From cab7c1eb5c0d323ade589f33e0703dd6fe9c237b Mon Sep 17 00:00:00 2001
From: Chris Kuethe <chris.kuethe+github@gmail.com>
Date: Sun, 3 May 2015 16:05:00 -0700
Subject: Print scan rate
Useful when scanning in a way that is likely to run slowly, doubly
so when multiple passes across the band are needed.
---
gr-uhd/examples/python/usrp_spectrum_sense.py | 12 ++++++++++++
1 file changed, 12 insertions(+)
(limited to 'gr-uhd/examples/python')
diff --git a/gr-uhd/examples/python/usrp_spectrum_sense.py b/gr-uhd/examples/python/usrp_spectrum_sense.py
index ba45a2e80e..b1ea6b44d8 100755
--- a/gr-uhd/examples/python/usrp_spectrum_sense.py
+++ b/gr-uhd/examples/python/usrp_spectrum_sense.py
@@ -33,6 +33,7 @@ import math
import struct
import threading
from datetime import datetime
+import time
sys.stderr.write("Warning: this may have issues on some machines+Python version combinations to seg fault due to the callback in bin_statitics.\n\n")
@@ -271,6 +272,8 @@ def main_loop(tb):
bin_start = int(tb.fft_size * ((1 - 0.75) / 2))
bin_stop = int(tb.fft_size - bin_start)
+ timestamp = 0
+ centerfreq = 0
while 1:
# Get the next message sent from the C++ code (blocking call).
@@ -282,6 +285,15 @@ def main_loop(tb):
# m.raw_data is a string that contains the binary floats.
# You could write this as binary to a file.
+ # Scanning rate
+ if timestamp == 0:
+ timestamp = time.time()
+ centerfreq = m.center_freq
+ if m.center_freq < centerfreq:
+ sys.stderr.write("scanned %.1fMHz in %.1fs\n" % ((centerfreq - m.center_freq)/1.0e6, time.time() - timestamp))
+ timestamp = time.time()
+ centerfreq = m.center_freq
+
for i_bin in range(bin_start, bin_stop):
center_freq = m.center_freq
--
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