mirror of https://github.com/PentHertz/srsLTE.git
Added LO offset
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104efa35ff
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93e98cd214
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@ -116,7 +116,8 @@ void radio_uhd::set_rx_srate(float srate)
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void radio_uhd::set_tx_freq(float freq)
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{
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cuhd_set_tx_freq(uhd, freq);
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//cuhd_set_tx_freq(uhd, freq);
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cuhd_set_tx_freq_offset(uhd, freq, 8e6);
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}
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void radio_uhd::set_tx_gain(float gain)
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@ -162,7 +162,7 @@ int cuhd_open_(char *args, void **h, bool create_thread_gain, bool tx_gain_same_
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{
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cuhd_handler *handler = new cuhd_handler();
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std::string _args = std::string(args);
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handler->usrp = uhd::usrp::multi_usrp::make(_args + ", master_clock_rate=30720000, num_recv_frames=512");
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handler->usrp = uhd::usrp::multi_usrp::make(_args);// + ", master_clock_rate=30720000, num_recv_frames=512");
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// handler->usrp = uhd::usrp::multi_usrp::make(_args + ", master_clock_rate=50000000" + ", num_recv_frames=512");
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handler->usrp->set_clock_source("internal");
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@ -149,12 +149,12 @@ int main(int argc, char **argv) {
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}
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printf("Subframe len: %d samples\n", flen);
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printf("Set TX/RX rate: %.2f MHz\n", cuhd_set_rx_srate(uhd, srslte_sampling_freq_hz(nof_prb)) / 1000000);
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printf("Set TX/RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_gain));
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printf("Set RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_gain));
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printf("Set TX gain: %.1f dB\n", cuhd_set_tx_gain(uhd, uhd_gain));
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printf("Set TX/RX freq: %.2f MHz\n", cuhd_set_rx_freq(uhd, uhd_freq) / 1000000);
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cuhd_set_tx_srate(uhd, srslte_sampling_freq_hz(nof_prb));
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cuhd_set_tx_gain(uhd, uhd_gain);
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cuhd_set_tx_freq(uhd, uhd_freq);
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cuhd_rx_wait_lo_locked(uhd);
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cuhd_set_tx_freq_offset(uhd, uhd_freq, 8e6);
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sleep(1);
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cf_t *zeros = calloc(sizeof(cf_t),flen);
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@ -167,21 +167,25 @@ int main(int argc, char **argv) {
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cuhd_start_rx_stream(uhd);
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uint32_t nframe=0;
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while(nframe<nof_frames) {
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printf("Rx subframe %d\n", nframe);
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cuhd_recv_with_time(uhd, &buffer[flen*nframe], flen, true, &tstamp.full_secs, &tstamp.frac_secs);
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nframe++;
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if (nframe==9 || nframe==8) {
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if (nframe==9 || nframe==8 || nframe==10) {
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srslte_timestamp_add(&tstamp, 0, 2e-3);
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if (nframe==8) {
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cuhd_send_timed2(uhd, zeros, flen, tstamp.full_secs, tstamp.frac_secs, true, false);
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printf("Transmitting zeros\n");
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} else {
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cuhd_send_timed2(uhd, preamble, flen, tstamp.full_secs, tstamp.frac_secs, false, true);
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} else if (nframe == 9) {
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cuhd_send_timed2(uhd, preamble, flen, tstamp.full_secs, tstamp.frac_secs, false, false);
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printf("Transmitting PRACH\n");
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} else {
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cuhd_send_timed2(uhd, zeros, flen, tstamp.full_secs, tstamp.frac_secs, false, true);
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printf("Transmitting zeros\n");
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}
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}
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printf("Rx subframe %d\n", nframe);
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}
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if (f) {
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fwrite(&buffer[10*flen], flen*sizeof(cf_t), 1, f);
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