VID parser problem with usbdevs

[Xiaofan Chen]

On 10/11/07, M. Warner Losh <imp at bsdimp.com> wrote:
> In message:
> : ===[mcuee] ~/Desktop/build/fsusb/fsusb-0.1.11-2 # sudo usbdevs -v
> : Controller /dev/usb1:
> : addr 126: full speed, power 100 mA, config 1, product 0x000b(0x000b),
> : I-Tuner Networks(0x04d8), rev 0.00
> : port 4 addr 126: full speed, power 100 mA, config 1, product
> : 0x000b(0x000b), I-Tuner Networks(0x04d8), rev 0.00
>
> While 4d8 is for microchip technology, we get the name that we print
> here directly from the usb device itself.
> What makes you think that the vendor ID is parsed wrong?
>
I have read the firmware source codes so I do not think there
is anything called "I-Tuner" in the descriptors or anywhere in the
firmware. 04d8/000b is the bootloader firmware VID/PID for
Microchip PICDEM FS USB demo board.

The following is the relevant descriptor.


#pragma romdata

/* Device Descriptor */
rom USB_DEV_DSC device_dsc=
{
   sizeof(USB_DEV_DSC),    // Size of this descriptor in bytes
   DSC_DEV,                // DEVICE descriptor type
   0x0200,                 // USB Spec Release Number in BCD format
   0x00,                   // Class Code
   0x00,                   // Subclass code
   0x00,                   // Protocol code
   EP0_BUFF_SIZE,          // Max packet size for EP0, see usbcfg.h
   0x04D8,                 // Vendor ID
   0x000b,                 // Product ID: PICDEM FS USB (Boot Mode)
   0x0001,                 // Device release number in BCD format
   0x00,                   // Manufacturer string index
   0x00,                   // Product string index
   0x00,                   // Device serial number string index
   0x01                    // Number of possible configurations
};

/* Configuration 1 Descriptor */
CFG01=
{
   /* Configuration Descriptor */
   sizeof(USB_CFG_DSC),    // Size of this descriptor in bytes
   DSC_CFG,                // CONFIGURATION descriptor type
   sizeof(cfg01),          // Total length of data for this cfg
   1,                      // Number of interfaces in this cfg
   1,                      // Index value of this configuration
   0,                      // Configuration string index
   _DEFAULT,               // Attributes, see usbdefs_std_dsc.h
   50,                     // Max power consumption (2X mA)

   /* Interface Descriptor */
   sizeof(USB_INTF_DSC),   // Size of this descriptor in bytes
   DSC_INTF,               // INTERFACE descriptor type
   0,                      // Interface Number
   0,                      // Alternate Setting Number
   2,                      // Number of endpoints in this intf
   0x00,                   // Class code
   0x00,                   // Subclass code
   0x00,                   // Protocol code
   0,                      // Interface string index
   /* Endpoint Descriptors */
   sizeof(USB_EP_DSC),DSC_EP,_EP01_OUT,_BULK,BOOT_EP_SIZE,0x00,
   sizeof(USB_EP_DSC),DSC_EP,_EP01_IN,_BULK,BOOT_EP_SIZE,0x00
};

rom struct{byte bLength;byte bDscType;word string[1];}sd000={
sizeof(sd000),DSC_STR,0x0409};

So I plug in PICkit 2, another Microchip product. It is fine.

===[mcuee] ~ # sudo usbdev -v
addr 125: full speed, power 100 mA, config 1, PICkit 2 Microcontroller
Programme                      r(0x0033), Microchip Technology
Inc.(0x04d8), rev 0.01
 port 2 addr 125: full speed, power 100 mA, config 1, PICkit 2
Microcontroller P                      rogrammer(0x0033), Microchip
Technology Inc.(0x04d8), rev 0.01

Kind of strange.

Xiaofan