/* the gateway function */
void mexFunction(int nlhs, mxArray *plhs[], int nrhs, const mxArray *prhs[])
{
srslte_cell_t cell;
srslte_pss_synch_t pss;
cf_t *input_symbols;
int frame_len;
if (nrhs < NOF_INPUTS) {
help();
return;
}
srslte_use_standard_symbol_size(true);
if (mexutils_read_cell(ENBCFG, &cell)) {
help();
return;
}
/* Allocate input buffers */
frame_len = mexutils_read_cf(INPUT, &input_symbols);
if (frame_len < 0) {
mexErrMsgTxt("Error reading input symbols\n");
return;
}
if (nrhs == NOF_INPUTS+1) {
frame_len = (int) mxGetScalar(prhs[NOF_INPUTS]);
}
if (srslte_pss_synch_init_fft(&pss, frame_len, srslte_symbol_sz(cell.nof_prb))) {
fprintf(stderr, "Error initiating PSS\n");
exit(-1);
}
if (srslte_pss_synch_set_N_id_2(&pss, cell.id%3)) {
fprintf(stderr, "Error setting N_id_2=%d\n",cell.id%3);
exit(-1);
}
srslte_pss_synch_set_ema_alpha(&pss, 1.0);
int peak_idx = srslte_pss_synch_find_pss(&pss, input_symbols, NULL);
if (nlhs >= 1) {
plhs[0] = mxCreateDoubleScalar(peak_idx);
}
if (nlhs >= 2) {
mexutils_write_cf(pss.conv_output, &plhs[1], frame_len, 1);
}
srslte_pss_synch_free(&pss);
free(input_symbols);
return;
}
void srslte_sync_set_em_alpha(srslte_sync_t *q, float alpha) {
srslte_pss_synch_set_ema_alpha(&q->pss, alpha);
}
