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win32.py
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#! python # # Constants and types for use with Windows API, used by serialwin32.py # # This file is part of pySerial. https://github.com/pyserial/pyserial # (C) 2001-2015 Chris Liechti <cliechti@gmx.net> # # SPDX-License-Identifier: BSD-3-Clause # pylint: disable=invalid-name,too-few-public-methods,protected-access,too-many-instance-attributes from ctypes import c_ulong, c_void_p, c_int64, c_char, \ WinDLL, sizeof, Structure, Union, POINTER from ctypes.wintypes import HANDLE from ctypes.wintypes import BOOL from ctypes.wintypes import LPCWSTR from ctypes.wintypes import DWORD from ctypes.wintypes import WORD from ctypes.wintypes import BYTE _stdcall_libraries = {} _stdcall_libraries['kernel32'] = WinDLL('kernel32') INVALID_HANDLE_VALUE = HANDLE(-1).value # some details of the windows API differ between 32 and 64 bit systems.. def is_64bit(): """Returns true when running on a 64 bit system""" return sizeof(c_ulong) != sizeof(c_void_p) # ULONG_PTR is a an ordinary number, not a pointer and contrary to the name it # is either 32 or 64 bits, depending on the type of windows... # so test if this a 32 bit windows... if is_64bit(): ULONG_PTR = c_int64 else: ULONG_PTR = c_ulong class _SECURITY_ATTRIBUTES(Structure): pass LPSECURITY_ATTRIBUTES = POINTER(_SECURITY_ATTRIBUTES) try: CreateEventW = _stdcall_libraries['kernel32'].CreateEventW except AttributeError: # Fallback to non wide char version for old OS... from ctypes.wintypes import LPCSTR CreateEventA = _stdcall_libraries['kernel32'].CreateEventA CreateEventA.restype = HANDLE CreateEventA.argtypes = [LPSECURITY_ATTRIBUTES, BOOL, BOOL, LPCSTR] CreateEvent = CreateEventA CreateFileA = _stdcall_libraries['kernel32'].CreateFileA CreateFileA.restype = HANDLE CreateFileA.argtypes = [LPCSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE] CreateFile = CreateFileA else: CreateEventW.restype = HANDLE CreateEventW.argtypes = [LPSECURITY_ATTRIBUTES, BOOL, BOOL, LPCWSTR] CreateEvent = CreateEventW # alias CreateFileW = _stdcall_libraries['kernel32'].CreateFileW CreateFileW.restype = HANDLE CreateFileW.argtypes = [LPCWSTR, DWORD, DWORD, LPSECURITY_ATTRIBUTES, DWORD, DWORD, HANDLE] CreateFile = CreateFileW # alias class _OVERLAPPED(Structure): pass OVERLAPPED = _OVERLAPPED class _COMSTAT(Structure): pass COMSTAT = _COMSTAT class _DCB(Structure): pass DCB = _DCB class _COMMTIMEOUTS(Structure): pass COMMTIMEOUTS = _COMMTIMEOUTS GetLastError = _stdcall_libraries['kernel32'].GetLastError GetLastError.restype = DWORD GetLastError.argtypes = [] LPOVERLAPPED = POINTER(_OVERLAPPED) LPDWORD = POINTER(DWORD) GetOverlappedResult = _stdcall_libraries['kernel32'].GetOverlappedResult GetOverlappedResult.restype = BOOL GetOverlappedResult.argtypes = [HANDLE, LPOVERLAPPED, LPDWORD, BOOL] ResetEvent = _stdcall_libraries['kernel32'].ResetEvent ResetEvent.restype = BOOL ResetEvent.argtypes = [HANDLE] LPCVOID = c_void_p WriteFile = _stdcall_libraries['kernel32'].WriteFile WriteFile.restype = BOOL WriteFile.argtypes = [HANDLE, LPCVOID, DWORD, LPDWORD, LPOVERLAPPED] LPVOID = c_void_p ReadFile = _stdcall_libraries['kernel32'].ReadFile ReadFile.restype = BOOL ReadFile.argtypes = [HANDLE, LPVOID, DWORD, LPDWORD, LPOVERLAPPED] CloseHandle = _stdcall_libraries['kernel32'].CloseHandle CloseHandle.restype = BOOL CloseHandle.argtypes = [HANDLE] ClearCommBreak = _stdcall_libraries['kernel32'].ClearCommBreak ClearCommBreak.restype = BOOL ClearCommBreak.argtypes = [HANDLE] LPCOMSTAT = POINTER(_COMSTAT) ClearCommError = _stdcall_libraries['kernel32'].ClearCommError ClearCommError.restype = BOOL ClearCommError.argtypes = [HANDLE, LPDWORD, LPCOMSTAT] SetupComm = _stdcall_libraries['kernel32'].SetupComm SetupComm.restype = BOOL SetupComm.argtypes = [HANDLE, DWORD, DWORD] EscapeCommFunction = _stdcall_libraries['kernel32'].EscapeCommFunction EscapeCommFunction.restype = BOOL EscapeCommFunction.argtypes = [HANDLE, DWORD] GetCommModemStatus = _stdcall_libraries['kernel32'].GetCommModemStatus GetCommModemStatus.restype = BOOL GetCommModemStatus.argtypes = [HANDLE, LPDWORD] LPDCB = POINTER(_DCB) GetCommState = _stdcall_libraries['kernel32'].GetCommState GetCommState.restype = BOOL GetCommState.argtypes = [HANDLE, LPDCB] LPCOMMTIMEOUTS = POINTER(_COMMTIMEOUTS) GetCommTimeouts = _stdcall_libraries['kernel32'].GetCommTimeouts GetCommTimeouts.restype = BOOL GetCommTimeouts.argtypes = [HANDLE, LPCOMMTIMEOUTS] PurgeComm = _stdcall_libraries['kernel32'].PurgeComm PurgeComm.restype = BOOL PurgeComm.argtypes = [HANDLE, DWORD] SetCommBreak = _stdcall_libraries['kernel32'].SetCommBreak SetCommBreak.restype = BOOL SetCommBreak.argtypes = [HANDLE] SetCommMask = _stdcall_libraries['kernel32'].SetCommMask SetCommMask.restype = BOOL SetCommMask.argtypes = [HANDLE, DWORD] SetCommState = _stdcall_libraries['kernel32'].SetCommState SetCommState.restype = BOOL SetCommState.argtypes = [HANDLE, LPDCB] SetCommTimeouts = _stdcall_libraries['kernel32'].SetCommTimeouts SetCommTimeouts.restype = BOOL SetCommTimeouts.argtypes = [HANDLE, LPCOMMTIMEOUTS] WaitForSingleObject = _stdcall_libraries['kernel32'].WaitForSingleObject WaitForSingleObject.restype = DWORD WaitForSingleObject.argtypes = [HANDLE, DWORD] CancelIoEx = _stdcall_libraries['kernel32'].CancelIoEx CancelIoEx.restype = BOOL CancelIoEx.argtypes = [HANDLE, LPOVERLAPPED] ONESTOPBIT = 0 # Variable c_int TWOSTOPBITS = 2 # Variable c_int ONE5STOPBITS = 1 NOPARITY = 0 # Variable c_int ODDPARITY = 1 # Variable c_int EVENPARITY = 2 # Variable c_int MARKPARITY = 3 SPACEPARITY = 4 RTS_CONTROL_HANDSHAKE = 2 # Variable c_int RTS_CONTROL_DISABLE = 0 # Variable c_int RTS_CONTROL_ENABLE = 1 # Variable c_int RTS_CONTROL_TOGGLE = 3 # Variable c_int SETRTS = 3 CLRRTS = 4 DTR_CONTROL_HANDSHAKE = 2 # Variable c_int DTR_CONTROL_DISABLE = 0 # Variable c_int DTR_CONTROL_ENABLE = 1 # Variable c_int SETDTR = 5 CLRDTR = 6 MS_DSR_ON = 32 # Variable c_ulong EV_RING = 256 # Variable c_int EV_PERR = 512 # Variable c_int EV_ERR = 128 # Variable c_int SETXOFF = 1 # Variable c_int EV_RXCHAR = 1 # Variable c_int GENERIC_WRITE = 1073741824 # Variable c_long PURGE_TXCLEAR = 4 # Variable c_int FILE_FLAG_OVERLAPPED = 1073741824 # Variable c_int EV_DSR = 16 # Variable c_int MAXDWORD = 4294967295 # Variable c_uint EV_RLSD = 32 # Variable c_int ERROR_SUCCESS = 0 ERROR_NOT_ENOUGH_MEMORY = 8 ERROR_OPERATION_ABORTED = 995 ERROR_IO_INCOMPLETE = 996 ERROR_IO_PENDING = 997 # Variable c_long ERROR_INVALID_USER_BUFFER = 1784 MS_CTS_ON = 16 # Variable c_ulong EV_EVENT1 = 2048 # Variable c_int EV_RX80FULL = 1024 # Variable c_int PURGE_RXABORT = 2 # Variable c_int FILE_ATTRIBUTE_NORMAL = 128 # Variable c_int PURGE_TXABORT = 1 # Variable c_int SETXON = 2 # Variable c_int OPEN_EXISTING = 3 # Variable c_int MS_RING_ON = 64 # Variable c_ulong EV_TXEMPTY = 4 # Variable c_int EV_RXFLAG = 2 # Variable c_int MS_RLSD_ON = 128 # Variable c_ulong GENERIC_READ = 2147483648 # Variable c_ulong EV_EVENT2 = 4096 # Variable c_int EV_CTS = 8 # Variable c_int EV_BREAK = 64 # Variable c_int PURGE_RXCLEAR = 8 # Variable c_int INFINITE = 0xFFFFFFFF class N11_OVERLAPPED4DOLLAR_48E(Union): pass class N11_OVERLAPPED4DOLLAR_484DOLLAR_49E(Structure): pass N11_OVERLAPPED4DOLLAR_484DOLLAR_49E._fields_ = [ ('Offset', DWORD), ('OffsetHigh', DWORD), ] PVOID = c_void_p N11_OVERLAPPED4DOLLAR_48E._anonymous_ = ['_0'] N11_OVERLAPPED4DOLLAR_48E._fields_ = [ ('_0', N11_OVERLAPPED4DOLLAR_484DOLLAR_49E), ('Pointer', PVOID), ] _OVERLAPPED._anonymous_ = ['_0'] _OVERLAPPED._fields_ = [ ('Internal', ULONG_PTR), ('InternalHigh', ULONG_PTR), ('_0', N11_OVERLAPPED4DOLLAR_48E), ('hEvent', HANDLE), ] _SECURITY_ATTRIBUTES._fields_ = [ ('nLength', DWORD), ('lpSecurityDescriptor', LPVOID), ('bInheritHandle', BOOL), ] _COMSTAT._fields_ = [ ('fCtsHold', DWORD, 1), ('fDsrHold', DWORD, 1), ('fRlsdHold', DWORD, 1), ('fXoffHold', DWORD, 1), ('fXoffSent', DWORD, 1), ('fEof', DWORD, 1), ('fTxim', DWORD, 1), ('fReserved', DWORD, 25), ('cbInQue', DWORD), ('cbOutQue', DWORD), ] _DCB._fields_ = [ ('DCBlength', DWORD), ('BaudRate', DWORD), ('fBinary', DWORD, 1), ('fParity', DWORD, 1), ('fOutxCtsFlow', DWORD, 1), ('fOutxDsrFlow', DWORD, 1), ('fDtrControl', DWORD, 2), ('fDsrSensitivity', DWORD, 1), ('fTXContinueOnXoff', DWORD, 1), ('fOutX', DWORD, 1), ('fInX', DWORD, 1), ('fErrorChar', DWORD, 1), ('fNull', DWORD, 1), ('fRtsControl', DWORD, 2), ('fAbortOnError', DWORD, 1), ('fDummy2', DWORD, 17), ('wReserved', WORD), ('XonLim', WORD), ('XoffLim', WORD), ('ByteSize', BYTE), ('Parity', BYTE), ('StopBits', BYTE), ('XonChar', c_char), ('XoffChar', c_char), ('ErrorChar', c_char), ('EofChar', c_char), ('EvtChar', c_char), ('wReserved1', WORD), ] _COMMTIMEOUTS._fields_ = [ ('ReadIntervalTimeout', DWORD), ('ReadTotalTimeoutMultiplier', DWORD), ('ReadTotalTimeoutConstant', DWORD), ('WriteTotalTimeoutMultiplier', DWORD), ('WriteTotalTimeoutConstant', DWORD), ] __all__ = ['GetLastError', 'MS_CTS_ON', 'FILE_ATTRIBUTE_NORMAL', 'DTR_CONTROL_ENABLE', '_COMSTAT', 'MS_RLSD_ON', 'GetOverlappedResult', 'SETXON', 'PURGE_TXABORT', 'PurgeComm', 'N11_OVERLAPPED4DOLLAR_48E', 'EV_RING', 'ONESTOPBIT', 'SETXOFF', 'PURGE_RXABORT', 'GetCommState', 'RTS_CONTROL_ENABLE', '_DCB', 'CreateEvent', '_COMMTIMEOUTS', '_SECURITY_ATTRIBUTES', 'EV_DSR', 'EV_PERR', 'EV_RXFLAG', 'OPEN_EXISTING', 'DCB', 'FILE_FLAG_OVERLAPPED', 'EV_CTS', 'SetupComm', 'LPOVERLAPPED', 'EV_TXEMPTY', 'ClearCommBreak', 'LPSECURITY_ATTRIBUTES', 'SetCommBreak', 'SetCommTimeouts', 'COMMTIMEOUTS', 'ODDPARITY', 'EV_RLSD', 'GetCommModemStatus', 'EV_EVENT2', 'PURGE_TXCLEAR', 'EV_BREAK', 'EVENPARITY', 'LPCVOID', 'COMSTAT', 'ReadFile', 'PVOID', '_OVERLAPPED', 'WriteFile', 'GetCommTimeouts', 'ResetEvent', 'EV_RXCHAR', 'LPCOMSTAT', 'ClearCommError', 'ERROR_IO_PENDING', 'EscapeCommFunction', 'GENERIC_READ', 'RTS_CONTROL_HANDSHAKE', 'OVERLAPPED', 'DTR_CONTROL_HANDSHAKE', 'PURGE_RXCLEAR', 'GENERIC_WRITE', 'LPDCB', 'CreateEventW', 'SetCommMask', 'EV_EVENT1', 'SetCommState', 'LPVOID', 'CreateFileW', 'LPDWORD', 'EV_RX80FULL', 'TWOSTOPBITS', 'LPCOMMTIMEOUTS', 'MAXDWORD', 'MS_DSR_ON', 'MS_RING_ON', 'N11_OVERLAPPED4DOLLAR_484DOLLAR_49E', 'EV_ERR', 'ULONG_PTR', 'CreateFile', 'NOPARITY', 'CloseHandle']