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Merge remote-tracking branch 'origin/multi_usrp_frame_sync' into integration_2024_w23

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This commit is contained in:
Robert Schmidt
2024-06-06 08:39:49 +02:00
parent 9a4e9a2adc 6d5a0ab454
commit d58bedaed1
1 changed files with 28 additions and 2 deletions
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radio/USRP/usrp_lib.cpp
+28 -2
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@@ -1012,6 +1012,28 @@ int trx_usrp_reset_stats(openair0_device *device) {
return(0);
}
/*! \brief synch the USRP time accross devices using the host clock (ideally syched with PTP, but also NTP works) and assuming all
* devices are synched by octoclock */
static void usrp_sync_pps(usrp_state_t *s)
{
// First, wait for PPS.
uhd::time_spec_t time_last_pps = s->usrp->get_time_last_pps();
while (time_last_pps == s->usrp->get_time_last_pps()) {
boost::this_thread::sleep(boost::posix_time::milliseconds(1));
}
// get host time
struct timespec tp;
if (clock_gettime(CLOCK_TAI, &tp) != 0)
LOG_W(PHY, "error getting system time\n");
double tai_sec = (double)tp.tv_sec;
// set USRP time to host time at next pps
s->usrp->set_time_next_pps(uhd::time_spec_t(tai_sec));
LOG_I(HW, "USRP clock set to %f sec\n", tai_sec);
}
extern "C" {
int device_init(openair0_device *device, openair0_config_t *openair0_cfg) {
LOG_I(HW, "openair0_cfg[0].sdr_addrs == '%s'\n", openair0_cfg[0].sdr_addrs);
@@ -1188,8 +1210,12 @@ extern "C" {
exit(EXIT_FAILURE);
}
} else {
s->usrp->set_time_next_pps(uhd::time_spec_t(0.0));
if (s->usrp->get_time_source(0) == "external") {
usrp_sync_pps(s);
} else {
s->usrp->set_time_next_pps(uhd::time_spec_t(0.0));
}
if (s->usrp->get_clock_source(0) == "external") {
if (check_ref_locked(s,0)) {
LOG_I(HW,"USRP locked to external reference!\n");