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_nogui.py b/gr-uhd/examples/usrp_wfm_rcv_nogui.py
index 498d2dec6..f0195bcb5 100755
--- a/gr-uhd/examples/usrp_wfm_rcv_nogui.py
+++ b/gr-uhd/examples/usrp_wfm_rcv_nogui.py
@@ -65,6 +65,14 @@ class wfm_rx_block (gr.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 = 32e3
@@ -119,14 +127,6 @@ class wfm_rx_block (gr.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_vol (self, vol):
         g = self.volume_range()
         self.vol = max(g[0], min(g[1], vol))