},
    // Notification endpoint standard descriptor
    {
        sizeof(USBEndpointDescriptor), 
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_IN,
                                      CDCDSerialDriverDescriptors_NOTIFICATION),
        USBEndpointDescriptor_INTERRUPT,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_NOTIFICATION),
            USBEndpointDescriptor_MAXINTERRUPTSIZE_HS),
        10 // Endpoint is polled every 10ms
    },
    // Data class interface standard descriptor
    {
        sizeof(USBInterfaceDescriptor),
        USBGenericDescriptor_INTERFACE,
        1, // This is interface #1
        0, // This is alternate setting #0 for this interface
        2, // This interface uses 2 endpoints
        CDCDataInterfaceDescriptor_CLASS,
        CDCDataInterfaceDescriptor_SUBCLASS,
        CDCDataInterfaceDescriptor_NOPROTOCOL,
        0  // No string descriptor for this interface
    },
    // Bulk-OUT endpoint standard descriptor
    {
        sizeof(USBEndpointDescriptor), 
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_OUT,
                                      CDCDSerialDriverDescriptors_DATAOUT),
        USBEndpointDescriptor_BULK,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAOUT),
            USBEndpointDescriptor_MAXBULKSIZE_HS),
        0 // Must be 0 for full-speed bulk endpoints
    },
    // Bulk-IN endpoint descriptor
    {
        sizeof(USBEndpointDescriptor),
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_IN,
                                      CDCDSerialDriverDescriptors_DATAIN),
        USBEndpointDescriptor_BULK,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAIN),
            USBEndpointDescriptor_MAXBULKSIZE_HS),
        0 // Must be 0 for full-speed bulk endpoints
    },
};


/// Configuration descriptor (when in high-speed).
const CDCDSerialDriverConfigurationDescriptors configurationDescriptorsHS = {

    // Standard configuration descriptor
    {
        sizeof(USBConfigurationDescriptor),
        USBGenericDescriptor_CONFIGURATION,
        sizeof(CDCDSerialDriverConfigurationDescriptors),
        2, // There are two interfaces in this configuration
        1, // This is configuration #1
        0, // No string descriptor for this configuration
        BOARD_USB_BMATTRIBUTES,
        USBConfigurationDescriptor_POWER(100)
    },
    // Communication class interface standard descriptor
    {
        sizeof(USBInterfaceDescriptor),
        USBGenericDescriptor_INTERFACE,
        0, // This is interface #0
        0, // This is alternate setting #0 for this interface
        1, // This interface uses 1 endpoint
        CDCCommunicationInterfaceDescriptor_CLASS,
        CDCCommunicationInterfaceDescriptor_ABSTRACTCONTROLMODEL,
        CDCCommunicationInterfaceDescriptor_NOPROTOCOL,
        0  // No string descriptor for this interface
    },
    // Class-specific header functional descriptor
    {
        sizeof(CDCHeaderDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_HEADER,
        CDCGenericDescriptor_CDC1_10
    },
    // Class-specific call management functional descriptor
    {
        sizeof(CDCCallManagementDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_CALLMANAGEMENT,
        CDCCallManagementDescriptor_SELFCALLMANAGEMENT,
        0 // No associated data interface
    },
    // Class-specific abstract control management functional descriptor
    {
        sizeof(CDCAbstractControlManagementDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_ABSTRACTCONTROLMANAGEMENT,
        CDCAbstractControlManagementDescriptor_LINE
    },
    // Class-specific union functional descriptor with one slave interface
    {
        sizeof(CDCUnionDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_UNION,
        0, // Number of master interface is #0
        1 // First slave interface is #1
    },
    // Notification endpoint standard descriptor
    {
        sizeof(USBEndpointDescriptor), 
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_IN,
                                      CDCDSerialDriverDescriptors_NOTIFICATION),
        USBEndpointDescriptor_INTERRUPT,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_NOTIFICATION),
            USBEndpointDescriptor_MAXINTERRUPTSIZE_HS),
        10 // Endpoint is polled every 10ms
    },
    // Data class interface standard descriptor
    {
        sizeof(USBInterfaceDescriptor),
        USBGenericDescriptor_INTERFACE,
        1, // This is interface #1
        0, // This is alternate setting #0 for this interface
        2, // This interface uses 2 endpoints
        CDCDataInterfaceDescriptor_CLASS,
        CDCDataInterfaceDescriptor_SUBCLASS,
        CDCDataInterfaceDescriptor_NOPROTOCOL,
        0  // No string descriptor for this interface
    },
    // Bulk-OUT endpoint standard descriptor
    {
        sizeof(USBEndpointDescriptor), 
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_OUT,
                                      CDCDSerialDriverDescriptors_DATAOUT),
        USBEndpointDescriptor_BULK,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAOUT),
            USBEndpointDescriptor_MAXBULKSIZE_HS),
        0 // Must be 0 for full-speed bulk endpoints
    },
    // Bulk-IN endpoint descriptor
    {
        sizeof(USBEndpointDescriptor),
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_IN,
                                      CDCDSerialDriverDescriptors_DATAIN),
        USBEndpointDescriptor_BULK,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAIN),
            USBEndpointDescriptor_MAXBULKSIZE_HS),
        0 // Must be 0 for full-speed bulk endpoints
    },
};

/// Other-speed configuration descriptor (when in high-speed).
const CDCDSerialDriverConfigurationDescriptors otherSpeedDescriptorsHS = {

    // Standard configuration descriptor
    {
        sizeof(USBConfigurationDescriptor),
        USBGenericDescriptor_OTHERSPEEDCONFIGURATION,
        sizeof(CDCDSerialDriverConfigurationDescriptors),
        2, // There are two interfaces in this configuration
        1, // This is configuration #1
        0, // No string descriptor for this configuration
        BOARD_USB_BMATTRIBUTES,
        USBConfigurationDescriptor_POWER(100)
    },
    // Communication class interface standard descriptor
    {
        sizeof(USBInterfaceDescriptor),
        USBGenericDescriptor_INTERFACE,
        0, // This is interface #0
        0, // This is alternate setting #0 for this interface
        1, // This interface uses 1 endpoint
        CDCCommunicationInterfaceDescriptor_CLASS,
        CDCCommunicationInterfaceDescriptor_ABSTRACTCONTROLMODEL,
        CDCCommunicationInterfaceDescriptor_NOPROTOCOL,
        0  // No string descriptor for this interface
    },
    // Class-specific header functional descriptor
    {
        sizeof(CDCHeaderDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_HEADER,
        CDCGenericDescriptor_CDC1_10
    },
    // Class-specific call management functional descriptor
    {
        sizeof(CDCCallManagementDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_CALLMANAGEMENT,
        CDCCallManagementDescriptor_SELFCALLMANAGEMENT,
        0 // No associated data interface
    },
    // Class-specific abstract control management functional descriptor
    {
        sizeof(CDCAbstractControlManagementDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_ABSTRACTCONTROLMANAGEMENT,
        CDCAbstractControlManagementDescriptor_LINE
    },
    // Class-specific union functional descriptor with one slave interface
    {
        sizeof(CDCUnionDescriptor),
        CDCGenericDescriptor_INTERFACE,
        CDCGenericDescriptor_UNION,
        0, // Number of master interface is #0
        1 // First slave interface is #1
    },
    // Notification endpoint standard descriptor
    {
        sizeof(USBEndpointDescriptor), 
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_IN,
                                      CDCDSerialDriverDescriptors_NOTIFICATION),
        USBEndpointDescriptor_INTERRUPT,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_NOTIFICATION),
            USBEndpointDescriptor_MAXINTERRUPTSIZE_FS),
        10 // Endpoint is polled every 10ms
    },
    // Data class interface standard descriptor
    {
        sizeof(USBInterfaceDescriptor),
        USBGenericDescriptor_INTERFACE,
        1, // This is interface #1
        0, // This is alternate setting #0 for this interface
        2, // This interface uses 2 endpoints
        CDCDataInterfaceDescriptor_CLASS,
        CDCDataInterfaceDescriptor_SUBCLASS,
        CDCDataInterfaceDescriptor_NOPROTOCOL,
        0  // No string descriptor for this interface
    },
    // Bulk-OUT endpoint standard descriptor
    {
        sizeof(USBEndpointDescriptor), 
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_OUT,
                                      CDCDSerialDriverDescriptors_DATAOUT),
        USBEndpointDescriptor_BULK,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAOUT),
            USBEndpointDescriptor_MAXBULKSIZE_FS),
        0 // Must be 0 for full-speed bulk endpoints
    },
    // Bulk-IN endpoint descriptor
    {
        sizeof(USBEndpointDescriptor),
        USBGenericDescriptor_ENDPOINT,
        USBEndpointDescriptor_ADDRESS(USBEndpointDescriptor_IN,
                                      CDCDSerialDriverDescriptors_DATAIN),
        USBEndpointDescriptor_BULK,
        MIN(BOARD_USB_ENDPOINTS_MAXPACKETSIZE(CDCDSerialDriverDescriptors_DATAIN),
            USBEndpointDescriptor_MAXBULKSIZE_FS),
        0 // Must be 0 for full-speed bulk endpoints
    },
};
#endif

// Product string descriptor
const unsigned char productStringDescriptor[] = {

    USBStringDescriptor_LENGTH(13),
    USBGenericDescriptor_STRING,
    USBStringDescriptor_UNICODE('A'),
    USBStringDescriptor_UNICODE('T'),
    USBStringDescriptor_UNICODE('9'),
    USBStringDescriptor_UNICODE('1'),
    USBStringDescriptor_UNICODE('U'),
    USBStringDescriptor_UNICODE('S'),
    USBStringDescriptor_UNICODE('B'),
    USBStringDescriptor_UNICODE('S'),
    USBStringDescriptor_UNICODE('e'),
    USBStringDescriptor_UNICODE('r'),
    USBStringDescriptor_UNICODE('i'),
    USBStringDescriptor_UNICODE('a'),
    USBStringDescriptor_UNICODE('l')
};

/// List of string descriptors used by the device
const unsigned char *stringDescriptors[] = {

    languageIdStringDescriptor,
    productStringDescriptor,
};

/// List of standard descriptors for the serial driver.
USBDDriverDescriptors cdcdSerialDriverDescriptors = {

    &deviceDescriptor,
    (USBConfigurationDescriptor *) &(configurationDescriptors),
#ifdef BOARD_USB_UDPHS
    &qualifierDescriptor,
    (USBConfigurationDescriptor *) &(otherSpeedDescriptorsFS),
    &deviceDescriptor,
    (USBConfigurationDescriptor *) &(configurationDescriptorsHS),
    &qualifierDescriptor,
    (USBConfigurationDescriptor *) &(otherSpeedDescriptorsHS),
#else
    0, // No full-speed device qualifier descriptor
    0, // No full-speed other speed configuration
    0, // No high-speed device descriptor
    0, // No high-speed configuration descriptor
    0, // No high-speed device qualifier descriptor
    0, // No high-speed other speed configuration descriptor

#endif
    stringDescriptors,
    2 // 2 string descriptors in list
};