bool uhd_device::open()
{
// Register msg handler
uhd::msg::register_handler(&uhd_msg_handler);
// Find UHD devices
uhd::device_addr_t args("");
uhd::device_addrs_t dev_addrs = uhd::device::find(args);
if (dev_addrs.size() == 0) {
LOG(ALERT) << "No UHD devices found";
return false;
}
// Use the first found device
LOG(INFO) << "Using discovered UHD device " << dev_addrs[0].to_string();
try {
usrp_dev = uhd::usrp::multi_usrp::make(dev_addrs[0]);
} catch(...) {
LOG(ALERT) << "UHD make failed, device " << dev_addrs[0].to_string();
return false;
}
// Check for a valid device type and set bus type
if (!parse_dev_type())
return false;
#ifdef EXTREF
set_ref_clk(true);
#endif
// Number of samples per over-the-wire packet
tx_spp = usrp_dev->get_device()->get_max_send_samps_per_packet();
rx_spp = usrp_dev->get_device()->get_max_recv_samps_per_packet();
// Set rates
actual_smpl_rt = set_rates(desired_smpl_rt);
if (actual_smpl_rt < 0)
return false;
// Create receive buffer
size_t buf_len = smpl_buf_sz / sizeof(uint64_t);
rx_smpl_buf = new smpl_buf(buf_len, actual_smpl_rt);
// Set receive chain sample advance
ts_offset = (TIMESTAMP)(rx_offset * actual_smpl_rt);
// Initialize and shadow gain values
init_gains();
// Print configuration
LOG(INFO) << "\n" << usrp_dev->get_pp_string();
return true;
}
bool UHDDevice::open(const std::string &args, bool extref)
{
/* Find UHD devices */
uhd::device_addr_t addr(args);
uhd::device_addrs_t dev_addrs = uhd::device::find(addr);
if (dev_addrs.size() == 0) {
LOG(ALERT) << "No UHD devices found with address '" << args << "'";
return false;
}
/* Use the first found device */
LOG(INFO) << "Using discovered UHD device " << dev_addrs[0].to_string();
try {
usrp_dev = uhd::usrp::multi_usrp::make(dev_addrs[0]);
} catch(...) {
LOG(ALERT) << "UHD make failed, device " << dev_addrs[0].to_string();
return false;
}
/* Check for a valid device type and set bus type */
if (!parse_dev_type())
return false;
if (extref)
usrp_dev->set_clock_source("external");
/* Create TX and RX streamers */
uhd::stream_args_t stream_args("sc16");
tx_stream = usrp_dev->get_tx_stream(stream_args);
rx_stream = usrp_dev->get_rx_stream(stream_args);
/* Number of samples per over-the-wire packet */
tx_spp = tx_stream->get_max_num_samps();
rx_spp = rx_stream->get_max_num_samps();
set_rates(tx_rate, rx_rate);
/* Create receive buffer */
size_t buf_len = SAMPLE_BUF_SZ / sizeof(uint32_t);
rx_buffer = new SampleBuffer(buf_len, rx_rate);
/* Set receive chain sample offset */
ts_offset = get_dev_offset(dev_type);
/* Initialize and shadow gain values */
init_gains();
LOG(INFO) << "\n" << usrp_dev->get_pp_string();
return true;
}
bool uhd_device::open()
{
LOG(INFO) << "creating USRP device...";
// Use the first available USRP2 / N210
uhd::device_addr_t dev_addr("type=usrp2");
try {
usrp_dev = uhd::usrp::single_usrp::make(dev_addr);
}
catch(...) {
LOG(ERROR) << "USRP make failed";
return false;
}
// Set master clock rate
usrp_dev->set_master_clock_rate(master_clk_rt);
// Number of samples per over-the-wire packet
tx_spp = usrp_dev->get_device()->get_max_send_samps_per_packet();
rx_spp = usrp_dev->get_device()->get_max_recv_samps_per_packet();
// Set rates
actual_smpl_rt = set_rates(desired_smpl_rt);
if (actual_smpl_rt < 0)
return false;
// Create receive buffer
size_t buf_len = smpl_buf_sz / sizeof(uint32_t);
rx_smpl_buf = new smpl_buf(buf_len, actual_smpl_rt);
// Set receive chain sample offset
ts_offset = (TIMESTAMP)(rx_smpl_offset * actual_smpl_rt);
// Initialize and shadow gain values
init_gains();
// Set reference clock
set_ref_clk(use_ext_ref);
// Print configuration
LOG(INFO) << usrp_dev->get_pp_string();
return true;
}
int uhd_device::open(const std::string &args, bool extref)
{
// Find UHD devices
uhd::device_addr_t addr(args);
uhd::device_addrs_t dev_addrs = uhd::device::find(addr);
if (dev_addrs.size() == 0) {
LOG(ALERT) << "No UHD devices found with address '" << args << "'";
return -1;
}
// Use the first found device
LOG(INFO) << "Using discovered UHD device " << dev_addrs[0].to_string();
try {
usrp_dev = uhd::usrp::multi_usrp::make(dev_addrs[0]);
} catch(...) {
LOG(ALERT) << "UHD make failed, device " << dev_addrs[0].to_string();
return -1;
}
// Check for a valid device type and set bus type
if (!parse_dev_type())
return -1;
if (extref)
set_ref_clk(true);
// Create TX and RX streamers
uhd::stream_args_t stream_args("sc16");
tx_stream = usrp_dev->get_tx_stream(stream_args);
rx_stream = usrp_dev->get_rx_stream(stream_args);
// Number of samples per over-the-wire packet
tx_spp = tx_stream->get_max_num_samps();
rx_spp = rx_stream->get_max_num_samps();
// Set rates
double _tx_rate = select_rate(dev_type, sps);
double _rx_rate = _tx_rate / sps;
if ((_tx_rate > 0.0) && (set_rates(_tx_rate, _rx_rate) < 0))
return -1;
// Create receive buffer
size_t buf_len = SAMPLE_BUF_SZ / sizeof(uint32_t);
rx_smpl_buf = new smpl_buf(buf_len, rx_rate);
// Set receive chain sample offset
double offset = get_dev_offset(dev_type, sps);
if (offset == 0.0) {
LOG(ERR) << "Unsupported configuration, no correction applied";
ts_offset = 0;
} else {
ts_offset = (TIMESTAMP) (offset * rx_rate);
}
// Initialize and shadow gain values
init_gains();
// Print configuration
LOG(INFO) << "\n" << usrp_dev->get_pp_string();
switch (dev_type) {
case B100:
return RESAMP_64M;
case USRP2:
case X3XX:
return RESAMP_100M;
}
return NORMAL;
}
