USB vendor specific class with Bulk transfer in LPC1769 Microcontroller - c

Question

I am trying to achieve USB vendor specific class with Bulk transfer in LPC1769 Microcontroller.
I got an USB Biometric module, extracted it's device information. Accordingly I have configured the following descriptor.
const uint8_t USB_DeviceDescriptor[]={};
const uint8_t USB_ConfigDescriptor[]={};
const uint8_t USB_StringDescriptor[]={};
Now my USB Biometric device and my LPC1769 device has similar type of device information
(I have seen it from my Ubuntu PC using this command "lsusb -v")
But, when I am plugging it to windows it should come to USB class (Trident symbol list) in device manager. USB Bio-metric device is listing under "Universal Serial Bus controller".
I am not able to find any Any document, flowchart
Could anyone please guide me how to established communication in vendor specific class.
USB biometric device information
Bus 003 Device 023: ID 16d1:0407
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x16d1
idProduct 0x0407
bcdDevice 0.00
iManufacturer 1
iProduct 2
iSerial 0
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 300mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 0
My LPC1769 USB device Information
Bus 003 Device 018: ID 1fc9:2002 NXP Semiconductors
Couldn't open device, some information will be missing
Device Descriptor:
bLength 18
bDescriptorType 1
bcdUSB 2.00
bDeviceClass 0 (Defined at Interface level)
bDeviceSubClass 0
bDeviceProtocol 0
bMaxPacketSize0 64
idVendor 0x1fc9 NXP Semiconductors
idProduct 0x2002
bcdDevice 1.00
iManufacturer 1
iProduct 2
iSerial 1
bNumConfigurations 1
Configuration Descriptor:
bLength 9
bDescriptorType 2
wTotalLength 32
bNumInterfaces 1
bConfigurationValue 1
iConfiguration 0
bmAttributes 0x80
(Bus Powered)
MaxPower 500mA
Interface Descriptor:
bLength 9
bDescriptorType 4
bInterfaceNumber 0
bAlternateSetting 0
bNumEndpoints 2
bInterfaceClass 255 Vendor Specific Class
bInterfaceSubClass 0
bInterfaceProtocol 0
iInterface 3
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Endpoint Descriptor:
bLength 7
bDescriptorType 5
bEndpointAddress 0x82 EP 2 IN
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
bInterval 1
Thanking you in advance.

Answer 1

bEndpointAddress 0x01 EP 1 OUT
bmAttributes 2
Transfer Type Bulk
Synch Type None
Usage Type Data
wMaxPacketSize 0x0200 1x 512 bytes
The LPC1769 only supports USB full speed, thus Bulk EPs have a wMaxPacketSize of 64 Bytes max. Only high speed devices support 512 byte Bulk EPs.
To operate "vendor specific" class USB devices, you use either a specific kernel driver or LibUSB/WinUSB as driver together with a user mode application.

Answer 2

Whenever there is no driver installed for particular USB device (VID and PID), it will shows "?Other devices"
in the device manager. But, for my case it was listing under "Communication Devices Class" although I have
change my USB class protocol to "Vendor Specific Class". Why? The driver instance is trying to map with the
same VID and PID. I have changed my identical to that of USB Bio-metric device. It shows in the "Universal
Serial Bus Controller listing".
Now, you can integrate the same with your Android Tab with "Android Studio Platform" there is an API called "UsbManager"
http://developer.android.com/reference/android/hardware/usb/UsbManager.html
Thanks for your participation.