Maxim-integrated 73S12xxF Software Manual do Utilizador descarregar pdf (Página 45)

UG_12xxF_016 73S12xxF Software User Guide

Rev. 1.50 45

unsigned int idProduct; // Always 0x0500

unsigned int Device; // 0x4600;

unsigned char iManufacturer; // 0, TBD;

unsigned char iProduct; // 0, TBD;

unsigned char iSerialNum; // 0, TBD;

unsigned char NumConfigs; // 1, TBD;

};

struct USB_Interface_t

{

unsigned char Length; // Always 9.

unsigned char DescriptorType; // Always INTERFACE_DESCRIPTOR = 4.

unsigned char InterfaceNumber; // 0.

unsigned char AlternateSetting; // 0.

unsigned char NumEndPoints; // Always NUMBER_OF_EPS - 1 = 3;

unsigned char InterfaceClass; // 0x0B.

unsigned char InterfaceSubClass; // 0.

unsigned char InterfaceProtocol; // 0.

unsigned char iInterface; // 0.

};

#define CLASS 0x0B //Always 0B for Smart Card Reader

#define SUBCLASS 0

struct USB_EP_t

{

unsigned char Length; // Always 7.

unsigned char DescriptorType; // Always EP_DESCRIPTOR = 5.

unsigned char EndpointAddress; // (IN or OUT) plus (1 or 2).

unsigned char Attributes; // BULK or INTERRUPT.

unsigned int MaxPacketSize; // 16, 32 or 64.

unsigned char Interval; // 0 for BULK. 10 for INTERRUPT.

};

#define IN 0x80

#define OUT 0x00

#define BULK 0x02

#define INTERRUPT 0x03

#define INTERVAL 10 // Interrupt EndPoint interval in frames (about 10 msec).

struct USB_Config_t

{

unsigned char Length; // Always 9.

unsigned char DescriptorType; // Always CONFIGURATION_DESCRIPTOR = 2.

unsigned char TotalLengthL; // CONFIG_DESC_TOTAL_SIZE = 93

// (One Interface, three Endpoints).

unsigned char TotalLengthH; // Always 0.

unsigned char NumInterfaces; // NUMBER_OF_INTERFACES = 1.

unsigned char ConfigurationValue; // Always 1.

unsigned char iConfiguration; // Application specific.

unsigned char Attributes; // Application specific.

unsigned char MaxPower; // Application specific.

struct USB_Interface_t I;

};

#define ATTRIBUTES BIT7 | SELF_POWERED // application specific, self-powered

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