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feat(vrtsim): add get_timestamp to openair_device_t and vrtsim

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This function can be used to convert a timespec struct to a
openair0_timestamp. It can be used to synchronize the realtime
clock to the device sample number.

Signed-off-by: Bartosz Podrygajlo <bartosz.podrygajlo@openairinterface.org>
This commit is contained in:
Bartosz Podrygajlo
2025-08-29 10:44:04 +02:00
parent a1049e8dd1
commit cd79eec3ec
2 changed files with 15 additions and 0 deletions
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4
radio/COMMON/common_lib.h
View File

@@ -535,6 +535,10 @@ struct openair0_device {
*/
int (*trx_stop_func)(openair0_device_t *device);
/*! \brief Get timestamp from timespec
*/
openair0_timestamp_t (*get_timestamp)(openair0_device_t *device, struct timespec *ts);
/* Functions API related to UE*/
/*! \brief Set RX feaquencies

11
radio/vrtsim/vrtsim.c
View File

@@ -1100,6 +1100,14 @@ __attribute__((__visibility__("default"))) void vrtsim_produce_samples(openair0_
shm_td_iq_channel_produce_samples(vrtsim_state->channel, num_samples);
}
openair0_timestamp_t vrtsim_get_timestamp(openair0_device_t *device, struct timespec *ts)
{
vrtsim_state_t *vrtsim_state = (vrtsim_state_t *)device->priv;
int64_t diff = (ts->tv_sec - vrtsim_state->start_ts.tv_sec) * 1000000000 + (ts->tv_nsec - vrtsim_state->start_ts.tv_nsec);
double diff_samples = vrtsim_state->sample_rate * vrtsim_state->timescale * diff / 1e9;
return diff_samples;
}
__attribute__((__visibility__("default"))) int device_init(openair0_device_t *device, openair0_config_t *openair0_cfg)
{
randominit();
@@ -1119,6 +1127,9 @@ __attribute__((__visibility__("default"))) int device_init(openair0_device_t *de
device->trx_write_beams_func = vrtsim_write_beams;
device->trx_set_beams = vrtsim_set_beams;
device->trx_set_beams2 = vrtsim_set_beams2;
if (vrtsim_state->role == ROLE_SERVER) {
device->get_timestamp = vrtsim_get_timestamp;
}
device->type = RFSIMULATOR;
device->openair0_cfg = &openair0_cfg[0];