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handle some mystery data packets from older devices

This commit is contained in:
Daniel Pavel 2013-07-01 11:34:54 +02:00
parent 0d56cfbded
commit 9a8d089c73
1 changed files with 7 additions and 1 deletions
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8
lib/logitech/unifying_receiver/base.py
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@ -201,9 +201,15 @@ def _read(handle, timeout):
if data:
assert isinstance(data, bytes), (repr(data), type(data))
report_id = ord(data[:1])
if report_id & 0xF0 == 0x00:
if _log.isEnabledFor(_DEBUG):
_log.debug("(%s) => r[%02X %s] ignoring unknown report", handle, report_id, _strhex(data[1:]))
return
assert (report_id == 0x10 and len(data) == _SHORT_MESSAGE_SIZE or
report_id == 0x11 and len(data) == _LONG_MESSAGE_SIZE or
report_id == 0x20 and len(data) == _MEDIUM_MESSAGE_SIZE)
report_id == 0x20 and len(data) == _MEDIUM_MESSAGE_SIZE), \
"unexpected message size: report_id %02X message %s" % (report_id, _strhex(data))
devnumber = ord(data[1:2])
if _log.isEnabledFor(_DEBUG):