/usr/lib/python3/dist-packages/pyvisa-py/protocols/usbutil.py is in python3-pyvisa-py 0.2-2.
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"""
pyvisa-py.usb
~~~~~~~~~~~~~
Serial Session implementation using PyUSB.
See the following link for more information about USB.
http://www.beyondlogic.org/usbnutshell/usb5.shtml
This file is an offspring of the Lantz Project.
:copyright: 2014 by PyVISA-py Authors, see AUTHORS for more details.
:license: MIT, see LICENSE for more details.
"""
from __future__ import division, unicode_literals, print_function, absolute_import
from fnmatch import fnmatch
import usb
from usb.util import (get_string as usb_get_string,
find_descriptor as usb_find_desc)
ClassCodes = {
0x00: ('Device', 'Use class information in the Interface Descriptors'),
0x01: ('Interface', 'Audio'),
0x02: ('Both', 'Communications and CDC Control'),
0x03: ('Interface', 'HID (Human Interface Device)'),
0x05: ('Interface', 'Physical'),
0x06: ('Interface', 'Image'),
0x07: ('Interface', 'Printer'),
0x08: ('Interface', 'Mass Storage'),
0x09: ('Device', 'Hub'),
0x0A: ('Interface', 'CDC-Data'),
0x0B: ('Interface', 'Smart Card'),
0x0D: ('Interface', 'Content Security'),
0x0E: ('Interface', 'Video'),
0x0F: ('Interface', 'Personal Healthcare'),
0x10: ('Interface', 'Audio/Video Devices'),
0xDC: ('Both', 'Diagnostic Device'),
0xE0: ('Interface', 'Wireless Controller'),
0xEF: ('Both', 'Miscellaneous'),
0xFE: ('Interface', 'Application Specific'),
0xFF: ('Both', 'Vendor Specific')
}
# None is 0xxx
AllCodes = {
(0x00, 0x00, 0x00): 'Use class code info from Interface Descriptors',
(0x01, None, None): 'Audio device',
(0x02, None, None): 'Communication device class',
(0x03, None, None): 'HID device class',
(0x05, None, None): 'Physical device class',
(0x06, 0x01, 0x01): 'Still Imaging device',
(0x07, None, None): 'Printer device',
(0x08, None, None): 'Mass Storage device',
(0x09, 0x00, 0x00): 'Full speed Hub',
(0x09, 0x00, 0x01): 'Hi-speed hub with single TT',
(0x09, 0x00, 0x02): 'Hi-speed hub with multiple TTs',
(0x0A, None, None): 'CDC data device',
(0x0B, None, None): 'Smart Card device',
(0x0D, 0x00, 0x00): 'Content Security device',
(0x0E, None, None): 'Video device',
(0x0F, None, None): 'Personal Healthcare device',
(0x10, 0x01, 0x00): 'Control Interface',
(0x10, 0x02, 0x00): 'Data Video Streaming Interface',
(0x10, 0x03, 0x00): 'VData Audio Streaming Interface',
(0xDC, 0x01, 0x01): 'USB2 Compliance Device',
(0xE0, 0x01, 0x01): 'Bluetooth Programming Interface.',
(0xE0, 0x01, 0x02): 'UWB Radio Control Interface.',
(0xE0, 0x01, 0x03): 'Remote NDIS',
(0xE0, 0x01, 0x04): 'Bluetooth AMP Controller.',
(0xE0, 0x2, 0x01): 'Host Wire Adapter Control/Data interface.',
(0xE0, 0x2, 0x02): 'Device Wire Adapter Control/Data interface.',
(0xE0, 0x2, 0x03): 'Device Wire Adapter Isochronous interface.',
(0xEF, 0x01, 0x01): 'Active Sync device.',
(0xEF, 0x01, 0x02): 'Palm Sync. This class code can be used in either '
'Device or Interface Descriptors.',
(0xEF, 0x02, 0x01): 'Interface Association Descriptor.',
(0xEF, 0x02, 0x02): 'Wire Adapter Multifunction Peripheral programming interface.',
(0xEF, 0x03, 0x01): 'Cable Based Association Framework.',
(0xEF, 0x04, 0x01): 'RNDIS over Ethernet. Connecting a host to the Internet via '
'Ethernet mobile device. The device appears to the host as an'
'Ethernet gateway device. This class code may only be used in '
'Interface Descriptors.',
(0xEF, 0x04, 0x02): 'RNDIS over WiFi. Connecting a host to the Internet via WiFi '
'enabled mobile device. The device represents itself to the host'
'as an 802.11 compliant network device. This class code may only'
'be used in Interface Descriptors.',
(0xEF, 0x04, 0x03): 'RNDIS over WiMAX. Connecting a host to the Internet via WiMAX '
'enabled mobile device. The device is represented to the host '
'as an 802.16 network device. This class code may only be used '
'in Interface Descriptors.',
(0xEF, 0x04, 0x04): 'RNDIS over WWAN. Connecting a host to the Internet via a device '
'using mobile broadband, i.e. WWAN (GSM/CDMA). This class code may '
'only be used in Interface Descriptors.',
(0xEF, 0x04, 0x05): 'RNDIS for Raw IPv4. Connecting a host to the Internet using raw '
'IPv4 via non-Ethernet mobile device. Devices that provide raw '
'IPv4, not in an Ethernet packet, may use this form to in lieu of '
'other stock types. '
'This class code may only be used in Interface Descriptors.',
(0xEF, 0x04, 0x06): 'RNDIS for Raw IPv6. Connecting a host to the Internet using raw '
'IPv6 via non-Ethernet mobile device. Devices that provide raw '
'IPv6, not in an Ethernet packet, may use this form to in lieu of '
'other stock types. '
'This class code may only be used in Interface Descriptors.',
(0xEF, 0x04, 0x07): 'RNDIS for GPRS. Connecting a host to the Internet over GPRS mobile '
'device using the device’s cellular radio.',
(0xEF, 0x05, 0x00): 'USB3 Vision Control Interface',
(0xEF, 0x05, 0x01): 'USB3 Vision Event Interface',
(0xEF, 0x05, 0x02): 'USB3 Vision Streaming Interface',
(0xFE, 0x01, 0x01): 'Device Firmware Upgrade.',
(0xFE, 0x02, 0x00): 'IRDA Bridge device.',
(0xFE, 0x03, 0x00): 'USB Test and Measurement Device.',
(0xFE, 0x03, 0x01): 'USB Test and Measurement Device conforming to the USBTMC USB488 Subclass',
(0xFF, None, None): 'Vendor specific'
}
class LantzUSBTimeoutError(usb.core.USBError):
pass
def ep_attributes(ep):
c = ep.bmAttributes
attrs = []
tp = c & usb.ENDPOINT_TYPE_MASK
if tp == usb.ENDPOINT_TYPE_CONTROL:
attrs.append('Control')
elif tp == usb.ENDPOINT_TYPE_ISOCHRONOUS:
attrs.append('Isochronous')
elif tp == usb.ENDPOINT_TYPE_BULK:
attrs.append('Bulk')
elif tp == usb.ENDPOINT_TYPE_INTERRUPT:
attrs.append('Interrupt')
sync = (c & 12) >> 2
if sync == 0:
attrs.append('No sync')
elif sync == 1:
attrs.append('Async')
elif sync == 2:
attrs.append('Adaptive')
elif sync == 3:
attrs.append('Sync')
usage = (c & 48) >> 4
if usage == 0:
attrs.append('Data endpoint')
elif usage == 1:
attrs.append('Feedback endpoint')
elif usage == 2:
attrs.append('Subordinate Feedback endpoint')
elif usage == 3:
attrs.append('Reserved')
return ', '.join(attrs)
def find_devices(vendor=None, product=None, serial_number=None, custom_match=None, **kwargs):
"""Find connected USB devices matching certain keywords.
Wildcards can be used for vendor, product and serial_number.
:param vendor: name or id of the vendor (manufacturer)
:param product: name or id of the product
:param serial_number: serial number.
:param custom_match: callable returning True or False that takes a device as only input.
:param kwargs: other properties to match. See usb.core.find
:return:
"""
kwargs = kwargs or {}
attrs = {}
if isinstance(vendor, str):
attrs['manufacturer'] = vendor
elif vendor is not None:
kwargs['idVendor'] = vendor
if isinstance(product, str):
attrs['product'] = product
elif product is not None:
kwargs['idProduct'] = product
if serial_number:
attrs['serial_number'] = str(serial_number)
if attrs:
def cm(dev):
if custom_match is not None and not custom_match(dev):
return False
for attr, pattern in attrs.items():
if not fnmatch(getattr(dev, attr).lower(), pattern.lower()):
return False
return True
else:
cm = custom_match
return usb.core.find(find_all=True, custom_match=cm, **kwargs)
def find_interfaces(device, **kwargs):
"""
:param device:
:return:
"""
interfaces = []
try:
for cfg in device:
try:
interfaces.extend(usb_find_desc(cfg, find_all=True, **kwargs))
except:
pass
except:
pass
return interfaces
def find_endpoint(interface, direction, type):
ep = usb_find_desc(interface, custom_match=
lambda e: usb.util.endpoint_direction(e.bEndpointAddress) == direction and
usb.util.endpoint_type(e.bmAttributes) == type
)
return ep
def _patch_endpoint(ep, log_func=print):
_read = ep.read
_write = ep.write
def new_read(*args, **kwargs):
log_func('---')
log_func('reading from {}'.format(ep.bEndpointAddress))
log_func('args: {}'.format(args))
log_func('kwargs: {}'.format(kwargs))
ret = _read(*args, **kwargs)
log_func('returned', ret)
log_func('---')
return ret
def new_write(*args, **kwargs):
log_func('---')
log_func('writing to {}'.format(ep.bEndpointAddress))
log_func('args: {}'.format(args))
log_func('kwargs: {}'.format(kwargs))
ret = _write(*args, **kwargs)
log_func('returned', ret)
log_func('---')
return ret
ep.read = new_read
ep.write = new_write
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