HackRF code example fix (#59)

Getting rid of 100k entries before receiving was doing nothing.
777arc · Dec 10, 2024 · 619e2d9 · 619e2d9
1 parent 3f76bee
commit 619e2d9
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Showing 2 changed files with 4 additions and 4 deletions.
diff --git a/content/hackrf.rst b/content/hackrf.rst
@@ -225,8 +225,6 @@ After running the code below, if in your time plot, the samples are reaching the
 
         return 0
 
-    samples = samples[100000:] # get rid of the first 100k samples just to be safe, due to transients
-
     sdr.set_rx_callback(rx_callback)
     sdr.pyhackrf_start_rx()
     print('is_streaming', sdr.pyhackrf_is_streaming())
@@ -236,6 +234,8 @@ After running the code below, if in your time plot, the samples are reaching the
     sdr.pyhackrf_stop_rx()
     sdr.pyhackrf_close()
 
+    samples = samples[100000:] # get rid of the first 100k samples just to be safe, due to transients
+
     fft_size = 2048
     num_rows = len(samples) // fft_size
     spectrogram = np.zeros((num_rows, fft_size))

diff --git a/figure-generating-scripts/hackrf.py b/figure-generating-scripts/hackrf.py
@@ -93,8 +93,6 @@ def rx_callback(device, buffer, buffer_length, valid_length):  # this callback f
 
     return 0
 
-samples = samples[100000:] # get rid of the first 100k samples just to be safe, due to transients
-
 sdr.set_rx_callback(rx_callback)
 sdr.pyhackrf_start_rx()
 print('is_streaming', sdr.pyhackrf_is_streaming())
@@ -104,6 +102,8 @@ def rx_callback(device, buffer, buffer_length, valid_length):  # this callback f
 sdr.pyhackrf_stop_rx()
 sdr.pyhackrf_close()
 
+samples = samples[100000:] # get rid of the first 100k samples just to be safe, due to transients
+
 fft_size = 2048
 num_rows = len(samples) // fft_size
 spectrogram = np.zeros((num_rows, fft_size))