clarify tune-dwell-ms arguments.

IQTLabs · Oct 23, 2023 · c8c85cc · c8c85cc
1 parent e7861bb
commit c8c85cc
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Showing 2 changed files with 6 additions and 3 deletions.
diff --git a/gamutrf/grscan.py b/gamutrf/grscan.py
@@ -131,6 +131,9 @@ def __init__(
                 logging.info(
                     f"retuning across {freq_range/1e6}MHz in {self.sweep_sec}s, requires retuning at {target_retune_hz}Hz in {tune_step_hz/1e6}MHz steps ({tune_step_fft} FFTs)"
                 )
+        if not tune_step_fft:
+            logging.info("tune_step_fft cannot be 0 - defaulting to nfft")
+            tune_step_fft = nfft
         tune_dwell_ms = tune_step_fft / fft_rate * 1e3
         logging.info(
             f"requested retuning across {freq_range/1e6}MHz every {tune_step_fft} FFTs, dwell time {tune_dwell_ms}ms"

diff --git a/gamutrf/scan.py b/gamutrf/scan.py
@@ -75,21 +75,21 @@ def argument_parser():
         dest="sweep_sec",
         type=float,
         default=30,
-        help="Set sweep_sec [default=%(default)r]",
+        help="Set sweep_sec [default=%(default)r] - ignored if --tune-dwell-ms > 0 or --tune-step-fft > 0",
     )
     parser.add_argument(
         "--tune-dwell-ms",
         dest="tune_dwell_ms",
         type=float,
         default=0,
-        help="Set tune dwell time in ms (0 is use sweep_sec) [default=%(default)r]",
+        help="Set tune dwell time in ms [default=%(default)r] - ignored if --tune-step-fft > 0",
     )
     parser.add_argument(
         "--tune-step-fft",
         dest="tune_step_fft",
         type=int,
         default=0,
-        help="tune FFT step (0 is use sweep_sec) [default=%(default)r]",
+        help="tune FFT step [default=%(default)r] - if 0, use --tune-dwell-ms (if > 0) or --sweep-sec (if > 0)",
     )
     parser.add_argument(
         "--skip-tune-step",