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fix for get_slot_from_timestamp

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This commit is contained in:
Rakesh
2020-10-01 17:47:17 +02:00
committed by Raymond Knopp
parent 2cac29b5c6
commit 5f7c30fb8c
6 changed files with 31 additions and 10 deletions
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executables/nr-ru.c
+7 -6
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@@ -623,6 +623,7 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
unsigned int rxs;
int i;
uint32_t samples_per_slot = fp->get_samples_per_slot(*slot,fp);
uint32_t samples_per_slot_prev ;
openair0_timestamp ts,old_ts;
AssertFatal(*slot<fp->slots_per_frame && *slot>=0, "slot %d is illegal (%d)\n",*slot,fp->slots_per_frame);
@@ -658,16 +659,16 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
ru->ts_offset = proc->timestamp_rx;
proc->timestamp_rx = 0;
} else {
if (proc->timestamp_rx - old_ts != fp->get_samples_per_slot((*slot-1)%fp->slots_per_frame,fp)) {
LOG_D(PHY,"rx_rf: rfdevice timing drift of %"PRId64" samples (ts_off %"PRId64")\n",proc->timestamp_rx - old_ts - samples_per_slot,ru->ts_offset);
ru->ts_offset += (proc->timestamp_rx - old_ts - samples_per_slot);
samples_per_slot_prev = fp->get_samples_per_slot((*slot-1)%fp->slots_per_frame,fp);
if (proc->timestamp_rx - old_ts != samples_per_slot_prev) {
LOG_D(PHY,"rx_rf: rfdevice timing drift of %"PRId64" samples (ts_off %"PRId64")\n",proc->timestamp_rx - old_ts - samples_per_slot_prev,ru->ts_offset);
ru->ts_offset += (proc->timestamp_rx - old_ts - samples_per_slot_prev);
proc->timestamp_rx = ts-ru->ts_offset;
}
}
proc->frame_rx = (proc->timestamp_rx / (fp->samples_per_subframe*10))&1023;
uint32_t idx_sf = proc->timestamp_rx / fp->samples_per_subframe;
proc->tti_rx = (idx_sf * fp->slots_per_subframe + (int)round((float)(proc->timestamp_rx % fp->samples_per_subframe) / fp->samples_per_slot0))%(fp->slots_per_frame);
proc->tti_rx = fp->get_slot_from_timestamp(proc->timestamp_rx,fp);
// synchronize first reception to frame 0 subframe 0
LOG_D(PHY,"RU %d/%d TS %llu (off %d), frame %d, slot %d.%d / %d\n",
ru->idx,
@@ -688,7 +689,7 @@ void rx_rf(RU_t *ru,int *frame,int *slot) {
}
if (proc->frame_rx != *frame) {
LOG_E(PHY,"Received Timestamp (%llu) doesn't correspond to the time we think it is (proc->frame_rx %d frame %d)\n",(long long unsigned int)proc->timestamp_rx,proc->frame_rx,*frame);
LOG_E(PHY,"Received Timestamp (%llu) doesn't correspond to the time we think it is (proc->frame_rx %d frame %d, proc->tti_rx %d, slot %d)\n",(long long unsigned int)proc->timestamp_rx,proc->frame_rx,*frame,proc->tti_rx,*slot);
exit_fun("Exiting");
}
} else {