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Diffstat (limited to 'gr-uhd/lib/gr_uhd_usrp_sink.cc')
-rw-r--r--gr-uhd/lib/gr_uhd_usrp_sink.cc8
1 files changed, 5 insertions, 3 deletions
diff --git a/gr-uhd/lib/gr_uhd_usrp_sink.cc b/gr-uhd/lib/gr_uhd_usrp_sink.cc
index 4598e54c2..b8b99a41a 100644
--- a/gr-uhd/lib/gr_uhd_usrp_sink.cc
+++ b/gr-uhd/lib/gr_uhd_usrp_sink.cc
@@ -45,7 +45,8 @@ public:
num_channels, num_channels, io_type.size
)),
_type(io_type),
- _nchan(num_channels)
+ _nchan(num_channels),
+ _has_time_spec(_nchan > 1)
{
_dev = uhd::usrp::multi_usrp::make(device_addr);
}
@@ -172,7 +173,7 @@ public:
//send a mid-burst packet with time spec
_metadata.start_of_burst = false;
_metadata.end_of_burst = false;
- _metadata.has_time_spec = true;
+ _metadata.has_time_spec = _has_time_spec;
size_t num_sent = _dev->get_device()->send(
input_items, noutput_items, _metadata,
@@ -189,7 +190,7 @@ public:
bool start(void){
_metadata.start_of_burst = true;
_metadata.end_of_burst = false;
- _metadata.has_time_spec = true;
+ _metadata.has_time_spec = _has_time_spec;
_metadata.time_spec = get_time_now() + uhd::time_spec_t(0.01);
_dev->get_device()->send(
@@ -217,6 +218,7 @@ protected:
uhd::usrp::multi_usrp::sptr _dev;
const uhd::io_type_t _type;
size_t _nchan;
+ bool _has_time_spec;
uhd::tx_metadata_t _metadata;
double _sample_rate;
};