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# l=J2R\P/\Ҙo | k# #! python # # Backend for .NET/Mono (IronPython), .NET >= 2 # # This file is part of pySerial. https://github.com/pyserial/pyserial # (C) 2008-2015 Chris Liechti # # SPDX-License-Identifier: BSD-3-Clause import System import System.IO.Ports from serial.serialutil import * # must invoke function with byte array, make a helper to convert strings # to byte arrays sab = System.Array[System.Byte] def as_byte_array(string): return sab([ord(x) for x in string]) # XXX will require adaption when run with a 3.x compatible IronPython class Serial(SerialBase): """Serial port implementation for .NET/Mono.""" BAUDRATES = (50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600, 19200, 38400, 57600, 115200) 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.") if self.is_open: raise SerialException("Port is already open.") try: self._port_handle = System.IO.Ports.SerialPort(self.portstr) except Exception as msg: self._port_handle = None raise SerialException("could not open port %s: %s" % (self.portstr, msg)) # if RTS and/or DTR are not set before open, they default to True if self._rts_state is None: self._rts_state = True if self._dtr_state is None: self._dtr_state = True self._reconfigure_port() self._port_handle.Open() self.is_open = True if not self._dsrdtr: self._update_dtr_state() if not self._rtscts: self._update_rts_state() self.reset_input_buffer() def _reconfigure_port(self): """Set communication parameters on opened port.""" if not self._port_handle: raise SerialException("Can only operate on a valid port handle") #~ self._port_handle.ReceivedBytesThreshold = 1 if self._timeout is None: self._port_handle.ReadTimeout = System.IO.Ports.SerialPort.InfiniteTimeout else: self._port_handle.ReadTimeout = int(self._timeout * 1000) # if self._timeout != 0 and self._interCharTimeout is not None: # timeouts = (int(self._interCharTimeout * 1000),) + timeouts[1:] if self._write_timeout is None: self._port_handle.WriteTimeout = System.IO.Ports.SerialPort.InfiniteTimeout else: self._port_handle.WriteTimeout = int(self._write_timeout * 1000) # Setup the connection info. try: self._port_handle.BaudRate = self._baudrate except IOError as e: # catch errors from illegal baudrate settings raise ValueError(str(e)) if self._bytesize == FIVEBITS: self._port_handle.DataBits = 5 elif self._bytesize == SIXBITS: self._port_handle.DataBits = 6 elif self._bytesize == SEVENBITS: self._port_handle.DataBits = 7 elif self._bytesize == EIGHTBITS: self._port_handle.DataBits = 8 else: raise ValueError("Unsupported number of data bits: %r" % self._bytesize) if self._parity == PARITY_NONE: self._port_handle.Parity = getattr(System.IO.Ports.Parity, 'None') # reserved keyword in Py3k elif self._parity == PARITY_EVEN: self._port_handle.Parity = System.IO.Ports.Parity.Even