This is a patch for the serial IO routines used by the BSL on
posix/unix type systems. I've also made a few changes to error
messages to make them more informative, but the main differences are:
- Made it a non-fatal error if it can't figure out how to
convert an integer to a device file name. On unixlike systems,
the normal way to specify a serial port is by its entry
in /dev (since there isn't necessarily a fixed or agreed-upon
numbering of serial devices).
- Changed the baudrate enum code to avoid using a fixed
table of possible baud rates.
- Changed the openbsd case so that it does the expected thing
if you're running on PC hardware (com1 --> /dev/tty00, etc.)
- Deleted unused symbols from the module after initialization.
- Simplified some of the termios arithmetic slightly.
Wim.
Index: __init__.py
===================================================================
RCS file: /cvsroot/mspgcc/pybsl/serial/__init__.py,v
retrieving revision 1.1
diff -c -r1.1 __init__.py
*** __init__.py 4 Mar 2002 22:20:20 -0000 1.1
--- __init__.py 5 Apr 2004 01:16:11 -0000
***************
*** 5,11 ****
# (C)2001-2002 Chris Liechti <[email protected]>
# this is distributed under a free software license, see license.txt
! import sys, os, string
VERSION = string.split("$Revision: 1.1 $")[1] #extract CVS version
#chose an implementation, depending on os
--- 5,11 ----
# (C)2001-2002 Chris Liechti <[email protected]>
# this is distributed under a free software license, see license.txt
! import os, string
VERSION = string.split("$Revision: 1.1 $")[1] #extract CVS version
#chose an implementation, depending on os
***************
*** 16,21 ****
elif os.name == 'java':
from serialjava import *
else:
! raise "Sorry no implementation for your platform available."
#no "mac" implementation. someone want's to write it? i have no access to a
mac.
--- 16,21 ----
elif os.name == 'java':
from serialjava import *
else:
! raise "Sorry: no serial implementation for platform '%s'" % os.name
#no "mac" implementation. someone want's to write it? i have no access to a
mac.
Index: serialposix.py
===================================================================
RCS file: /cvsroot/mspgcc/pybsl/serial/serialposix.py,v
retrieving revision 1.3
diff -c -r1.3 serialposix.py
*** serialposix.py 9 Jan 2003 02:38:41 -0000 1.3
--- serialposix.py 5 Apr 2004 01:16:15 -0000
***************
*** 9,15 ****
# ftp://ftp.visi.com/users/grante/python/PosixSerial.py
# references: http://www.easysw.com/~mike/serial/serial.html
! import sys, os, fcntl, termios, struct, string, select
import serialutil
VERSION = string.split("$Revision: 1.3 $")[1] #extract CVS version
--- 9,15 ----
# ftp://ftp.visi.com/users/grante/python/PosixSerial.py
# references: http://www.easysw.com/~mike/serial/serial.html
! import sys, os, fcntl, termios, struct, string, select, re
import serialutil
VERSION = string.split("$Revision: 1.3 $")[1] #extract CVS version
***************
*** 42,48 ****
elif plat == 'openbsd3': #BSD (confirmed)
def device(port):
! return '/dev/ttyp%d' % port
elif plat[:3] == 'bsd' or \
plat[:6] == 'netbsd' or \
--- 42,48 ----
elif plat == 'openbsd3': #BSD (confirmed)
def device(port):
! return '/dev/tty%02d' % port
elif plat[:3] == 'bsd' or \
plat[:6] == 'netbsd' or \
***************
*** 71,86 ****
else:
#platform detection has failed...
info = "sys.platform = %r\nos.name = %r\nserialposix.py version = %s" %
(sys.platform, os.name, VERSION)
! print """send this information to the author of this module:
%s
also add the device name of the serial port and where the
counting starts for the first serial port.
e.g. 'first serial port: /dev/ttyS0'
! and with a bit luck you can get this module running...
! """
! raise Exception, "this module does not run on this platform, sorry."
#whats up with "aix", "beos", "sco", ....
#they should work, just need to know the device names.
--- 71,89 ----
else:
#platform detection has failed...
info = "sys.platform = %r\nos.name = %r\nserialposix.py version = %s" %
(sys.platform, os.name, VERSION)
! def device(port, info=info):
! print """don't know how to number ttys on this system.
! Use an explicit path (eg /dev/ttyS1) or send this information to
! the author of this module:
%s
also add the device name of the serial port and where the
counting starts for the first serial port.
e.g. 'first serial port: /dev/ttyS0'
! """ % info
! raise Exception, "can't handle numeric serial ports on this platform"
! del info
#whats up with "aix", "beos", "sco", ....
#they should work, just need to know the device names.
***************
*** 89,104 ****
# construct dictionaries for baud rate lookups
baudEnumToInt = {}
baudIntToEnum = {}
! for rate in (0,50,75,110,134,150,200,300,600,1200,1800,2400,4800,9600,
! 19200,38400,57600,115200,230400,460800,500000,576000,921600,
! 1000000,1152000,1500000,2000000,2500000,3000000,3500000,4000000
! ):
! try:
! i = eval('TERMIOS.B'+str(rate))
! baudEnumToInt[i]=rate
! baudIntToEnum[rate] = i
! except:
! pass
#load some constants for later use.
--- 92,106 ----
# construct dictionaries for baud rate lookups
baudEnumToInt = {}
baudIntToEnum = {}
! baudEnumPattern = re.compile('^B([0-9]+)$')
! for baudEnumName in dir(TERMIOS):
! match = baudEnumPattern.match(baudEnumName)
! if match:
! rate = int(match.group(1))
! baudEnumValue = getattr(TERMIOS, baudEnumName)
! baudEnumToInt[baudEnumValue]=rate
! baudIntToEnum[rate] = baudEnumValue
! del baudEnumPattern, baudEnumName, baudEnumValue, rate, match
#load some constants for later use.
***************
*** 168,177 ****
self.lflag = self.lflag &
~(TERMIOS.ICANON|TERMIOS.ECHO|TERMIOS.ECHOE|TERMIOS.ECHOK|TERMIOS.ECHONL|
TERMIOS.ECHOCTL|TERMIOS.ECHOKE|TERMIOS.ISIG|TERMIOS.IEXTEN) #|TERMIOS.ECHOPRT
self.oflag = self.oflag & ~(TERMIOS.OPOST)
if hasattr(TERMIOS, 'IUCLC'):
! self.iflag = self.iflag &
~(TERMIOS.INLCR|TERMIOS.IGNCR|TERMIOS.ICRNL|TERMIOS.IUCLC|TERMIOS.IGNBRK)
! else:
! self.iflag = self.iflag &
~(TERMIOS.INLCR|TERMIOS.IGNCR|TERMIOS.ICRNL|TERMIOS.IGNBRK)
#setup baudrate
try:
self.ispeed = self.ospeed = baudIntToEnum[baudrate]
--- 170,178 ----
self.lflag = self.lflag &
~(TERMIOS.ICANON|TERMIOS.ECHO|TERMIOS.ECHOE|TERMIOS.ECHOK|TERMIOS.ECHONL|
TERMIOS.ECHOCTL|TERMIOS.ECHOKE|TERMIOS.ISIG|TERMIOS.IEXTEN) #|TERMIOS.ECHOPRT
self.oflag = self.oflag & ~(TERMIOS.OPOST)
+ self.iflag = self.iflag &
~(TERMIOS.INLCR|TERMIOS.IGNCR|TERMIOS.ICRNL|TERMIOS.IGNBRK)
if hasattr(TERMIOS, 'IUCLC'):
! self.iflag = self.iflag & ~(TERMIOS.IUCLC)
#setup baudrate
try:
self.ispeed = self.ospeed = baudIntToEnum[baudrate]
***************
*** 390,392 ****
--- 391,398 ----
print repr(s.read(5))
print s.inWaiting()
del s
+
+ # remove unused references from the module
+ del sys, string, re
+ del plat
+
