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2 parents 2052ff6 + b08096f commit 1bffc2bCopy full SHA for 1bffc2b
adafruit_ble/__init__.py
@@ -229,9 +229,9 @@ def start_scan(
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If none are given then `Advertisement` objects will be returned.
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:rtype: iterable
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"""
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- prefixes = b""
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- if advertisement_types:
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- prefixes = b"".join(adv.prefix for adv in advertisement_types)
+ if not advertisement_types:
+ advertisement_types = (Advertisement,)
+ prefixes = b"".join(adv.prefix for adv in advertisement_types)
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for entry in self._adapter.start_scan(
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prefixes=prefixes,
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buffer_size=buffer_size,
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