kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 1 | /* |
kurtis.heimerl | 119ca9c | 2011-11-26 03:18:26 +0000 | [diff] [blame] | 2 | * Device support for Ettus Research UHD driver |
| 3 | * Written by Thomas Tsou <ttsou@vt.edu> |
| 4 | * |
| 5 | * Copyright 2010,2011 Free Software Foundation, Inc. |
| 6 | * |
| 7 | * This program is free software: you can redistribute it and/or modify |
| 8 | * it under the terms of the GNU Affero General Public License as published by |
| 9 | * the Free Software Foundation, either version 3 of the License, or |
| 10 | * (at your option) any later version. |
| 11 | * |
| 12 | * This program is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 15 | * GNU Affero General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Affero General Public License |
| 18 | * along with this program. If not, see <http://www.gnu.org/licenses/>. |
| 19 | * See the COPYING file in the main directory for details. |
| 20 | */ |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 21 | |
| 22 | #include "radioDevice.h" |
| 23 | #include "Threads.h" |
| 24 | #include "Logger.h" |
ttsou | b371ed5 | 2012-01-09 18:11:34 +0000 | [diff] [blame] | 25 | #include <uhd/version.hpp> |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 26 | #include <uhd/property_tree.hpp> |
kurtis.heimerl | 856bbbe | 2011-12-15 00:50:16 +0000 | [diff] [blame] | 27 | #include <uhd/usrp/multi_usrp.hpp> |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 28 | #include <uhd/utils/thread_priority.hpp> |
kurtis.heimerl | 0803ad9 | 2011-11-26 03:18:51 +0000 | [diff] [blame] | 29 | #include <uhd/utils/msg.hpp> |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 30 | |
kurtis.heimerl | ce31733 | 2011-11-26 03:18:39 +0000 | [diff] [blame] | 31 | #ifdef HAVE_CONFIG_H |
| 32 | #include "config.h" |
| 33 | #endif |
| 34 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 35 | #define B100_CLK_RT 52e6 |
| 36 | #define B100_BASE_RT GSMRATE |
| 37 | #define USRP2_BASE_RT 400e3 |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 38 | #define TX_AMPL 0.3 |
| 39 | #define SAMPLE_BUF_SZ (1 << 20) |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 40 | |
| 41 | enum uhd_dev_type { |
| 42 | USRP1, |
| 43 | USRP2, |
| 44 | B100, |
| 45 | NUM_USRP_TYPES, |
| 46 | }; |
kurtis.heimerl | ac0ee12 | 2011-11-28 06:25:58 +0000 | [diff] [blame] | 47 | |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 48 | struct uhd_dev_offset { |
| 49 | enum uhd_dev_type type; |
| 50 | int sps; |
| 51 | double offset; |
| 52 | }; |
| 53 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 54 | /* |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 55 | * Tx / Rx sample offset values. In a perfect world, there is no group delay |
| 56 | * though analog components, and behaviour through digital filters exactly |
| 57 | * matches calculated values. In reality, there are unaccounted factors, |
| 58 | * which are captured in these empirically measured (using a loopback test) |
| 59 | * timing correction values. |
| 60 | * |
| 61 | * Notes: |
| 62 | * USRP1 with timestamps is not supported by UHD. |
| 63 | */ |
| 64 | static struct uhd_dev_offset uhd_offsets[NUM_USRP_TYPES * 3] = { |
| 65 | { USRP1, 1, 0.0 }, |
| 66 | { USRP1, 2, 0.0 }, |
| 67 | { USRP1, 4, 0.0 }, |
| 68 | { USRP2, 1, 5.4394e-5 }, |
| 69 | { USRP2, 2, 0.0 }, |
| 70 | { USRP2, 4, 0.0 }, |
| 71 | { B100, 1, 9.4778e-5 }, |
| 72 | { B100, 2, 5.1100e-5 }, |
| 73 | { B100, 4, 2.9418e-5 }, |
| 74 | }; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 75 | |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 76 | static double get_dev_offset(enum uhd_dev_type type, int sps) |
| 77 | { |
| 78 | if (type == USRP1) { |
| 79 | LOG(ERR) << "Invalid device type"; |
| 80 | return 0.0; |
| 81 | } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 82 | |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 83 | switch (sps) { |
| 84 | case 1: |
| 85 | return uhd_offsets[3 * type + 0].offset; |
| 86 | case 2: |
| 87 | return uhd_offsets[3 * type + 1].offset; |
| 88 | case 4: |
| 89 | return uhd_offsets[3 * type + 2].offset; |
| 90 | } |
kurtis.heimerl | 7ac54b1 | 2011-11-26 03:17:49 +0000 | [diff] [blame] | 91 | |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 92 | LOG(ERR) << "Unsupported samples-per-symbols: " << sps; |
| 93 | return 0.0; |
| 94 | } |
kurtis.heimerl | ce31733 | 2011-11-26 03:18:39 +0000 | [diff] [blame] | 95 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 96 | /* |
| 97 | * Select sample rate based on device type and requested samples-per-symbol. |
| 98 | * The base rate is either GSM symbol rate, 270.833 kHz, or the minimum |
| 99 | * usable channel spacing of 400 kHz. |
| 100 | */ |
| 101 | static double select_rate(uhd_dev_type type, int sps) |
| 102 | { |
| 103 | if ((sps != 4) && (sps != 2) && (sps != 1)) |
| 104 | return -9999.99; |
| 105 | |
| 106 | switch (type) { |
| 107 | case USRP2: |
| 108 | return USRP2_BASE_RT * sps; |
| 109 | break; |
| 110 | case B100: |
| 111 | return B100_BASE_RT * sps; |
| 112 | break; |
| 113 | } |
| 114 | |
| 115 | LOG(ALERT) << "Unknown device type " << type; |
| 116 | return -9999.99; |
| 117 | } |
| 118 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 119 | /** Timestamp conversion |
| 120 | @param timestamp a UHD or OpenBTS timestamp |
| 121 | @param rate sample rate |
| 122 | @return the converted timestamp |
| 123 | */ |
| 124 | uhd::time_spec_t convert_time(TIMESTAMP ticks, double rate) |
| 125 | { |
| 126 | double secs = (double) ticks / rate; |
| 127 | return uhd::time_spec_t(secs); |
| 128 | } |
| 129 | |
| 130 | TIMESTAMP convert_time(uhd::time_spec_t ts, double rate) |
| 131 | { |
kurtis.heimerl | c7cb817 | 2011-11-26 03:17:26 +0000 | [diff] [blame] | 132 | TIMESTAMP ticks = ts.get_full_secs() * rate; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 133 | return ts.get_tick_count(rate) + ticks; |
| 134 | } |
| 135 | |
| 136 | /* |
| 137 | Sample Buffer - Allows reading and writing of timed samples using OpenBTS |
| 138 | or UHD style timestamps. Time conversions are handled |
| 139 | internally or accessable through the static convert calls. |
| 140 | */ |
| 141 | class smpl_buf { |
| 142 | public: |
| 143 | /** Sample buffer constructor |
| 144 | @param len number of 32-bit samples the buffer should hold |
| 145 | @param rate sample clockrate |
| 146 | @param timestamp |
| 147 | */ |
| 148 | smpl_buf(size_t len, double rate); |
| 149 | ~smpl_buf(); |
| 150 | |
| 151 | /** Query number of samples available for reading |
| 152 | @param timestamp time of first sample |
| 153 | @return number of available samples or error |
| 154 | */ |
| 155 | ssize_t avail_smpls(TIMESTAMP timestamp) const; |
| 156 | ssize_t avail_smpls(uhd::time_spec_t timestamp) const; |
| 157 | |
| 158 | /** Read and write |
| 159 | @param buf pointer to buffer |
| 160 | @param len number of samples desired to read or write |
| 161 | @param timestamp time of first stample |
| 162 | @return number of actual samples read or written or error |
| 163 | */ |
| 164 | ssize_t read(void *buf, size_t len, TIMESTAMP timestamp); |
| 165 | ssize_t read(void *buf, size_t len, uhd::time_spec_t timestamp); |
| 166 | ssize_t write(void *buf, size_t len, TIMESTAMP timestamp); |
| 167 | ssize_t write(void *buf, size_t len, uhd::time_spec_t timestamp); |
| 168 | |
| 169 | /** Buffer status string |
| 170 | @return a formatted string describing internal buffer state |
| 171 | */ |
| 172 | std::string str_status() const; |
| 173 | |
| 174 | /** Formatted error string |
| 175 | @param code an error code |
| 176 | @return a formatted error string |
| 177 | */ |
| 178 | static std::string str_code(ssize_t code); |
| 179 | |
| 180 | enum err_code { |
| 181 | ERROR_TIMESTAMP = -1, |
| 182 | ERROR_READ = -2, |
| 183 | ERROR_WRITE = -3, |
| 184 | ERROR_OVERFLOW = -4 |
| 185 | }; |
| 186 | |
| 187 | private: |
| 188 | uint32_t *data; |
| 189 | size_t buf_len; |
| 190 | |
| 191 | double clk_rt; |
| 192 | |
| 193 | TIMESTAMP time_start; |
| 194 | TIMESTAMP time_end; |
| 195 | |
| 196 | size_t data_start; |
| 197 | size_t data_end; |
| 198 | }; |
| 199 | |
| 200 | /* |
| 201 | uhd_device - UHD implementation of the Device interface. Timestamped samples |
| 202 | are sent to and received from the device. An intermediate buffer |
| 203 | on the receive side collects and aligns packets of samples. |
| 204 | Events and errors such as underruns are reported asynchronously |
| 205 | by the device and received in a separate thread. |
| 206 | */ |
| 207 | class uhd_device : public RadioDevice { |
| 208 | public: |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 209 | uhd_device(int sps, bool skip_rx); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 210 | ~uhd_device(); |
| 211 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 212 | int open(const std::string &args); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 213 | bool start(); |
| 214 | bool stop(); |
kurtis.heimerl | 6829210 | 2011-11-26 03:17:28 +0000 | [diff] [blame] | 215 | void restart(uhd::time_spec_t ts); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 216 | void setPriority(); |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 217 | enum TxWindowType getWindowType() { return tx_window; } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 218 | |
| 219 | int readSamples(short *buf, int len, bool *overrun, |
| 220 | TIMESTAMP timestamp, bool *underrun, unsigned *RSSI); |
| 221 | |
| 222 | int writeSamples(short *buf, int len, bool *underrun, |
| 223 | TIMESTAMP timestamp, bool isControl); |
| 224 | |
| 225 | bool updateAlignment(TIMESTAMP timestamp); |
| 226 | |
| 227 | bool setTxFreq(double wFreq); |
| 228 | bool setRxFreq(double wFreq); |
| 229 | |
| 230 | inline TIMESTAMP initialWriteTimestamp() { return 0; } |
| 231 | inline TIMESTAMP initialReadTimestamp() { return 0; } |
| 232 | |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 233 | inline double fullScaleInputValue() { return 32000 * TX_AMPL; } |
kurtis.heimerl | 7ac54b1 | 2011-11-26 03:17:49 +0000 | [diff] [blame] | 234 | inline double fullScaleOutputValue() { return 32000; } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 235 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 236 | double setRxGain(double db); |
| 237 | double getRxGain(void) { return rx_gain; } |
| 238 | double maxRxGain(void) { return rx_gain_max; } |
| 239 | double minRxGain(void) { return rx_gain_min; } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 240 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 241 | double setTxGain(double db); |
| 242 | double maxTxGain(void) { return tx_gain_max; } |
| 243 | double minTxGain(void) { return tx_gain_min; } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 244 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 245 | double getTxFreq() { return tx_freq; } |
| 246 | double getRxFreq() { return rx_freq; } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 247 | |
| 248 | inline double getSampleRate() { return actual_smpl_rt; } |
| 249 | inline double numberRead() { return rx_pkt_cnt; } |
| 250 | inline double numberWritten() { return 0; } |
| 251 | |
| 252 | /** Receive and process asynchronous message |
| 253 | @return true if message received or false on timeout or error |
| 254 | */ |
| 255 | bool recv_async_msg(); |
| 256 | |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 257 | enum err_code { |
| 258 | ERROR_TIMING = -1, |
| 259 | ERROR_UNRECOVERABLE = -2, |
| 260 | ERROR_UNHANDLED = -3, |
| 261 | }; |
| 262 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 263 | private: |
kurtis.heimerl | 856bbbe | 2011-12-15 00:50:16 +0000 | [diff] [blame] | 264 | uhd::usrp::multi_usrp::sptr usrp_dev; |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 265 | uhd::tx_streamer::sptr tx_stream; |
| 266 | uhd::rx_streamer::sptr rx_stream; |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 267 | enum TxWindowType tx_window; |
| 268 | enum uhd_dev_type dev_type; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 269 | |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 270 | int sps; |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 271 | double desired_smpl_rt, actual_smpl_rt; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 272 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 273 | double tx_gain, tx_gain_min, tx_gain_max; |
| 274 | double rx_gain, rx_gain_min, rx_gain_max; |
| 275 | |
| 276 | double tx_freq, rx_freq; |
| 277 | size_t tx_spp, rx_spp; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 278 | |
| 279 | bool started; |
| 280 | bool aligned; |
| 281 | bool skip_rx; |
| 282 | |
| 283 | size_t rx_pkt_cnt; |
| 284 | size_t drop_cnt; |
| 285 | uhd::time_spec_t prev_ts; |
| 286 | |
| 287 | TIMESTAMP ts_offset; |
| 288 | smpl_buf *rx_smpl_buf; |
| 289 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 290 | void init_gains(); |
kurtis.heimerl | 24481de | 2011-11-26 03:17:18 +0000 | [diff] [blame] | 291 | void set_ref_clk(bool ext_clk); |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 292 | int set_master_clk(double rate); |
| 293 | int set_rates(double rate); |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 294 | bool parse_dev_type(); |
kurtis.heimerl | 33f748f | 2011-11-26 03:16:57 +0000 | [diff] [blame] | 295 | bool flush_recv(size_t num_pkts); |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 296 | int check_rx_md_err(uhd::rx_metadata_t &md, ssize_t num_smpls); |
kurtis.heimerl | 24481de | 2011-11-26 03:17:18 +0000 | [diff] [blame] | 297 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 298 | std::string str_code(uhd::rx_metadata_t metadata); |
| 299 | std::string str_code(uhd::async_metadata_t metadata); |
| 300 | |
| 301 | Thread async_event_thrd; |
| 302 | }; |
| 303 | |
| 304 | void *async_event_loop(uhd_device *dev) |
| 305 | { |
| 306 | while (1) { |
| 307 | dev->recv_async_msg(); |
| 308 | pthread_testcancel(); |
| 309 | } |
| 310 | } |
| 311 | |
kurtis.heimerl | 0803ad9 | 2011-11-26 03:18:51 +0000 | [diff] [blame] | 312 | /* |
| 313 | Catch and drop underrun 'U' and overrun 'O' messages from stdout |
| 314 | since we already report using the logging facility. Direct |
| 315 | everything else appropriately. |
| 316 | */ |
| 317 | void uhd_msg_handler(uhd::msg::type_t type, const std::string &msg) |
| 318 | { |
| 319 | switch (type) { |
| 320 | case uhd::msg::status: |
| 321 | LOG(INFO) << msg; |
| 322 | break; |
| 323 | case uhd::msg::warning: |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 324 | LOG(WARNING) << msg; |
kurtis.heimerl | 0803ad9 | 2011-11-26 03:18:51 +0000 | [diff] [blame] | 325 | break; |
| 326 | case uhd::msg::error: |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 327 | LOG(ERR) << msg; |
kurtis.heimerl | 0803ad9 | 2011-11-26 03:18:51 +0000 | [diff] [blame] | 328 | break; |
| 329 | case uhd::msg::fastpath: |
| 330 | break; |
| 331 | } |
| 332 | } |
| 333 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 334 | uhd_device::uhd_device(int sps, bool skip_rx) |
| 335 | : tx_gain(0.0), tx_gain_min(0.0), tx_gain_max(0.0), |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 336 | rx_gain(0.0), rx_gain_min(0.0), rx_gain_max(0.0), |
| 337 | tx_freq(0.0), rx_freq(0.0), tx_spp(0), rx_spp(0), |
kurtis.heimerl | 187b03d | 2011-11-26 03:17:40 +0000 | [diff] [blame] | 338 | started(false), aligned(false), rx_pkt_cnt(0), drop_cnt(0), |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 339 | prev_ts(0,0), ts_offset(0), rx_smpl_buf(NULL) |
| 340 | { |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 341 | this->sps = sps; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 342 | this->skip_rx = skip_rx; |
| 343 | } |
| 344 | |
| 345 | uhd_device::~uhd_device() |
| 346 | { |
| 347 | stop(); |
| 348 | |
| 349 | if (rx_smpl_buf) |
| 350 | delete rx_smpl_buf; |
| 351 | } |
| 352 | |
kurtis.heimerl | 24481de | 2011-11-26 03:17:18 +0000 | [diff] [blame] | 353 | void uhd_device::init_gains() |
| 354 | { |
| 355 | uhd::gain_range_t range; |
| 356 | |
| 357 | range = usrp_dev->get_tx_gain_range(); |
| 358 | tx_gain_min = range.start(); |
| 359 | tx_gain_max = range.stop(); |
| 360 | |
| 361 | range = usrp_dev->get_rx_gain_range(); |
| 362 | rx_gain_min = range.start(); |
| 363 | rx_gain_max = range.stop(); |
| 364 | |
| 365 | usrp_dev->set_tx_gain((tx_gain_min + tx_gain_max) / 2); |
| 366 | usrp_dev->set_rx_gain((rx_gain_min + rx_gain_max) / 2); |
| 367 | |
| 368 | tx_gain = usrp_dev->get_tx_gain(); |
| 369 | rx_gain = usrp_dev->get_rx_gain(); |
| 370 | |
| 371 | return; |
| 372 | } |
| 373 | |
| 374 | void uhd_device::set_ref_clk(bool ext_clk) |
| 375 | { |
kurtis.heimerl | 24481de | 2011-11-26 03:17:18 +0000 | [diff] [blame] | 376 | if (ext_clk) |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 377 | usrp_dev->set_clock_source("external"); |
kurtis.heimerl | 24481de | 2011-11-26 03:17:18 +0000 | [diff] [blame] | 378 | |
| 379 | return; |
| 380 | } |
| 381 | |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 382 | int uhd_device::set_master_clk(double clk_rate) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 383 | { |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 384 | double actual_clk_rt; |
kurtis.heimerl | ac0ee12 | 2011-11-28 06:25:58 +0000 | [diff] [blame] | 385 | |
kurtis.heimerl | d3e2590 | 2011-11-26 03:18:13 +0000 | [diff] [blame] | 386 | // Set master clock rate |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 387 | usrp_dev->set_master_clock_rate(clk_rate); |
kurtis.heimerl | d3e2590 | 2011-11-26 03:18:13 +0000 | [diff] [blame] | 388 | actual_clk_rt = usrp_dev->get_master_clock_rate(); |
| 389 | |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 390 | if (actual_clk_rt != clk_rate) { |
kurtis.heimerl | e332032 | 2011-11-28 06:26:08 +0000 | [diff] [blame] | 391 | LOG(ALERT) << "Failed to set master clock rate"; |
| 392 | LOG(ALERT) << "Actual clock rate " << actual_clk_rt; |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 393 | return -1; |
kurtis.heimerl | d3e2590 | 2011-11-26 03:18:13 +0000 | [diff] [blame] | 394 | } |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 395 | |
| 396 | return 0; |
| 397 | } |
| 398 | |
| 399 | int uhd_device::set_rates(double rate) |
| 400 | { |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 401 | double offset_limit = 10.0; |
| 402 | double tx_offset, rx_offset; |
| 403 | |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 404 | // B100 is the only device where we set FPGA clocking |
| 405 | if (dev_type == B100) { |
| 406 | if (set_master_clk(B100_CLK_RT) < 0) |
| 407 | return -1; |
| 408 | } |
kurtis.heimerl | d3e2590 | 2011-11-26 03:18:13 +0000 | [diff] [blame] | 409 | |
| 410 | // Set sample rates |
kurtis.heimerl | 24481de | 2011-11-26 03:17:18 +0000 | [diff] [blame] | 411 | usrp_dev->set_tx_rate(rate); |
| 412 | usrp_dev->set_rx_rate(rate); |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 413 | actual_smpl_rt = usrp_dev->get_tx_rate(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 414 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 415 | tx_offset = actual_smpl_rt - rate; |
| 416 | rx_offset = usrp_dev->get_rx_rate() - rate; |
| 417 | if ((tx_offset > offset_limit) || (rx_offset > offset_limit)) { |
kurtis.heimerl | e332032 | 2011-11-28 06:26:08 +0000 | [diff] [blame] | 418 | LOG(ALERT) << "Actual sample rate differs from desired rate"; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 419 | LOG(ALERT) << "Tx/Rx (" << actual_smpl_rt << "/" |
| 420 | << usrp_dev->get_rx_rate() << ")"; |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 421 | return -1; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 422 | } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 423 | |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 424 | return 0; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 425 | } |
| 426 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 427 | double uhd_device::setTxGain(double db) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 428 | { |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 429 | usrp_dev->set_tx_gain(db); |
| 430 | tx_gain = usrp_dev->get_tx_gain(); |
| 431 | |
| 432 | LOG(INFO) << "Set TX gain to " << tx_gain << "dB"; |
| 433 | |
| 434 | return tx_gain; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 435 | } |
| 436 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 437 | double uhd_device::setRxGain(double db) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 438 | { |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 439 | usrp_dev->set_rx_gain(db); |
| 440 | rx_gain = usrp_dev->get_rx_gain(); |
| 441 | |
| 442 | LOG(INFO) << "Set RX gain to " << rx_gain << "dB"; |
| 443 | |
| 444 | return rx_gain; |
| 445 | } |
| 446 | |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 447 | /* |
| 448 | Parse the UHD device tree and mboard name to find out what device we're |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 449 | dealing with. We need the window type so that the transceiver knows how to |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 450 | deal with the transport latency. Reject the USRP1 because UHD doesn't |
| 451 | support timestamped samples with it. |
| 452 | */ |
| 453 | bool uhd_device::parse_dev_type() |
| 454 | { |
| 455 | std::string mboard_str, dev_str; |
| 456 | uhd::property_tree::sptr prop_tree; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 457 | size_t usrp1_str, usrp2_str, b100_str; |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 458 | |
| 459 | prop_tree = usrp_dev->get_device()->get_tree(); |
| 460 | dev_str = prop_tree->access<std::string>("/name").get(); |
| 461 | mboard_str = usrp_dev->get_mboard_name(); |
| 462 | |
| 463 | usrp1_str = dev_str.find("USRP1"); |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 464 | usrp2_str = dev_str.find("USRP2"); |
| 465 | b100_str = mboard_str.find("B100"); |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 466 | |
| 467 | if (usrp1_str != std::string::npos) { |
kurtis.heimerl | 523ae5a | 2011-11-28 06:26:01 +0000 | [diff] [blame] | 468 | LOG(ALERT) << "USRP1 is not supported using the UHD driver"; |
| 469 | LOG(ALERT) << "Please compile with GNU Radio libusrp support"; |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 470 | dev_type = USRP1; |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 471 | return false; |
| 472 | } |
| 473 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 474 | if (b100_str != std::string::npos) { |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 475 | tx_window = TX_WINDOW_USRP1; |
| 476 | LOG(INFO) << "Using USRP1 type transmit window for " |
| 477 | << dev_str << " " << mboard_str; |
| 478 | dev_type = B100; |
| 479 | return true; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 480 | } else if (usrp2_str != std::string::npos) { |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 481 | dev_type = USRP2; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 482 | } else { |
| 483 | LOG(ALERT) << "Unknown UHD device type"; |
| 484 | return false; |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 485 | } |
| 486 | |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 487 | tx_window = TX_WINDOW_FIXED; |
| 488 | LOG(INFO) << "Using fixed transmit window for " |
| 489 | << dev_str << " " << mboard_str; |
kurtis.heimerl | b7358ce | 2011-11-26 03:18:57 +0000 | [diff] [blame] | 490 | return true; |
| 491 | } |
| 492 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 493 | int uhd_device::open(const std::string &args) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 494 | { |
kurtis.heimerl | 0803ad9 | 2011-11-26 03:18:51 +0000 | [diff] [blame] | 495 | // Register msg handler |
| 496 | uhd::msg::register_handler(&uhd_msg_handler); |
| 497 | |
kurtis.heimerl | 4403d4f | 2011-11-28 06:26:04 +0000 | [diff] [blame] | 498 | // Find UHD devices |
ttsou | f60dafa | 2012-10-22 00:07:14 +0000 | [diff] [blame] | 499 | uhd::device_addr_t addr(args); |
| 500 | uhd::device_addrs_t dev_addrs = uhd::device::find(addr); |
kurtis.heimerl | 4403d4f | 2011-11-28 06:26:04 +0000 | [diff] [blame] | 501 | if (dev_addrs.size() == 0) { |
ttsou | f60dafa | 2012-10-22 00:07:14 +0000 | [diff] [blame] | 502 | LOG(ALERT) << "No UHD devices found with address '" << args << "'"; |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 503 | return -1; |
kurtis.heimerl | 4403d4f | 2011-11-28 06:26:04 +0000 | [diff] [blame] | 504 | } |
| 505 | |
| 506 | // Use the first found device |
| 507 | LOG(INFO) << "Using discovered UHD device " << dev_addrs[0].to_string(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 508 | try { |
kurtis.heimerl | 856bbbe | 2011-12-15 00:50:16 +0000 | [diff] [blame] | 509 | usrp_dev = uhd::usrp::multi_usrp::make(dev_addrs[0]); |
kurtis.heimerl | e380af3 | 2011-11-26 03:18:55 +0000 | [diff] [blame] | 510 | } catch(...) { |
ttsou | 3b5c0c1 | 2012-02-14 17:58:11 +0000 | [diff] [blame] | 511 | LOG(ALERT) << "UHD make failed, device " << dev_addrs[0].to_string(); |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 512 | return -1; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 513 | } |
| 514 | |
kurtis.heimerl | 523ae5a | 2011-11-28 06:26:01 +0000 | [diff] [blame] | 515 | // Check for a valid device type and set bus type |
| 516 | if (!parse_dev_type()) |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 517 | return -1; |
kurtis.heimerl | 523ae5a | 2011-11-28 06:26:01 +0000 | [diff] [blame] | 518 | |
kurtis.heimerl | c6b9b70 | 2011-11-26 03:19:19 +0000 | [diff] [blame] | 519 | #ifdef EXTREF |
| 520 | set_ref_clk(true); |
| 521 | #endif |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 522 | // Create TX and RX streamers |
| 523 | uhd::stream_args_t stream_args("sc16"); |
| 524 | tx_stream = usrp_dev->get_tx_stream(stream_args); |
| 525 | rx_stream = usrp_dev->get_rx_stream(stream_args); |
kurtis.heimerl | c6b9b70 | 2011-11-26 03:19:19 +0000 | [diff] [blame] | 526 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 527 | // Number of samples per over-the-wire packet |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 528 | tx_spp = tx_stream->get_max_num_samps(); |
| 529 | rx_spp = rx_stream->get_max_num_samps(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 530 | |
| 531 | // Set rates |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 532 | desired_smpl_rt = select_rate(dev_type, sps); |
Thomas Tsou | 02d88d1 | 2013-04-05 15:36:30 -0400 | [diff] [blame] | 533 | if (set_rates(desired_smpl_rt) < 0) |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 534 | return -1; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 535 | |
| 536 | // Create receive buffer |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 537 | size_t buf_len = SAMPLE_BUF_SZ / sizeof(uint32_t); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 538 | rx_smpl_buf = new smpl_buf(buf_len, actual_smpl_rt); |
| 539 | |
| 540 | // Set receive chain sample offset |
Thomas Tsou | e3e8814 | 2013-04-05 20:42:41 -0400 | [diff] [blame] | 541 | double offset = get_dev_offset(dev_type, sps); |
| 542 | if (offset == 0.0) { |
| 543 | LOG(ERR) << "Unsupported configuration, no correction applied"; |
| 544 | ts_offset = 0; |
| 545 | } else { |
| 546 | ts_offset = (TIMESTAMP) (offset * actual_smpl_rt); |
| 547 | } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 548 | |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 549 | // Initialize and shadow gain values |
| 550 | init_gains(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 551 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 552 | // Print configuration |
kurtis.heimerl | 3998da7 | 2011-11-26 03:19:00 +0000 | [diff] [blame] | 553 | LOG(INFO) << "\n" << usrp_dev->get_pp_string(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 554 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 555 | if (dev_type == USRP2) |
| 556 | return RESAMP; |
| 557 | |
| 558 | return NORMAL; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 559 | } |
| 560 | |
kurtis.heimerl | 33f748f | 2011-11-26 03:16:57 +0000 | [diff] [blame] | 561 | bool uhd_device::flush_recv(size_t num_pkts) |
| 562 | { |
kurtis.heimerl | 495d3c8 | 2011-11-26 03:18:02 +0000 | [diff] [blame] | 563 | uhd::rx_metadata_t md; |
kurtis.heimerl | 33f748f | 2011-11-26 03:16:57 +0000 | [diff] [blame] | 564 | size_t num_smpls; |
| 565 | uint32_t buff[rx_spp]; |
kurtis.heimerl | 187b03d | 2011-11-26 03:17:40 +0000 | [diff] [blame] | 566 | float timeout; |
| 567 | |
| 568 | // Use .01 sec instead of the default .1 sec |
| 569 | timeout = .01; |
kurtis.heimerl | 33f748f | 2011-11-26 03:16:57 +0000 | [diff] [blame] | 570 | |
| 571 | for (size_t i = 0; i < num_pkts; i++) { |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 572 | num_smpls = rx_stream->recv(buff, rx_spp, md, |
| 573 | timeout, true); |
kurtis.heimerl | 495d3c8 | 2011-11-26 03:18:02 +0000 | [diff] [blame] | 574 | if (!num_smpls) { |
| 575 | switch (md.error_code) { |
| 576 | case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT: |
| 577 | return true; |
| 578 | default: |
| 579 | continue; |
| 580 | } |
| 581 | } |
kurtis.heimerl | 33f748f | 2011-11-26 03:16:57 +0000 | [diff] [blame] | 582 | } |
| 583 | |
| 584 | return true; |
| 585 | } |
| 586 | |
kurtis.heimerl | 6829210 | 2011-11-26 03:17:28 +0000 | [diff] [blame] | 587 | void uhd_device::restart(uhd::time_spec_t ts) |
kurtis.heimerl | a14d4be | 2011-11-26 03:17:23 +0000 | [diff] [blame] | 588 | { |
kurtis.heimerl | 6829210 | 2011-11-26 03:17:28 +0000 | [diff] [blame] | 589 | uhd::stream_cmd_t cmd = uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS; |
| 590 | usrp_dev->issue_stream_cmd(cmd); |
kurtis.heimerl | a14d4be | 2011-11-26 03:17:23 +0000 | [diff] [blame] | 591 | |
kurtis.heimerl | 6829210 | 2011-11-26 03:17:28 +0000 | [diff] [blame] | 592 | flush_recv(50); |
| 593 | |
| 594 | usrp_dev->set_time_now(ts); |
| 595 | aligned = false; |
| 596 | |
| 597 | cmd = uhd::stream_cmd_t::STREAM_MODE_START_CONTINUOUS; |
| 598 | cmd.stream_now = true; |
| 599 | usrp_dev->issue_stream_cmd(cmd); |
kurtis.heimerl | a14d4be | 2011-11-26 03:17:23 +0000 | [diff] [blame] | 600 | } |
| 601 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 602 | bool uhd_device::start() |
| 603 | { |
| 604 | LOG(INFO) << "Starting USRP..."; |
| 605 | |
| 606 | if (started) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 607 | LOG(ERR) << "Device already started"; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 608 | return false; |
| 609 | } |
| 610 | |
| 611 | setPriority(); |
| 612 | |
| 613 | // Start asynchronous event (underrun check) loop |
| 614 | async_event_thrd.start((void * (*)(void*))async_event_loop, (void*)this); |
| 615 | |
| 616 | // Start streaming |
kurtis.heimerl | 187b03d | 2011-11-26 03:17:40 +0000 | [diff] [blame] | 617 | restart(uhd::time_spec_t(0.0)); |
kurtis.heimerl | 33f748f | 2011-11-26 03:16:57 +0000 | [diff] [blame] | 618 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 619 | // Display usrp time |
| 620 | double time_now = usrp_dev->get_time_now().get_real_secs(); |
| 621 | LOG(INFO) << "The current time is " << time_now << " seconds"; |
| 622 | |
| 623 | started = true; |
| 624 | return true; |
| 625 | } |
| 626 | |
| 627 | bool uhd_device::stop() |
| 628 | { |
| 629 | uhd::stream_cmd_t stream_cmd = |
| 630 | uhd::stream_cmd_t::STREAM_MODE_STOP_CONTINUOUS; |
| 631 | |
| 632 | usrp_dev->issue_stream_cmd(stream_cmd); |
| 633 | |
| 634 | started = false; |
| 635 | return true; |
| 636 | } |
| 637 | |
| 638 | void uhd_device::setPriority() |
| 639 | { |
| 640 | uhd::set_thread_priority_safe(); |
| 641 | return; |
| 642 | } |
| 643 | |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 644 | int uhd_device::check_rx_md_err(uhd::rx_metadata_t &md, ssize_t num_smpls) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 645 | { |
kurtis.heimerl | 3cc1da9 | 2011-11-26 03:17:02 +0000 | [diff] [blame] | 646 | uhd::time_spec_t ts; |
| 647 | |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 648 | if (!num_smpls) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 649 | LOG(ERR) << str_code(md); |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 650 | |
| 651 | switch (md.error_code) { |
| 652 | case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT: |
ttsou | b371ed5 | 2012-01-09 18:11:34 +0000 | [diff] [blame] | 653 | LOG(ALERT) << "UHD: Receive timed out"; |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 654 | return ERROR_UNRECOVERABLE; |
| 655 | case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW: |
| 656 | case uhd::rx_metadata_t::ERROR_CODE_LATE_COMMAND: |
| 657 | case uhd::rx_metadata_t::ERROR_CODE_BROKEN_CHAIN: |
| 658 | case uhd::rx_metadata_t::ERROR_CODE_BAD_PACKET: |
| 659 | default: |
| 660 | return ERROR_UNHANDLED; |
| 661 | } |
| 662 | } |
| 663 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 664 | // Missing timestamp |
| 665 | if (!md.has_time_spec) { |
ttsou | b371ed5 | 2012-01-09 18:11:34 +0000 | [diff] [blame] | 666 | LOG(ALERT) << "UHD: Received packet missing timestamp"; |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 667 | return ERROR_UNRECOVERABLE; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 668 | } |
| 669 | |
kurtis.heimerl | 3cc1da9 | 2011-11-26 03:17:02 +0000 | [diff] [blame] | 670 | ts = md.time_spec; |
| 671 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 672 | // Monotonicity check |
kurtis.heimerl | 3cc1da9 | 2011-11-26 03:17:02 +0000 | [diff] [blame] | 673 | if (ts < prev_ts) { |
ttsou | b371ed5 | 2012-01-09 18:11:34 +0000 | [diff] [blame] | 674 | LOG(ALERT) << "UHD: Loss of monotonic time"; |
ttsou | 724eb36 | 2012-03-13 02:20:01 +0000 | [diff] [blame] | 675 | LOG(ALERT) << "Current time: " << ts.get_real_secs() << ", " |
| 676 | << "Previous time: " << prev_ts.get_real_secs(); |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 677 | return ERROR_TIMING; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 678 | } else { |
kurtis.heimerl | 3cc1da9 | 2011-11-26 03:17:02 +0000 | [diff] [blame] | 679 | prev_ts = ts; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 680 | } |
| 681 | |
| 682 | return 0; |
| 683 | } |
| 684 | |
| 685 | int uhd_device::readSamples(short *buf, int len, bool *overrun, |
| 686 | TIMESTAMP timestamp, bool *underrun, unsigned *RSSI) |
| 687 | { |
| 688 | ssize_t rc; |
| 689 | uhd::time_spec_t ts; |
| 690 | uhd::rx_metadata_t metadata; |
| 691 | uint32_t pkt_buf[rx_spp]; |
| 692 | |
| 693 | if (skip_rx) |
| 694 | return 0; |
| 695 | |
| 696 | // Shift read time with respect to transmit clock |
| 697 | timestamp += ts_offset; |
| 698 | |
| 699 | ts = convert_time(timestamp, actual_smpl_rt); |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 700 | LOG(DEBUG) << "Requested timestamp = " << ts.get_real_secs(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 701 | |
| 702 | // Check that timestamp is valid |
| 703 | rc = rx_smpl_buf->avail_smpls(timestamp); |
| 704 | if (rc < 0) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 705 | LOG(ERR) << rx_smpl_buf->str_code(rc); |
| 706 | LOG(ERR) << rx_smpl_buf->str_status(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 707 | return 0; |
| 708 | } |
| 709 | |
| 710 | // Receive samples from the usrp until we have enough |
| 711 | while (rx_smpl_buf->avail_smpls(timestamp) < len) { |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 712 | size_t num_smpls = rx_stream->recv( |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 713 | (void*)pkt_buf, |
| 714 | rx_spp, |
| 715 | metadata, |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 716 | 0.1, |
| 717 | true); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 718 | rx_pkt_cnt++; |
| 719 | |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 720 | // Check for errors |
| 721 | rc = check_rx_md_err(metadata, num_smpls); |
| 722 | switch (rc) { |
| 723 | case ERROR_UNRECOVERABLE: |
ttsou | b371ed5 | 2012-01-09 18:11:34 +0000 | [diff] [blame] | 724 | LOG(ALERT) << "UHD: Version " << uhd::get_version_string(); |
| 725 | LOG(ALERT) << "UHD: Unrecoverable error, exiting..."; |
kurtis.heimerl | d4be074 | 2011-11-26 03:17:46 +0000 | [diff] [blame] | 726 | exit(-1); |
| 727 | case ERROR_TIMING: |
| 728 | restart(prev_ts); |
| 729 | case ERROR_UNHANDLED: |
kurtis.heimerl | 513a629 | 2011-11-26 03:18:36 +0000 | [diff] [blame] | 730 | continue; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 731 | } |
| 732 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 733 | |
| 734 | ts = metadata.time_spec; |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 735 | LOG(DEBUG) << "Received timestamp = " << ts.get_real_secs(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 736 | |
| 737 | rc = rx_smpl_buf->write(pkt_buf, |
| 738 | num_smpls, |
| 739 | metadata.time_spec); |
| 740 | |
| 741 | // Continue on local overrun, exit on other errors |
| 742 | if ((rc < 0)) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 743 | LOG(ERR) << rx_smpl_buf->str_code(rc); |
| 744 | LOG(ERR) << rx_smpl_buf->str_status(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 745 | if (rc != smpl_buf::ERROR_OVERFLOW) |
| 746 | return 0; |
| 747 | } |
| 748 | } |
| 749 | |
| 750 | // We have enough samples |
| 751 | rc = rx_smpl_buf->read(buf, len, timestamp); |
| 752 | if ((rc < 0) || (rc != len)) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 753 | LOG(ERR) << rx_smpl_buf->str_code(rc); |
| 754 | LOG(ERR) << rx_smpl_buf->str_status(); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 755 | return 0; |
| 756 | } |
| 757 | |
| 758 | return len; |
| 759 | } |
| 760 | |
| 761 | int uhd_device::writeSamples(short *buf, int len, bool *underrun, |
| 762 | unsigned long long timestamp,bool isControl) |
| 763 | { |
| 764 | uhd::tx_metadata_t metadata; |
| 765 | metadata.has_time_spec = true; |
| 766 | metadata.start_of_burst = false; |
| 767 | metadata.end_of_burst = false; |
| 768 | metadata.time_spec = convert_time(timestamp, actual_smpl_rt); |
| 769 | |
| 770 | // No control packets |
| 771 | if (isControl) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 772 | LOG(ERR) << "Control packets not supported"; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 773 | return 0; |
| 774 | } |
| 775 | |
| 776 | // Drop a fixed number of packets (magic value) |
| 777 | if (!aligned) { |
| 778 | drop_cnt++; |
| 779 | |
| 780 | if (drop_cnt == 1) { |
| 781 | LOG(DEBUG) << "Aligning transmitter: stop burst"; |
ttsou | 221f23e | 2012-08-08 00:51:34 +0000 | [diff] [blame] | 782 | *underrun = true; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 783 | metadata.end_of_burst = true; |
| 784 | } else if (drop_cnt < 30) { |
kurtis.heimerl | 4e59d66 | 2011-11-26 03:19:11 +0000 | [diff] [blame] | 785 | LOG(DEBUG) << "Aligning transmitter: packet advance"; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 786 | return len; |
| 787 | } else { |
| 788 | LOG(DEBUG) << "Aligning transmitter: start burst"; |
| 789 | metadata.start_of_burst = true; |
| 790 | aligned = true; |
| 791 | drop_cnt = 0; |
| 792 | } |
| 793 | } |
| 794 | |
Thomas Tsou | b4cb4e2 | 2013-04-05 15:11:35 -0400 | [diff] [blame] | 795 | size_t num_smpls = tx_stream->send(buf, len, metadata); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 796 | |
ttsou | b371ed5 | 2012-01-09 18:11:34 +0000 | [diff] [blame] | 797 | if (num_smpls != (unsigned) len) { |
| 798 | LOG(ALERT) << "UHD: Device send timed out"; |
| 799 | LOG(ALERT) << "UHD: Version " << uhd::get_version_string(); |
| 800 | LOG(ALERT) << "UHD: Unrecoverable error, exiting..."; |
| 801 | exit(-1); |
| 802 | } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 803 | |
| 804 | return num_smpls; |
| 805 | } |
| 806 | |
| 807 | bool uhd_device::updateAlignment(TIMESTAMP timestamp) |
| 808 | { |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 809 | return true; |
| 810 | } |
| 811 | |
| 812 | bool uhd_device::setTxFreq(double wFreq) |
| 813 | { |
| 814 | uhd::tune_result_t tr = usrp_dev->set_tx_freq(wFreq); |
kurtis.heimerl | 3998da7 | 2011-11-26 03:19:00 +0000 | [diff] [blame] | 815 | LOG(INFO) << "\n" << tr.to_pp_string(); |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 816 | tx_freq = usrp_dev->get_tx_freq(); |
| 817 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 818 | return true; |
| 819 | } |
| 820 | |
| 821 | bool uhd_device::setRxFreq(double wFreq) |
| 822 | { |
| 823 | uhd::tune_result_t tr = usrp_dev->set_rx_freq(wFreq); |
kurtis.heimerl | 3998da7 | 2011-11-26 03:19:00 +0000 | [diff] [blame] | 824 | LOG(INFO) << "\n" << tr.to_pp_string(); |
kurtis.heimerl | 02d0405 | 2011-11-26 03:17:10 +0000 | [diff] [blame] | 825 | rx_freq = usrp_dev->get_rx_freq(); |
| 826 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 827 | return true; |
| 828 | } |
| 829 | |
| 830 | bool uhd_device::recv_async_msg() |
| 831 | { |
ttsou | 60dc4c9 | 2012-08-08 23:30:23 +0000 | [diff] [blame] | 832 | uhd::async_metadata_t md; |
| 833 | if (!usrp_dev->get_device()->recv_async_msg(md)) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 834 | return false; |
| 835 | |
| 836 | // Assume that any error requires resynchronization |
ttsou | 60dc4c9 | 2012-08-08 23:30:23 +0000 | [diff] [blame] | 837 | if (md.event_code != uhd::async_metadata_t::EVENT_CODE_BURST_ACK) { |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 838 | aligned = false; |
ttsou | 60dc4c9 | 2012-08-08 23:30:23 +0000 | [diff] [blame] | 839 | |
| 840 | if ((md.event_code != uhd::async_metadata_t::EVENT_CODE_UNDERFLOW) && |
| 841 | (md.event_code != uhd::async_metadata_t::EVENT_CODE_TIME_ERROR)) { |
| 842 | LOG(ERR) << str_code(md); |
| 843 | } |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 844 | } |
| 845 | |
| 846 | return true; |
| 847 | } |
| 848 | |
| 849 | std::string uhd_device::str_code(uhd::rx_metadata_t metadata) |
| 850 | { |
| 851 | std::ostringstream ost("UHD: "); |
| 852 | |
| 853 | switch (metadata.error_code) { |
| 854 | case uhd::rx_metadata_t::ERROR_CODE_NONE: |
| 855 | ost << "No error"; |
| 856 | break; |
| 857 | case uhd::rx_metadata_t::ERROR_CODE_TIMEOUT: |
| 858 | ost << "No packet received, implementation timed-out"; |
| 859 | break; |
| 860 | case uhd::rx_metadata_t::ERROR_CODE_LATE_COMMAND: |
| 861 | ost << "A stream command was issued in the past"; |
| 862 | break; |
| 863 | case uhd::rx_metadata_t::ERROR_CODE_BROKEN_CHAIN: |
| 864 | ost << "Expected another stream command"; |
| 865 | break; |
| 866 | case uhd::rx_metadata_t::ERROR_CODE_OVERFLOW: |
| 867 | ost << "An internal receive buffer has filled"; |
| 868 | break; |
| 869 | case uhd::rx_metadata_t::ERROR_CODE_BAD_PACKET: |
| 870 | ost << "The packet could not be parsed"; |
| 871 | break; |
| 872 | default: |
| 873 | ost << "Unknown error " << metadata.error_code; |
| 874 | } |
| 875 | |
| 876 | if (metadata.has_time_spec) |
| 877 | ost << " at " << metadata.time_spec.get_real_secs() << " sec."; |
| 878 | |
| 879 | return ost.str(); |
| 880 | } |
| 881 | |
| 882 | std::string uhd_device::str_code(uhd::async_metadata_t metadata) |
| 883 | { |
| 884 | std::ostringstream ost("UHD: "); |
| 885 | |
| 886 | switch (metadata.event_code) { |
| 887 | case uhd::async_metadata_t::EVENT_CODE_BURST_ACK: |
| 888 | ost << "A packet was successfully transmitted"; |
| 889 | break; |
| 890 | case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW: |
| 891 | ost << "An internal send buffer has emptied"; |
| 892 | break; |
| 893 | case uhd::async_metadata_t::EVENT_CODE_SEQ_ERROR: |
| 894 | ost << "Packet loss between host and device"; |
| 895 | break; |
| 896 | case uhd::async_metadata_t::EVENT_CODE_TIME_ERROR: |
| 897 | ost << "Packet time was too late or too early"; |
| 898 | break; |
| 899 | case uhd::async_metadata_t::EVENT_CODE_UNDERFLOW_IN_PACKET: |
| 900 | ost << "Underflow occurred inside a packet"; |
| 901 | break; |
| 902 | case uhd::async_metadata_t::EVENT_CODE_SEQ_ERROR_IN_BURST: |
| 903 | ost << "Packet loss within a burst"; |
| 904 | break; |
| 905 | default: |
| 906 | ost << "Unknown error " << metadata.event_code; |
| 907 | } |
| 908 | |
| 909 | if (metadata.has_time_spec) |
| 910 | ost << " at " << metadata.time_spec.get_real_secs() << " sec."; |
| 911 | |
| 912 | return ost.str(); |
| 913 | } |
| 914 | |
| 915 | smpl_buf::smpl_buf(size_t len, double rate) |
| 916 | : buf_len(len), clk_rt(rate), |
| 917 | time_start(0), time_end(0), data_start(0), data_end(0) |
| 918 | { |
| 919 | data = new uint32_t[len]; |
| 920 | } |
| 921 | |
| 922 | smpl_buf::~smpl_buf() |
| 923 | { |
| 924 | delete[] data; |
| 925 | } |
| 926 | |
| 927 | ssize_t smpl_buf::avail_smpls(TIMESTAMP timestamp) const |
| 928 | { |
| 929 | if (timestamp < time_start) |
| 930 | return ERROR_TIMESTAMP; |
| 931 | else if (timestamp >= time_end) |
| 932 | return 0; |
| 933 | else |
| 934 | return time_end - timestamp; |
| 935 | } |
| 936 | |
| 937 | ssize_t smpl_buf::avail_smpls(uhd::time_spec_t timespec) const |
| 938 | { |
| 939 | return avail_smpls(convert_time(timespec, clk_rt)); |
| 940 | } |
| 941 | |
| 942 | ssize_t smpl_buf::read(void *buf, size_t len, TIMESTAMP timestamp) |
| 943 | { |
kurtis.heimerl | 1979c6f | 2011-11-26 03:18:24 +0000 | [diff] [blame] | 944 | int type_sz = 2 * sizeof(short); |
| 945 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 946 | // Check for valid read |
| 947 | if (timestamp < time_start) |
| 948 | return ERROR_TIMESTAMP; |
| 949 | if (timestamp >= time_end) |
| 950 | return 0; |
| 951 | if (len >= buf_len) |
| 952 | return ERROR_READ; |
| 953 | |
| 954 | // How many samples should be copied |
| 955 | size_t num_smpls = time_end - timestamp; |
kurtis.heimerl | ec842de | 2012-11-23 08:37:32 +0000 | [diff] [blame] | 956 | if (num_smpls > len) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 957 | num_smpls = len; |
| 958 | |
| 959 | // Starting index |
| 960 | size_t read_start = data_start + (timestamp - time_start); |
| 961 | |
| 962 | // Read it |
| 963 | if (read_start + num_smpls < buf_len) { |
kurtis.heimerl | 1979c6f | 2011-11-26 03:18:24 +0000 | [diff] [blame] | 964 | size_t numBytes = len * type_sz; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 965 | memcpy(buf, data + read_start, numBytes); |
| 966 | } else { |
kurtis.heimerl | 1979c6f | 2011-11-26 03:18:24 +0000 | [diff] [blame] | 967 | size_t first_cp = (buf_len - read_start) * type_sz; |
| 968 | size_t second_cp = len * type_sz - first_cp; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 969 | |
| 970 | memcpy(buf, data + read_start, first_cp); |
| 971 | memcpy((char*) buf + first_cp, data, second_cp); |
| 972 | } |
| 973 | |
| 974 | data_start = (read_start + len) % buf_len; |
| 975 | time_start = timestamp + len; |
| 976 | |
| 977 | if (time_start > time_end) |
| 978 | return ERROR_READ; |
| 979 | else |
| 980 | return num_smpls; |
| 981 | } |
| 982 | |
| 983 | ssize_t smpl_buf::read(void *buf, size_t len, uhd::time_spec_t ts) |
| 984 | { |
| 985 | return read(buf, len, convert_time(ts, clk_rt)); |
| 986 | } |
| 987 | |
| 988 | ssize_t smpl_buf::write(void *buf, size_t len, TIMESTAMP timestamp) |
| 989 | { |
kurtis.heimerl | 1979c6f | 2011-11-26 03:18:24 +0000 | [diff] [blame] | 990 | int type_sz = 2 * sizeof(short); |
| 991 | |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 992 | // Check for valid write |
| 993 | if ((len == 0) || (len >= buf_len)) |
| 994 | return ERROR_WRITE; |
| 995 | if ((timestamp + len) <= time_end) |
| 996 | return ERROR_TIMESTAMP; |
| 997 | |
| 998 | // Starting index |
| 999 | size_t write_start = (data_start + (timestamp - time_start)) % buf_len; |
| 1000 | |
| 1001 | // Write it |
| 1002 | if ((write_start + len) < buf_len) { |
kurtis.heimerl | 1979c6f | 2011-11-26 03:18:24 +0000 | [diff] [blame] | 1003 | size_t numBytes = len * type_sz; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 1004 | memcpy(data + write_start, buf, numBytes); |
| 1005 | } else { |
kurtis.heimerl | 1979c6f | 2011-11-26 03:18:24 +0000 | [diff] [blame] | 1006 | size_t first_cp = (buf_len - write_start) * type_sz; |
| 1007 | size_t second_cp = len * type_sz - first_cp; |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 1008 | |
| 1009 | memcpy(data + write_start, buf, first_cp); |
| 1010 | memcpy(data, (char*) buf + first_cp, second_cp); |
| 1011 | } |
| 1012 | |
| 1013 | data_end = (write_start + len) % buf_len; |
| 1014 | time_end = timestamp + len; |
| 1015 | |
| 1016 | if (((write_start + len) > buf_len) && (data_end > data_start)) |
| 1017 | return ERROR_OVERFLOW; |
| 1018 | else if (time_end <= time_start) |
| 1019 | return ERROR_WRITE; |
| 1020 | else |
| 1021 | return len; |
| 1022 | } |
| 1023 | |
| 1024 | ssize_t smpl_buf::write(void *buf, size_t len, uhd::time_spec_t ts) |
| 1025 | { |
| 1026 | return write(buf, len, convert_time(ts, clk_rt)); |
| 1027 | } |
| 1028 | |
| 1029 | std::string smpl_buf::str_status() const |
| 1030 | { |
| 1031 | std::ostringstream ost("Sample buffer: "); |
| 1032 | |
| 1033 | ost << "length = " << buf_len; |
| 1034 | ost << ", time_start = " << time_start; |
| 1035 | ost << ", time_end = " << time_end; |
| 1036 | ost << ", data_start = " << data_start; |
| 1037 | ost << ", data_end = " << data_end; |
| 1038 | |
| 1039 | return ost.str(); |
| 1040 | } |
| 1041 | |
| 1042 | std::string smpl_buf::str_code(ssize_t code) |
| 1043 | { |
| 1044 | switch (code) { |
| 1045 | case ERROR_TIMESTAMP: |
| 1046 | return "Sample buffer: Requested timestamp is not valid"; |
| 1047 | case ERROR_READ: |
| 1048 | return "Sample buffer: Read error"; |
| 1049 | case ERROR_WRITE: |
| 1050 | return "Sample buffer: Write error"; |
| 1051 | case ERROR_OVERFLOW: |
| 1052 | return "Sample buffer: Overrun"; |
| 1053 | default: |
| 1054 | return "Sample buffer: Unknown error"; |
| 1055 | } |
| 1056 | } |
| 1057 | |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 1058 | RadioDevice *RadioDevice::make(int sps, bool skip_rx) |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 1059 | { |
Thomas Tsou | cb69f08 | 2013-04-08 14:18:26 -0400 | [diff] [blame^] | 1060 | return new uhd_device(sps, skip_rx); |
kurtis.heimerl | 965e757 | 2011-11-26 03:16:54 +0000 | [diff] [blame] | 1061 | } |