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Commit 38ffe291 authored by Rakesh's avatar Rakesh
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TDD rx lte: save commit

parent 170083a9
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Showing with 145 additions and 10 deletions
targets/RT/USER/lte-ru.c
View file @ 38ffe291
......@@ -645,12 +645,17 @@ void rx_rf(RU_t *ru,
int i;
int resynch=0;
openair0_timestamp ts=0,old_ts=0;
lte_subframe_t SF_type = subframe_select(fp,*subframe%10);
lte_subframe_t SubFrame_type;
lte_subframe_t prevSF_type = subframe_select(fp,(*subframe+9)%10);
for (i=0; i<ru->nb_rx; i++)
rxp[i] = (void *)&ru->common.rxdata[i][*subframe*fp->samples_per_tti];
old_ts = proc->timestamp_rx;
if (fp->frame_type == FDD) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 1 );
old_ts = proc->timestamp_rx;
if(get_softmodem_params()->emulate_rf) {
wait_on_condition(&proc->mutex_emulateRF,&proc->cond_emulateRF,&proc->instance_cnt_emulateRF,"emulatedRF_thread");
......@@ -666,7 +671,7 @@ void rx_rf(RU_t *ru,
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 0 );
ru->south_in_cnt++;
LOG_D(PHY,"south_in_cnt %d\n",ru->south_in_cnt);
LOG_I(PHY,"south_in_cnt %d\n",ru->south_in_cnt);
if (ru->cmd==RU_FRAME_RESYNCH) {
LOG_I(PHY,"Applying frame resynch %d => %d\n",*frame,ru->cmdval);
......@@ -681,8 +686,6 @@ void rx_rf(RU_t *ru,
proc->timestamp_rx = ts-ru->ts_offset;
// AssertFatal(rxs == fp->samples_per_tti,
// "rx_rf: Asked for %d samples, got %d from SDR\n",fp->samples_per_tti,rxs);
if(rxs != fp->samples_per_tti) {
LOG_E(PHY,"rx_rf: Asked for %d samples, got %d from SDR\n",fp->samples_per_tti,rxs);
late_control=STATE_BURST_TERMINATE;
......@@ -711,17 +714,14 @@ void rx_rf(RU_t *ru,
proc->tti_tx = (proc->tti_rx+sf_ahead)%10;
proc->frame_tx = (proc->tti_rx>(9-sf_ahead)) ? (proc->frame_rx+1)&1023 : proc->frame_rx;
#endif
//proc->timestamp_tx = proc->timestamp_rx+(sf_ahead*fp->samples_per_tti);
//proc->subframe_tx = (proc->tti_rx+sf_ahead)%10;
//proc->frame_tx = (proc->tti_rx>(9-sf_ahead)) ? (proc->frame_rx+1)&1023 : proc->frame_rx;
LOG_D(PHY,"RU %d/%d TS %llu (off %d), frame %d, subframe %d\n",
LOG_I(PHY,"RU %d/%d TS %llu (off %d), frame %d, subframe %d\n",
ru->idx,
0,
(unsigned long long int)proc->timestamp_rx,
(int)ru->ts_offset,
proc->frame_rx,
proc->tti_rx);
LOG_D(PHY,"south_in/rx_rf: RU %d/%d TS %llu (off %d), frame %d, subframe %d\n",
LOG_I(PHY,"south_in/rx_rf: RU %d/%d TS %llu (off %d), frame %d, subframe %d\n",
ru->idx,
0,
(unsigned long long int)proc->timestamp_rx,
......@@ -757,7 +757,7 @@ void rx_rf(RU_t *ru,
*subframe = proc->tti_rx;
}
//printf("timestamp_rx %lu, frame %d(%d), subframe %d(%d)\n",ru->timestamp_rx,proc->frame_rx,frame,proc->tti_rx,subframe);
//printf("timestamp_rx %lu, frame %d(%d), subframe %d(%d),ts %lu \n",proc->timestamp_rx,proc->frame_rx,frame,proc->tti_rx,subframe,ts);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
if (rxs != fp->samples_per_tti) {
......@@ -768,6 +768,141 @@ void rx_rf(RU_t *ru,
LOG_E(PHY, "problem receiving samples");
#endif
}
} else if(fp->frame_type == TDD) {
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 1 );
//when the USRP starts, it initializes the timestamp to 0. We wait 1 frames until we program the first rx.
if (proc->first_rx==1) {
proc->timestamp_rx = fp->samples_per_subframe*LTE_NUMBER_OF_SUBFRAMES_PER_FRAME;
proc->first_rx = 0;
}
else {
//we always advance the timestamp by samples_per_slot, even if we have not read the (full) slot. This is to keep the timestamp updated even when there is no RX.
proc->timestamp_rx += fp->samples_per_subframe;
}
int siglen;
if ( SF_type == SF_UL || SF_type == SF_S || IS_SOFTMODEM_RFSIM) {
if (SF_type == SF_S) {
int subframe_ul_count = 0;
siglen = (fp->nb_prefix_samples + fp->ofdm_symbol_size) * fp->ul_symbols_in_S_subframe;
proc->timestamp_rx += fp->samples_per_subframe - siglen;
for (int subframe_number = *subframe+1; subframe_number < LTE_NUMBER_OF_SUBFRAMES_PER_FRAME; subframe_number++) {
SubFrame_type = subframe_select(fp,subframe_number%10);
if(SubFrame_type == SF_UL) {
subframe_ul_count++;
} else break;
}
ru->rfdevice.trx_issue_stream_cmd(&ru->rfdevice,
proc->timestamp_rx,
siglen + subframe_ul_count*fp->samples_per_subframe);
} else {
siglen = fp->samples_per_subframe;
}
LOG_I(PHY,"Reading %d samples for subframe %d at timestamp %ld\n",siglen,*subframe,proc->timestamp_rx);
if(emulate_rf) {
wait_on_condition(&proc->mutex_emulateRF,&proc->cond_emulateRF,&proc->instance_cnt_emulateRF,"emulatedRF_thread");
release_thread(&proc->mutex_emulateRF,&proc->instance_cnt_emulateRF,"emulatedRF_thread");
rxs = siglen;
}
else {
rxs = ru->rfdevice.trx_read_func(&ru->rfdevice,
&ts,
rxp,
siglen,
ru->nb_rx);
}
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 0 );
ru->south_in_cnt++;
LOG_D(PHY,"south_in_cnt %d\n",ru->south_in_cnt);
LOG_I(PHY,"ts_offset %lu, ts %lu ,timestamp_rx %lu\n",ru->ts_offset,ts,proc->timestamp_rx);
if (ru->cmd==RU_FRAME_RESYNCH) {
LOG_I(PHY,"Applying frame resynch %d => %d\n",*frame,ru->cmdval);
if (proc->frame_rx>ru->cmdval) ru->ts_offset += (proc->frame_rx - ru->cmdval)*fp->samples_per_tti*10;
else ru->ts_offset -= (-proc->frame_rx + ru->cmdval)*fp->samples_per_tti*10;
*frame = ru->cmdval;
ru->cmd=EMPTY;
resynch=1;
}
proc->timestamp_rx = ts-ru->ts_offset;
if (rxs != siglen) LOG_E(PHY, "rx_rf: Asked for %d samples, got %d from USRP\n",siglen,rxs);
}
if (ru->fh_north_asynch_in == NULL) {
#ifdef PHY_TX_THREAD
proc->timestamp_phy_tx = proc->timestamp_rx+((sf_ahead-1)*fp->samples_per_tti);
proc->subframe_phy_tx = (proc->tti_rx+(sf_ahead-1))%10;
proc->frame_phy_tx = (proc->tti_rx>(9-(sf_ahead-1))) ? (proc->frame_rx+1)&1023 : proc->frame_rx;
#else
proc->timestamp_tx = proc->timestamp_rx+(sf_ahead*fp->samples_per_tti);
proc->tti_tx = (proc->tti_rx+sf_ahead)%10;
proc->frame_tx = (proc->tti_rx>(9-sf_ahead)) ? (proc->frame_rx+1)&1023 : proc->frame_rx;
#endif
LOG_I(PHY,"RU %d/%d TS %llu (off %d), frame %d, subframe %d\n",
ru->idx,
0,
(unsigned long long int)proc->timestamp_rx,
(int)ru->ts_offset,
proc->frame_rx,
proc->tti_rx);
LOG_I(PHY,"south_in/rx_rf: RU %d/%d TS %llu (off %d), frame %d, subframe %d\n",
ru->idx,
0,
(unsigned long long int)proc->timestamp_rx,
(int)ru->ts_offset,
proc->frame_rx,
proc->tti_rx);
// dump VCD output for first RU in list
if (ru == RC.ru[0]) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_RU, proc->frame_rx );
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TTI_NUMBER_RX0_RU, proc->tti_rx );
if (ru->fh_north_asynch_in == NULL) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_TX0_RU, proc->frame_tx );
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TTI_NUMBER_TX0_RU, proc->tti_tx );
}
}
}
proc->frame_rx = *frame;
proc->tti_rx = *subframe;
VCD_SIGNAL_DUMPER_DUMP_FUNCTION_BY_NAME( VCD_SIGNAL_DUMPER_FUNCTIONS_TRX_READ, 0 );
// synchronize first reception to frame 0 subframe 0
LOG_I(PHY,"RU %d/%d TS %llu (off %d), frame %d, subframe %d.%d / \n",
ru->idx,
0,
(unsigned long long int)proc->timestamp_rx,
(int)ru->ts_offset,proc->frame_rx,proc->tti_rx,proc->tti_tx);
// dump VCD output for first RU in list
if (ru == RC.ru[0]) {
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_FRAME_NUMBER_RX0_RU, proc->frame_rx );
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TTI_NUMBER_RX0_RU, proc->tti_rx );
}
//printf("timestamp_rx %lu, frame %d(%d), subframe %d(%d),ts %lu \n",proc->timestamp_rx,proc->frame_rx,frame,proc->tti_rx,subframe,ts);
VCD_SIGNAL_DUMPER_DUMP_VARIABLE_BY_NAME( VCD_SIGNAL_DUMPER_VARIABLES_TRX_TS, proc->timestamp_rx&0xffffffff );
}
}
......
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