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fix(waveform): set up async curve subscriptions once per scan transition

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wyzula_j
2026-06-12 11:01:11 +02:00
committed by Jan Wyzula
parent d6231726d6
commit bf61399123
1 changed files with 5 additions and 6 deletions
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bec_widgets/widgets/plots/waveform/waveform.py
+5 -6
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@@ -152,7 +152,6 @@ class Waveform(PlotBase):
self.old_scan_id = None
self.scan_id = None
self.scan_item = None
self.readout_priority = None
self.x_axis_mode = {
"name": "auto",
"entry": None,
@@ -1590,19 +1589,19 @@ class Waveform(PlotBase):
self._update_curve_visibility()
self._mode = self._categorise_device_curves()
# First trigger to sync and async data
# First trigger to sync and async data. Async curve subscriptions
# were already set up by _categorise_device_curves above (it calls
# _setup_async_curve per async curve for live scans); repeating it
# here cleared each curve's data a second time and re-attempted
# the stream registration for every new scan.
if self._mode == "sync":
self.sync_signal_update.emit()
logger.info("Scan status: Sync mode")
elif self._mode == "async":
for curve in self._async_curves:
self._setup_async_curve(curve)
self.async_signal_update.emit()
logger.info("Scan status: Async mode")
else:
self.sync_signal_update.emit()
for curve in self._async_curves:
self._setup_async_curve(curve)
self.async_signal_update.emit()
logger.info("Scan status: Mixed mode")
logger.warning("Mixed mode - integrity of x axis cannot be guaranteed.")