paulmataruso/openbts-2.8
1
0
Fork 0
mirror of https://github.com/fairwaves/openbts-2.8.git synced 2025-11-02 04:53:13 +00:00
Code Issues Packages Projects Releases Wiki Activity

umtrx: flush any possible garbage bursts at start

Browse Source 
In certain cases (higher sample-per-symbol counts), there is
some sensitivity to either timeouts or bad metadata on the
first packet. The first packet sets the transceiver clock, so
this is essential. As a workaround, drop the first 50 packets
to guarantee that we get a packet with a valid timestamp

Signed-off-by: Thomas Tsou <ttsou@vt.edu>
This commit is contained in:
Thomas Tsou
2012-07-23 13:19:13 -04:00
committed by Alexander Chemeris
parent 1bcd01c7c5
commit be809f6803
1 changed files with 7 additions and 5 deletions
Download Patch File Download Diff File Expand all files Collapse all files

12
Transceiver52M/UHDDevice.cpp
View File

@@ -552,11 +552,13 @@ void uhd_device::restart(uhd::time_spec_t ts)
uhd::rx_metadata_t md;
uint32_t buff[rx_spp];
usrp_dev->get_device()->recv(buff,
rx_spp,
md,
uhd::io_type_t::COMPLEX_INT16,
uhd::device::RECV_MODE_ONE_PACKET);
for (int i = 0; i < 50; i++) {
usrp_dev->get_device()->recv(buff,
rx_spp,
md,
uhd::io_type_t::COMPLEX_INT16,
uhd::device::RECV_MODE_ONE_PACKET);
}
init_rd_ts = convert_time(md.time_spec, actual_smpl_rt);
}