable to set rf_port_select");
}
wr_ch_lli(rx_chan1, "rf_bandwidth", bandwidth_);
if (!get_lo_chan(ctx, RX, &rx_chan1))
{
return false;
}
wr_ch_lli(rx_chan1, "frequency", freq_);
}
else if (filter_source_ == "File")
{
try
{
if (!load_fir_filter(filter_filename_, ad9361_phy))
{
throw std::runtime_error("Unable to load filter file");
}
}
catch (const std::runtime_error &e)
{
std::cout << "Exception cached when configuring the RX FIR filter: " << e.what() << std::endl;
}
ret = iio_device_attr_write(ad9361_phy, "in_voltage0_rf_port_select", rf_port_select_.c_str());
if (ret)
{
throw std::runtime_error("Unable to set rf_port_select");
}
wr_ch_lli(rx_chan1, "rf_bandwidth", bandwidth_);
if (!get_lo_chan(ctx, RX, &rx_chan1))
{
return false;
}
wr_ch_lli(rx_chan1, "frequency", freq_);
}
else if (filter_source_ == "Design")
{
ret = ad9361_set_bb_rate_custom_filter_manual(
ad9361_phy, sample_rate_, static_cast<uint64_t>(Fpass_), static_cast<uint64_t>(Fstop_), bandwidth_, bandwidth_);
if (ret)
{
throw std::runtime_error("Unable to set BB rate");
}
ret = iio_device_attr_write(ad9361_phy, "in_voltage0_rf_port_select", rf_port_select_.c_str());
if (ret)
{
throw std::runtime_error("Unable to set rf_port_select");
}
wr_ch_lli(rx_chan1, "rf_bandwidth", bandwidth_);
if (!get_lo_chan(ctx, RX, &rx_chan1))
{
return false;
}
wr_ch_lli(rx_chan1, "frequency", freq_);
}
else
{
throw std::runtime_error("Unknown filter configuration");
}
// Filters can only be disabled after the sample rate has been set
if (filter_source_ == "Off")
{
ret = ad9361_set_trx_fir_enable(ad9361_phy, false);
if (ret)
{
throw std::runtime_error("Unable to disable filters");
}
}
std::cout << "* Enabling IIO streaming channels\n";
iio_channel_enable(rx_chan1);
iio_channel_enable(rx_chan2);
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_bool(ad9361_phy, "in_voltage_quadrature_tracking_en", quadrature_);
if (ret < 0)
{
std::cout << "Failed to set in_voltage_quadrature_tracking_en: " << ret << std::endl;
}
ret = iio_device_attr_write_bool(ad9361_phy, "in_voltage_rf_dc_offset_tracking_en", rfdc_);
if (ret < 0)
{
std::cout << "Failed to set in_voltage_rf_dc_offset_tracking_en: " << ret << std::endl;
}
ret = iio_device_attr_write_bool(ad9361_phy, "in_voltage_bb_dc_offset_tracking_en", bbdc_);
if (ret < 0)
{
std::cout << "Failed to set in_voltage_bb_dc_offset_tracking_en: " << 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;
}
if (gain_mode_rx1_ == "manual")
{
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;
}
}
if (gain_mode_rx2_ == "manual")
{
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(uint64_t bandwidth_,
uint64_t sample_rate_,
uint64_t freq_rf_tx_hz_,
double tx_attenuation_db_,
int64_t freq_dds_tx_hz_,
double scale_dds_dbfs_,
double phase_dds_deg_)
{
// 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", -std::abs(tx_attenuation_db_));
if (ret < 0)
{
std::cout << "Failed to set out_voltage0_hardwaregain value " << -std::abs(tx_attenuation_db_) << ". Error " << ret << std::endl;
}
// shut down signal in TX2
ret = iio_device_attr_write_double(ad9361_phy, "out_voltage1_hardwaregain", -89.75);
if (ret < 0)
{
std::cout << "Failed to set out_voltage1_hardwaregain value -89.75 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", static_cast<int64_t>(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", static_cast<int64_t>(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", phase_dds_deg_ * 1000.0);
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", phase_dds_deg_ * 1000.0 + 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(const std::string &remote_host,
uint64_t bandwidth_,
uint64_t sample_rate_,
uint64_t freq_rf_tx_hz_,
double tx_attenuation_db_,
int64_t freq_dds_tx_hz_,
double scale_dds_dbfs_,
double phase_dds_deg_)
{
// 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", -std::abs(tx_attenuation_db_));
if (ret < 0)
{
std::cout << "Failed to set out_voltage0_hardwaregain value " << -std::abs(tx_attenuation_db_) << ". Error " << ret << std::endl;
}
// shut down signal in TX2
ret = iio_device_attr_write_double(ad9361_phy, "out_voltage1_hardwaregain", -89.75);
if (ret < 0)
{
std::cout << "Failed to set out_voltage1_hardwaregain value -89.75 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", static_cast<int64_t>(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", static_cast<int64_t>(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", phase_dds_deg_ * 1000.0);
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", phase_dds_deg_ * 1000.0 + 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(const 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;
}
bool load_fir_filter(
std::string &filter, struct iio_device *phy)
{
if (filter.empty() || !iio_device_find_attr(phy, "filter_fir_config"))
{
return false;
}
std::ifstream ifs(filter.c_str(), std::ifstream::binary);
if (!ifs)
{
return false;
}
// Here, we verify that the filter file contains data for both RX+TX.
{
char buf[256];
do
{
ifs.getline(buf, sizeof(buf));
}
while (!(buf[0] == '-' || (buf[0] >= '0' && buf[0] <= '9')));
std::string line(buf);
if (line.find(',') == std::string::npos)
throw std::runtime_error("Incompatible filter file");
}
ifs.seekg(0, ifs.end);
int length = ifs.tellg();
ifs.seekg(0, ifs.beg);
std::vector<char> buffer(length);
ifs.read(buffer.data(), length);
ifs.close();
int ret = iio_device_attr_write_raw(phy,
"filter_fir_config", buffer.data(), length);
return ret > 0;
}
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