SDR: Add option to enable TX timestamps on UHD devices (disabled by default)
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@ -79,6 +79,7 @@ const char *write_iq_rx_wave = NULL;
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const char *read_iq_tx_wave = NULL;
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const char *read_iq_rx_wave = NULL;
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int sdr_swap_links = 0;
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int sdr_uhd_tx_timestamps = 0;
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void print_help_common(const char *arg0, const char *ext_usage)
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{
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@ -183,6 +184,10 @@ void print_help_common(const char *arg0, const char *ext_usage)
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printf(" Replace transmitted IQ data by given wave file.\n");
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printf(" --sdr-swap-links\n");
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printf(" Swap RX and TX frequencies for loopback tests over the air.r\n");
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#ifdef HAVE_UHD
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printf(" --sdr-uhd-tx-timestamps\n");
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printf(" Use TX timestamps on UHD device. (May not work with some devices!)\n");
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#endif
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#endif
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printf("\nNetwork specific options:\n");
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}
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@ -225,6 +230,7 @@ void print_hotkeys_common(void)
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#define OPT_READ_IQ_RX_WAVE 1114
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#define OPT_READ_IQ_TX_WAVE 1115
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#define OPT_SDR_SWAP_LINKS 1116
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#define OPT_SDR_UHD_TX_TS 1117
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static struct option long_options_common[] = {
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{"help", 0, 0, 'h'},
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@ -266,6 +272,7 @@ static struct option long_options_common[] = {
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{"read-iq-rx-wave", 1, 0, OPT_READ_IQ_RX_WAVE},
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{"read-iq-tx-wave", 1, 0, OPT_READ_IQ_TX_WAVE},
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{"sdr-swap-links", 0, 0, OPT_SDR_SWAP_LINKS},
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{"sdr-uhd-tx-timestamps", 0, 0, OPT_SDR_UHD_TX_TS},
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{0, 0, 0, 0}
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};
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@ -497,6 +504,10 @@ void opt_switch_common(int c, char *arg0, int *skip_args)
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sdr_swap_links = 1;
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*skip_args += 1;
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break;
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case OPT_SDR_UHD_TX_TS:
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sdr_uhd_tx_timestamps = 1;
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*skip_args += 1;
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break;
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default:
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exit (0);
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}
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@ -580,7 +591,7 @@ void main_common(int *quit, int latency, int interval, void (*myhandler)(void),
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sdr_samplerate = samplerate;
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if (sdr_bandwidth == 0.0)
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sdr_bandwidth = sdr_samplerate;
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rc = sdr_init(sdr_uhd, sdr_soapy, sdr_channel, sdr_device_args, sdr_stream_args, sdr_tune_args, sdr_tx_antenna, sdr_rx_antenna, sdr_tx_gain, sdr_rx_gain, sdr_samplerate, sdr_bandwidth, write_iq_tx_wave, write_iq_rx_wave, read_iq_tx_wave, read_iq_rx_wave, latspl, sdr_swap_links);
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rc = sdr_init(sdr_uhd, sdr_soapy, sdr_channel, sdr_device_args, sdr_stream_args, sdr_tune_args, sdr_tx_antenna, sdr_rx_antenna, sdr_tx_gain, sdr_rx_gain, sdr_samplerate, sdr_bandwidth, write_iq_tx_wave, write_iq_rx_wave, read_iq_tx_wave, read_iq_rx_wave, latspl, sdr_swap_links, sdr_uhd_tx_timestamps);
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if (rc < 0)
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return;
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#endif
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@ -85,8 +85,9 @@ static int sdr_latspl;
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static int sdr_threads;
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static sdr_thread_t sdr_thread_read, sdr_thread_write;
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static int sdr_swap_links;
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static int sdr_uhd_tx_timestamps;
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int sdr_init(int sdr_uhd, int sdr_soapy, int channel, const char *device_args, const char *stream_args, const char *tune_args, const char *tx_antenna, const char *rx_antenna, double tx_gain, double rx_gain, int samplerate, double bandwidth, const char *write_iq_tx_wave, const char *write_iq_rx_wave, const char *read_iq_tx_wave, const char *read_iq_rx_wave, int latspl, int swap_links)
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int sdr_init(int sdr_uhd, int sdr_soapy, int channel, const char *device_args, const char *stream_args, const char *tune_args, const char *tx_antenna, const char *rx_antenna, double tx_gain, double rx_gain, int samplerate, double bandwidth, const char *write_iq_tx_wave, const char *write_iq_rx_wave, const char *read_iq_tx_wave, const char *read_iq_rx_wave, int latspl, int swap_links, int uhd_tx_timestamps)
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{
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PDEBUG(DSDR, DEBUG_DEBUG, "Init SDR\n");
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@ -110,6 +111,7 @@ int sdr_init(int sdr_uhd, int sdr_soapy, int channel, const char *device_args, c
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sdr_oversample = 1;
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sdr_latspl = latspl;
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sdr_swap_links = swap_links;
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sdr_uhd_tx_timestamps = uhd_tx_timestamps;
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return 0;
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}
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@ -326,7 +328,7 @@ void *sdr_open(const char __attribute__((__unused__)) *audiodev, double *tx_freq
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#ifdef HAVE_UHD
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if (sdr_use_uhd) {
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rc = uhd_open(sdr_channel, sdr_device_args, sdr_stream_args, sdr_tune_args, sdr_tx_antenna, sdr_rx_antenna, tx_center_frequency, rx_center_frequency, sdr_samplerate, sdr_tx_gain, sdr_rx_gain, sdr_bandwidth);
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rc = uhd_open(sdr_channel, sdr_device_args, sdr_stream_args, sdr_tune_args, sdr_tx_antenna, sdr_rx_antenna, tx_center_frequency, rx_center_frequency, sdr_samplerate, sdr_tx_gain, sdr_rx_gain, sdr_bandwidth, sdr_uhd_tx_timestamps);
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if (rc)
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goto error;
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}
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@ -1,5 +1,5 @@
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int sdr_init(int sdr_uhd, int sdr_soapy, int channel, const char *device_args, const char *stream_args, const char *tune_args, const char *tx_antenna, const char *rx_antenna, double tx_gain, double rx_gain, int samplerate, double bandwidth, const char *write_iq_tx_wave, const char *write_iq_rx_wave, const char *read_iq_tx_wave, const char *read_iq_rx_wave, int latspl, int swap_links);
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int sdr_init(int sdr_uhd, int sdr_soapy, int channel, const char *device_args, const char *stream_args, const char *tune_args, const char *tx_antenna, const char *rx_antenna, double tx_gain, double rx_gain, int samplerate, double bandwidth, const char *write_iq_tx_wave, const char *write_iq_rx_wave, const char *read_iq_tx_wave, const char *read_iq_rx_wave, int latspl, int swap_links, int uhd_tx_timestamps);
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int sdr_start(void *inst);
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void *sdr_open(const char *audiodev, double *tx_frequency, double *rx_frequency, int channels, double paging_frequency, int samplerate, double bandwidth, double sample_deviation);
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void sdr_close(void *inst);
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@ -388,7 +388,7 @@ int soapy_send(float *buff, int num)
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buffs_ptr[0] = buff;
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count = SoapySDRDevice_writeStream(sdr, txStream, buffs_ptr, chunk, &flags, 0, 1000000);
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if (count <= 0) {
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PDEBUG(DUHD, DEBUG_ERROR, "Failed to write to TX streamr (error=%d)\n", count);
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PDEBUG(DUHD, DEBUG_ERROR, "Failed to write to TX streamer (error=%d)\n", count);
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break;
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}
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@ -27,6 +27,9 @@
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#include "uhd.h"
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#include "debug.h"
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/* use to TX time stamp */
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//#define TX_TIMESTAMP
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static uhd_usrp_handle usrp = NULL;
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static uhd_tx_streamer_handle tx_streamer = NULL;
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static uhd_rx_streamer_handle rx_streamer = NULL;
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@ -42,14 +45,16 @@ static time_t rx_time_secs = 0;
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static double rx_time_fract_sec = 0.0;
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static time_t tx_time_secs = 0;
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static double tx_time_fract_sec = 0.0;
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static int tx_timestamps;
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int uhd_open(size_t channel, const char *_device_args, const char *_stream_args, const char *_tune_args, const char *tx_antenna, const char *rx_antenna, double tx_frequency, double rx_frequency, double rate, double tx_gain, double rx_gain, double bandwidth)
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int uhd_open(size_t channel, const char *_device_args, const char *_stream_args, const char *_tune_args, const char *tx_antenna, const char *rx_antenna, double tx_frequency, double rx_frequency, double rate, double tx_gain, double rx_gain, double bandwidth, int _tx_timestamps)
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{
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uhd_error error;
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double got_frequency, got_rate, got_gain, got_bandwidth;
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char got_antenna[64];
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samplerate = rate;
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tx_timestamps = _tx_timestamps;
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PDEBUG(DUHD, DEBUG_INFO, "Using device args \"%s\"\n", _device_args);
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PDEBUG(DUHD, DEBUG_INFO, "Using stream args \"%s\"\n", _stream_args);
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@ -472,7 +477,10 @@ int uhd_send(float *buff, int num)
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if (chunk > (int)tx_samps_per_buff)
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chunk = (int)tx_samps_per_buff;
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/* create tx metadata */
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error = uhd_tx_metadata_make(&tx_metadata, true, tx_time_secs, tx_time_fract_sec, true, false);
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if (tx_timestamps)
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error = uhd_tx_metadata_make(&tx_metadata, true, tx_time_secs, tx_time_fract_sec, false, false);
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else
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error = uhd_tx_metadata_make(&tx_metadata, false, 0, 0.0, false, false);
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if (error)
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PDEBUG(DUHD, DEBUG_ERROR, "Failed to create TX metadata\n");
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buffs_ptr[0] = buff;
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@ -551,10 +559,13 @@ int uhd_get_tosend(int latspl)
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/* if we have not yet sent any data, we set initial tx time stamp */
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if (tx_time_secs == 0 && tx_time_fract_sec == 0.0) {
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tx_time_secs = rx_time_secs;
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tx_time_fract_sec = rx_time_fract_sec + (double)latspl / samplerate;
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if (tx_time_fract_sec >= 1.0) {
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tx_time_fract_sec -= 1.0;
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tx_time_secs++;
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tx_time_fract_sec = rx_time_fract_sec;
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if (tx_timestamps) {
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tx_time_fract_sec += (double)latspl / samplerate;
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if (tx_time_fract_sec >= 1.0) {
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tx_time_fract_sec -= 1.0;
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tx_time_secs++;
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}
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}
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}
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@ -1,5 +1,5 @@
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int uhd_open(size_t channel, const char *_device_args, const char *_stream_args, const char *_tune_args, const char *tx_antenna, const char *rx_antenna, double tx_frequency, double rx_frequency, double rate, double tx_gain, double rx_gain, double bandwidth);
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int uhd_open(size_t channel, const char *_device_args, const char *_stream_args, const char *_tune_args, const char *tx_antenna, const char *rx_antenna, double tx_frequency, double rx_frequency, double rate, double tx_gain, double rx_gain, double bandwidth, int _tx_timestamps);
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int uhd_start(void);
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void uhd_close(void);
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int uhd_send(float *buff, int num);
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