Re: usb1.1 vs libusb-1.0.9

[Xiaofan C. <xia...@gm...>]

On Wed, Nov 14, 2012 at 6:05 PM, geo <sha...@ya...> wrote:
> Below is the usb descriptor for this device : lsusb -vvv
>
> EP 3,4,10 are used for a CDC console
>
> EP 1,2 are used for data, EP 2 is the one used to get the data out of uC
>
>
> Bus 002 Device 008: ID 1234:5678
>
> Device Descriptor:
>   bLength                18
>   bDescriptorType         1
>   bcdUSB               1.10
>   bDeviceClass            2
>   bDeviceSubClass         0
>   bDeviceProtocol         0
>   bMaxPacketSize0         8
>   idVendor           0x1234
>   idProduct          0x5678
>   bcdDevice            0.01
>   iManufacturer           1 A
>   iProduct                2 B
>   iSerial                 0
>   bNumConfigurations      1
>
>   Configuration Descriptor:
>     bLength                 9
>     bDescriptorType         2
>     wTotalLength           90
>     bNumInterfaces          3
>     bConfigurationValue     1
>     iConfiguration          0
>     bmAttributes         0xc0
>       Self Powered
>     MaxPower               10mA
>
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        0
>       bAlternateSetting       0
>       bNumEndpoints           1
>       bInterfaceClass         2 Communications
>       bInterfaceSubClass      2 Abstract (modem)
>       bInterfaceProtocol      1 AT-commands (v.25ter)
>       iInterface              5 Console
>
>       CDC Header:
>         bcdCDC               1.10
>       CDC Call Management:
>         bmCapabilities       0x01
>           call management
>         bDataInterface          1
>       CDC ACM:
>         bmCapabilities       0x02
>           line coding and serial state
>       CDC Union:
>         bMasterInterface        0
>         bSlaveInterface         1
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x8a  EP 10 IN
>         bmAttributes            3
>           Transfer Type            Interrupt
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0008  1x 8 bytes
>         bInterval              42
>
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        1
>       bAlternateSetting       0
>       bNumEndpoints           2
>       bInterfaceClass        10 CDC Data
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0
>       iInterface              5 Console
>
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x03  EP 3 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0020  1x 32 bytes
>         bInterval               0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x84  EP 4 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0020  1x 32 bytes
>         bInterval               0
>
>     Interface Descriptor:
>       bLength                 9
>       bDescriptorType         4
>       bInterfaceNumber        2
>       bAlternateSetting       0
>       bNumEndpoints           2
>       bInterfaceClass        10 CDC Data
>       bInterfaceSubClass      0 Unused
>       bInterfaceProtocol      0
>       iInterface              6 Data
>
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x01  EP 1 OUT
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0020  1x 32 bytes
>         bInterval               0
>       Endpoint Descriptor:
>         bLength                 7
>         bDescriptorType         5
>         bEndpointAddress     0x82  EP 2 IN
>         bmAttributes            2
>           Transfer Type            Bulk
>           Synch Type               None
>           Usage Type               Data
>         wMaxPacketSize     0x0020  1x 32 bytes
>         bInterval               0
> Device Status:     0x0001
>   Self Powered

Take note this device will most likely not work under Windows. You need to
use IAD to have a CDC-ACM inside a USB Composite Device.

Reference: http://www.microchip.com/forums/fb.ashx?m=268852

-- 
Xiaofan