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-rw-r--r--host/lib/usrp/e300/e300_io_impl.cpp8
1 files changed, 7 insertions, 1 deletions
diff --git a/host/lib/usrp/e300/e300_io_impl.cpp b/host/lib/usrp/e300/e300_io_impl.cpp
index a1d0a8da1..fa4915ed1 100644
--- a/host/lib/usrp/e300/e300_io_impl.cpp
+++ b/host/lib/usrp/e300/e300_io_impl.cpp
@@ -590,7 +590,13 @@ tx_streamer::sptr e300_impl::get_tx_stream(const uhd::stream_args_t &args_)
//flow control setup
const size_t fc_window = data_xports.send->get_num_send_frames();
- perif.deframer->configure_flow_control(0/*cycs off*/, fc_window/8/*pkts*/);
+ const size_t fc_handle_window = std::max<size_t>(1, fc_window/E300_TX_FC_RESPONSE_FREQ);
+
+ UHD_LOG << "TX Flow Control Window = " << fc_window
+ << ", TX Flow Control Handler Window = "
+ << fc_handle_window << std::endl;
+
+ perif.deframer->configure_flow_control(0/*cycs off*/, fc_handle_window/*pkts*/);
boost::shared_ptr<e300_tx_fc_cache_t> fc_cache(new e300_tx_fc_cache_t());
fc_cache->stream_channel = stream_i;
fc_cache->device_channel = args.channels[stream_i];