C++ (Cpp) iodev_isfile Examples

Example #1

File: iodev.c Project: SPLURGE831/libLTE

uint32_t iodev_get_sfidx(iodev_t *q) {
  if (iodev_isfile(q)) {
    return q->sf_idx;
  } else {
    return ue_sync_get_sfidx(&q->sframe);
  }
}

Example #2

File: pdsch_ue.c Project: marojevic/libLTE

int main(int argc, char **argv) {
  int ret; 
  cf_t *sf_buffer; 
  iodev_t iodev; 
  prog_args_t prog_args; 
  lte_cell_t cell; 
  ue_dl_t ue_dl; 
  bool ue_dl_initiated = false; 
  int64_t sf_cnt;
  uint32_t sf_idx;
  pbch_mib_t mib; 
  bool printed_sib = false; 
  uint32_t rlen; 
  
  parse_args(&prog_args, argc, argv);
  
  if (iodev_init(&iodev, &prog_args.io_config)) {
    fprintf(stderr, "Error initiating input device\n");
    exit(-1);
  }
  
#ifndef DISABLE_GRAPHICS
  if (!prog_args.disable_plots) {
    init_plots();    
  }
#endif
  
  /* Setup SIGINT handler */
  printf("\n --- Press Ctrl+C to exit --- \n");
  signal(SIGINT, sigintHandler);

  /* Initialize frame and subframe counters */
  sf_cnt = 0;
  sf_idx = 0; 
  
  /* Main loop */
  while (!go_exit && (sf_cnt < prog_args.nof_subframes || prog_args.nof_subframes == -1)) {

    ret = iodev_receive(&iodev, &sf_buffer);
    if (ret < 0) {
      fprintf(stderr, "Error reading from input device (%d)\n", ret);
      break;
    }
    
    /* iodev_receive returns 1 if successfully read 1 aligned subframe */
    if (ret == 1) {
      if (!ue_dl_initiated) {
        if (iodev_isUSRP(&iodev)) {
          cell = ue_sync_get_cell(&iodev.sframe);
          mib = ue_sync_get_mib(&iodev.sframe);
        } else {
          cell.id = prog_args.cell_id_file;
          cell.cp = CPNORM; 
          cell.nof_ports = 1; // TODO: Use prog_args 
          cell.nof_prb = prog_args.nof_prb_file; 
          mib.phich_resources = R_1; 
          mib.phich_length = PHICH_NORM;
        }        
        if (ue_dl_init(&ue_dl, cell, mib.phich_resources, mib.phich_length, 1234)) { 
          fprintf(stderr, "Error initiating UE downlink processing module\n");
          exit(-1);
        }
        pdsch_set_rnti(&ue_dl.pdsch, prog_args.rnti);
        ue_dl_initiated = true; 
      } else {
        if (iodev_isUSRP(&iodev)) {
          sf_idx = ue_sync_get_sfidx(&iodev.sframe);
        } 
        rlen = ue_dl_receive(&ue_dl, sf_buffer, data, sf_idx, ue_sync_get_mib(&iodev.sframe).sfn, prog_args.rnti);
        if (rlen < 0) {
          fprintf(stderr, "\nError running receiver\n");fflush(stdout);
          exit(-1);
        }
        if (prog_args.rnti == SIRNTI && !printed_sib && rlen > 0) {
          printf("\n\nDecoded SIB1 Message: ");
          vec_fprint_hex(stdout, data, rlen);
          printf("\n");fflush(stdout);
          printed_sib = true; 
        }
        if (!(sf_cnt % 10)) {         
          printf("Cell ID: %3d, RSSI: %+.2f dBm, CFO: %+.4f KHz, SFO: %+.4f Khz, TimeOffset: %4d, Errors: %4d/%4d, BLER: %.1e\r",
              cell.id, 20*log10f(agc_get_rssi(&iodev.sframe.agc)), iodev.sframe.cur_cfo * 15, iodev.sframe.mean_time_offset / 5, iodev.sframe.peak_idx,
              (int) ue_dl.pkt_errors, (int) ue_dl.pkts_total, (float) ue_dl.pkt_errors / ue_dl.pkts_total);
          fflush(stdout);       
          if (VERBOSE_ISINFO()) {
            printf("\n");
          }
        }  
        #ifndef DISABLE_GRAPHICS
        if (!prog_args.disable_plots && sf_idx == 5) {
          do_plots(&ue_dl, sf_idx);          
        }
        #endif
      }
      if (iodev_isfile(&iodev)) {
        sf_idx++;       
        if (sf_idx == NSUBFRAMES_X_FRAME) {
          sf_idx = 0;
        }        
      }
    }
    if (prog_args.nof_subframes > 0) {
      sf_cnt++;      
    }    
    if (iodev_isfile(&iodev)) {
      usleep(5000);
    }
  }

  if (ue_dl_initiated) {
    ue_dl_free(&ue_dl);    
  }
  iodev_free(&iodev);

  printf("\nBye\n");
  exit(0);
}