ChTheo/RFG_stm32_ADC_receiver_GUI
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fix

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This commit is contained in:
awe
2026-06-09 17:50:19 +03:00
parent 66f57a9144
commit 83c83262d4
1 changed files with 2 additions and 9 deletions
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11
rfg_vna_viewer.py
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@ -30,6 +30,7 @@ READ_CHUNK = 65536
MARKER_MAIN = 0x000A MARKER_MAIN = 0x000A
MARKER_REF = 0x00A8 MARKER_REF = 0x00A8
MAX_SWEEP_POINTS = 4096 # safety limit — force finalize if dict grows past this MAX_SWEEP_POINTS = 4096 # safety limit — force finalize if dict grows past this
MIN_SWEEP_POINTS = 400 # discard fragments shorter than this
DATA_PATH = "/tmp/ttyADC_data" DATA_PATH = "/tmp/ttyADC_data"
@ -74,7 +75,6 @@ class SweepAccumulator:
self._buf = bytearray() self._buf = bytearray()
self._main = {} # step → (ch1_i16, ch2_i16) self._main = {} # step → (ch1_i16, ch2_i16)
self._ref = {} self._ref = {}
self._last_main_step = -1
def feed(self, data): def feed(self, data):
"""Feed raw bytes. Return list of completed sweep dicts.""" """Feed raw bytes. Return list of completed sweep dicts."""
@ -98,14 +98,7 @@ class SweepAccumulator:
# Main channel data point # Main channel data point
if w0 == MARKER_MAIN and w1 != 0xFFFF: if w0 == MARKER_MAIN and w1 != 0xFFFF:
step = w1 self._main[w1] = (_i16(w2), _i16(w3))
# Detect sweep wrap (step regression) without start marker
if self._last_main_step >= 0 and step < self._last_main_step - 10:
sw = self._finalize()
if sw is not None:
sweeps.append(sw)
self._main[step] = (_i16(w2), _i16(w3))
self._last_main_step = step
# Safety: force finalize if accumulator grew too large # Safety: force finalize if accumulator grew too large
if len(self._main) >= MAX_SWEEP_POINTS: if len(self._main) >= MAX_SWEEP_POINTS:
sw = self._finalize() sw = self._finalize()