From 19716045c60f00296f24e115580da154e5ddef8d Mon Sep 17 00:00:00 2001
From: Martin Braun <martin.braun@ettus.com>
Date: Mon, 6 Apr 2015 11:44:04 -0700
Subject: e300: Added warning for high bandwidth usage

---
 host/lib/usrp/e300/e300_io_impl.cpp | 10 ++++++++++
 1 file changed, 10 insertions(+)

(limited to 'host/lib/usrp')

diff --git a/host/lib/usrp/e300/e300_io_impl.cpp b/host/lib/usrp/e300/e300_io_impl.cpp
index fa4915ed1..dadfb71e9 100644
--- a/host/lib/usrp/e300/e300_io_impl.cpp
+++ b/host/lib/usrp/e300/e300_io_impl.cpp
@@ -91,12 +91,21 @@ void e300_impl::_update_tick_rate(const double rate)
     }
 }
 
+#define CHECK_BANDWIDTH(dir) \
+    if (rate > _codec_ctrl->get_bw_filter_range(dir).stop()) { \
+        UHD_MSG(warning) \
+            << "Selected " << dir << " bandwidth (" << (rate/1e6) << " MHz) exceeds\n" \
+            << "analog frontend filter bandwidth (" << (_codec_ctrl->get_bw_filter_range(dir).stop()/1e6) << " MHz)." \
+            << std::endl; \
+    }
+
 void e300_impl::_update_rx_samp_rate(const size_t dspno, const double rate)
 {
     boost::shared_ptr<sph::recv_packet_streamer> my_streamer =
         boost::dynamic_pointer_cast<sph::recv_packet_streamer>(_radio_perifs[dspno].rx_streamer.lock());
     if (my_streamer)
         my_streamer->set_samp_rate(rate);
+    CHECK_BANDWIDTH("Rx");
 }
 
 void e300_impl::_update_tx_samp_rate(const size_t dspno, const double rate)
@@ -105,6 +114,7 @@ void e300_impl::_update_tx_samp_rate(const size_t dspno, const double rate)
         boost::dynamic_pointer_cast<sph::send_packet_streamer>(_radio_perifs[dspno].tx_streamer.lock());
     if (my_streamer)
         my_streamer->set_samp_rate(rate);
+    CHECK_BANDWIDTH("Tx");
 }
 
 /***********************************************************************
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