Hi all,
Last few days ago,
I facing the same issue with my windows 7 64bit...
it work well with windows XP 32-bit...
FYI, I’m using python 2.6 amd64 bit as my core programming tools
currently, I’m start study/learn some arduino robotic and rewrite
Python-Arduino API
I just do a quick anatomy to the Pyserial code and diff. of the (Ctypes) Handle
range...
found both are diff range with same Kernel32 dll function call,
for 64-bit, ctypes.wintypes.HANDLE(-1) ==> c_void_p(18446744073709551615L)
in 32 bit, give c_void_p(4294967295L)
so what I guest it cause by Platform and environments issues.
below is what I did and modifies on 64-bit server:
a.. win32.py (C:\Python26\Lib\site-packages\serial)
a.. use HRESULT to replace HANDLE for kernel32 function handle return
b.. serialwin32.py (C:\Python26\Lib\site-packages\serial)
a.. use win32file, pywintypes, win32event to rewrite readfile and writefile
function
it seem work now for my 64-bit server, somehow I didn’t put some effort on
self.timeout == 0 for serial.... as I don’t have enough time for it....
that I will leave it back to Pyserial Owner to take the honor for that....
hope this will help to all open source member... (that why I’m like python most)
Regards,
Cheeng Shu Chin
#! python
# Python Serial Port Extension for Win32, Linux, BSD, Jython
# serial driver for win32
# see __init__.py
#
# (C) 2001-2009 Chris Liechti <[email protected]>
# this is distributed under a free software license, see license.txt
#
# Initial patch to use ctypes by Giovanni Bajo <[email protected]>
import ctypes
import win32
import win32file
import pywintypes
import win32event
#from ctypes.wintypes import HWND
from serialutil import *
#from pywin32_testutil import str2bytes
def device(portnum):
"""Turn a port number into a device name"""
return 'COM%d' % (portnum+1) # numbers are transformed to a string
class Win32Serial(SerialBase):
"""Serial port implementation for Win32 based on ctypes."""
BAUDRATES = (50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800,
9600, 19200, 38400, 57600, 115200)
def __init__(self, *args, **kwargs):
self.hComPort = None
SerialBase.__init__(self, *args, **kwargs)
def open(self):
"""Open port with current settings. This may throw a SerialException
if the port cannot be opened."""
if self._port is None:
raise SerialException("Port must be configured before it can be
used.")
# the "\\.\COMx" format is required for devices other than COM1-COM8
# not all versions of windows seem to support this properly
# so that the first few ports are used with the DOS device name
port = self.portstr
try:
if port.upper().startswith('COM') and int(port[3:]) > 8:
port = '\\\\.\\' + port
except ValueError:
# for like COMnotanumber
pass
self.hComPort = win32.CreateFile(port,
win32.GENERIC_READ | win32.GENERIC_WRITE,
0, # exclusive access
None, # no security
win32.OPEN_EXISTING,
win32.FILE_ATTRIBUTE_NORMAL | win32.FILE_FLAG_OVERLAPPED,
0)
#self.pComPort=pywintypes.HANDLE(self.hComPort)
#self.cComPort=HWND(self.hComPort)
#print ctypes.sizeof(self.pComPort)
#print ctypes.sizeof(self.hComPort)
if self.hComPort == win32.INVALID_HANDLE_VALUE:
self.hComPort = None # 'cause __del__ is called anyway
raise SerialException("could not open port %s: %s" % (self.portstr,
ctypes.WinError()))
# Setup a 4k buffer
win32.SetupComm(self.hComPort, 4096, 4096)
# Save original timeout values:
self._orgTimeouts = win32.COMMTIMEOUTS()
win32.GetCommTimeouts(self.hComPort, ctypes.byref(self._orgTimeouts))
self._rtsState = win32.RTS_CONTROL_ENABLE
self._dtrState = win32.DTR_CONTROL_ENABLE
self._reconfigurePort()
# Clear buffers:
# Remove anything that was there
win32.PurgeComm(self.hComPort,
win32.PURGE_TXCLEAR | win32.PURGE_TXABORT |
win32.PURGE_RXCLEAR | win32.PURGE_RXABORT)
self._overlappedRead = win32.OVERLAPPED()
self._overlappedRead.hEvent = win32.CreateEvent(None, 1, 0, None)
self._overlappedWrite = win32.OVERLAPPED()
#~ self._overlappedWrite.hEvent = win32.CreateEvent(None, 1, 0, None)
self._overlappedWrite.hEvent = win32.CreateEvent(None, 0, 0, None)
self._isOpen = True
def _reconfigurePort(self):
"""Set communication parameters on opened port."""
if not self.hComPort:
raise SerialException("Can only operate on a valid port handle")
# Set Windows timeout values
# timeouts is a tuple with the following items:
# (ReadIntervalTimeout,ReadTotalTimeoutMultiplier,
# ReadTotalTimeoutConstant,WriteTotalTimeoutMultiplier,
# WriteTotalTimeoutConstant)
if self._timeout is None:
timeouts = (0, 0, 0, 0, 0)
elif self._timeout == 0:
timeouts = (win32.MAXDWORD, 0, 0, 0, 0)
else:
timeouts = (0, 0, int(self._timeout*1000), 0, 0)
if self._timeout != 0 and self._interCharTimeout is not None:
timeouts = (int(self._interCharTimeout * 1000),) + timeouts[1:]
if self._writeTimeout is None:
pass
elif self._writeTimeout == 0:
timeouts = timeouts[:-2] + (0, win32.MAXDWORD)
else:
timeouts = timeouts[:-2] + (0, int(self._writeTimeout*1000))
win32.SetCommTimeouts(self.hComPort,
ctypes.byref(win32.COMMTIMEOUTS(*timeouts)))
win32.SetCommMask(self.hComPort, win32.EV_ERR)
# Setup the connection info.
# Get state and modify it:
comDCB = win32.DCB()
win32.GetCommState(self.hComPort, ctypes.byref(comDCB))
comDCB.BaudRate = self._baudrate
if self._bytesize == FIVEBITS:
comDCB.ByteSize = 5
elif self._bytesize == SIXBITS:
comDCB.ByteSize = 6
elif self._bytesize == SEVENBITS:
comDCB.ByteSize = 7
elif self._bytesize == EIGHTBITS:
comDCB.ByteSize = 8
else:
raise ValueError("Unsupported number of data bits: %r" %
self._bytesize)
if self._parity == PARITY_NONE:
comDCB.Parity = win32.NOPARITY
comDCB.fParity = 0 # Disable Parity Check
elif self._parity == PARITY_EVEN:
comDCB.Parity = win32.EVENPARITY
comDCB.fParity = 1 # Enable Parity Check
elif self._parity == PARITY_ODD:
comDCB.Parity = win32.ODDPARITY
comDCB.fParity = 1 # Enable Parity Check
elif self._parity == PARITY_MARK:
comDCB.Parity = win32.MARKPARITY
comDCB.fParity = 1 # Enable Parity Check
elif self._parity == PARITY_SPACE:
comDCB.Parity = win32.SPACEPARITY
comDCB.fParity = 1 # Enable Parity Check
else:
raise ValueError("Unsupported parity mode: %r" % self._parity)
if self._stopbits == STOPBITS_ONE:
comDCB.StopBits = win32.ONESTOPBIT
elif self._stopbits == STOPBITS_ONE_POINT_FIVE:
comDCB.StopBits = win32.ONE5STOPBITS
elif self._stopbits == STOPBITS_TWO:
comDCB.StopBits = win32.TWOSTOPBITS
else:
raise ValueError("Unsupported number of stop bits: %r" %
self._stopbits)
comDCB.fBinary = 1 # Enable Binary Transmission
# Char. w/ Parity-Err are replaced with 0xff (if fErrorChar is set to
TRUE)
if self._rtscts:
comDCB.fRtsControl = win32.RTS_CONTROL_HANDSHAKE
else:
comDCB.fRtsControl = self._rtsState
if self._dsrdtr:
comDCB.fDtrControl = win32.DTR_CONTROL_HANDSHAKE
else:
comDCB.fDtrControl = self._dtrState
comDCB.fOutxCtsFlow = self._rtscts
comDCB.fOutxDsrFlow = self._dsrdtr
comDCB.fOutX = self._xonxoff
comDCB.fInX = self._xonxoff
comDCB.fNull = 0
comDCB.fErrorChar = 0
comDCB.fAbortOnError = 0
comDCB.XonChar = XON
comDCB.XoffChar = XOFF
if not win32.SetCommState(self.hComPort, ctypes.byref(comDCB)):
raise ValueError("Cannot configure port, some setting was wrong.
Original message: %s" % ctypes.WinError())
#~ def __del__(self):
#~ self.close()
def close(self):
"""Close port"""
if self._isOpen:
if self.hComPort:
# Restore original timeout values:
win32.SetCommTimeouts(self.hComPort, self._orgTimeouts)
# Close COM-Port:
win32.CloseHandle(self.hComPort)
win32.CloseHandle(self._overlappedRead.hEvent)
win32.CloseHandle(self._overlappedWrite.hEvent)
self.hComPort = None
self._isOpen = False
def makeDeviceName(self, port):
return device(port)
# - - - - - - - - - - - - - - - - - - - - - - - -
def inWaiting(self):
"""Return the number of characters currently in the input buffer."""
flags = win32.DWORD()
comstat = win32.COMSTAT()
if not win32.ClearCommError(self.hComPort, ctypes.byref(flags),
ctypes.byref(comstat)):
raise SerialException('call to ClearCommError failed')
return comstat.cbInQue
def read(self, size=1):
"""Read size bytes from the serial port. If a timeout is set it may
return less characters as requested. With no timeout it will block
until the requested number of bytes is read."""
if not self.hComPort: raise portNotOpenError
if size > 0:
win32.ResetEvent(self._overlappedRead.hEvent)
flags = win32.DWORD()
comstat = win32.COMSTAT()
if not win32.ClearCommError(self.hComPort, ctypes.byref(flags),
ctypes.byref(comstat)):
raise SerialException('call to ClearCommError failed')
if self.timeout == 0:
n = min(comstat.cbInQue, size)
if n > 0:
buf = ctypes.create_string_buffer(n)
rc = win32.DWORD()
err = win32.ReadFile(self.hComPort, buf, n,
ctypes.byref(rc), ctypes.byref(self._overlappedRead))
if not err and win32.GetLastError() !=
win32.ERROR_IO_PENDING:
raise SerialException("ReadFile failed (%s)" %
ctypes.WinError())
err =
win32.WaitForSingleObject(self._overlappedRead.hEvent, win32.INFINITE)
read = buf.raw[:rc.value]
else:
read = bytes()
else:
buf = ctypes.create_string_buffer(size)
#rc = win32.DWORD()
#err = win32.ReadFile(self.hComPort, buf, size,
ctypes.byref(rc), ctypes.byref(self._overlappedRead))
bf=win32file.AllocateReadBuffer(size)
ov=pywintypes.OVERLAPPED()
ov.hEvent=win32event.CreateEvent(None, 0, 0, None)
err,bfo =win32file.ReadFile(self.hComPort,bf,ov)
#err = win32file.ReadFile(self.hComPort, buf, size,
ctypes.byref(rc), ctypes.byref(self._overlappedRead))
lerr=win32.GetLastError()
if lerr==0:
pass
elif not err and win32.GetLastError() != win32.ERROR_IO_PENDING:
raise SerialException("ReadFile failed (%s)" %
ctypes.WinError())
#err = win32.GetOverlappedResult(self.hComPort,
ctypes.byref(self._overlappedRead), ctypes.byref(rc), True)
err = win32file.GetOverlappedResult(self.hComPort, ov, True)
#read = buf.raw[:rc.value]
#read=bfo.raw[:len(bfo)]
#read=str(bf)
read=bfo
#print read
else:
read = bytes()
return bytes(read)
def write(self, data):
"""Output the given string over the serial port."""
if not self.hComPort: raise portNotOpenError
#~ if not isinstance(data, (bytes, bytearray)):
#~ raise TypeError('expected %s or bytearray, got %s' % (bytes,
type(data)))
# convert data (needed in case of memoryview instance: Py 3.1 io lib),
ctypes doesn't like memoryview
data = bytes(data)
if data:
#win32event.ResetEvent(self._overlappedWrite.hEvent)
#n = win32.DWORD()
#err = win32.WriteFile(self.hComPort, data, len(data),
ctypes.byref(n), self._overlappedWrite)
ln=len(data)
bf=win32file.AllocateReadBuffer(ln)
#val = str2bytes(data)
val=data
bf[:ln] = val
ov=pywintypes.OVERLAPPED()
ov.hEvent=win32event.CreateEvent(None, 0, 0, None)
ov.object=bf
err,nb = win32file.WriteFile(self.hComPort, bf, ov)
#if not err and win32.GetLastError() != win32.ERROR_IO_PENDING:
# raise SerialException("WriteFile failed (%s)" %
ctypes.WinError())
# Wait for the write to complete.
#win32file.WaitCommEvent(self.pComPort,ov)
win32event.WaitForSingleObject(ov.hEvent,win32event.INFINITE)
n = win32.DWORD(nb)
#print err,n.value
#time.sleep
#err = win32.GetOverlappedResult(self.hComPort,
self._overlappedWrite, ctypes.byref(n), True)
err = win32file.GetOverlappedResult(self.hComPort, ov, True)
#print err,ov.dword,ov.Offset
#if n.value != len(data):
# raise writeTimeoutError
return n.value
else:
return 0
def flushInput(self):
"""Clear input buffer, discarding all that is in the buffer."""
if not self.hComPort: raise portNotOpenError
win32.PurgeComm(self.hComPort, win32.PURGE_RXCLEAR |
win32.PURGE_RXABORT)
def flushOutput(self):
"""Clear output buffer, aborting the current output and
discarding all that is in the buffer."""
if not self.hComPort: raise portNotOpenError
win32.PurgeComm(self.hComPort, win32.PURGE_TXCLEAR |
win32.PURGE_TXABORT)
def sendBreak(self, duration=0.25):
"""Send break condition. Timed, returns to idle state after given
duration."""
if not self.hComPort: raise portNotOpenError
import time
win32.SetCommBreak(self.hComPort)
time.sleep(duration)
win32.ClearCommBreak(self.hComPort)
def setBreak(self, level=1):
"""Set break: Controls TXD. When active, to transmitting is possible."""
if not self.hComPort: raise portNotOpenError
if level:
win32.SetCommBreak(self.hComPort)
else:
win32.ClearCommBreak(self.hComPort)
def setRTS(self, level=1):
"""Set terminal status line: Request To Send"""
if not self.hComPort: raise portNotOpenError
if level:
self._rtsState = win32.RTS_CONTROL_ENABLE
win32.EscapeCommFunction(self.hComPort, win32.SETRTS)
else:
self._rtsState = win32.RTS_CONTROL_DISABLE
win32.EscapeCommFunction(self.hComPort, win32.CLRRTS)
def setDTR(self, level=1):
"""Set terminal status line: Data Terminal Ready"""
if not self.hComPort: raise portNotOpenError
if level:
self._dtrState = win32.DTR_CONTROL_ENABLE
win32.EscapeCommFunction(self.hComPort, win32.SETDTR)
else:
self._dtrState = win32.DTR_CONTROL_DISABLE
win32.EscapeCommFunction(self.hComPort, win32.CLRDTR)
def _GetCommModemStatus(self):
stat = win32.DWORD()
win32.GetCommModemStatus(self.hComPort, ctypes.byref(stat))
return stat.value
def getCTS(self):
"""Read terminal status line: Clear To Send"""
if not self.hComPort: raise portNotOpenError
return win32.MS_CTS_ON & self._GetCommModemStatus() != 0
def getDSR(self):
"""Read terminal status line: Data Set Ready"""
if not self.hComPort: raise portNotOpenError
return win32.MS_DSR_ON & self._GetCommModemStatus() != 0
def getRI(self):
"""Read terminal status line: Ring Indicator"""
if not self.hComPort: raise portNotOpenError
return win32.MS_RING_ON & self._GetCommModemStatus() != 0
def getCD(self):
"""Read terminal status line: Carrier Detect"""
if not self.hComPort: raise portNotOpenError
return win32.MS_RLSD_ON & self._GetCommModemStatus() != 0
# - - platform specific - - - -
def setXON(self, level=True):
"""Platform specific - set flow state."""
if not self.hComPort: raise portNotOpenError
if level:
win32.EscapeCommFunction(self.hComPort, win32.SETXON)
else:
win32.EscapeCommFunction(self.hComPort, win32.SETXOFF)
def outWaiting(self):
"""return how many characters the in the outgoing buffer"""
flags = win32.DWORD()
comstat = win32.COMSTAT()
if not win32.ClearCommError(self.hComPort, ctypes.byref(flags),
ctypes.byref(comstat)):
raise SerialException('call to ClearCommError failed')
return comstat.cbOutQue
# assemble Serial class with the platform specific implementation and the base
# for file-like behavior. for Python 2.6 and newer, that provide the new I/O
# library, derive from io.RawIOBase
try:
import io
except ImportError:
# classic version with our own file-like emulation
class Serial(Win32Serial, FileLike):
pass
else:
# io library present
class Serial(Win32Serial, io.RawIOBase):
pass
# Nur Testfunktion!!
if __name__ == '__main__':
s = Serial(0)
sys.stdout.write("%s\n" % s)
s = Serial()
sys.stdout.write("%s\n" % s)
s.baudrate = 19200
s.databits = 7
s.close()
s.port = 0
s.open()
sys.stdout.write("%s\n" % s)
from ctypes import *
#from ctypes.wintypes import HANDLE
from ctypes.wintypes import HRESULT
from ctypes.wintypes import BOOL
from ctypes.wintypes import LPCWSTR
_stdcall_libraries = {}
_stdcall_libraries['kernel32'] = WinDLL('kernel32')
from ctypes.wintypes import DWORD
from ctypes.wintypes import WORD
from ctypes.wintypes import BYTE
HANDLE = HRESULT
INVALID_HANDLE_VALUE = HANDLE(-1).value
class _SECURITY_ATTRIBUTES(Structure):
pass
LPSECURITY_ATTRIBUTES = POINTER(_SECURITY_ATTRIBUTES)
CreateEventW = _stdcall_libraries['kernel32'].CreateEventW
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]
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
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 = 4294967295L # Variable c_uint
EV_RLSD = 32 # Variable c_int
ERROR_IO_PENDING = 997 # Variable c_long
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 = 2147483648L # 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
ULONG_PTR = c_ulong
INFINITE = 0xFFFFFFFFL
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']
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