Hello All,
i'm tring to learn pyusb, i'm on a mac osx 10.6.4
i buid libusb from source with "log enabled"
googling i tried learn how to read data from an USB device (a joystick)
i find this code :
import usb
import usb.core
myVendorId = 1133
myProductId = 49685
dev = usb.core.find(idVendor=myVendorId, idProduct=myProductId)
dev.set_configuration()
test = dev.read(0x81,8)
but it gives me errors about "permision denied",
se the log :
>>> myVendorId = 1133
>>> myProductId = 49685
>>> dev = usb.core.find(idVendor=myVendorId, idProduct=myProductId)
libusb:debug [libusb_get_device_list]
libusb:info [process_new_device] allocating new device for location 0x1d000000
libusb:info [process_new_device] found device with address 1 at
001-05ac-8005-09-00
libusb:info [process_new_device] allocating new device for location 0x1d200000
libusb:info [process_new_device] found device with address 2 at
002-05ac-021b-00-00
libusb:info [process_new_device] allocating new device for location 0x3d000000
libusb:info [process_new_device] found device with address 1 at
001-05ac-8005-09-00
libusb:info [process_new_device] using existing device for location 0x3d100000
libusb:info [process_new_device] found device with address 2 at
002-046d-c215-00-00
libusb:info [process_new_device] allocating new device for location 0x5d000000
libusb:info [process_new_device] found device with address 1 at
001-05ac-8005-09-00
libusb:info [process_new_device] allocating new device for location 0x5d200000
libusb:info [process_new_device] found device with address 2 at
002-05ac-8240-00-00
libusb:info [process_new_device] allocating new device for location 0x7d000000
libusb:info [process_new_device] found device with address 1 at
001-05ac-8005-09-00
libusb:info [process_new_device] allocating new device for location 0x7d100000
libusb:warning [process_new_device] could not retrieve device descriptor:
device not responding. skipping device
libusb:debug [libusb_unref_device] destroy device 104.0
libusb:info [process_new_device] allocating new device for location 0xfd000000
libusb:info [process_new_device] found device with address 1 at
001-05ac-8006-09-00
libusb:info [process_new_device] allocating new device for location 0xfd400000
libusb:debug [discovered_devs_append] need to increase capacity
libusb:info [process_new_device] found device with address 2 at
002-05ac-8501-ff-ff
libusb:debug [libusb_get_device_descriptor]
libusb:debug [libusb_get_device_descriptor]
libusb:debug [libusb_get_device_descriptor]
libusb:debug [libusb_get_device_descriptor]
libusb:debug [libusb_unref_device] destroy device 29.1
libusb:debug [libusb_unref_device] destroy device 29.2
libusb:debug [libusb_unref_device] destroy device 61.1
libusb:debug [libusb_unref_device] destroy device 93.1
libusb:debug [libusb_unref_device] destroy device 93.2
libusb:debug [libusb_unref_device] destroy device 125.1
libusb:debug [libusb_unref_device] destroy device 253.1
libusb:debug [libusb_unref_device] destroy device 253.2
libusb:debug [libusb_close]
libusb:debug [usbi_remove_pollfd] remove fd 6
>>> dev.set_configuration()
libusb:debug [libusb_get_config_descriptor] index 0
libusb:debug [libusb_open] open 61.2
libusb:debug [usbi_add_pollfd] add fd 6 events 1
libusb:info [darwin_open] device open for access
libusb:debug [libusb_set_configuration] configuration 1
>>> test = dev.read(0x81,8)
libusb:debug [libusb_get_config_descriptor] index 0
libusb:debug [libusb_get_config_descriptor] index 0
libusb:debug [libusb_get_config_descriptor] index 0
libusb:debug [libusb_get_config_descriptor] index 0
libusb:debug [libusb_claim_interface] interface 0
libusb:error [darwin_claim_interface] USBInterfaceOpen: another process has
device opened for exclusive access
Traceback (most recent call last):
File "<stdin>", line 1, in <module>
File "/Users/sasha/Downloads/pyusb-1.0.0-a0/usb/core.py", line 617, in read
self._ctx.managed_claim_interface(self, intf)
File "/Users/sasha/Downloads/pyusb-1.0.0-a0/usb/core.py", line 104, in
managed_claim_interface
self.backend.claim_interface(self.handle, i)
File "/Users/sasha/Downloads/pyusb-1.0.0-a0/usb/_debug.py", line 53, in
do_trace
return f(*args, **named_args)
File "/Users/sasha/Downloads/pyusb-1.0.0-a0/usb/backend/libusb10.py", line
461, in claim_interface
_check(_lib.libusb_claim_interface(dev_handle, intf))
File "/Users/sasha/Downloads/pyusb-1.0.0-a0/usb/backend/libusb10.py", line
353, in _check
raise USBError(_str_error[retval.value])
usb.core.USBError: Access denied (insufficient permissions)
>>>
have you any clue on what i need to "read data" coming from such device ?
the output of :
system_profiler SPUSBDataType
is :
USB:
USB High-Speed Bus:
Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBEHCI
PCI Device ID: 0x27cc
PCI Revision ID: 0x0002
PCI Vendor ID: 0x8086
Bus Number: 0xfd
Built-in iSight:
Product ID: 0x8501
Vendor ID: 0x05ac (Apple Inc.)
Version: 1.89
Speed: Up to 480 Mb/sec
Manufacturer: Micron
Location ID: 0xfd400000
Current Available (mA): 500
Current Required (mA): 100
USB Bus:
Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBUHCI
PCI Device ID: 0x27c8
PCI Revision ID: 0x0002
PCI Vendor ID: 0x8086
Bus Number: 0x1d
Apple Internal Keyboard / Trackpad:
Product ID: 0x021b
Vendor ID: 0x05ac (Apple Inc.)
Version: 0.18
Speed: Up to 12 Mb/sec
Manufacturer: Apple Computer
Location ID: 0x1d200000
Current Available (mA): 500
Current Required (mA): 40
USB Bus:
Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBUHCI
PCI Device ID: 0x27c9
PCI Revision ID: 0x0002
PCI Vendor ID: 0x8086
Bus Number: 0x3d
Logitech Extreme 3D:
Product ID: 0xc215
Vendor ID: 0x046d (Logitech Inc.)
Version: 2.04
Speed: Up to 1.5 Mb/sec
Manufacturer: Logitech
Location ID: 0x3d100000
Current Available (mA): 500
Current Required (mA): 30
USB Bus:
Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBUHCI
PCI Device ID: 0x27ca
PCI Revision ID: 0x0002
PCI Vendor ID: 0x8086
Bus Number: 0x5d
IR Receiver:
Product ID: 0x8240
Vendor ID: 0x05ac (Apple Inc.)
Version: 1.10
Speed: Up to 12 Mb/sec
Manufacturer: Apple Computer, Inc.
Location ID: 0x5d200000
Current Available (mA): 500
Current Required (mA): 100
USB Bus:
Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBUHCI
PCI Device ID: 0x27cb
PCI Revision ID: 0x0002
PCI Vendor ID: 0x8086
Bus Number: 0x7d
Bluetooth USB Host Controller:
Product ID: 0x8205
Vendor ID: 0x05ac (Apple Inc.)
Version: 19.65
Speed: Up to 12 Mb/sec
Manufacturer: Apple Inc.
Location ID: 0x7d100000
Current Available (mA): 500
Current Required (mA): 0
the device i'm intersted on, is :
USB Bus:
Host Controller Location: Built-in USB
Host Controller Driver: AppleUSBUHCI
PCI Device ID: 0x27c9
PCI Revision ID: 0x0002
PCI Vendor ID: 0x8086
Bus Number: 0x3d
Logitech Extreme 3D:
Product ID: 0xc215
Vendor ID: 0x046d (Logitech Inc.)
Version: 2.04
Speed: Up to 1.5 Mb/sec
Manufacturer: Logitech
Location ID: 0x3d100000
Current Available (mA): 500
Current Required (mA): 30
thanks for any help!!!
regrads,
Massimo.
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