void base_init() {
/* init memory */
slot_buffer = malloc(sizeof(cf_t) * slot_n_re);
if (!slot_buffer) {
perror("malloc");
exit(-1);
}
output_buffer = malloc(sizeof(cf_t) * slot_n_samples);
if (!output_buffer) {
perror("malloc");
exit(-1);
}
/* open file or USRP */
if (output_file_name) {
if (filesink_init(&fsink, output_file_name, COMPLEX_FLOAT_BIN)) {
fprintf(stderr, "Error opening file %s\n", output_file_name);
exit(-1);
}
} else {
#ifndef DISABLE_UHD
printf("Opening UHD device...\n");
if (cuhd_open(uhd_args,&uhd)) {
fprintf(stderr, "Error opening uhd\n");
exit(-1);
}
#else
printf("Error UHD not available. Select an output file\n");
exit(-1);
#endif
}
/* create ifft object */
if (lte_ifft_init(&ifft, CPNORM, nof_prb)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
if (pbch_init(&pbch, 6, cell_id, CPNORM)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
}
void base_init() {
/* init memory */
sf_buffer = malloc(sizeof(cf_t) * sf_n_re);
if (!sf_buffer) {
perror("malloc");
exit(-1);
}
output_buffer = malloc(sizeof(cf_t) * sf_n_samples);
if (!output_buffer) {
perror("malloc");
exit(-1);
}
/* open file or USRP */
if (output_file_name) {
if (filesink_init(&fsink, output_file_name, COMPLEX_FLOAT_BIN)) {
fprintf(stderr, "Error opening file %s\n", output_file_name);
exit(-1);
}
} else {
#ifndef DISABLE_UHD
printf("Opening UHD device...\n");
if (cuhd_open(uhd_args, &uhd)) {
fprintf(stderr, "Error opening uhd\n");
exit(-1);
}
#else
printf("Error UHD not available. Select an output file\n");
exit(-1);
#endif
}
/* create ifft object */
if (lte_ifft_init(&ifft, CPNORM, cell.nof_prb)) {
fprintf(stderr, "Error creating iFFT object\n");
exit(-1);
}
if (pbch_init(&pbch, cell)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
if (regs_init(®s, R_1, PHICH_NORM, cell)) {
fprintf(stderr, "Error initiating regs\n");
exit(-1);
}
if (pcfich_init(&pcfich, ®s, cell)) {
fprintf(stderr, "Error creating PBCH object\n");
exit(-1);
}
if (regs_set_cfi(®s, cfi)) {
fprintf(stderr, "Error setting CFI\n");
exit(-1);
}
if (pdcch_init(&pdcch, ®s, cell)) {
fprintf(stderr, "Error creating PDCCH object\n");
exit(-1);
}
if (pdsch_init(&pdsch, cell)) {
fprintf(stderr, "Error creating PDSCH object\n");
exit(-1);
}
pdsch_set_rnti(&pdsch, 1234);
if (pdsch_harq_init(&harq_process, &pdsch)) {
fprintf(stderr, "Error initiating HARQ process\n");
exit(-1);
}
}
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);
}
