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

765 lines
24 KiB
C++

/*!
* \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 <https://www.gnu.org/licenses/>.
*
* -------------------------------------------------------------------------
*/
#include "ad9361_manager.h"
#include <glog/logging.h>
#include <cmath>
#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: 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_)
{
// 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(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_)
{
// 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(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_)
{
// 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", 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", 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(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_)
{
// 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", 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", 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(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;
}