stripped down msdos version Dave Haynes
not yet itegraded with automatic detection but direcly importable
diff --git a/pyserial/serial/sermsdos.py b/pyserial/serial/sermsdos.py
new file mode 100644
index 0000000..c16d1bd
--- /dev/null
+++ b/pyserial/serial/sermsdos.py
@@ -0,0 +1,229 @@
+# sermsdos.py
+#
+# History:
+#
+# 3rd September 2002 Dave Haynes
+# 1. First defined
+#
+# Although this code should run under the latest versions of
+# Python, on DOS-based platforms such as Windows 95 and 98,
+# it has been specifically written to be compatible with
+# PyDOS, available at:
+# http://www.python.org/ftp/python/wpy/dos.html
+#
+# PyDOS is a stripped-down version of Python 1.5.2 for
+# DOS machines. Therefore, in making changes to this file,
+# please respect Python 1.5.2 syntax. In addition, please
+# limit the width of this file to 60 characters.
+#
+# Note also that the modules in PyDOS contain fewer members
+# than other versions, so we are restricted to using the
+# following:
+#
+# In module os:
+# -------------
+# environ, chdir, getcwd, getpid, umask, fdopen, close,
+# dup, dup2, fstat, lseek, open, read, write, O_RDONLY,
+# O_WRONLY, O_RDWR, O_APPEND, O_CREAT, O_EXCL, O_TRUNC,
+# access, F_OK, R_OK, W_OK, X_OK, chmod, listdir, mkdir,
+# remove, rename, renames, rmdir, stat, unlink, utime,
+# execl, execle, execlp, execlpe, execvp, execvpe, _exit,
+# system.
+#
+# In module os.path:
+# ------------------
+# curdir, pardir, sep, altsep, pathsep, defpath, linesep.
+#
+
+import os
+import sys
+import string
+
+BAUD_RATES = {
+ 110: "11",
+ 150: "15",
+ 300: "30",
+ 600: "60",
+ 1200: "12",
+ 2400: "24",
+ 4800: "48",
+ 9600: "96",
+ 19200: "19"}
+
+(PARITY_NONE, PARITY_EVEN, PARITY_ODD, PARITY_MARK,
+PARITY_SPACE) = range(5)
+(STOPBITS_ONE, STOPBITS_ONEANDAHALF,
+STOPBITS_TWO) = (1, 1.5, 2)
+FIVEBITS, SIXBITS, SEVENBITS, EIGHTBITS = (5,6,7,8)
+(RETURN_ERROR, RETURN_BUSY, RETURN_RETRY, RETURN_READY,
+RETURN_NONE) = ('E', 'B', 'P', 'R', 'N')
+portNotOpenError = ValueError('port not open')
+
+class SerialException(Exception):
+ pass
+
+class Serial:
+ """
+ port: number of device; numbering starts at
+ zero. if everything fails, the user can
+ specify a device string, note that this
+ isn't portable any more
+ baudrate: baud rate
+ bytesize: number of databits
+ parity: enable parity checking
+ stopbits: number of stopbits
+ timeout: set a timeout (None for waiting forever)
+ xonxoff: enable software flow control
+ rtscts: enable RTS/CTS flow control
+ retry: DOS retry mode
+ """
+ def __init__(self,
+ port,
+ baudrate = 9600,
+ bytesize = EIGHTBITS,
+ parity = PARITY_NONE,
+ stopbits = STOPBITS_ONE,
+ timeout = None,
+ xonxoff = 0,
+ rtscts = 0,
+ retry = RETURN_RETRY
+ ):
+
+ if type(port) == type(''):
+ #strings are taken directly
+ self.portstr = port
+ else:
+ #numbers are transformed to a string
+ self.portstr = 'COM%d' % (port+1)
+
+ self.baud = BAUD_RATES[baudrate]
+ self.bytesize = str(bytesize)
+
+ if parity == PARITY_NONE:
+ self.parity = 'N'
+ elif parity == PARITY_EVEN:
+ self.parity = 'E'
+ elif parity == PARITY_ODD:
+ self.parity = 'O'
+ elif parity == PARITY_MARK:
+ self.parity = 'M'
+ elif parity == PARITY_SPACE:
+ self.parity = 'S'
+
+ self.stop = str(stopbits)
+ self.retry = retry
+ self.filename = "sermsdos.tmp"
+
+ self._config(self.portstr, self.baud, self.parity,
+ self.bytesize, self.stop, self.retry, self.filename)
+
+ def __del__(self):
+ self.close()
+
+ def close(self):
+ pass
+
+ def _config(self, port, baud, parity, data, stop, retry,
+ filename):
+ comString = string.join(("MODE ", port, ":"
+ , " BAUD= ", baud, " PARITY= ", parity
+ , " DATA= ", data, " STOP= ", stop, " RETRY= ",
+ retry, " > ", filename ), '')
+ os.system(comString)
+
+ def setBaudrate(self, baudrate):
+ self._config(self.portstr, BAUD_RATES[baudrate],
+ self.parity, self.bytesize, self.stop, self.retry,
+ self.filename)
+
+ def inWaiting(self):
+ """returns the number of bytes waiting to be read"""
+ raise NotImplementedError
+
+ def read(self, num = 1):
+ "Read num bytes from serial port"
+ handle = os.open(self.portstr,
+ os.O_RDONLY | os.O_BINARY)
+ # print os.fstat(handle)
+ rv = os.read(handle, num)
+ os.close(handle)
+ return rv
+
+ def write(self, s):
+ "Write string to serial port"
+ handle = os.open(self.portstr,
+ os.O_WRONLY | os.O_BINARY)
+ rv = os.write(handle, s)
+ os.close(handle)
+ return rv
+
+ def flushInput(self):
+ raise NotImplementedError
+
+ def flushOutput(self):
+ raise NotImplementedError
+
+ def sendBreak(self):
+ raise NotImplementedError
+
+ def setRTS(self,level=1):
+ """Set terminal status line"""
+ raise NotImplementedError
+
+ def setDTR(self,level=1):
+ """Set terminal status line"""
+ raise NotImplementedError
+
+ def getCTS(self):
+ """Eead terminal status line"""
+ raise NotImplementedError
+
+ def getDSR(self):
+ """Eead terminal status line"""
+ raise NotImplementedError
+
+ def getRI(self):
+ """Eead terminal status line"""
+ raise NotImplementedError
+
+ def getCD(self):
+ """Eead terminal status line"""
+ raise NotImplementedError
+
+ def readline(self, size=None):
+ raise NotImplementedError
+
+ def readlines(self, sizehint=None):
+ raise NotImplementedError
+
+ def xreadlines(self, sizehint=None):
+ raise NotImplementedError
+
+ def writelines(self, sequence):
+ raise NotImplementedError
+
+ def flush(self):
+ raise NotImplementedError
+
+ def __repr__(self):
+ return string.join(( "<Serial>: ", self.portstr
+ , self.baud, self.parity, self.bytesize, self.stop,
+ self.retry , self.filename), ' ')
+
+if __name__ == '__main__':
+ print __name__
+ s = Serial(0)
+ print s
+
+
+
+
+
+
+
+
+
+
+
+
+
