我有一个旧的 Compaq 键盘,上面有一组不起作用的键。
我已经尝试过xev
, evtest
,evemu-record
并且libinput debug-events
除了这些键之外的所有其他键都可以识别。
但是,当我打开 Wireshark USB 记录器时,我会得到一些如下所示的输出:
0000 00 a8 6e e5 73 9c ff ff 42 01 82 0a 01 00 2d 00 ..o.s...C.....-.
0010 9e ab f1 5f 00 00 00 00 06 c6 03 00 00 00 00 00 ..._............
0020 06 00 00 00 06 00 00 00 00 00 00 00 00 00 00 00 ................
0030 02 00 00 00 00 00 00 00 04 02 00 00 00 00 00 00 ................
0040 04 00 00 00 00 00 ......
0000 00 a8 6e e5 73 9c ff ff 42 01 82 0a 01 00 2d 00 ..o.s...C.....-.
0010 a0 ab f1 5f 00 00 00 00 66 64 01 00 00 00 00 00 ..._....fd......
0020 06 00 00 00 06 00 00 00 00 00 00 00 00 00 00 00 ................
0030 02 00 00 00 00 00 00 00 04 02 00 00 00 00 00 00 ................
0040 04 00 00 10 00 00
这意味着密钥确实有效,我只需要为它编写一个驱动程序。
现在我在编写 linux 驱动程序方面的经验为零,但我查看linux/drivers/hid/
了github.com/torvalds/linux,具体来说hid-asus.c
,我知道我必须以某种方式用相应的十六进制值识别每个击键。
问题是我可以弄清楚在哪里看,因为只有十六进制转储的0000
,0020
和0030
行保持不变,并且0010
每次我通过wireshark记录它时都不同。
我知道这可能是基本的,但你能指出我正确的方向吗,即提供一些我可以阅读的关于这个主题的内容,或者知道我应该如何继续?
输出evtest
:
/dev/input/event12: Compaq Compaq Internet Keyboard
/dev/input/event13: Compaq Compaq Internet Keyboard Consumer Control
/dev/input/event14: Compaq Compaq Internet Keyboard System Control
/dev/input/event15: Compaq Compaq Internet Keyboard
这是来自的输出lsusb
:
Bus 001 Device 010: ID 049f:000e Compaq Computer Corp. Internet Keyboard
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 1.10
bDeviceClass 0
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 8
idVendor 0x049f Compaq Computer Corp.
idProduct 0x000e Internet Keyboard
bcdDevice 1.00
iManufacturer 1 Compaq
iProduct 2 Compaq Internet Keyboard
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 0x003b
bNumInterfaces 2
bConfigurationValue 1
iConfiguration 2 Compaq Internet Keyboard
bmAttributes 0xa0
(Bus Powered)
Remote Wakeup
MaxPower 50mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 1 Keyboard
iInterface 3 Compaq Internet Keyboard
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 65
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x81 EP 1 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0008 1x 8 bytes
bInterval 24
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 1
bAlternateSetting 0
bNumEndpoints 1
bInterfaceClass 3 Human Interface Device
bInterfaceSubClass 1 Boot Interface Subclass
bInterfaceProtocol 0
iInterface 4 Compaq Internet Keyboard
HID Device Descriptor:
bLength 9
bDescriptorType 33
bcdHID 1.00
bCountryCode 0 Not supported
bNumDescriptors 1
bDescriptorType 34 Report
wDescriptorLength 499
Report Descriptors:
** UNAVAILABLE **
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 3
Transfer Type Interrupt
Synch Type None
Usage Type Data
wMaxPacketSize 0x0006 1x 6 bytes
bInterval 3
Device Status: 0x0000
(Bus Powered)