寻求GPRS modem描述符的获取

Connection Status Device connected
Current Configuration 1
Speed Full
Device Address 1
Number Of Open Pipes 2

Device Descriptor P100EU USB Mass Storage
Offset Field Size Value Description
0 bLength 1 12h  
1 bDescriptorType 1 01h Device
2 bcdUSB 2 0200h USB Spec 2.0
4 bDeviceClass 1 02h CDC Control
5 bDeviceSubClass 1 00h  
6 bDeviceProtocol 1 00h  
7 bMaxPacketSize0 1 08h 8 bytes
8 idVendor 2 0471h Philips
10 idProduct 2 BEAFh  
12 bcdDevice 2 0100h 1.00
14 iManufacturer 1 01h "POPULAR"
15 iProduct 1 02h "P100EU USB Mass Storage"
16 iSerialNumber 1 03h "352369-02-015213....0"
17 bNumConfigurations 1 01h  

Configuration Descriptor 1 Self Powered
Offset Field Size Value Description
0 bLength 1 09h  
1 bDescriptorType 1 02h Configuration
2 wTotalLength 2 0020h  
4 bNumInterfaces 1 01h  
5 bConfigurationValue 1 01h  
6 iConfiguration 1 00h  
7 bmAttributes 1 C0h Self Powered
 4..0: Reserved  ...00000  
 5: Remote Wakeup  ..0.....  No
 6: Self Powered  .1......  Yes
 7: Reserved (set to one)
(bus-powered for 1.0)  1.......  
8 bMaxPower 1 01h 2 mA

Interface Descriptor 0/0 Mass Storage, 2 Endpoints
Offset Field Size Value Description
0 bLength 1 09h  
1 bDescriptorType 1 04h Interface
2 bInterfaceNumber 1 00h  
3 bAlternateSetting 1 00h  
4 bNumEndpoints 1 02h  
5 bInterfaceClass 1 08h Mass Storage
6 bInterfaceSubClass 1 06h SCSI transparent command set
7 bInterfaceProtocol 1 50h Bulk-Only Transport
8 iInterface 1 04h "Mass Storage Device"

Endpoint Descriptor 03 3 Out, Bulk, 64 bytes
Offset Field Size Value Description
0 bLength 1 07h  
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 03h 3 Out
3 bmAttributes 1 02h Bulk
 1..0: Transfer Type  ......10  Bulk
 7..2: Reserved  000000..  
4 wMaxPacketSize 2 0040h 64 bytes
6 bInterval 1 00h  

Endpoint Descriptor 83 3 In, Bulk, 64 bytes
Offset Field Size Value Description
0 bLength 1 07h  
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 83h 3 In
3 bmAttributes 1 02h Bulk
 1..0: Transfer Type  ......10  Bulk
 7..2: Reserved  000000..  
4 wMaxPacketSize 2 0040h 64 bytes
6 bInterval 1 00h
/************************************************************************/

Connection Status Device connected
Current Configuration 1
Speed Full
Device Address 1
Number Of Open Pipes 3

Device Descriptor P100EU EDGE USB modem
Offset Field Size Value Description
0 bLength 1 12h  
1 bDescriptorType 1 01h Device
2 bcdUSB 2 0200h USB Spec 2.0
4 bDeviceClass 1 02h CDC Control
5 bDeviceSubClass 1 00h  
6 bDeviceProtocol 1 00h  
7 bMaxPacketSize0 1 08h 8 bytes
8 idVendor 2 0471h Philips
10 idProduct 2 1234h  
12 bcdDevice 2 0100h 1.00
14 iManufacturer 1 01h "POPULAR"
15 iProduct 1 02h "P100EU EDGE USB modem"
16 iSerialNumber 1 03h "352369-02-015213....0"
17 bNumConfigurations 1 01h  

Configuration Descriptor 1 Self Powered
Offset Field Size Value Description
0 bLength 1 09h  
1 bDescriptorType 1 02h Configuration
2 wTotalLength 2 0043h  
4 bNumInterfaces 1 02h  
5 bConfigurationValue 1 01h  
6 iConfiguration 1 00h  
7 bmAttributes 1 C0h Self Powered
 4..0: Reserved  ...00000  
 5: Remote Wakeup  ..0.....  No
 6: Self Powered  .1......  Yes
 7: Reserved (set to one)
(bus-powered for 1.0)  1.......  
8 bMaxPower 1 01h 2 mA

Interface Descriptor 0/0 CDC Control, 1 Endpoint
Offset Field Size Value Description
0 bLength 1 09h  
1 bDescriptorType 1 04h Interface
2 bInterfaceNumber 1 00h  
3 bAlternateSetting 1 00h  
4 bNumEndpoints 1 01h  
5 bInterfaceClass 1 02h CDC Control
6 bInterfaceSubClass 1 02h Abstract Control Model
7 bInterfaceProtocol 1 01h Common AT commands
8 iInterface 1 04h "WMC Modem"

Header Functional Descriptor
Offset Field Size Value Description
0 bLength 1 05h  
1 bDescriptorType 1 24h Header Functional
2   00 10 01  

Union Functional Descriptor
Offset Field Size Value Description
0 bLength 1 05h  
1 bDescriptorType 1 24h Union Functional
2   06 00 01  

Call Management Functional Descriptor
Offset Field Size Value Description
0 bLength 1 05h  
1 bDescriptorType 1 24h Call Management Functional
2   01 03 01  

Abstract Control Management Functional Descriptor
Offset Field Size Value Description
0 bLength 1 04h  
1 bDescriptorType 1 24h Abstract Control Management Functional
2   02 07  

Endpoint Descriptor 81 1 In, Interrupt, 16 ms
Offset Field Size Value Description
0 bLength 1 07h  
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 81h 1 In
3 bmAttributes 1 03h Interrupt
 1..0: Transfer Type  ......11  Interrupt
 7..2: Reserved  000000..  
4 wMaxPacketSize 2 0010h 16 bytes
6 bInterval 1 10h 16 ms

Interface Descriptor 1/0 CDC Data, 2 Endpoints
Offset Field Size Value Description
0 bLength 1 09h  
1 bDescriptorType 1 04h Interface
2 bInterfaceNumber 1 01h  
3 bAlternateSetting 1 00h  
4 bNumEndpoints 1 02h  
5 bInterfaceClass 1 0Ah CDC Data
6 bInterfaceSubClass 1 00h  
7 bInterfaceProtocol 1 00h  
8 iInterface 1 05h "WMC Modem bulk data"

Endpoint Descriptor 03 3 Out, Bulk, 64 bytes
Offset Field Size Value Description
0 bLength 1 07h  
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 03h 3 Out
3 bmAttributes 1 02h Bulk
 1..0: Transfer Type  ......10  Bulk
 7..2: Reserved  000000..  
4 wMaxPacketSize 2 0040h 64 bytes
6 bInterval 1 00h  

Endpoint Descriptor 83 3 In, Bulk, 64 bytes
Offset Field Size Value Description
0 bLength 1 07h  
1 bDescriptorType 1 05h Endpoint
2 bEndpointAddress 1 83h 3 In
3 bmAttributes 1 02h Bulk
 1..0: Transfer Type  ......10  Bulk
 7..2: Reserved  000000..  
4 wMaxPacketSize 2 0040h 64 bytes
6 bInterval 1 00h  
/*******************************************************************/
这是用USBlyzer得到的同一个设备的描述符，我想应该是个组合设备，因为设备描述符idProduct部分不同，但是怎么获得第二次modem部分的描述符还要请各位给个提示，打开modem里面发现有AU6332芯片，只找到芯片各脚信息的资料，现在能通过单片机读取SD卡模式下的描述符，如论如何也获得不了modem部分的描述符。
还请各位给个提示或者大概方法，谢谢

各位高手给个提示吧！