Fixed sync test
This commit is contained in:
parent
0e8421e76c
commit
7956e04dcc
2 changed files with 38 additions and 15 deletions
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@ -40,23 +40,26 @@
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uint32_t nof_prb = 25;
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uint32_t nof_frames = 20;
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float tone_offset_hz = 0;
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float uhd_rx_gain=40, uhd_tx_gain=40, uhd_freq=2.4e9;
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char *uhd_args="";
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char *output_filename = NULL;
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char *input_filename = NULL;
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void usage(char *prog) {
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printf("Usage: %s -i [tx_signal_file] -o [rx_signal_file]\n", prog);
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printf("Usage: %s -o [rx_signal_file]\n", prog);
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printf("\t-a UHD args [Default %s]\n", uhd_args);
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printf("\t-f UHD TX/RX frequency [Default %.2f MHz]\n", uhd_freq/1e6);
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printf("\t-g UHD RX gain [Default %.1f dB]\n", uhd_rx_gain);
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printf("\t-G UHD TX gain [Default %.1f dB]\n", uhd_tx_gain);
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printf("\t-t Single tone offset (Hz) [Default %f]\n", tone_offset_hz);
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printf("\t-i File name to read signal from [Default single tone]\n");
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printf("\t-p Number of UL RB [Default %d]\n", nof_prb);
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}
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void parse_args(int argc, char **argv) {
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int opt;
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while ((opt = getopt(argc, argv, "ioafgp")) != -1) {
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while ((opt = getopt(argc, argv, "ioafgpt")) != -1) {
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switch (opt) {
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case 'a':
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uhd_args = argv[optind];
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@ -67,6 +70,9 @@ void parse_args(int argc, char **argv) {
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case 'i':
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input_filename = argv[optind];
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break;
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case 't':
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tone_offset_hz = atof(argv[optind]);
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break;
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case 'f':
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uhd_freq = atof(argv[optind]);
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break;
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@ -88,7 +94,7 @@ void parse_args(int argc, char **argv) {
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exit(-1);
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}
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}
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if (!input_filename || !output_filename) {
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if (!output_filename) {
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usage(argv[0]);
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exit(-1);
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}
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@ -127,17 +133,33 @@ int main(int argc, char **argv) {
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exit(-1);
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}
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cuhd_set_master_clock_rate(uhd, 30.72e6);
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int srate = srslte_sampling_freq_hz(nof_prb);
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if (srate < 10e6) {
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cuhd_set_master_clock_rate(uhd, 4*srate);
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} else {
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cuhd_set_master_clock_rate(uhd, srate);
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}
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cuhd_set_rx_srate(uhd, (double) srate);
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cuhd_set_tx_srate(uhd, (double) srate);
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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 rate: %.2f MHz\n", (float) srate / 1000000);
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printf("Set RX gain: %.1f dB\n", cuhd_set_rx_gain(uhd, uhd_rx_gain));
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printf("Set TX gain: %.1f dB\n", cuhd_set_tx_gain(uhd, uhd_tx_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_freq_offset(uhd, uhd_freq, 8e6);
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sleep(1);
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srslte_vec_load_file(input_filename, &tx_buffer[nsamples_adv], flen*sizeof(cf_t));
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if (input_filename) {
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srslte_vec_load_file(input_filename, &tx_buffer[nsamples_adv], flen*sizeof(cf_t));
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} else {
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for (int i=0;i<flen-nsamples_adv;i++) {
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tx_buffer[i+nsamples_adv] = cexpf(_Complex_I*2*M_PI*tone_offset_hz*(float) i/(float) srate);
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}
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srslte_vec_save_file("uhd_txrx_tone", tx_buffer, flen*sizeof(cf_t));
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}
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srslte_timestamp_t tstamp;
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@ -79,7 +79,7 @@ void parse_args(int argc, char **argv) {
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}
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int main(int argc, char **argv) {
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int N_id_2, ns, find_ns;
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int N_id_2, sf_idx, find_sf;
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cf_t *buffer, *fft_buffer;
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cf_t pss_signal[SRSLTE_PSS_LEN];
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float sss_signal0[SRSLTE_SSS_LEN]; // for subframe 0
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@ -104,7 +104,7 @@ int main(int argc, char **argv) {
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exit(-1);
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}
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fft_buffer = malloc(sizeof(cf_t) * FLEN);
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fft_buffer = malloc(sizeof(cf_t) * FLEN * 2);
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if (!fft_buffer) {
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perror("malloc");
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exit(-1);
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@ -142,28 +142,29 @@ int main(int argc, char **argv) {
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srslte_sync_set_N_id_2(&sync, N_id_2);
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for (ns=0;ns<2;ns++) {
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// SF1 is SF5
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for (sf_idx=0;sf_idx<2;sf_idx++) {
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memset(buffer, 0, sizeof(cf_t) * FLEN);
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srslte_pss_put_slot(pss_signal, buffer, nof_prb, cp);
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srslte_sss_put_slot(ns?sss_signal5:sss_signal0, buffer, nof_prb, cp);
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srslte_sss_put_slot(sf_idx?sss_signal5:sss_signal0, buffer, nof_prb, cp);
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/* Transform to OFDM symbols */
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memset(fft_buffer, 0, sizeof(cf_t) * FLEN);
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srslte_ofdm_tx_slot(&ifft, buffer, &fft_buffer[offset]);
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srslte_ofdm_tx_sf(&ifft, buffer, &fft_buffer[offset]);
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if (srslte_sync_find(&sync, fft_buffer, 0, &find_idx) < 0) {
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fprintf(stderr, "Error running srslte_sync_find\n");
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exit(-1);
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}
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find_ns = 2*srslte_sync_get_sf_idx(&sync);
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find_sf = srslte_sync_get_sf_idx(&sync);
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printf("cell_id: %d find: %d, offset: %d, ns=%d find_ns=%d\n", cid, find_idx, offset,
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ns, find_ns);
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sf_idx, find_sf);
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if (find_idx != offset + FLEN/2) {
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printf("offset != find_offset: %d != %d\n", find_idx, offset + FLEN/2);
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exit(-1);
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}
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if (ns*10 != find_ns) {
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printf("ns != find_ns\n", 10 * ns, find_ns);
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if (sf_idx*5 != find_sf) {
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printf("ns != find_ns\n");
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exit(-1);
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}
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if (srslte_sync_get_cp(&sync) != cp) {
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