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请教FAE，使用CUbeMX建立USB_HOST工程，已经能够识别鼠标和键盘，也能收到数据。但是接上电磁屏（HID设备，类似鼠标），不能接收数据是什么原因？ 设备已经连接成功了如下： USB Device Connected3 d3 h" P5 Z% \/ ~3 t USB Device Reset Completed PID: 6dh VID: 256ch Address (#1) assigned. Manufacturer : GAOMON Product : Gaomon Tablet5 c0 A; O( t" p2 r- K+ W4 n$ _ Serial Number : Enumeration done. This device has only 1 configuration.7 J" H; b3 l+ z! u. K Default configuration set.% i0 q0 x1 R9 M1 W, l4 H2 s3 Z Device remote wakeup enabled Switching to Interface (#0)/ D5 V# r2 T; B Class : 3h* W* x. Z* a8 l SubClass : 1h6 a4 @: z* a4 v- ^0 Z2 I! e: T Protocol : 2h Mouse device found!5 U; Q/ m! B" G- J1 p$ k HID class started. |
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bLength: 12h
bDescriptorType: 1h: S- ], d: h3 [# u- L2 D" [2 [2 Z
bcdUSB: 200h
bDeviceClass: 0h
bDeviceSubClass: 0h
bDeviceProtocol: 0h
bMaxPacketSize: 8h; M5 g+ k/ G/ ^
bDeviceClass: 0h( k9 z) w: t, |3 K- N- R
PID: 6dh! @4 l; z7 P: N: j5 l; z0 Z
VID: 256ch8 b$ n$ o7 B3 Q! g& D
bcdDevice: 100h* A0 K5 i, F* h. @+ F
iManufacturer: 1h/ w0 J+ W# ~- o6 o. h
iProduct: 2h; s* _/ h# |# G! x* V$ P; a( o! w
iSerialNumber: 3h
bNumConfigurations: 1h! x. x' C+ k+ p5 Q
Address (#1) assigned.: K T# n4 a4 D1 F4 U
bLength: 9h- O& ?7 w0 S4 \3 @
bDescriptorType: 2h
wTotalLength: 3bh& K& l: e/ {, e7 o" X
bDescriptorType: 2h
bNumInterfaces: 2h* t# m+ `/ q: g
bConfigurationValue: 1h
iConfiguration: 0h
bmAttributes: a0h
bMaxPower: f0h6 A( r& y+ d6 G# x) L" i
Itf_Desc[0].bLength: 9h
Itf_Desc[0].bDescriptorType: 4h) _5 C' z5 r4 i+ c% ~& S; L: E
Itf_Desc[0].bInterfaceNumber: 0h/ Q0 e! N6 S& B( ^
Itf_Desc[0].bAlternateSetting: 0h
Itf_Desc[0].bNumEndpoints: 1h! D9 ]6 I( g1 c( F
Itf_Desc[0].bInterfaceClass: 3h3 @3 u+ W) n9 n+ t
Itf_Desc[0].bInterfaceSubClass: 1h5 i) W9 G5 }% X7 e
Itf_Desc[0].bInterfaceProtocol: 2h3 ^, Y+ n: D$ Z4 C* N& p( Z+ \8 T1 g, c
Itf_Desc[0].iInterface: 0h
Itf_Desc[0].Ep_Desc.bLength: 7h
Itf_Desc[0].Ep_Desc.bDescriptorType: 5h
Itf_Desc[0].Ep_Desc.bEndpointAddress: 81h8 c1 N) k( R0 l4 o! k( J
Itf_Desc[0].Ep_Desc.bmAttributes: 3h6 ~ c; H3 n! C9 Z5 B3 N7 k
Itf_Desc[0].Ep_Desc.wMaxPacketSize: 40h$ ^% E2 t, R$ A' E
Itf_Desc[0].Ep_Desc.bInterval: 2h" U( E* C: I( K" j8 E+ K
7 |; Q2 U [% q$ L, f5 [4 I; {
Itf_Desc[1].bLength: 9h
Itf_Desc[1].bDescriptorType: 4h
Itf_Desc[1].bInterfaceNumber: 1h2 _* i' @, E% @9 P
Itf_Desc[1].bAlternateSetting: 0h
Itf_Desc[1].bNumEndpoints: 1h2 k) S7 [/ J, r! c, `& V6 T
Itf_Desc[1].bInterfaceClass: 3h/ b+ p5 H) v1 V
Itf_Desc[1].bInterfaceSubClass: 1h
Itf_Desc[1].bInterfaceProtocol: 2h% o! |9 l( q7 B6 I7 Z+ Q1 X
Itf_Desc[1].iInterface: 0h
Itf_Desc[1].Ep_Desc.bLength: 7h, [* ^/ Q( r$ j
Itf_Desc[1].Ep_Desc.bDescriptorType: 5h" @7 E' N" K, N
Itf_Desc[1].Ep_Desc.bEndpointAddress: 82h2 C3 {" \9 p) i2 ?5 Q
Itf_Desc[1].Ep_Desc.bmAttributes: 3h/ x0 h- n, ~- Q4 b* I; ^( n
Itf_Desc[1].Ep_Desc.wMaxPacketSize: 10h
Itf_Desc[1].Ep_Desc.bInterval: 2h/ g4 g) g( B9 g: y5 D
Manufacturer : GAOMON
Product : Gaomon Tablet
Serial Number :
Enumeration done.
This device has only 1 configuration.
Default configuration set.
Device remote wakeup enabled
interface;0
Switching to Interface (#0)/ K* b1 ^ x" t+ d1 k" \0 o' `
Class : 3h
SubClass : 1h9 W3 A; S; Y& t, o
Protocol : 2h6 q% Y5 t. r: W' P
Mouse device found!
HID class started.
HID_Handle->HID_Desc.bLength:9h
HID_Handle->HID_Desc.bDescriptorType:21h
HID_Handle->HID_Desc.bcdHID:111h
HID_Handle->HID_Desc.bCountryCode:0h
HID_Handle->HID_Desc.bNumDescriptors:1h: g' R3 Z" P" v
HID_Handle->HID_Desc.bReportDescriptorType:22h9 N5 Y( B( G, F# l3 A
HID_Handle->HID_Desc.wItemLength:12h( {/ D; S' E6 k+ I& g$ b% o
报告描述符如下：
0x06 0x00 0xff
0x09 0x01
0xa1 0x01
0x85 0x08
0x75 0x58
0x95 0x01
0x09 0x01
0x81 0x02 " u, z& ~7 `, @
0xc0 0xff
2 K) {! E& j- h6 m) u/ v
- X8 |; ^* C* K0 ^2 b& `
2、函数 status = USBH_HID_GetReport(phost, 0x01U, 0U, HID_Handle->pData, (uint8_t)HID_Handle->length); 返回的一直是USBH_BUSY; t: m1 o3 k6 l
3、设备有两个接口描述符，STM32的USB_LIb不支持两个接口的设备？