From 83b10f4c63ddbbb19dbe614456a97136fffa06e1 Mon Sep 17 00:00:00 2001
From: Josh Bailey <josh@vandervecken.com>
Date: Sun, 4 Aug 2024 20:41:23 +0000
Subject: [PATCH 1/2] stare mode initial frequency

---
 docker/Dockerfile.base | 2 +-
 gamutrf/grscan.py      | 4 +++-
 2 files changed, 4 insertions(+), 2 deletions(-)

diff --git a/docker/Dockerfile.base b/docker/Dockerfile.base
index 58d250ab..2d24dd0b 100644
--- a/docker/Dockerfile.base
+++ b/docker/Dockerfile.base
@@ -14,7 +14,7 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   libvulkan-dev \
   pybind11-dev
 WORKDIR /root
-RUN git clone https://github.com/iqtlabs/gr-iqtlabs -b 1.0.114
+RUN git clone https://github.com/iqtlabs/gr-iqtlabs -b 1.0.115
 COPY --from=iqtlabs/gamutrf-vkfft:latest /root /root/gr-iqtlabs
 WORKDIR /root/gr-iqtlabs/build
 COPY --from=iqtlabs/gamutrf-sigmf:latest /usr/local /usr/local
diff --git a/gamutrf/grscan.py b/gamutrf/grscan.py
index 9b5d01b7..acdd1ba4 100644
--- a/gamutrf/grscan.py
+++ b/gamutrf/grscan.py
@@ -105,10 +105,12 @@ def __init__(
             description = description.strip('"')
         tune_step_hz = int(samp_rate * tuneoverlap)
         stare = False
+        initial_freq = freq_start
 
         if freq_end == 0:
             stare = True
             freq_end = freq_start + (tune_step_hz - 1)
+            initial_freq += int((freq_end - freq_start) / 2)
             logging.info(
                 f"using stare mode, scan from {freq_start/1e6}MHz to {freq_end/1e6}MHz"
             )
@@ -167,7 +169,7 @@ def __init__(
             nfft,
             tune_step_fft,
             agc=False,
-            center_freq=freq_start,
+            center_freq=initial_freq,
             sdrargs=sdrargs,
             dc_ettus_auto_offset=dc_ettus_auto_offset,
         )

From eb53c824f4ab58fb43e9612db6b3ff0c4bf6997e Mon Sep 17 00:00:00 2001
From: Josh Bailey <josh@vandervecken.com>
Date: Sun, 4 Aug 2024 22:05:09 +0000
Subject: [PATCH 2/2] scale.

---
 gamutrf/grscan.py | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/gamutrf/grscan.py b/gamutrf/grscan.py
index acdd1ba4..175be885 100644
--- a/gamutrf/grscan.py
+++ b/gamutrf/grscan.py
@@ -204,6 +204,7 @@ def __init__(
             if write_fft_points:
                 fft_dir = sample_dir
             Path(sample_dir).mkdir(parents=True, exist_ok=True)
+            samples_vlen = fft_batch_size * nfft
             self.samples_blocks.extend(
                 [
                     # blocks.vector_to_stream(
@@ -215,10 +216,10 @@ def __init__(
                         "rx_freq",
                         gr.sizeof_gr_complex,
                         "_".join(("cf32", endianstr())),
-                        fft_batch_size * nfft,
+                        samples_vlen,
                         sample_dir,
                         "samples",
-                        write_samples,
+                        int(write_samples / samples_vlen),
                         skip_tune_step,
                         int(samp_rate),
                         rotate_secs,