Motorola USB08 - Manual (Page 94)

Designer Reference Manual USB08 Evaluation Board
94 Source Code Files MOTOROLA
Source Code Files
//----------------------------------------------------------------------------
// Standard Interface Descriptor
// according to USB1.1 spec page 202
//
typedef struct {
uchar bLength; // Size of this Descriptor in Bytes
uchar bDescriptorType; // Descriptor Type (=4)
uchar bInterfaceNumber; // Number of *this* Interface (0..)
uchar bAlternateSetting; // Alternative for this Interface (if any)
uchar bNumEndpoints; // No of EPs used by this IF (excl. EP0)
uchar bInterfaceClass; // Interface Class Code
uchar bInterfaceSubClass; // Interface Subclass Code
uchar bInterfaceProtocol; // Interface Protocol Code
uchar iInterface; // Index of String Desc for this Interface
} interface_descriptor;
//----------------------------------------------------------------------------
// Standard Endpoint Descriptor
// according to USB1.1 spec page 203
//
typedef struct {
uchar bLength; // Size of this Descriptor in Bytes
uchar bDescriptorType; // Descriptor Type (=5)
uchar bEndpointAddress; // Endpoint Address (Number + Direction)
uchar bmAttributes; // Endpoint Attributes (Transfer Type)
iword wMaxPacketSize; // Max. Endpoint Packet Size
uchar bInterval; // Polling Interval (Interrupt) in ms
} endpoint_descriptor;
//----------------------------------------------------------------------------
// Structure of Setup Packet sent during
// SETUP Stage of Standard Device Requests
// according to USB1.1 spec page 183
//
typedef struct {
uchar bmRequestType; // Characteristics (Direction,Type,Recipient)
uchar bRequest; // Standard Request Code
iword wValue; // Value Field
iword wIndex; // Index or Offset Field
iword wLength; // Number of Bytes to transfer (Data Stage)
} setup_buffer;
//----------------------------------------------------------------------------
// USB Status Codes
//
#define US_ATTACHED 0x00 // (not used here)
#define US_POWERED 0x01
#define US_DEFAULT 0x02
#define US_ADDRESSED 0x03
#define US_CONFIGURED 0x04
#define US_SUSPENDED 0x80