Logitech Wireless Keyboard for Wii
From MythTV Official Wiki
Revision as of 08:55, 4 December 2009 by Lorcap (talk | contribs) (→Installation: Missing apostropes in command line)
The wireless keyboard for the video game console Wii™ produced by Logitech, Inc., is a cheap input device ideal to enter short text (such as web search strings, quick email replies, chat messages, etc.). It features:
- compact size (30x16.5x2cm)
- full-size keys
- six dedicated keys
- 2.4GHz wireless connection
- slot on the back side to store the connection USB key
- mechanical power switch to save up battery energy
It misses an important key, though, the left Alt_L key.
Installation
Provided that kernel module usbhid is loaded and HAL is running, the keyboard is automatically recognised as Logitech USB Wireless HID Receiver as soon as the USB key is attached.
lorcap ~ $ lshal > /tmp/hal
USB key receiver inserted. wait 2-3 seconds to settle...
lorcap ~ $ lshal > /tmp/hal-wii
lorcap ~ $ diff --old-line-format="" \
--unchanged-line-format="" \
--new-line-format="%L" \
/tmp/hal /tmp/hal-wii \
| egrep -v "^Dump"
udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial'
info.linux.driver = 'usb' (string)
info.parent = '/org/freedesktop/Hal/devices/usb_device_1d6b_1_0000_00_1d_0' (string)
info.product = 'USB Wireless HID Receiver' (string)
info.subsystem = 'usb_device' (string)
info.udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial' (string)
info.vendor = 'Logitech, Inc.' (string)
linux.device_file = '/dev/bus/usb/002/003' (string)
linux.hotplug_type = 2 (0x2) (int)
linux.subsystem = 'usb' (string)
linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1' (string)
usb_device.bus_number = 2 (0x2) (int)
usb_device.can_wake_up = true (bool)
usb_device.configuration_value = 1 (0x1) (int)
usb_device.device_class = 0 (0x0) (int)
usb_device.device_protocol = 0 (0x0) (int)
usb_device.device_revision_bcd = 288 (0x120) (int)
usb_device.device_subclass = 0 (0x0) (int)
usb_device.is_self_powered = false (bool)
usb_device.linux.device_number = 3 (0x3) (int)
usb_device.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1' (string)
usb_device.max_power = 100 (0x64) (int)
usb_device.num_configurations = 1 (0x1) (int)
usb_device.num_interfaces = 1 (0x1) (int)
usb_device.num_ports = 0 (0x0) (int)
usb_device.product = 'USB Wireless HID Receiver' (string)
usb_device.product_id = 51889 (0xcab1) (int)
usb_device.speed = 1.5 (1.5) (double)
usb_device.vendor = 'Logitech, Inc.' (string)
usb_device.vendor_id = 1133 (0x46d) (int)
usb_device.version = 2.0 (2) (double)
udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_usbraw'
info.capabilities = {'usbraw'} (string list)
info.category = 'usbraw' (string)
info.parent = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial' (string)
info.product = 'USB Raw Device Access' (string)
info.subsystem = 'usb_device' (string)
info.udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_usbraw' (string)
linux.device_file = '/dev/usbdev2.3' (string)
linux.hotplug_type = 2 (0x2) (int)
linux.subsystem = 'usb_device' (string)
linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/usb_device/usbdev2.3' (string)
usbraw.device = '/dev/usbdev2.3' (string)
udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_if0'
info.linux.driver = 'usbhid' (string)
info.parent = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial' (string)
info.product = 'USB HID Interface' (string)
info.subsystem = 'usb' (string)
info.udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_if0' (string)
linux.hotplug_type = 2 (0x2) (int)
linux.subsystem = 'usb' (string)
linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0' (string)
usb.bus_number = 2 (0x2) (int)
usb.can_wake_up = true (bool)
usb.configuration_value = 1 (0x1) (int)
usb.device_class = 0 (0x0) (int)
usb.device_protocol = 0 (0x0) (int)
usb.device_revision_bcd = 288 (0x120) (int)
usb.device_subclass = 0 (0x0) (int)
usb.interface.class = 3 (0x3) (int)
usb.interface.number = 0 (0x0) (int)
usb.interface.protocol = 1 (0x1) (int)
usb.interface.subclass = 1 (0x1) (int)
usb.is_self_powered = false (bool)
usb.linux.device_number = 3 (0x3) (int)
usb.linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0' (string)
usb.max_power = 100 (0x64) (int)
usb.num_configurations = 1 (0x1) (int)
usb.num_interfaces = 1 (0x1) (int)
usb.num_ports = 0 (0x0) (int)
usb.product = 'USB HID Interface' (string)
usb.product_id = 51889 (0xcab1) (int)
usb.speed = 1.5 (1.5) (double)
usb.vendor = 'Logitech, Inc.' (string)
usb.vendor_id = 1133 (0x46d) (int)
usb.version = 2.0 (2) (double)
udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_if0_logicaldev_input'
info.addons.singleton = {'hald-addon-input'} (string list)
info.capabilities = {'input', 'input.keyboard', 'input.keypad', 'input.keys', 'button'} (string list)
info.category = 'input' (string)
info.parent = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_if0' (string)
info.product = 'Logitech USB Wireless HID Receiver' (string)
info.subsystem = 'input' (string)
info.udi = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_if0_logicaldev_input' (string)
input.device = '/dev/input/event11' (string)
input.originating_device = '/org/freedesktop/Hal/devices/usb_device_46d_cab1_noserial_if0' (string)
input.product = 'Logitech USB Wireless HID Receiver' (string)
input.x11_driver = 'evdev' (string)
input.xkb.layout = 'it' (string)
input.xkb.model = 'evdev' (string)
input.xkb.rules = 'base' (string)
input.xkb.variant = (string)
linux.device_file = '/dev/input/event11' (string)
linux.hotplug_type = 2 (0x2) (int)
linux.subsystem = 'input' (string)
linux.sysfs_path = '/sys/devices/pci0000:00/0000:00:1d.0/usb2/2-1/2-1:1.0/input/input12/event11' (string)
Keyboard Layout
The keyboard found at the local store provides an Italian layout. It features six extra keys:
- Quit, between Esc and F1
- Zoom_In and Zoom_Out, in place of Windows key and left Alt_L
- Backward and Forward, between Space and AltGr
- Ok just below the right Shift_R.
The keyboard provides also the four arrow keys (Up, Down, Left, and Right) on the lower right-hand-side corner which come very handy when surfing through MythTV menus. In the same place, there is also the blue key FN which, when combined with the arrow keys, serve as Page_Up, Page_Down, Begin, and End.
The blue key FN can be used to enter digits with a keypad layout. Unfortunately, FN and keypad keys are all on the right-hand-side of the keyboard and the digits should be entered with one hand by pressing two keys at the same time.
The biggest shortcoming of the keyboard, though, is that it misses the left Alt_L key. The ALT_L is vital for a more advanced usage of the home theater hosting MythTV, e.g., when text console is required.
Scancodes
The key codes, called scancodes and produced by the keyboard at each key press/release, can be shown with the utility showkey run in a text console. Even when using the kernel parameter atkbd.softram=0, as suggested in showkey's manual page, the scancodes don't change.
lorcap ~ $ showkey -s kb mode was UNICODE [ if you are trying this under X, it might not work since the X server is also reading /dev/console ] press any key (program terminates 10s after last keypress)... 0x9c 0x38 0x0e # Quit = Alt_L Backspace 0xb8 0x8e 0x4a # Zoom_Out = KP_Subtract 0xca 0x4e # Zoom_In = KP_Add 0xce 0xe0 0x1d 0xe0 0x4b # Backward = Control_L Left 0xe0 0x9d 0xe0 0xcb 0xe0 0x1d 0xe0 0x4d # Forward = Control_L Right 0xe0 0x9d 0xe0 0xcd 0x38 0x1c # Ok = Alt_L Return 0xb8 0x9c
Keycodes
Keycodes are numbers assigned by the kernel to each individual physical key and read by applications.
lorcap ~ $ showkey -k kb mode was UNICODE [ if you are trying this under X, it might not work since the X server is also reading /dev/console ] press any key (program terminates 10s after last keypress)... keycode 28 release keycode 56 press # Quit = Alt_L keycode 14 press # Backspace keycode 56 release keycode 14 release keycode 74 press # Zoom_Out = KP_Subtract keycode 74 release keycode 78 press # Zoom_In = KP_Add keycode 78 release keycode 97 press # Backward = Control_L keycode 105 press # Left keycode 97 release keycode 105 release keycode 97 press # Forward = Control_L keycode 106 press # Right keycode 97 release keycode 106 release keycode 56 press # Ok = Alt_L keycode 28 press # Return keycode 56 release keycode 28 release
