RAHHH

backend/lib/python3.12/site-packages/twisted/internet/_posixserialport.py

@@ -0,0 +1,80 @@
+# Copyright (c) Twisted Matrix Laboratories.
+# See LICENSE for details.
+
+
+"""
+Serial Port Protocol
+"""
+
+
+# dependent on pyserial ( http://pyserial.sf.net/ )
+# only tested w/ 1.18 (5 Dec 2002)
+from serial import EIGHTBITS, PARITY_NONE, STOPBITS_ONE
+
+from twisted.internet import abstract, fdesc
+from twisted.internet.serialport import BaseSerialPort
+
+
+class SerialPort(BaseSerialPort, abstract.FileDescriptor):
+    """
+    A select()able serial device, acting as a transport.
+    """
+
+    connected = 1
+
+    def __init__(
+        self,
+        protocol,
+        deviceNameOrPortNumber,
+        reactor,
+        baudrate=9600,
+        bytesize=EIGHTBITS,
+        parity=PARITY_NONE,
+        stopbits=STOPBITS_ONE,
+        timeout=0,
+        xonxoff=0,
+        rtscts=0,
+    ):
+        abstract.FileDescriptor.__init__(self, reactor)
+        self._serial = self._serialFactory(
+            deviceNameOrPortNumber,
+            baudrate=baudrate,
+            bytesize=bytesize,
+            parity=parity,
+            stopbits=stopbits,
+            timeout=timeout,
+            xonxoff=xonxoff,
+            rtscts=rtscts,
+        )
+        self.reactor = reactor
+        self.flushInput()
+        self.flushOutput()
+        self.protocol = protocol
+        self.protocol.makeConnection(self)
+        self.startReading()
+
+    def fileno(self):
+        return self._serial.fd
+
+    def writeSomeData(self, data):
+        """
+        Write some data to the serial device.
+        """
+        return fdesc.writeToFD(self.fileno(), data)
+
+    def doRead(self):
+        """
+        Some data's readable from serial device.
+        """
+        return fdesc.readFromFD(self.fileno(), self.protocol.dataReceived)
+
+    def connectionLost(self, reason):
+        """
+        Called when the serial port disconnects.
+
+        Will call C{connectionLost} on the protocol that is handling the
+        serial data.
+        """
+        abstract.FileDescriptor.connectionLost(self, reason)
+        self._serial.close()
+        self.protocol.connectionLost(reason)