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#!/usr/bin/env python2
# blackwidow_enable.py
#
# Enables the M1-5 and FN keys to send scancodes on the Razer BlackWidow
# and BlackWidow Ultimate keyboards.
#
# Requires the PyUSB library.
#
# By Michael Fincham <michael@finch.am> 2012-03-05
# This code is released in to the public domain.
import sys
import usb
USB_VENDOR = 0x1532 # Razer
USB_PRODUCT = 0x011a # BlackWidow / BlackWidow Ultimate
#USB_PRODUCT = 0x010d # BlackWidow / BlackWidow Ultimate
#USB_PRODUCT = 0x011b # BlackWidow / BlackWidow Ultimate
# These values are from the USB HID 1.11 spec section 7.2.
# <http://www.usb.org/developers/devclass_docs/HID1_11.pdf>
USB_REQUEST_TYPE = 0x21 # Host To Device | Class | Interface
USB_REQUEST = 0x09 # SET_REPORT
# These values are from the manufacturer's driver.
USB_VALUE = 0x0300
USB_INDEX = 0x2
USB_INTERFACE = 2
# These magic bytes are also from the manufacturer's driver.
#USB_BUFFER = b"\x00\x00\x00\x00\x00\x01\x00\x04\x03\x00\x00\x00\x00\x00\
#\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
#\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
#\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
#\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x06\x00"
#
USB_BUFFER = b"\
\x00\x00\x00\x00\x00\x02\x00\x04\x02\x00\x00\x00\x00\x00\x00\x00\
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00\
\x00\x00\x00\x00\x00\x00\x00\x00\x04\x00"
def find_keyboard_device():
for bus in usb.busses():
for device in bus.devices:
if device.idVendor == USB_VENDOR and \
device.idProduct == USB_PRODUCT:
return device
def main():
device = find_keyboard_device()
if device == None:
sys.stderr.write("BlackWidow not found.\n")
sys.exit(1)
try:
handle = device.open()
interface = device.configurations[0].interfaces[USB_INTERFACE][0]
endpoint = interface.endpoints[0]
except:
sys.stderr.write("Could not select configuration endpoint.\n")
sys.exit(1)
try:
handle.detachKernelDriver(interface)
except usb.USBError:
pass # This is usually because the enabler was run before and the kernel is still detached
except Exception:
sys.stderr.write("A very unusual error happened trying to detch the kernel driver.\n")
sys.exit(1)
try:
handle.claimInterface(interface)
except:
sys.stderr.write("Unable to claim the configuration interface. Do you have the appropriate privileges?\n")
sys.exit(1)
result = 0
try:
result = handle.controlMsg(requestType=USB_REQUEST_TYPE,
request=USB_REQUEST,
value=USB_VALUE,
index=USB_INDEX,
buffer=USB_BUFFER)
except:
sys.stderr.write("Could not write the magic bytes to the BlackWidow.\n")
if result == len(USB_BUFFER):
sys.stderr.write("Configured BlackWidow.\n")
try:
handle.releaseInterface()
except:
sys.stderr.write("Unable to release interface.\n")
sys.exit(1)
sys.exit(0)
if __name__ == "__main__":
main()
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