int uhd_device::set_rates(double tx_rate, double rx_rate)
{
double offset_limit = 1.0;
double tx_offset, rx_offset;
// B2XX is the only device where we set FPGA clocking
if (dev_type == B2XX) {
if (set_master_clk(B2XX_CLK_RT) < 0)
return -1;
}
// Set sample rates
try {
usrp_dev->set_tx_rate(tx_rate);
usrp_dev->set_rx_rate(rx_rate);
} catch (const std::exception &ex) {
LOG(ALERT) << "UHD rate setting failed";
LOG(ALERT) << ex.what();
return -1;
}
this->tx_rate = usrp_dev->get_tx_rate();
this->rx_rate = usrp_dev->get_rx_rate();
tx_offset = fabs(this->tx_rate - tx_rate);
rx_offset = fabs(this->rx_rate - rx_rate);
if ((tx_offset > offset_limit) || (rx_offset > offset_limit)) {
LOG(ALERT) << "Actual sample rate differs from desired rate";
LOG(ALERT) << "Tx/Rx (" << this->tx_rate << "/"
<< this->rx_rate << ")";
return -1;
}
return 0;
}
/***********************************************************************
* Transmit thread
**********************************************************************/
static void tx_thread(uhd::usrp::multi_usrp::sptr usrp, const double tx_wave_freq, const double tx_wave_ampl)
{
uhd::set_thread_priority_safe();
// set max TX gain
usrp->set_tx_gain(usrp->get_tx_gain_range().stop());
//create a transmit streamer
uhd::stream_args_t stream_args("fc32"); //complex floats
uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
//setup variables and allocate buffer
uhd::tx_metadata_t md;
md.has_time_spec = false;
std::vector<samp_type> buff(tx_stream->get_max_num_samps()*10);
//values for the wave table lookup
size_t index = 0;
const double tx_rate = usrp->get_tx_rate();
const size_t step = boost::math::iround(wave_table_len * tx_wave_freq / tx_rate);
wave_table table(tx_wave_ampl);
//fill buff and send until interrupted
while (not boost::this_thread::interruption_requested())
{
for (size_t i = 0; i < buff.size(); i++)
buff[i] = table(index += step);
tx_stream->send(&buff.front(), buff.size(), md);
}
//send a mini EOB packet
md.end_of_burst = true;
tx_stream->send("", 0, md);
}
/***********************************************************************
* TX Hammer
**********************************************************************/
void tx_hammer(uhd::usrp::multi_usrp::sptr usrp, const std::string &tx_cpu, uhd::tx_streamer::sptr tx_stream){
uhd::set_thread_priority_safe();
uhd::tx_metadata_t md;
const size_t max_samps_per_packet = tx_stream->get_max_num_samps();
std::vector<char> buff(max_samps_per_packet*uhd::convert::get_bytes_per_item(tx_cpu));
std::vector<void *> buffs;
for (size_t ch = 0; ch < tx_stream->get_num_channels(); ch++)
buffs.push_back(&buff.front()); //same buffer for each channel
//print pre-test summary
std::cout << boost::format(
"Testing transmit rate %f Msps"
) % (usrp->get_tx_rate()/1e6) << std::endl;
//setup variables and allocate buffer
std::srand( time(NULL) );
while(not boost::this_thread::interruption_requested()){
size_t total_num_samps = rand() % 100000;
size_t num_acc_samps = 0;
float timeout = 1;
usrp->set_time_now(uhd::time_spec_t(0.0));
while(num_acc_samps < total_num_samps){
//send a single packet
num_tx_samps += tx_stream->send(buffs, max_samps_per_packet, md, timeout);
num_acc_samps += std::min(total_num_samps-num_acc_samps, tx_stream->get_max_num_samps());
}
//send a mini EOB packet
md.end_of_burst = true;
tx_stream->send("", 0, md);
}
}
/***********************************************************************
* Benchmark TX Rate
**********************************************************************/
void benchmark_tx_rate(
uhd::usrp::multi_usrp::sptr usrp,
const std::string &tx_cpu,
uhd::tx_streamer::sptr tx_stream,
std::atomic<bool>& burst_timer_elapsed,
const boost::posix_time::ptime &start_time,
bool random_nsamps=false
) {
uhd::set_thread_priority_safe();
//print pre-test summary
std::cout << boost::format(
"[%s] Testing transmit rate %f Msps on %u channels"
) % NOW() % (usrp->get_tx_rate()/1e6) % tx_stream->get_num_channels() << std::endl;
//setup variables and allocate buffer
uhd::tx_metadata_t md;
md.time_spec = usrp->get_time_now() + uhd::time_spec_t(INIT_DELAY);
md.has_time_spec = (tx_stream->get_num_channels() > 1);
const size_t max_samps_per_packet = tx_stream->get_max_num_samps();
std::vector<char> buff(max_samps_per_packet*uhd::convert::get_bytes_per_item(tx_cpu));
std::vector<const void *> buffs;
for (size_t ch = 0; ch < tx_stream->get_num_channels(); ch++)
buffs.push_back(&buff.front()); //same buffer for each channel
md.has_time_spec = (buffs.size() != 1);
if (random_nsamps) {
std::srand((unsigned int)time(NULL));
while (not burst_timer_elapsed) {
size_t total_num_samps = rand() % max_samps_per_packet;
size_t num_acc_samps = 0;
const float timeout = 1;
usrp->set_time_now(uhd::time_spec_t(0.0));
while(num_acc_samps < total_num_samps){
//send a single packet
num_tx_samps += tx_stream->send(buffs, max_samps_per_packet, md, timeout)*tx_stream->get_num_channels();
num_acc_samps += std::min(total_num_samps-num_acc_samps, tx_stream->get_max_num_samps());
}
}
} else {
while (not burst_timer_elapsed) {
const size_t num_tx_samps_sent_now = tx_stream->send(buffs, max_samps_per_packet, md)*tx_stream->get_num_channels();
num_tx_samps += num_tx_samps_sent_now;
if (num_tx_samps_sent_now == 0) {
num_timeouts_tx++;
if ((num_timeouts_tx % 10000) == 1) {
std::cerr << "[" << NOW() << "] Tx timeouts: " << num_timeouts_tx << std::endl;
}
}
md.has_time_spec = false;
}
}
//send a mini EOB packet
md.end_of_burst = true;
tx_stream->send(buffs, 0, md);
}
double uhd_device::set_rates(double rate)
{
double actual_rt, actual_clk_rt;
#if !defined(MULTICHAN) & !defined(RESAMPLE)
// Make sure we can set the master clock rate on this device
actual_clk_rt = usrp_dev->get_master_clock_rate();
if (actual_clk_rt > U1_DEFAULT_CLK_RT) {
LOG(ALERT) << "Cannot set clock rate on this device";
LOG(ALERT) << "Please compile with host resampling support";
return -1.0;
}
// Set master clock rate
usrp_dev->set_master_clock_rate(master_clk_rt);
actual_clk_rt = usrp_dev->get_master_clock_rate();
if (actual_clk_rt != master_clk_rt) {
LOG(ALERT) << "Failed to set master clock rate";
LOG(ALERT) << "Actual clock rate " << actual_clk_rt;
return -1.0;
}
#endif
// Set sample rates
usrp_dev->set_tx_rate(rate);
usrp_dev->set_rx_rate(rate);
actual_rt = usrp_dev->get_tx_rate();
if (actual_rt != rate) {
LOG(ALERT) << "Actual sample rate differs from desired rate";
LOG(ALERT) << actual_rt << "Hz";
return -1.0;
}
if (usrp_dev->get_rx_rate() != actual_rt) {
LOG(ALERT) << "Transmit and receive sample rates do not match";
return -1.0;
}
return actual_rt;
}
/***********************************************************************
* TX Hammer
**********************************************************************/
void tx_hammer(uhd::usrp::multi_usrp::sptr usrp, const std::string &tx_cpu, const std::string &tx_otw){
uhd::set_thread_priority_safe();
//create a transmit streamer
uhd::stream_args_t stream_args(tx_cpu, tx_otw);
for (size_t ch = 0; ch < usrp->get_num_mboards(); ch++) //linear channel mapping
stream_args.channels.push_back(ch);
uhd::tx_streamer::sptr tx_stream = usrp->get_tx_stream(stream_args);
uhd::tx_metadata_t md;
std::vector<std::complex<float> > buff(10000);
//print pre-test summary
std::cout << boost::format(
"Testing transmit rate %f Msps"
) % (usrp->get_tx_rate()/1e6) << std::endl;
//setup variables and allocate buffer
std::srand( time(NULL) );
while(not boost::this_thread::interruption_requested()){
size_t total_num_samps = rand() % 100000;
size_t num_acc_samps = 0;
float timeout = 1;
usrp->set_time_now(uhd::time_spec_t(0.0));
while(num_acc_samps < total_num_samps){
//send a single packet
num_tx_samps += tx_stream->send(&buff, tx_stream->get_max_num_samps(), md, timeout);
num_acc_samps += std::min(total_num_samps-num_acc_samps, tx_stream->get_max_num_samps());
}
//send a mini EOB packet
md.end_of_burst = true;
tx_stream->send("", 0, md);
}
}
void get_tx_parameters(uhd::usrp::multi_usrp::sptr usrp, size_t mboard, std::ostream & os)
{
using namespace std;
namespace radio = uhd::usrp;
size_t nchan = 0;
// CONFIGURATION SUB_DEVICE
os << std::endl << "********** TX Sub Device ***********" << std::endl;
// Get sub device specification
os << std::endl << "-----> Get TX Subdevice" << std::endl;
try
{
os << "TX Subdevice Specification: ";
radio::subdev_spec_t tx_subdev = usrp->get_tx_subdev_spec(mboard);
os << tx_subdev.to_pp_string() << endl;
}
catch(uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// Number of tx channels
os << std::endl << "-----> Get number of TX channels" << std::endl;
try
{
size_t num_tx = usrp->get_tx_num_channels();
os << "Number of TX channels: " ;
os << num_tx << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// TX Device Name
os << std::endl << "-----> Get TX Subdevice Name" << std::endl;
try
{
os << "TX Subdevice Name: ";
string tx_name = usrp->get_tx_subdev_name(nchan);
os << tx_name << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// TX SAMPLE RATE
os << std::endl << "********** TX Sample Rate ***********" << std::endl;
// Get Current TX rate
os << std::endl << "-----> Get TX Rate" << std::endl;
try
{
os << "TX Rate: " ;
double tx_rate = usrp->get_tx_rate(nchan);
os << tx_rate << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// Get list of TX rates
os << std::endl << "-----> Get TX Rate List" << std::endl;
try
{
os << "TX Rate List: " ;
uhd::meta_range_t tx_rates = usrp->get_tx_rates(nchan);
os << "Start: " << tx_rates.start() << " Stop: " << tx_rates.stop() << " Step: " << tx_rates.step() << endl;
os << tx_rates.to_pp_string() << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// TX FREQUENCIES
os << std::endl << "********** TX Frequencies ***********" << std::endl;
// Current TX frequency
os << std::endl << "-----> Get TX Center Frequency" << std::endl;
try
{
os << "TX Freq: ";
double tx_freq = usrp->get_tx_freq(nchan);
os << tx_freq << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// TX Frequency Range
os << std::endl << "-----> Get TX Center Frequency Range" << std::endl;
try
{
os << "TX Frequency Range: ";
uhd::freq_range_t tx_freq_range = usrp->get_tx_freq_range(nchan);
os << "Start: " << tx_freq_range.start() << " Stop: " << tx_freq_range.stop() << " Step: " << tx_freq_range.step() << endl;
os << tx_freq_range.to_pp_string() << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// Front end TX frequency range
os << std::endl << "-----> Get TX RF Front End Center Frequency Range" << std::endl;
try
{
os << "TX Front End Frequency Range: ";
uhd::freq_range_t tx_fe_freq_range = usrp->get_fe_tx_freq_range(nchan);
os << "Start: " << tx_fe_freq_range.start() << " Stop: " << tx_fe_freq_range.stop() << " Step: " << tx_fe_freq_range.step() << endl;
os << tx_fe_freq_range.to_pp_string() << endl;
}
catch (uhd::runtime_error &e)
{
os << " Exception occurred : " << e.code() << endl;
}
// TX GAIN
os << std::endl << "********** TX Gain ***********" << std::endl;
// Total combined gain
os << endl << "-----> Get TX Total Gain" << endl;
os << "TX Total Gain: " ;
try
{
double tx_total_gain = usrp->get_tx_gain(nchan);
os << tx_total_gain << endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code: " << e.code() << endl;
}
// List of all gain elements
os << std::endl << "-----> Get TX gain names" << std::endl;
std::vector<std::string> tx_gain_names = usrp->get_tx_gain_names(nchan);
os << "Tx Gain Names: " << std::endl;
for (int index =0; index < tx_gain_names.size(); index++)
{
// Name
os << "\t" << tx_gain_names[index] << endl;
}
for (int index =0; index < tx_gain_names.size(); index++)
{
// Name
os << "\t" << "Name: " << tx_gain_names[index] << " Value: ";
// Value
try
{
double element_gain = usrp->get_tx_gain(tx_gain_names[index], nchan);
os << element_gain << endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code while getting value: " << e.code() << endl;
}
}
// Gain ranges for each of the gain elements
os << std::endl << "-----> Get TX element gain ranges" << std::endl;
for (int index =0; index < tx_gain_names.size(); index++)
{
// Name
os << "\t" << "Name: " << tx_gain_names[index] << " Value: ";
// Value
try
{
uhd::gain_range_t element_gain_range = usrp->get_tx_gain_range(tx_gain_names[index], nchan);
os << "Start: " << element_gain_range.start() << " End: " << element_gain_range.stop() << " Step: " << element_gain_range.step() << endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code while getting value: " << e.code() << endl;
}
}
// Total Gain range
try
{
os << endl << "-----> Get TX Total Gain Range" << endl;
uhd::gain_range_t tx_total_gain_range = usrp->get_tx_gain_range(nchan);
os << "TX Total Gain Range: " ;
os << "Start: " << tx_total_gain_range.start() << " End: " << tx_total_gain_range.stop() << " Step: " << tx_total_gain_range.step() << endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code: " << e.code() <<endl;
}
// ANTENNA FUNCTIONS
os << std::endl << "********** TX ANTENNA ***********" << std::endl;
// Current Tx Antenna
os << std::endl << "-----> Get TX Antenna" << std::endl;
try
{
os << "TX Antenna: " ;
string tx_antenna = usrp->get_tx_antenna(nchan);
os << tx_antenna << endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code: " << e.code() <<endl;
}
// TX Antenna choices
os << std::endl << "-----> Get Tx Antenna List" << std::endl;
try
{
os << "TX Antennas : " << std::endl;
std::vector<std::string> tx_antennas = usrp->get_tx_antennas(nchan);
for (int index =0; index < tx_antennas.size(); index++)
os << "\t" << tx_antennas[index] << std::endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code: " << e.code() <<endl;
}
// TX BANDWIDTH FUNCTIONS
os << std::endl << "********** TX BANDWIDTH ***********" << std::endl;
// Current TX Bandwidth
os << endl << "-----> Get TX Bandwidth" << endl;
try
{
os << "TX Bandwidth " ;
double tx_bandwidth = usrp->get_tx_bandwidth(nchan);
os << tx_bandwidth << endl;
}
catch (uhd::runtime_error &e)
{
os << "Exception occured " << e.code() << endl;
}
// TX Bandwidth Range
os << endl << "-----> Get TX Bandwidth Range" << endl;
try
{
os << "TX Bandwidth Range: " ;
uhd::gain_range_t tx_bandwidth_range = usrp->get_tx_bandwidth_range(nchan);
os << "Start: " << tx_bandwidth_range .start() << " End: " << tx_bandwidth_range .stop() << " Step: " << tx_bandwidth_range .step() << endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception code: " << e.code() <<endl;
}
// TX DBOARD INTERFACE OBJECT
os << std::endl << "********** TX DBOARD INTERFACE ***********" << std::endl;
// TX Dboard Interface
os << endl << "-----> Get tx_dboard_iface()" << endl;
try
{
os << "TX Dboard Interface " ;
uhd::usrp::dboard_iface::sptr tx_dboard_iface = usrp->get_tx_dboard_iface(nchan);
os << tx_dboard_iface << endl;
}
catch (uhd::runtime_error &e)
{
os << "Exception occured " << e.code() << endl;
}
// TX _SENSORS
os << std::endl << "********** TX Sensors ***********" << std::endl;
// List of all available sensors
os << std::endl << "-----> Get TX Sensors Name" << std::endl;
std::vector<std::string> tx_sensor_names = usrp->get_tx_sensor_names(nchan);
os << "Sensor Names: " << std::endl;
for (int index =0; index < tx_sensor_names.size(); index++)
{
// Name
os << "\t" << tx_sensor_names[index] << ": ";
// Value
try
{
uhd::sensor_value_t tx_sensor_value = usrp->get_tx_sensor(tx_sensor_names[index], nchan);
os << tx_sensor_value.to_pp_string()<< std::endl;
}
catch(uhd::runtime_error &e)
{
os << "Exception occured " << e.code() << endl;
}
}
}