Probing TPLink MA180 in Modem Mode

After installing the windows driver, the 3G USB modem appear and install on COM12 on my Win7 machine



Examine the report from USB Viewer shows a total of 12 endpoints.  After examine the data log when using the modem, it is found the USB modem is installed on interface number 3 as highlighted below in BLUE

Device Descriptor:
bcdUSB:             0x0200
bDeviceClass:         0x00
bDeviceSubClass:      0x00
bDeviceProtocol:      0x00
bMaxPacketSize0:      0x40 (64)
idVendor:           0x2357
idProduct:          0x0201
bcdDevice:          0x0000
iManufacturer:        0x03
0x0409: "TP-LINK, Incorporated"
iProduct:             0x02
0x0409: "TP-LINK HSUPA Modem"
iSerialNumber:        0x04
0x0409: "@@@@@@@@@@"
bNumConfigurations:   0x01

ConnectionStatus: DeviceConnected
Current Config Value: 0x01
Device Bus Speed:     High
Device Address:       0x02
Open Pipes:             12

Endpoint Descriptor:
bEndpointAddress:     0x81  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x01  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x82  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x02  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x84  IN
Transfer Type:   Interrupt
wMaxPacketSize:     0x0040 (64)
bInterval:            0x05

Endpoint Descriptor:
bEndpointAddress:     0x85  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x04  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x86  IN
Transfer Type:   Interrupt
wMaxPacketSize:     0x0040 (64)
bInterval:            0x05

Endpoint Descriptor:
bEndpointAddress:     0x87  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x05  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x03  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x00

Endpoint Descriptor:
bEndpointAddress:     0x83  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x00

Configuration Descriptor:
wTotalLength:       0x008A
bNumInterfaces:       0x05
bConfigurationValue:  0x01
iConfiguration:       0x01
0x0409: "TP-LINK Configuration"
bmAttributes:         0xE0 (Bus Powered Self Powered Remote Wakeup)
MaxPower:             0xFA (500 Ma)

Interface Descriptor:
bInterfaceNumber:     0x00
bAlternateSetting:    0x00
bNumEndpoints:        0x02
bInterfaceClass:      0xFF
bInterfaceSubClass:   0xFF
bInterfaceProtocol:   0xFF
iInterface:           0x00

Endpoint Descriptor:
bEndpointAddress:     0x81  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x01  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Interface Descriptor:
bInterfaceNumber:     0x01
bAlternateSetting:    0x00
bNumEndpoints:        0x02
bInterfaceClass:      0xFF
bInterfaceSubClass:   0xFF
bInterfaceProtocol:   0xFF
iInterface:           0x00

Endpoint Descriptor:
bEndpointAddress:     0x82  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x02  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Interface Descriptor:
bInterfaceNumber:     0x02
bAlternateSetting:    0x00
bNumEndpoints:        0x02
bInterfaceClass:      0x08
bInterfaceSubClass:   0x06
bInterfaceProtocol:   0x50
iInterface:           0x00

Endpoint Descriptor:
bEndpointAddress:     0x03  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x00

Endpoint Descriptor:
bEndpointAddress:     0x83  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x00

Interface Descriptor:
bInterfaceNumber:     0x03
bAlternateSetting:    0x00
bNumEndpoints:        0x03
bInterfaceClass:      0xFF
bInterfaceSubClass:   0xFF
bInterfaceProtocol:   0xFF
iInterface:           0x00

Endpoint Descriptor:
bEndpointAddress:     0x84  IN
Transfer Type:   Interrupt
wMaxPacketSize:     0x0040 (64)
bInterval:            0x05

Endpoint Descriptor:
bEndpointAddress:     0x85  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x04  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Interface Descriptor:
bInterfaceNumber:     0x04
bAlternateSetting:    0x00
bNumEndpoints:        0x03
bInterfaceClass:      0xFF
bInterfaceSubClass:   0xFF
bInterfaceProtocol:   0xFF
iInterface:           0x00

Endpoint Descriptor:
bEndpointAddress:     0x86  IN
Transfer Type:   Interrupt
wMaxPacketSize:     0x0040 (64)
bInterval:            0x05

Endpoint Descriptor:
bEndpointAddress:     0x87  IN
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

Endpoint Descriptor:
bEndpointAddress:     0x05  OUT
Transfer Type:        Bulk
wMaxPacketSize:     0x0200 (512)
bInterval:            0x20

With these information, it is ready to get it to work on PIC24FJ256GB106.