USB 设备与主机通信的数据格式

USB 设备与主机通信的数据定义的数据格式如下表格所示。

	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
第1字节	右 GUI	右 Alt	右 Shift	右 Ctrl	左 GUI	左 Alt	左 Shift	左 Ctrl
第2字节	保留 0x00
第3字节	0x00
第4字节	0x00
第5字节	0x00
第6字节	0x00
第7字节	0x00
第8字节	0x00

若要在电脑上使用复制功能（left Ctrl + C），那么键盘按下 left Ctrl 和 C 键（C 键对应 Key Code 为 0x06），设备向主机发送的数据格式 01，00，06，00，00，00，00，00，这样设备便向主机发送了 left CTRL 键和 C 键按下的信号，主机执行复制功能，下表格对应按下的按键键码数据。

	Bit 7	Bit 6	Bit 5	Bit 4	Bit 3	Bit 2	Bit 1	Bit 0
第1字节	右 GUI	右 Alt	右 Shift	右 Ctrl	左 GUI	左 Alt	左 Shift	左 Ctrl
第2字节	保留 0x00
第3字节	0x06
第4字节	0x00
第5字节	0x00
第6字节	0x00
第7字节	0x00
第8字节	0x00

键盘按键名称及HID扫描码及VK虚拟键码对照表

按键名称	按键名称	HID码（扫描码）十进制 [十六进制]	虚拟键码VK 十进制 [十六进制]
	ESC	41 [0X29]	27 [0x1B]
	F1	58 [0X3a]	112 [0x70]
	F2	59 [0X3b]	113 [0x71]
	F3	60 [0X3c]	114 [0x72]
	F4	61 [0X3d]	115 [0x73]
	F5	62 [0X3e]	116 [0x74]
	F6	63 [0X3f]	117 [0x75]
	F7	64 [0X40]	118 [0x76]
	F8	65 [0X41]	119 [0x77]
	F9	66 [0X42]	120 [0x78]
	F10	67 [0X43]	121 [0x79]
	F11	68 [0X44]	122 [0x7A]
	F12	69 [0X45]	123 [0x7B]
	Esc	41 [0X29]	27 [0x1B]
回退	Back	42 [0X2a]	8 [0x08]
	Tab	43 [0X2b]	9 [0x09]
大小写	CapLck	57 [0X39]	20 [0x14]
回车	Enter	40 [0X28]	13 [0x0D]
空格	Space	44 [0X2c]	32 [0x20]
	Scroll	71 [0X47]	145 [0x91]
暂停	Pause	72 [0X48]	19 [0x13]
插入	Insert	73 [0X49]	45 [0x2D]
截屏	PrintScr	70 [0X46]	44 [0x2C]
删除	Delete	76 [0X4c]	46 [0x2E]
首页	Home	74 [0X4a]	36 [0x24]
结尾	End	77 [0X4d]	35 [0x23]
上一页	PageUp	75 [0X4b]	33 [0x21]
下一页	PageDn	78 [0X4e]	34 [0x22]
左	Left	80 [0X50]	37 [0x25]
上	Up	82 [0X52]	38 [0x26]
右	Right	79 [0X4f]	39 [0x27]
下	Down	81 [0X51]	40 [0x28]
小键盘0	Num0	98 [0X62]	96 [0x60]
	Num1	89 [0X59]	97 [0x61]
	Num2	90 [0X5a]	98 [0x62]
	Num3	91 [0X5b]	99 [0x63]
	Num4	92 [0X5c]	100 [0x64]
	Num5	93 [0X5d]	101 [0x65]
	Num6	94 [0X5e]	102 [0x66]
	Num7	95 [0X5f]	103 [0x67]
	Num8	96 [0X60]	104 [0x68]
	Num9	97 [0X61]	105 [0x69]
加号	NumAdd	87 [0X57]	107 [0x6B]
减号	NumSub	86 [0X56]	109 [0x6D]
乘号	NumMult	85 [0X55]	106 [0x6A]
除号	NumDiv	84 [0X54]	111 [0x6F]
点	NumDecim	99 [0X63]	110 [0x6E]
数字锁定键	NumLock	83 [0X53]	144 [0x90]
	Ctrl	1 [0X01]	17 [0x11]
左CTR	LCtrl	1 [0X01]	162 [0xA2]
	RCtrl	16 [0X10]	163 [0xA3]
	Shift	2 [0X02]	16 [0x10]
	LShift	2 [0X02]	160 [0xA0]
	RShift	32 [0X20]	161 [0xA1]
	Alt	4 [0X04]	18 [0x12]
	LAlt	4 [0X04]	164 [0xA4]
	RAlt	64 [0X40]	165 [0xA5]
	WIN	8 [0X08]	91 [0x5B]
	LWIN	8 [0X08]	91 [0x5B]
	RWIN	128 [0X80]	92 [0x5C]
	A	4 [0X04]	65 [0x41]
	B	5 [0X05]	66 [0x42]
	C	6 [0X06]	67 [0x43]
	D	7 [0X07]	68 [0x44]
	E	8 [0X08]	69 [0x45]
	F	9 [0X09]	70 [0x46]
	G	10 [0X0a]	71 [0x47]
	H	11 [0X0b]	72 [0x48]
	I	12 [0X0c]	73 [0x49]
	J	13 [0X0d]	74 [0x4A]
	K	14 [0X0e]	75 [0x4B]
	L	15 [0X0f]	76 [0x4C]
	M	16 [0X10]	77 [0x4D]
	N	17 [0X11]	78 [0x4E]
	O	18 [0X12]	79 [0x4F]
	P	19 [0X13]	80 [0x50]
	Q	20 [0X14]	81 [0x51]
	R	21 [0X15]	82 [0x52]
	S	22 [0X16]	83 [0x53]
	T	23 [0X17]	84 [0x54]
	U	24 [0X18]	85 [0x55]
	V	25 [0X19]	86 [0x56]
	W	26 [0X1a]	87 [0x57]
	X	27 [0X1b]	88 [0x58]
	Y	28 [0X1c]	89 [0x59]
	Z	29 [0X1d]	90 [0x5A]
	0	39 [0X27]	48 [0x30]
	1	30 [0X1e]	49 [0x31]
	2	31 [0X1f]	50 [0x32]
	3	32 [0X20]	51 [0x33]
	4	33 [0X21]	52 [0x34]
	5	34 [0X22]	53 [0x35]
	6	35 [0X23]	54 [0x36]
	7	36 [0X24]	55 [0x37]
	8	37 [0X25]	56 [0x38]
	9	38 [0X26]	57 [0x39]