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Set correct PATH_MAX on OSX. Version bump.

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This commit is contained in:
Kovid Goyal 2007-01-13 07:29:15 +00:00
parent 234750d487
commit 9349fabd77
2 changed files with 40 additions and 6 deletions
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2
src/libprs500/__init__.py
View File

@ -36,6 +36,6 @@ the following rule in C{/etc/udev/rules.d/90-local.rules} ::
You may have to adjust the GROUP and the location of the rules file to
suit your distribution.
"""
__version__ = "0.3.1"
__version__ = "0.3.2"
__docformat__ = "epytext"
__author__ = "Kovid Goyal <kovid@kovidgoyal.net>"

44
src/libprs500/libusb.py
View File

@ -1,21 +1,41 @@
## Copyright (C) 2006 Kovid Goyal kovid@kovidgoyal.net
## This program is free software; you can redistribute it and/or modify
## it under the terms of the GNU General Public License as published by
## the Free Software Foundation; either version 2 of the License, or
## (at your option) any later version.
##
## This program is distributed in the hope that it will be useful,
## but WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
## GNU General Public License for more details.
##
## You should have received a copy of the GNU General Public License along
## with this program; if not, write to the Free Software Foundation, Inc.,
## 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
This module provides a thin ctypes based wrapper around libusb.
"""
import sys
from ctypes import cdll, POINTER, byref, pointer, Structure, \
c_ubyte, c_ushort, c_int, c_char, c_void_p, c_byte
from errno import EBUSY, ENOMEM
iswindows = 'win32' in sys.platform.lower()
isosx = 'darwin' in sys.platform.lower()
_iswindows = 'win32' in sys.platform.lower()
_isosx = 'darwin' in sys.platform.lower()
_libusb_name = 'libusb.so'
if iswindows:
if _iswindows:
_libusb_name = 'libusb0'
elif isosx:
elif _isosx:
_libusb_name = 'libusb.dylib'
_libusb = cdll.LoadLibrary(_libusb_name)
# TODO: Need to set this in a platform dependednt way (limits.h in linux)
PATH_MAX = 4096
if iswindows:
if _iswindows:
PATH_MAX = 511
if _isosx:
PATH_MAX = 1024
class DeviceDescriptor(Structure):
_fields_ = [\
@ -92,6 +112,7 @@ class Error(Exception):
class Device(Structure):
def open(self):
""" Open device for use. Return a DeviceHandle. """
handle = _libusb.usb_open(byref(self))
if not handle:
raise Error("Cannot open device")
@ -129,9 +150,14 @@ class DeviceHandle(Structure):
]
def close(self):
""" Close this DeviceHandle """
_libusb.usb_close(byref(self))
def claim_interface(self, num):
"""
Claim interface C{num} on device.
Must be called before doing anything witht the device.
"""
ret = _libusb.usb_claim_interface(byref(self), num)
if -ret == ENOMEM:
raise Error("Insufficient memory to claim interface")
@ -183,6 +209,9 @@ class DeviceHandle(Structure):
size, timeout)
def bulk_read(self, endpoint, size, timeout=100):
"""
Read C{size} bytes via a bulk transfer from the device.
"""
ArrayType = c_byte * size
arr = ArrayType()
_libusb.usb_bulk_read.argtypes = [POINTER(DeviceHandle), c_int, \
@ -196,6 +225,9 @@ class DeviceHandle(Structure):
return tuple(arr)
def bulk_write(self, endpoint, bytes, timeout=100):
"""
Send C{bytes} to device via a bulk transfer.
"""
size = len(bytes)
ArrayType = c_byte * size
arr = ArrayType(*bytes)
@ -255,6 +287,7 @@ _libusb.usb_bulk_write.restype = c_int
_libusb.usb_init()
def busses():
""" Get list of USB busses present on system """
if _libusb.usb_find_busses() < 0:
raise Error('Unable to search for USB busses')
if _libusb.usb_find_devices() < 0:
@ -269,6 +302,7 @@ def busses():
def get_device_by_id(idVendor, idProduct):
""" Return a L{Device} by vendor and prduct ids """
buslist = busses()
for bus in buslist:
devices = bus.device_list