阿莫电子网找了一个STM32F4单片机实现USB-Hid设备的程序，编译及烧录都正常，设备也能够被正确枚举及打开，但是USB调试助手始终无法收到数据。用"Bus Hound"工具看数据包，可见如下错误信息（红 {MOD}字体）： Device  Phase  Data                                                                                                    Description                       Cmd.Phase.Ofs(rep)
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  16.0  CTL    80 06 00 01  00 00 12 00                                                                                GET DESCRIPTOR                           1.1.0       
  16.0  IN     12 01 00 02  00 00 00 40  83 04 50 57  00 02 01 02  03 01                                               .......@..PW......                       1.2.0       
  16.0  CTL    80 06 00 02  00 00 09 00                                                                                GET DESCRIPTOR                           2.1.0       
  16.0  IN     09 02 29 00  01 01 00 e0  32                                                                            ..).....2                                2.2.0       
  16.0  CTL    80 06 00 02  00 00 29 00                                                                                GET DESCRIPTOR                           3.1.0       
  16.0  IN     09 02 29 00  01 01 00 e0  32 09 04 00  00 02 03 00  00 00 09 21  10 01 00 01  22 a2 00 07  05 81 03 ff  ..).....2..........!....".......         3.2.0       
  16.0  CTL    00 09 01 00  00 00 00 00                                                                                SET CONFIG                               4.1.0       
  16.0  CTL    21 0a 00 00  00 00 00 00                                                                                SET IDLE                                 5.1.0       
  16.0  CTL    81 06 00 22  00 00 e2 00                                                                                GET DESCRIPTOR                           6.1.0       
  16.0  IN     05 8c 09 01  a1 01 85 01  09 01 15 00  25 01 75 08  95 01 b1 82  85 01 09 01  91 82 85 02  09 02 15 00  ............%.u.................         6.2.0       
  16.0  CTL    80 06 01 03  09 04 8a 01                                                                                GET DESCRIPTOR                           7.1.0(2)    
  16.0  IN     0c 03 42 00  61 00 69 00  64 00 75 00                                                                   ..B.a.i.d.u.                             7.2.0       
  16.0  CTL    80 06 02 03  09 04 8a 01                                                                                GET DESCRIPTOR                           8.1.0(2)    
  16.0  IN     18 03 42 00  61 00 69 00  64 00 75 00  20 00 47 00  6c 00 61 00  73 00 73 00                            ..B.a.i.d.u. .G.l.a.s.s.                 8.2.0       
  16.0  CTL    80 06 03 03  09 04 8a 01                                                                                GET DESCRIPTOR                           9.1.0(2)    
  16.0  IN     1a 03 30 00  30 00 30 00  30 00 30 00  30 00 30 00  30 00 30 00  31 00 31 00  43 00                     ..0.0.0.0.0.0.0.0.0.1.1.C.               9.2.0       
  16.1  USTS   c0000012                                                                                                babble detected                         13.1.0       
  16.1  USTS   c0000030                                                                                                endpoint halted                         14.1.0       
  16    RESET                                                                                                                                                  15.1.0       
  16    ok                                                                                                                                                     15.2.0       
  16.1  RESET                                                                                                                                                  16.1.0       
  16.0  CTL    80 06 00 02  00 00 09 00                                                                                GET DESCRIPTOR                          17.1.0       
  16.0  IN     09 02 29 00  01 01 00 e0  32                                                                            ..).....2                               17.2.0       
  16.0  CTL    80 06 00 02  00 00 29 00                                                                                GET DESCRIPTOR                          18.1.0       
  16.0  IN     09 02 29 00  01 01 00 e0  32 09 04 00  00 02 03 00  00 00 09 21  10 01 00 01  22 a2 00 07  05 81 03 ff  ..).....2..........!....".......        18.2.0       
  16.1  USTS   c0000012                                                                                                babble detected                         19.1.0(166)  
  16    RESET                                                                                                                                                  20.1.0(166)  
  16.1  USTS   80000600                                                                                                bad pipe handle                         21.1.0(166)  
  16    ok                                                                                                                                                     20.2.0       
  16.1  RESET                                                                                                                                                  22.1.0(166)  
不知是否有人遇到类似错误？请问是如何解决的？