请教下各位，先谢谢了。。如图的设备，
我把STM32-2枚举成鼠标，键盘和触摸屏,这3个功能都已经实现了，但是测试的时候发现
如果按笔记本电脑的大写键，或NUM LOCK等按键时，，host发SET_REPORT后用bus hound监测发现
stall pid了，而不是正确的值，请问是什么原因，谢谢。
这是错误的状态： Device - Device ID (followed by the endpoint for USB devices)
(16) USB Composite Device
(19) USB 人体学输入设备
(20) USB 人体学输入设备
(21) USB 人体学输入设备
(22) HID-compliant mouse
(23) HID Keyboard Device
(24) HID-compliant mouse
Phase - Phase Type
CTL USB control transfer
USTS USB status
Data - Hex dump of the data transferred
Descr - Description of the phase
Cmd... - Position in the captured data
Device Phase Data Description Cmd.Phase.Ofs(rep)
------ ----- ------------------------ ---------------- ------------------
20.0 CTL 21 09 01 02 01 00 02 00 SET REPORT 1.1.0(24)
20.0 USTS c0000004 stall pid 1.2.0
/********下面是正确的，即笔记本电外接一个USB键盘，通过BUS hound键盘这个USB,然后按笔记本自己的大小写键的数据********/
Device - Device ID (followed by the endpoint for USB devices)
(25) USB Composite Device
(26) USB 人体学输入设备
(27) USB 人体学输入设备
(28) HID Keyboard Device
(29) HID-compliant device
(30) 符合 HID 标准的用户控制设备
Phase - Phase Type
CTL USB control transfer
OUT Data out transfer
Data - Hex dump of the data transferred
Descr - Description of the phase
Cmd... - Position in the captured data
Device Phase Data Description Cmd.Phase.Ofs(rep)
------ ----- ------------------------ ---------------- ------------------
26.0 CTL 21 09 00 02 00 00 01 00 SET REPORT 1.1.0
26.0 OUT 01 . 1.2.0
26.0 CTL 21 09 00 02 00 00 01 00 SET REPORT 2.1.0
26.0 OUT 00 . 2.2.0
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