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Diffstat (limited to 'pyserial/serial/serialwin32.py')
| -rw-r--r-- | pyserial/serial/serialwin32.py | 274 |
1 files changed, 0 insertions, 274 deletions
diff --git a/pyserial/serial/serialwin32.py b/pyserial/serial/serialwin32.py deleted file mode 100644 index b0145cc..0000000 --- a/pyserial/serial/serialwin32.py +++ /dev/null @@ -1,274 +0,0 @@ -#! python -#serial driver for win32 -#see __init__.py -# -#(C) 2001-2002 Chris Liechti <cliechti@gmx.net> -# this is distributed under a free software license, see license.txt - -import win32file # The base COM port and file IO functions. -import win32event # We use events and the WaitFor[Single|Multiple]Objects functions. -import win32con # constants. -import sys, string -import serialutil - -VERSION = string.split("$Revision: 1.18 $")[1] #extract CVS version - -PARITY_NONE, PARITY_EVEN, PARITY_ODD = range(3) -STOPBITS_ONE, STOPBITS_TWO = (1, 2) -FIVEBITS, SIXBITS, SEVENBITS, EIGHTBITS = (5,6,7,8) - -portNotOpenError = ValueError('port not open') - -#from winbase.h. these should realy be in win32con -MS_CTS_ON = 16 -MS_DSR_ON = 32 -MS_RING_ON = 64 -MS_RLSD_ON = 128 - -class Serial(serialutil.FileLike): - def __init__(self, - port, #number of device, numbering starts at - #zero. if everything fails, the user - #can specify a device string, note - #that this isn't portable anymore - baudrate=9600, #baudrate - bytesize=EIGHTBITS, #number of databits - parity=PARITY_NONE, #enable parity checking - stopbits=STOPBITS_ONE, #number of stopbits - timeout=None, #set a timeout value, None for waiting forever - xonxoff=0, #enable software flow control - rtscts=0, #enable RTS/CTS flow control - ): - """initialize comm port""" - - self.timeout = timeout - - if type(port) == type(''): #strings are taken directly - self.portstr = port - else: - self.portstr = 'COM%d' % (port+1) #numbers are transformed to a string - #self.portstr = '\\\\.\\COM%d' % (port+1) #WIN NT format?? - - try: - self.hComPort = win32file.CreateFile(self.portstr, - win32con.GENERIC_READ | win32con.GENERIC_WRITE, - 0, # exclusive access - None, # no security - win32con.OPEN_EXISTING, - win32con.FILE_ATTRIBUTE_NORMAL | win32con.FILE_FLAG_OVERLAPPED, - None) - except Exception, msg: - self.hComPort = None #'cause __del__ is called anyway - raise serialutil.SerialException, "could not open port: %s" % msg - # Setup a 4k buffer - win32file.SetupComm(self.hComPort, 4096, 4096) - - #Save original timeout values: - self.orgTimeouts = win32file.GetCommTimeouts(self.hComPort) - - #Set Windows timeout values - #timeouts is a tuple with the following items: - #(ReadIntervalTimeout,ReadTotalTimeoutMultiplier, - # ReadTotalTimeoutConstant,WriteTotalTimeoutMultiplier, - # WriteTotalTimeoutConstant) - if timeout is None: - timeouts = (0, 0, 0, 0, 0) - elif timeout == 0: - timeouts = (win32con.MAXDWORD, 0, 0, 0, 0) - else: - #timeouts = (0, 0, 0, 0, 0) #timeouts are done with WaitForSingleObject - #timeouts = (win32con.MAXDWORD, 0, 0, 0, 1000) #doesn't works - #timeouts = (timeout*1000, 0, timeout*1000, 0, 0) - timeouts = (0, 0, int(timeout*1000), 0, int(timeout*1000)) - win32file.SetCommTimeouts(self.hComPort, timeouts) - - #win32file.SetCommMask(self.hComPort, win32file.EV_RXCHAR | win32file.EV_TXEMPTY | - # win32file.EV_RXFLAG | win32file.EV_ERR) - win32file.SetCommMask(self.hComPort, - win32file.EV_RXCHAR | win32file.EV_RXFLAG | win32file.EV_ERR) - #win32file.SetCommMask(self.hComPort, win32file.EV_ERR) - - # Setup the connection info. - # Get state and modify it: - comDCB = win32file.GetCommState(self.hComPort) - comDCB.BaudRate = baudrate - - if bytesize == FIVEBITS: - comDCB.ByteSize = 5 - elif bytesize == SIXBITS: - comDCB.ByteSize = 6 - elif bytesize == SEVENBITS: - comDCB.ByteSize = 7 - elif bytesize == EIGHTBITS: - comDCB.ByteSize = 8 - - if parity == PARITY_NONE: - comDCB.Parity = win32file.NOPARITY - comDCB.fParity = 0 # Dis/Enable Parity Check - elif parity == PARITY_EVEN: - comDCB.Parity = win32file.EVENPARITY - comDCB.fParity = 1 # Dis/Enable Parity Check - elif parity == PARITY_ODD: - comDCB.Parity = win32file.ODDPARITY - comDCB.fParity = 1 # Dis/Enable Parity Check - - if stopbits == STOPBITS_ONE: - comDCB.StopBits = win32file.ONESTOPBIT - elif stopbits == STOPBITS_TWO: - comDCB.StopBits = win32file.TWOSTOPBITS - comDCB.fBinary = 1 # Enable Binary Transmission - # Char. w/ Parity-Err are replaced with 0xff (if fErrorChar is set to TRUE) - if rtscts: - comDCB.fRtsControl = win32file.RTS_CONTROL_HANDSHAKE - comDCB.fDtrControl = win32file.DTR_CONTROL_HANDSHAKE - else: - comDCB.fRtsControl = win32file.RTS_CONTROL_ENABLE - comDCB.fDtrControl = win32file.DTR_CONTROL_ENABLE - comDCB.fOutxCtsFlow = rtscts - comDCB.fOutxDsrFlow = rtscts - comDCB.fOutX = xonxoff - comDCB.fInX = xonxoff - comDCB.fNull = 0 - comDCB.fErrorChar = 0 - comDCB.fAbortOnError = 0 - - win32file.SetCommState(self.hComPort, comDCB) - - # Clear buffers: - # Remove anything that was there - win32file.PurgeComm(self.hComPort, - win32file.PURGE_TXCLEAR | win32file.PURGE_TXABORT | - win32file.PURGE_RXCLEAR | win32file.PURGE_RXABORT) - - #print win32file.ClearCommError(self.hComPort) #flags, comState = - - #self.overlapped = win32file.OVERLAPPED() - #self.overlapped.hEvent = win32event.CreateEvent(None, 0, 0, None) - - def __del__(self): - self.close() - - def close(self): - """close port""" - if self.hComPort: - #Wait until data is transmitted, but not too long... (Timeout-Time) - #while 1: - # flags, comState = win32file.ClearCommError(hComPort) - # if comState.cbOutQue <= 0 or calcTimeout(startTime) > timeout: - # break - - #~ self.setRTS(0) #causes problem if HW handshake is enabled - #~ self.setDTR(0) - #Clear buffers: - win32file.PurgeComm(self.hComPort, - win32file.PURGE_TXCLEAR | win32file.PURGE_TXABORT | - win32file.PURGE_RXCLEAR | win32file.PURGE_RXABORT) - #Restore original timeout values: - win32file.SetCommTimeouts(self.hComPort, self.orgTimeouts) - #Close COM-Port: - win32file.CloseHandle(self.hComPort) - self.hComPort = None - - def setBaudrate(self, baudrate): - """change baudrate after port is open""" - if not self.hComPort: raise portNotOpenError - # Setup the connection info. - # Get state and modify it: - comDCB = win32file.GetCommState(self.hComPort) - comDCB.BaudRate = baudrate - win32file.SetCommState(self.hComPort, comDCB) - - def inWaiting(self): - """returns the number of bytes waiting to be read""" - flags, comstat = win32file.ClearCommError(self.hComPort) - return comstat.cbInQue - - def read(self, size=1): - "read num bytes from serial port" - if not self.hComPort: raise portNotOpenError - read = '' - if size > 0: - overlapped = win32file.OVERLAPPED() - overlapped.hEvent = win32event.CreateEvent(None, 1, 0, None) - if self.timeout == 0: - flags, comstat = win32file.ClearCommError(self.hComPort) - n = min(comstat.cbInQue, size) - if n > 0: - rc, buf = win32file.ReadFile(self.hComPort, win32file.AllocateReadBuffer(n), overlapped) - win32event.WaitForSingleObject(overlapped.hEvent, win32event.INFINITE) - read = str(buf) - else: - flags, comstat = win32file.ClearCommError(self.hComPort) - rc, buf = win32file.ReadFile(self.hComPort, win32file.AllocateReadBuffer(size), overlapped) - n = win32file.GetOverlappedResult(self.hComPort, overlapped, 1) - read = str(buf[:n]) - return read - - def write(self, s): - "write string to serial port" - if not self.hComPort: raise portNotOpenError - #print repr(s), - overlapped = win32file.OVERLAPPED() - overlapped.hEvent = win32event.CreateEvent(None, 1, 0, None) - err, n = win32file.WriteFile(self.hComPort, s, overlapped) - if err: #will be ERROR_IO_PENDING: - # Wait for the write to complete. - win32event.WaitForSingleObject(overlapped.hEvent, win32event.INFINITE) - - def flushInput(self): - if not self.hComPort: raise portNotOpenError - win32file.PurgeComm(self.hComPort, win32file.PURGE_RXCLEAR | win32file.PURGE_RXABORT) - - def flushOutput(self): - if not self.hComPort: raise portNotOpenError - win32file.PurgeComm(self.hComPort, win32file.PURGE_TXCLEAR | win32file.PURGE_TXABORT) - - def sendBreak(self): - if not self.hComPort: raise portNotOpenError - import time - win32file.SetCommBreak(self.hComPort) - #TODO: how to set the correct duration?? - time.sleep(0.020) - win32file.ClearCommBreak(self.hComPort) - - def setRTS(self,level=1): - """set terminal status line""" - if not self.hComPort: raise portNotOpenError - if level: - win32file.EscapeCommFunction(self.hComPort, win32file.SETRTS) - else: - win32file.EscapeCommFunction(self.hComPort, win32file.CLRRTS) - - def setDTR(self,level=1): - """set terminal status line""" - if not self.hComPort: raise portNotOpenError - if level: - win32file.EscapeCommFunction(self.hComPort, win32file.SETDTR) - else: - win32file.EscapeCommFunction(self.hComPort, win32file.CLRDTR) - - def getCTS(self): - """read terminal status line""" - if not self.hComPort: raise portNotOpenError - return MS_CTS_ON & win32file.GetCommModemStatus(self.hComPort) != 0 - - def getDSR(self): - """read terminal status line""" - if not self.hComPort: raise portNotOpenError - return MS_DSR_ON & win32file.GetCommModemStatus(self.hComPort) != 0 - - def getRI(self): - """read terminal status line""" - if not self.hComPort: raise portNotOpenError - return MS_RING_ON & win32file.GetCommModemStatus(self.hComPort) != 0 - - def getCD(self): - """read terminal status line""" - if not self.hComPort: raise portNotOpenError - return MS_RLSD_ON & win32file.GetCommModemStatus(self.hComPort) != 0 - -#Nur Testfunktion!! -if __name__ == '__main__': - print __name__ - s = Serial(0) - |