void base_free() {
pbch_free(&pbch);
lte_ifft_free(&ifft);
if (slot_buffer) {
free(slot_buffer);
}
if (output_buffer) {
free(output_buffer);
}
if (output_file_name) {
filesink_free(&fsink);
} else {
#ifndef DISABLE_UHD
cuhd_close(&uhd);
#endif
}
}
void base_free() {
pdsch_harq_free(&harq_process);
pdsch_free(&pdsch);
pdcch_free(&pdcch);
regs_free(®s);
pbch_free(&pbch);
lte_ifft_free(&ifft);
if (sf_buffer) {
free(sf_buffer);
}
if (output_buffer) {
free(output_buffer);
}
if (output_file_name) {
filesink_free(&fsink);
} else {
#ifndef DISABLE_UHD
cuhd_close(&uhd);
#endif
}
}
int main(int argc, char **argv) {
int N_id_2, ns, find_ns;
cf_t *buffer, *fft_buffer;
cf_t pss_signal[PSS_LEN];
float sss_signal0[SSS_LEN]; // for subframe 0
float sss_signal5[SSS_LEN]; // for subframe 5
int cid, max_cid;
uint32_t find_idx;
sync_t sync;
lte_fft_t ifft;
parse_args(argc, argv);
buffer = malloc(sizeof(cf_t) * FLEN);
if (!buffer) {
perror("malloc");
exit(-1);
}
fft_buffer = malloc(sizeof(cf_t) * 2 * FLEN);
if (!fft_buffer) {
perror("malloc");
exit(-1);
}
if (lte_ifft_init(&ifft, cp, 6)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
if (sync_init(&sync, FLEN, 128, 128)) {
fprintf(stderr, "Error initiating PSS/SSS\n");
return -1;
}
sync_set_threshold(&sync, 1, 1);
if (cell_id == -1) {
cid = 0;
max_cid = 49;
} else {
cid = cell_id;
max_cid = cell_id;
}
while(cid <= max_cid) {
N_id_2 = cid%3;
/* Generate PSS/SSS signals */
pss_generate(pss_signal, N_id_2);
sss_generate(sss_signal0, sss_signal5, cid);
for (ns=0;ns<2;ns++) {
memset(buffer, 0, sizeof(cf_t) * FLEN);
pss_put_slot(pss_signal, buffer, 6, cp);
sss_put_slot(ns?sss_signal5:sss_signal0, buffer, 6, cp);
/* Transform to OFDM symbols */
memset(fft_buffer, 0, sizeof(cf_t) * 2 * FLEN);
lte_ifft_run_slot(&ifft, buffer, &fft_buffer[offset]);
sync_find(&sync, fft_buffer, &find_idx);
find_ns = sync_get_slot_id(&sync);
printf("cell_id: %d find: %d, offset: %d, ns=%d find_ns=%d\n", cid, find_idx, offset,
ns, find_ns);
if (find_idx != offset + 960) {
printf("offset != find_offset: %d != %d\n", find_idx, offset + 960);
exit(-1);
}
if (ns*10 != find_ns) {
printf("ns != find_ns\n", 10 * ns, find_ns);
exit(-1);
}
if (sync_get_cp(&sync) != cp) {
printf("Detected CP should be %s\n", CP_ISNORM(cp)?"Normal":"Extended");
exit(-1);
}
}
cid++;
}
free(fft_buffer);
free(buffer);
sync_free(&sync);
lte_ifft_free(&ifft);
printf("Ok\n");
exit(0);
}