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;
}
int setup_device(uhd::usrp::multi_usrp::sptr usrp, double rx_gain, double tx_gain, double freq, double rate){
//create a usrp device
std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
usrp->set_rx_rate(rate);
usrp->set_rx_freq(freq);
usrp->set_rx_gain(rx_gain);
usrp->set_tx_rate(rate);
usrp->set_tx_freq(freq);
usrp->set_tx_gain(tx_gain);
}
void init_usrp() {
cout << "Initial USRP" << endl;
usrp = uhd::usrp::multi_usrp::make(usrp_ip);
usrp->set_rx_rate(rate);
usrp->set_tx_rate(rate);
usrp->set_rx_freq(freq);
usrp->set_tx_freq(freq);
usrp->set_rx_gain(gain);
uhd::meta_range_t rx_range = usrp->get_rx_gain_range();
}
Uhd(const std::vector<size_t> channels, const double tx_rate, const double tx_center_freq, const double tx_gain)
{
uhd::set_thread_priority_safe();
for(const auto ch : channels)
{
usrp = uhd::usrp::multi_usrp::make(std::string(""));
usrp->set_clock_source("internal");
usrp->set_tx_rate(tx_rate, ch);
usrp->set_tx_freq(uhd::tune_request_t(tx_center_freq), ch);
usrp->set_tx_gain(tx_gain, ch);
}
usrp->set_time_now(uhd::time_spec_t(0.0));
}
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;
}
/***********************************************************************
* Set standard defaults for devices
**********************************************************************/
static inline void set_optimum_defaults(uhd::usrp::multi_usrp::sptr usrp){
uhd::property_tree::sptr tree = usrp->get_device()->get_tree();
// Will work on 1st subdev, top-level must make sure it's the right one
uhd::usrp::subdev_spec_t subdev_spec = usrp->get_rx_subdev_spec();
const uhd::fs_path mb_path = "/mboards/0";
const std::string mb_name = tree->access<std::string>(mb_path / "name").get();
if (mb_name.find("USRP2") != std::string::npos or mb_name.find("N200") != std::string::npos or mb_name.find("N210") != std::string::npos or mb_name.find("X300") != std::string::npos or mb_name.find("X310") != std::string::npos){
usrp->set_tx_rate(12.5e6);
usrp->set_rx_rate(12.5e6);
}
else if (mb_name.find("B100") != std::string::npos){
usrp->set_tx_rate(4e6);
usrp->set_rx_rate(4e6);
}
else if (mb_name.find("E100") != std::string::npos or mb_name.find("E110") != std::string::npos){
usrp->set_tx_rate(4e6);
usrp->set_rx_rate(8e6);
}
else{
throw std::runtime_error("self-calibration is not supported for this hardware");
}
const uhd::fs_path tx_fe_path = "/mboards/0/dboards/" + subdev_spec[0].db_name + "/tx_frontends/0";
const std::string tx_name = tree->access<std::string>(tx_fe_path / "name").get();
if (tx_name.find("WBX") != std::string::npos){
usrp->set_tx_gain(0);
}
else if (tx_name.find("SBX") != std::string::npos){
usrp->set_tx_gain(0);
}
else if (tx_name.find("CBX") != std::string::npos){
usrp->set_tx_gain(0);
}
else if (tx_name.find("RFX") != std::string::npos){
usrp->set_tx_gain(0);
}
else{
throw std::runtime_error("self-calibration is not supported for this hardware");
}
const uhd::fs_path rx_fe_path = "/mboards/0/dboards/" + subdev_spec[0].db_name + "/rx_frontends/0";
const std::string rx_name = tree->access<std::string>(rx_fe_path / "name").get();
if (rx_name.find("WBX") != std::string::npos){
usrp->set_rx_gain(25);
}
else if (rx_name.find("SBX") != std::string::npos){
usrp->set_rx_gain(25);
}
else if (rx_name.find("CBX") != std::string::npos){
usrp->set_rx_gain(25);
}
else if (rx_name.find("RFX") != std::string::npos){
usrp->set_rx_gain(25);
}
else{
throw std::runtime_error("self-calibration is not supported for this hardware");
}
}