From d3e1d6e9be75ba8dcd21c2ed466b9e6a316625b0 Mon Sep 17 00:00:00 2001
From: natetemple <nate.temple@ettus.com>
Date: Fri, 22 Nov 2019 15:53:02 -0800
Subject: Examples: wrap up ref setting with option check

---
 host/examples/tx_waveforms.cpp | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

(limited to 'host/examples/tx_waveforms.cpp')

diff --git a/host/examples/tx_waveforms.cpp b/host/examples/tx_waveforms.cpp
index 1bc762f57..173f339e2 100644
--- a/host/examples/tx_waveforms.cpp
+++ b/host/examples/tx_waveforms.cpp
@@ -104,7 +104,9 @@ int UHD_SAFE_MAIN(int argc, char* argv[])
     }
 
     // Lock mboard clocks
-    usrp->set_clock_source(ref);
+    if (vm.count("ref")) {
+        usrp->set_clock_source(ref);
+    }
 
     std::cout << boost::format("Using Device: %s") % usrp->get_pp_string() << std::endl;
 
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