Hi, I have a Hama MCE remote control, whose USB dongle registers itself as two HID devices on my machine running stock Ubuntu Jaunty 64-bit desktop:
[210440.980030] usb 2-6: new low speed USB device using ohci_hcd and address 5 [210441.192962] usb 2-6: configuration #1 chosen from 1 choice [210441.216468] input: HID 05a4:9881 as /devices/pci0000:00/0000:00:04.0/usb2/2-6/2-6:1.0/input/input9 [210441.245334] generic-usb 0003:05A4:9881.0006: input,hidraw3: USB HID v1.10 Keyboard [HID 05a4:9881] on usb-0000:00:04.0-6/input0 [210441.274963] input: HID 05a4:9881 as /devices/pci0000:00/0000:00:04.0/usb2/2-6/2-6:1.1/input/input10 [210441.324278] generic-usb 0003:05A4:9881.0007: input,hidraw4: USB HID v1.10 Mouse [HID 05a4:9881] on usb-0000:00:04.0-6/input1 Whenever I press a key on the remote, a few bytes become available for reading on /dev/input/event7 or /dev/input/event8 (depending on the key pressed; some of the keys emulate a mouse key, others emulate a keyboard key). So the hardware seems to work, keypresses can be propagated to userspace (e.g. with `cat /dev/input/event7'). My questions are the following: 1. How do I prevent the remote from sending keyboard events (such as Enter, BackSpace, PageUp and numpad number keys) to the text-mode virtual terminal and to X11? I don't want my remote to be recognized as a regular keyboard or mouse -- but I have several USB keyboards and mice connected to the computer, they should still be recognized as such. Should I blacklist the USB device ID somewhere, possibly in udev's configs? Exactly where and how? 2. Which is the easiest way to write a program which can dump the data bytes received whenever a key is pressed on the remote, preferably in human-readable form? How do I extract the keycode from the data? It seems to me that using libhid is appropriate here. Do you have some example code? If no, which functions should I call in which order? 3. How do I make my dumper program automatically be started whenever the device gets connected, and how do I make it exit when the device gets disconnected? Alternatively, if it's easier, it is OK that my dumper program keeps running all the time, surviving connects and disconnects. I'm an experienced programmer in C, C++, Python, Ruby, Perl and a bunch of other languages, so writing (or modifying) the dumper program won't be a problem for me. I just need a kick start on USB HID device configuration on Linux (kernel, modutils, udev etc.) and programming device access with libhid (or without it, if it's easier), because I haven't programmed USB device or set them up at low level yet. Thanks a lot in advance, Péter _______________________________________________ libhid-discuss mailing list [email protected] http://lists.alioth.debian.org/mailman/listinfo/libhid-discuss http://libhid.alioth.debian.org/
