diff --git a/lib/examples/pssch_ue.c b/lib/examples/pssch_ue.c index 327671d40..01d028f16 100644 --- a/lib/examples/pssch_ue.c +++ b/lib/examples/pssch_ue.c @@ -43,7 +43,7 @@ #define PCAP_FILENAME "/tmp/pssch.pcap" -static bool keep_running = true; +static bool keep_running = true; static srslte_cell_sl_t cell_sl = {.nof_prb = 50, .tm = SRSLTE_SIDELINK_TM4, .cp = SRSLTE_CP_NORM, .N_sl_id = 0}; @@ -52,7 +52,7 @@ typedef struct { bool disable_plots; char* input_file_name; uint32_t file_start_sf_idx; - uint32_t nof_ports; + uint32_t nof_rx_antennas; char* rf_dev; char* rf_args; double rf_freq; @@ -69,14 +69,12 @@ void args_default(prog_args_t* args) args->use_standard_lte_rates = false; args->input_file_name = NULL; args->file_start_sf_idx = 0; - args->nof_ports = 1; + args->nof_rx_antennas = 1; args->rf_dev = ""; - args->rf_args = ""; args->rf_dev = ""; args->rf_args = ""; - args->rf_freq = 5.92e6; + args->rf_freq = 5.92e9; args->rf_gain = 50; - args->nof_ports = 1; args->size_sub_channel = 10; args->num_sub_channel = 5; } @@ -94,7 +92,7 @@ static srslte_filesource_t fsrc = {}; #ifdef ENABLE_GUI #include "srsgui/srsgui.h" -void init_plots(); +void init_plots(); static pthread_t plot_thread; static sem_t plot_sem; #endif // ENABLE_GUI @@ -136,13 +134,13 @@ void pcap_pack_and_write(FILE* pcap_file, void usage(prog_args_t* args, char* prog) { - printf("Usage: %s [agrnv] -f rx_frequency_hz\n", prog); + printf("Usage: %s [agrnmv] -f rx_frequency_hz\n", prog); printf("\t-a RF args [Default %s]\n", args->rf_args); printf("\t-d RF devicename [Default %s]\n", args->rf_dev); printf("\t-i input_file_name\n"); - printf("\t-s Start subframe_idx [Default %d]\n", args->file_start_sf_idx); + printf("\t-m Start subframe_idx [Default %d]\n", args->file_start_sf_idx); printf("\t-g RF Gain [Default %.2f dB]\n", args->rf_gain); - printf("\t-A nof_rx_antennas [Default %d]\n", args->nof_ports); + printf("\t-A nof_rx_antennas [Default %d]\n", args->nof_rx_antennas); printf("\t-c N_sl_id [Default %d]\n", cell_sl.N_sl_id); printf("\t-p nof_prb [Default %d]\n", cell_sl.nof_prb); printf("\t-s size_sub_channel [Default for 50 prbs %d]\n", args->size_sub_channel); @@ -187,7 +185,7 @@ void parse_args(prog_args_t* args, int argc, char** argv) args->rf_freq = strtof(argv[optind], NULL); break; case 'A': - args->nof_ports = (int32_t)strtol(argv[optind], NULL, 10); + args->nof_rx_antennas = (int32_t)strtol(argv[optind], NULL, 10); break; case 'v': srslte_verbose++; @@ -255,12 +253,13 @@ int main(int argc, char** argv) if (!prog_args.input_file_name) { printf("Opening RF device...\n"); - if (srslte_rf_open_multi(&radio, prog_args.rf_args, prog_args.nof_ports)) { + if (srslte_rf_open_multi(&radio, prog_args.rf_args, prog_args.nof_rx_antennas)) { ERROR("Error opening rf\n"); exit(-1); } - printf("Set RX freq: %.6f MHz\n", srslte_rf_set_rx_freq(&radio, prog_args.nof_ports, prog_args.rf_freq) / 1000000); + printf("Set RX freq: %.6f MHz\n", + srslte_rf_set_rx_freq(&radio, prog_args.nof_rx_antennas, prog_args.rf_freq) / 1e6); printf("Set RX gain: %.1f dB\n", srslte_rf_set_rx_gain(&radio, prog_args.rf_gain)); int srate = srslte_sampling_freq_hz(cell_sl.nof_prb); @@ -283,9 +282,9 @@ int main(int argc, char** argv) printf("Using a SF len of %d samples\n", sf_len); cf_t* rx_buffer[SRSLTE_MAX_CHANNELS] = {}; //< For radio to receive samples - cf_t* sf_buffer[SRSLTE_MAX_PORTS] = {NULL}; ///< For OFDM object to store subframe after FFT + cf_t* sf_buffer[SRSLTE_MAX_PORTS] = {NULL}; ///< For OFDM object to store subframe after FFT - for (int i = 0; i < prog_args.nof_ports; i++) { + for (int i = 0; i < prog_args.nof_rx_antennas; i++) { rx_buffer[i] = srslte_vec_cf_malloc(sf_len); if (!rx_buffer[i]) { perror("malloc"); @@ -310,7 +309,7 @@ int main(int argc, char** argv) ofdm_cfg.normalize = true; ofdm_cfg.sf_type = SRSLTE_SF_NORM; ofdm_cfg.freq_shift_f = -0.5; - for (int i = 0; i < prog_args.nof_ports; i++) { + for (int i = 0; i < prog_args.nof_rx_antennas; i++) { ofdm_cfg.in_buffer = rx_buffer[0]; ofdm_cfg.out_buffer = sf_buffer[0]; @@ -357,30 +356,35 @@ int main(int argc, char** argv) return SRSLTE_ERROR; } - uint8_t tb[SRSLTE_SL_SCH_MAX_TB_LEN] = {}; - uint8_t packed_tb[SRSLTE_SL_SCH_MAX_TB_LEN / 8] = {}; + uint8_t tb[SRSLTE_SL_SCH_MAX_TB_LEN] = {}; + uint8_t packed_tb[SRSLTE_SL_SCH_MAX_TB_LEN / 8] = {}; #ifndef DISABLE_RF srslte_ue_sync_t ue_sync = {}; if (!prog_args.input_file_name) { + srslte_cell_t cell = {}; + cell.nof_prb = cell_sl.nof_prb; + cell.cp = SRSLTE_CP_NORM; + cell.nof_ports = 1; + if (srslte_ue_sync_init_multi_decim_mode(&ue_sync, - SRSLTE_MAX_PRB, + cell.nof_prb, false, srslte_rf_recv_wrapper, - prog_args.nof_ports, + prog_args.nof_rx_antennas, (void*)&radio, - 1.0, + 1, SYNC_MODE_GNSS)) { fprintf(stderr, "Error initiating sync_gnss\n"); exit(-1); } - srslte_cell_t cell = {}; - cell.nof_prb = cell_sl.nof_prb; if (srslte_ue_sync_set_cell(&ue_sync, cell)) { ERROR("Error initiating ue_sync\n"); exit(-1); } + + srslte_rf_start_rx_stream(&radio, false); } #endif @@ -391,17 +395,7 @@ int main(int argc, char** argv) } #endif -#ifndef DISABLE_RF - if (!prog_args.input_file_name) { - // after configuring RF params and before starting streamer, set device to GPS time - srslte_rf_sync(&radio); - - // start streaming - srslte_rf_start_rx_stream(&radio, false); - } -#endif // DISABLE_RF - - uint32_t subframe_count = 0; + uint32_t subframe_count = 0; uint32_t pscch_prb_start_idx = 0; uint32_t current_sf_idx = 0; @@ -430,18 +424,8 @@ int main(int argc, char** argv) ERROR("Error calling srslte_ue_sync_work()\n"); } - if (subframe_count == 0) { - // print timestamp of the first samples - srslte_timestamp_t ts_rx; - srslte_ue_sync_get_last_timestamp(&ue_sync, &ts_rx); - printf("Received samples start at %ld + %.10f. TTI=%d.%d\n", - ts_rx.full_secs, - ts_rx.frac_secs, - srslte_ue_sync_get_sfn(&ue_sync), - srslte_ue_sync_get_sfidx(&ue_sync)); - - current_sf_idx = (srslte_ue_sync_get_sfn(&ue_sync) * 10) + srslte_ue_sync_get_sfidx(&ue_sync); - } + // update SF index + current_sf_idx = srslte_ue_sync_get_sfidx(&ue_sync); #endif // DISABLE_RF } @@ -529,6 +513,10 @@ int main(int argc, char** argv) if (!prog_args.disable_plots) { sem_post(&plot_sem); } + if (prog_args.input_file_name) { + printf("Press Enter to continue ...\n"); + getchar(); + } #endif } } @@ -547,6 +535,7 @@ int main(int argc, char** argv) } } } + current_sf_idx = (current_sf_idx + 1) % 10; subframe_count++; } @@ -580,14 +569,16 @@ clean_exit: srslte_sci_free(&sci); srslte_pscch_free(&pscch); srslte_chest_sl_free(&pscch_chest); + srslte_chest_sl_free(&pssch_chest); - for (int i = 0; i < prog_args.nof_ports; i++) { + for (int i = 0; i < prog_args.nof_rx_antennas; i++) { if (rx_buffer[i]) { free(rx_buffer[i]); } if (sf_buffer[i]) { free(sf_buffer[i]); } + srslte_ofdm_rx_free(&fft[i]); } if (equalized_sf_buffer) {