uhd: fixes to instantiating UHD devices to set the antenna and subdevice properly (patch from Sam Bretheim).

1 files changed, 8 insertions, 8 deletions

diff --git a/gr-uhd/examples/usrp_wfm_rcv_fmdet.py b/gr-uhd/examples/usrp_wfm_rcv_fmdet.py
index 225c9607b..9649857c0 100755
--- a/gr-uhd/examples/usrp_wfm_rcv_fmdet.py
+++ b/gr-uhd/examples/usrp_wfm_rcv_fmdet.py
@@ -73,6 +73,14 @@ class wfm_rx_block (stdgui2.std_top_block):
         # build graph
         self.u = uhd.usrp_source(device_addr=options.args, stream_args=uhd.stream_args('fc32'))
 
+        # Set the subdevice spec
+        if(options.spec):
+            self.u.set_subdev_spec(options.spec, 0)
+
+        # Set the antenna
+        if(options.antenna):
+            self.u.set_antenna(options.antenna, 0)
+
         usrp_rate  = 320e3
         demod_rate = 320e3
         audio_rate = 48e3
@@ -151,14 +159,6 @@ class wfm_rx_block (stdgui2.std_top_block):
         if not(self.set_freq(options.freq)):
             self._set_status_msg("Failed to set initial frequency")
 
-        # Set the subdevice spec
-        if(options.spec):
-            self.u.set_subdev_spec(options.spec, 0)
-
-        # Set the antenna
-        if(options.antenna):
-            self.u.set_antenna(options.antenna, 0)
-
     def _set_status_msg(self, msg, which=0):
         self.frame.GetStatusBar().SetStatusText(msg, which)