diff options
| -rw-r--r-- | serial/serialwin32.py | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/serial/serialwin32.py b/serial/serialwin32.py index fd5f730..7b88999 100644 --- a/serial/serialwin32.py +++ b/serial/serialwin32.py @@ -442,7 +442,7 @@ class Serial(SerialBase): flags = win32.DWORD() comstat = win32.COMSTAT() if not win32.ClearCommError(self._port_handle, ctypes.byref(flags), ctypes.byref(comstat)): - raise SerialException('call to ClearCommError failed') + raise SerialException("ClearCommError failed ({!r})".format(ctypes.WinError())) return comstat.cbOutQue def _cancel_overlapped_io(self, overlapped): @@ -471,3 +471,5 @@ class Serial(SerialBase): """Change the exclusive access setting.""" if exclusive is not None and not exclusive: raise ValueError('win32 only supports exclusive access (not: {})'.format(exclusive)) + else: + serial.SerialBase.exclusive.__set__(self, exclusive) |