void demod_qpsk_lte_s(const cf_t *symbols, short *llr, int nsymbols) {
srslte_vec_convert_fi((const float*) symbols, -SCALE_SHORT_CONV_QPSK*sqrt(2), llr, nsymbols*2);
}
int rf_blade_send_timed(void *h,
void *data,
int nsamples,
time_t secs,
double frac_secs,
bool has_time_spec,
bool blocking,
bool is_start_of_burst,
bool is_end_of_burst)
{
rf_blade_handler_t *handler = (rf_blade_handler_t*) h;
struct bladerf_metadata meta;
int status;
if (!handler->tx_stream_enabled) {
rf_blade_start_tx_stream(h);
}
if (2*nsamples > CONVERT_BUFFER_SIZE) {
fprintf(stderr, "TX failed: nsamples exceeds buffer size (%d>%d)\n", nsamples, CONVERT_BUFFER_SIZE);
return -1;
}
srslte_vec_convert_fi(data, handler->tx_buffer, 2048, 2*nsamples);
memset(&meta, 0, sizeof(meta));
if (is_start_of_burst) {
if (has_time_spec) {
secs_to_timestamps(handler->tx_rate, secs, frac_secs, &meta.timestamp);
} else {
meta.flags |= BLADERF_META_FLAG_TX_NOW;
}
meta.flags |= BLADERF_META_FLAG_TX_BURST_START;
}
if (is_end_of_burst) {
meta.flags |= BLADERF_META_FLAG_TX_BURST_END;
}
srslte_rf_error_t error;
bzero(&error, sizeof(srslte_rf_error_t));
status = bladerf_sync_tx(handler->dev, handler->tx_buffer, nsamples, &meta, 2000);
if (status == BLADERF_ERR_TIME_PAST) {
if (blade_error_handler) {
error.type = SRSLTE_RF_ERROR_LATE;
blade_error_handler(error);
} else {
fprintf(stderr, "TX failed: %s\n", bladerf_strerror(status));
}
} else if (status) {
fprintf(stderr, "TX failed: %s\n", bladerf_strerror(status));
return status;
} else if (meta.status == BLADERF_META_STATUS_UNDERRUN) {
if (blade_error_handler) {
error.type = SRSLTE_RF_ERROR_UNDERFLOW;
blade_error_handler(error);
} else {
fprintf(stderr, "TX warning: underflow detected.\n");
}
}
return nsamples;
}
