prototype of .NET/Mono backend

git-svn-id: http://svn.code.sf.net/p/pyserial/code/trunk/pyserial@179 f19166aa-fa4f-0410-85c2-fa1106f25c8a

1 files changed, 215 insertions, 0 deletions

diff --git a/serial/serialcli.py b/serial/serialcli.py
new file mode 100644
index 0000000..ac6bd68
--- /dev/null
+++ b/serial/serialcli.py
@@ -0,0 +1,215 @@
+#! python
+#Python Serial Port Extension for Win32, Linux, BSD, Jython and .NET/Mono
+#serial driver for .NET/Mono (IronPython), .NET >= 2
+#see __init__.py
+#
+#(C) 2008 Chris Liechti <cliechti@gmx.net>
+# this is distributed under a free software license, see license.txt
+
+import System.IO.Ports
+from serialutil import *
+
+def device(portnum):
+    """Turn a port number into a device name"""
+    return System.IO.Ports.SerialPort.GetPortNames()[portnum]
+
+class Serial(SerialBase):
+    """Serial port implemenation 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.")
+        self._port_handle = None
+        try:
+            self._port_handle = System.IO.Ports.SerialPort(self.portstr)
+        except Exception, msg:
+            raise SerialException("could not open port %s: %s" % (self.portstr, msg))
+
+        self._reconfigurePort()
+        self._port_handle.Open()
+        self._isOpen = True
+
+    def _reconfigurePort(self):
+        """Set commuication parameters on opened port."""
+        if not self._port_handle:
+            raise SerialException("Can only operate on a valid port handle")
+        
+        self.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._writeTimeout is None:
+            pass
+        else:
+            self._port_handle.WriteTimeout = int(self._writeTimeout*1000)
+
+
+        # Setup the connection info.
+        self._port_handle.BaudRate = self._baudrate
+
+        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       = System.IO.Ports.Parity.None
+        elif self._parity == PARITY_EVEN:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Even
+        elif self._parity == PARITY_ODD:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Odd
+        elif self._parity == PARITY_MARK:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Mark
+        elif self._parity == PARITY_SPACE:
+            self._port_handle.Parity       = System.IO.Ports.Parity.Space
+        else:
+            raise ValueError("Unsupported parity mode: %r" % self._parity)
+
+        if self._stopbits == STOPBITS_ONE:
+            self._port_handle.StopBits     = System.IO.Ports.StopBits.One
+        elif self._stopbits == STOPBITS_TWO:
+            self._port_handle.StopBits     = System.IO.Ports.StopBits.Two
+        else:
+            raise ValueError("Unsupported number of stop bits: %r" % self._stopbits)
+        
+        if self._rtscts and self._xonxoff:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.RequestToSendXOnXOff
+        elif self._rtscts:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.RequestToSend
+        elif self._xonxoff:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.XOnXOff
+        else:
+            self._port_handle.Handshake  = System.IO.Ports.Handshake.None
+
+    #~ def __del__(self):
+        #~ self.close()
+
+    def close(self):
+        """Close port"""
+        if self._isOpen:
+            if self._port_handle:
+                try:
+                    self.Close()
+                except System.IO.Ports.InvalidOperationException:
+                    # ignore errors. can happen for unplugged USB serial devices
+                    pass
+                self._port_handle = None
+            self._isOpen = False
+
+    def makeDeviceName(self, port):
+        return device(port)
+
+    #  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -  -
+    
+    def inWaiting(self):
+        """Return the number of characters currently in the input buffer."""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.BytesToRead
+
+    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._port_handle: raise portNotOpenError
+        data = []
+        while size:
+            data.append(self._port_handle.ReadByte())
+            size -= 1
+        return ''.join(data)
+
+    def write(self, data):
+        """Output the given string over the serial port."""
+        if not self._port_handle: raise portNotOpenError
+        if not isinstance(data, str):
+            raise TypeError('expected str, got %s' % type(data))
+        self._port_handle.Write(data)
+
+    def flushInput(self):
+        """Clear input buffer, discarding all that is in the buffer."""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.DiscardInBuffer()
+
+    def flushOutput(self):
+        """Clear output buffer, aborting the current output and
+        discarding all that is in the buffer."""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.DiscardOutBuffer()
+
+    def sendBreak(self, duration=0.25):
+        """Send break condition. Timed, returns to idle state after given duration."""
+        if not self._port_handle: raise portNotOpenError
+        import time
+        self._port_handle.BreakState = True
+        time.sleep(duration)
+        self._port_handle.BreakState = False
+
+    def setBreak(self, level=1):
+        """Set break: Controls TXD. When active, to transmitting is possible."""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.BreakState = level
+
+    def setRTS(self, level=1):
+        """Set terminal status line: Request To Send"""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.RtsEnable = level
+
+    def setDTR(self, level=1):
+        """Set terminal status line: Data Terminal Ready"""
+        if not self._port_handle: raise portNotOpenError
+        self._port_handle.DtrEnable = level
+
+    def getCTS(self):
+        """Read terminal status line: Clear To Send"""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.CtsHolding
+
+    def getDSR(self):
+        """Read terminal status line: Data Set Ready"""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.DsrHolding
+
+    #~ def getRI(self):
+        #~ """Read terminal status line: Ring Indicator"""
+        #~ if not self._port_handle: raise portNotOpenError
+        #~ return self._port_handle.XXX
+
+    def getCD(self):
+        """Read terminal status line: Carrier Detect"""
+        if not self._port_handle: raise portNotOpenError
+        return self._port_handle.CDHolding
+
+    # - - platform specific - - - -
+
+#Nur Testfunktion!!
+if __name__ == '__main__':
+    s = Serial(0)
+    print s
+    
+    s = Serial()
+    print s
+    
+    
+    s.baudrate = 19200
+    s.databits = 7
+    s.close()
+    s.port = 0
+    s.open()
+    print s
+