/elec/audio-switcher : contents of src/Descriptors.c at revision 6

: (revision 6)

To get this branch, use:

bzr branch
http://bzr.ed.am/elec/audio-switcher

/*

  AUDIO SWITCHER

  Based on a serial device demonstration from the LUFA project
  (www.lufa-lib.org).  LUFA is Copyright (C) Dean Camera, 2012.

  Changes made to the serial device demonstration program are
  Copyright (C) Tim Marston, 2012.

  For more information:
    * see README, or
    * visit http://ed.am/

*/

/*
  Copyright 2012  Dean Camera (dean [at] fourwalledcubicle [dot] com)

  Permission to use, copy, modify, distribute, and sell this
  software and its documentation for any purpose is hereby granted
  without fee, provided that the above copyright notice appear in
  all copies and that both that the copyright notice and this
  permission notice and warranty disclaimer appear in supporting
  documentation, and that the name of the author not be used in
  advertising or publicity pertaining to distribution of the
  software without specific, written prior permission.

  The author disclaim all warranties with regard to this
  software, including all implied warranties of merchantability
  and fitness.  In no event shall the author be liable for any
  special, indirect or consequential damages or any damages
  whatsoever resulting from loss of use, data or profits, whether
  in an action of contract, negligence or other tortious action,
  arising out of or in connection with the use or performance of
  this software.
*/

/** \file
 *
 *  USB Device Descriptors, for library use when in USB device mode.
 *  Descriptors are special computer-readable structures which the host
 *  requests upon device enumeration, to determine the device's capabilities
 *  and functions.
 */

#include "Descriptors.h"


/** Device descriptor structure.  This descriptor, located in FLASH memory,
 *  describes the overall device characteristics, including the supported USB
 *  version, control endpoint size and the number of device configurations.
 *  The descriptor is read out by the USB host when the enumeration process
 *  begins.
 */
const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
{
	.Header                 = {
		.Size = sizeof(USB_Descriptor_Device_t),
		.Type = DTYPE_Device
	},

	.USBSpecification       = VERSION_BCD(01.10),
	.Class                  = CDC_CSCP_CDCClass,
	.SubClass               = CDC_CSCP_NoSpecificSubclass,
	.Protocol               = CDC_CSCP_NoSpecificProtocol,

	.Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,

	.VendorID               = 0x03EB,
	.ProductID              = 0xba7f, // 0x2044,
	.ReleaseNumber          = VERSION_BCD(00.01),

	.ManufacturerStrIndex   = 0x01,
	.ProductStrIndex        = 0x02,
	.SerialNumStrIndex      = USE_INTERNAL_SERIAL,

	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
};

/** Configuration descriptor structure. This descriptor, located in FLASH
 *  memory, describes the usage of the device in one of its supported
 *  configurations, including information about any device interfaces and
 *  endpoints.  The descriptor is read out by the USB host during the
 *  enumeration process when selecting a configuration so that the host may
 *  correctly communicate with the USB device.
 */
const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
{
	.Config =
	{
		.Header                 = {
			.Size = sizeof(USB_Descriptor_Configuration_Header_t),
			.Type = DTYPE_Configuration,
		},

		.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
		.TotalInterfaces        = 2,

		.ConfigurationNumber    = 1,
		.ConfigurationStrIndex  = NO_DESCRIPTOR,

		.ConfigAttributes       = (USB_CONFIG_ATTR_RESERVED |
								   USB_CONFIG_ATTR_SELFPOWERED),

		.MaxPowerConsumption    = USB_CONFIG_POWER_MA(100),
	},

	.CDC_CCI_Interface =
	{
		.Header                 = {
			.Size = sizeof(USB_Descriptor_Interface_t),
			.Type = DTYPE_Interface,
		},

		.InterfaceNumber        = 0,
		.AlternateSetting       = 0,

		.TotalEndpoints         = 1,

		.Class                  = CDC_CSCP_CDCClass,
		.SubClass               = CDC_CSCP_ACMSubclass,
		.Protocol               = CDC_CSCP_ATCommandProtocol,

		.InterfaceStrIndex      = NO_DESCRIPTOR,
	},

	.CDC_Functional_Header =
	{
		.Header                 = {
			.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t),
			.Type = DTYPE_CSInterface,
		},

		.Subtype                = CDC_DSUBTYPE_CSInterface_Header,

		.CDCSpecification       = VERSION_BCD(01.10),
	},

	.CDC_Functional_ACM =
	{
		.Header                 = {
			.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t),
			.Type = DTYPE_CSInterface,
		},

		.Subtype                = CDC_DSUBTYPE_CSInterface_ACM,

		.Capabilities           = 0x06,
	},

	.CDC_Functional_Union =
	{
		.Header                 = {
			.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t),
			.Type = DTYPE_CSInterface,
		},

		.Subtype                = CDC_DSUBTYPE_CSInterface_Union,

		.MasterInterfaceNumber  = 0,
		.SlaveInterfaceNumber   = 1,
	},

	.CDC_NotificationEndpoint =
	{
		.Header                 = {
			.Size = sizeof(USB_Descriptor_Endpoint_t),
			.Type = DTYPE_Endpoint,
		},

		.EndpointAddress        = CDC_NOTIFICATION_EPADDR,
		.Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | 
								   ENDPOINT_USAGE_DATA),
		.EndpointSize           = CDC_NOTIFICATION_EPSIZE,
		.PollingIntervalMS      = 0xFF,
	},

	.CDC_DCI_Interface =
	{
		.Header                 = {
			.Size = sizeof(USB_Descriptor_Interface_t),
			.Type = DTYPE_Interface,
		},

		.InterfaceNumber        = 1,
		.AlternateSetting       = 0,

		.TotalEndpoints         = 2,

		.Class                  = CDC_CSCP_CDCDataClass,
		.SubClass               = CDC_CSCP_NoDataSubclass,
		.Protocol               = CDC_CSCP_NoDataProtocol,

		.InterfaceStrIndex      = NO_DESCRIPTOR,
	},

	.CDC_DataOutEndpoint =
	{
		.Header                 = {
			.Size = sizeof(USB_Descriptor_Endpoint_t),
			.Type = DTYPE_Endpoint,
		},

		.EndpointAddress        = CDC_RX_EPADDR,
		.Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC |
								   ENDPOINT_USAGE_DATA),
		.EndpointSize           = CDC_TXRX_EPSIZE,
		.PollingIntervalMS      = 0x05,
	},

	.CDC_DataInEndpoint =
	{
		.Header                 = {
			.Size = sizeof(USB_Descriptor_Endpoint_t),
			.Type = DTYPE_Endpoint,
		},

		.EndpointAddress        = CDC_TX_EPADDR,
		.Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC |
								   ENDPOINT_USAGE_DATA),
		.EndpointSize           = CDC_TXRX_EPSIZE,
		.PollingIntervalMS      = 0x05,
	}
};

/** Language descriptor structure.  This descriptor, located in FLASH memory,
 *  is returned when the host requests the string descriptor with index 0 (the
 *  first index).  It is actually an array of 16-bit integers, which indicate
 *  via the language ID table available at USB.org what languages the device
 *  supports for its string descriptors.
 */
const USB_Descriptor_String_t PROGMEM LanguageString =
{
	.Header                 = {
		.Size = USB_STRING_LEN(1),
		.Type = DTYPE_String,
	},

	.UnicodeString          = {LANGUAGE_ID_ENG}
};

/** Manufacturer descriptor string.  This is a Unicode string containing the
 *  manufacturer's details in human readable form, and is read out upon request
 *  by the host when the appropriate string ID is requested, listed in the
 *  Device Descriptor.
 */
const USB_Descriptor_String_t PROGMEM ManufacturerString =
{
	.Header                 = {
		.Size = USB_STRING_LEN(4),
		.Type = DTYPE_String,
	},

	.UnicodeString          = L"edam"
};

/** Product descriptor string.  This is a Unicode string containing the
 *  product's details in human readable form, and is read out upon request by
 *  the host when the appropriate string ID is requested, listed in the Device
 *  Descriptor.
 */
const USB_Descriptor_String_t PROGMEM ProductString =
{
	.Header                 = {
		.Size = USB_STRING_LEN(14),
		.Type = DTYPE_String,
	},

	.UnicodeString          = L"Audio Switcher"
};

/** This function is called by the library when in device mode, and must be
 *  overridden (see library "USB Descriptors" documentation) by the application
 *  code so that the address and size of a requested descriptor can be given to
 *  the USB library.  When the device receives a Get Descriptor request on the
 *  control endpoint, this function is called so that the descriptor details
 *  can be passed back and the appropriate descriptor sent back to the USB
 *  host.
 */
uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
                                    const uint8_t wIndex,
                                    const void** const DescriptorAddress)
{
	const uint8_t  DescriptorType   = (wValue >> 8);
	const uint8_t  DescriptorNumber = (wValue & 0xFF);

	const void* Address = NULL;
	uint16_t    Size    = NO_DESCRIPTOR;

	switch (DescriptorType)
	{
	case DTYPE_Device:
		Address = &DeviceDescriptor;
		Size    = sizeof(USB_Descriptor_Device_t);
		break;
	case DTYPE_Configuration:
		Address = &ConfigurationDescriptor;
		Size    = sizeof(USB_Descriptor_Configuration_t);
		break;
	case DTYPE_String:
		switch (DescriptorNumber)
		{
		case 0x00:
			Address = &LanguageString;
			Size    = pgm_read_byte(&LanguageString.Header.Size);
			break;
		case 0x01:
			Address = &ManufacturerString;
			Size    = pgm_read_byte(&ManufacturerString.Header.Size);
			break;
		case 0x02:
			Address = &ProductString;
			Size    = pgm_read_byte(&ProductString.Header.Size);
			break;
		}
		
		break;
	}

	*DescriptorAddress = Address;
	return Size;
}


1 by Tim Marston initial commit	1	/*
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	2
	3	AUDIO SWITCHER
	4
	5	Based on a serial device demonstration from the LUFA project
	6	(www.lufa-lib.org). LUFA is Copyright (C) Dean Camera, 2012.
	7
	8	Changes made to the serial device demonstration program are
	9	Copyright (C) Tim Marston, 2012.
	10
	11	For more information:
	12	* see README, or
	13	* visit http://ed.am/
	14
1 by Tim Marston initial commit	15	*/
	16
	17	/*
	18	Copyright 2012 Dean Camera (dean [at] fourwalledcubicle [dot] com)
	19
	20	Permission to use, copy, modify, distribute, and sell this
	21	software and its documentation for any purpose is hereby granted
	22	without fee, provided that the above copyright notice appear in
	23	all copies and that both that the copyright notice and this
	24	permission notice and warranty disclaimer appear in supporting
	25	documentation, and that the name of the author not be used in
	26	advertising or publicity pertaining to distribution of the
	27	software without specific, written prior permission.
	28
	29	The author disclaim all warranties with regard to this
	30	software, including all implied warranties of merchantability
	31	and fitness. In no event shall the author be liable for any
	32	special, indirect or consequential damages or any damages
	33	whatsoever resulting from loss of use, data or profits, whether
	34	in an action of contract, negligence or other tortious action,
	35	arising out of or in connection with the use or performance of
	36	this software.
	37	*/
	38
	39	/** \file
	40	*
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	41	* USB Device Descriptors, for library use when in USB device mode.
	42	* Descriptors are special computer-readable structures which the host
	43	* requests upon device enumeration, to determine the device's capabilities
	44	* and functions.
1 by Tim Marston initial commit	45	*/
	46
	47	#include "Descriptors.h"
	48
	49
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	50	/** Device descriptor structure. This descriptor, located in FLASH memory,
	51	* describes the overall device characteristics, including the supported USB
	52	* version, control endpoint size and the number of device configurations.
	53	* The descriptor is read out by the USB host when the enumeration process
	54	* begins.
1 by Tim Marston initial commit	55	*/
	56	const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
	57	{
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	58	.Header = {
	59	.Size = sizeof(USB_Descriptor_Device_t),
	60	.Type = DTYPE_Device
	61	},
1 by Tim Marston initial commit	62
	63	.USBSpecification = VERSION_BCD(01.10),
	64	.Class = CDC_CSCP_CDCClass,
	65	.SubClass = CDC_CSCP_NoSpecificSubclass,
	66	.Protocol = CDC_CSCP_NoSpecificProtocol,
	67
	68	.Endpoint0Size = FIXED_CONTROL_ENDPOINT_SIZE,
	69
	70	.VendorID = 0x03EB,
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	71	.ProductID = 0xba7f, // 0x2044,
1 by Tim Marston initial commit	72	.ReleaseNumber = VERSION_BCD(00.01),
	73
	74	.ManufacturerStrIndex = 0x01,
	75	.ProductStrIndex = 0x02,
	76	.SerialNumStrIndex = USE_INTERNAL_SERIAL,
	77
	78	.NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
	79	};
	80
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	81	/** Configuration descriptor structure. This descriptor, located in FLASH
	82	* memory, describes the usage of the device in one of its supported
	83	* configurations, including information about any device interfaces and
	84	* endpoints. The descriptor is read out by the USB host during the
	85	* enumeration process when selecting a configuration so that the host may
	86	* correctly communicate with the USB device.
1 by Tim Marston initial commit	87	*/
	88	const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
	89	{
	90	.Config =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	91	{
	92	.Header = {
	93	.Size = sizeof(USB_Descriptor_Configuration_Header_t),
	94	.Type = DTYPE_Configuration,
1 by Tim Marston initial commit	95	},
1 by Tim Marston initial commit	96
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	97	.TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
	98	.TotalInterfaces = 2,
	99
	100	.ConfigurationNumber = 1,
	101	.ConfigurationStrIndex = NO_DESCRIPTOR,
	102
	103	.ConfigAttributes = (USB_CONFIG_ATTR_RESERVED \|
	104	USB_CONFIG_ATTR_SELFPOWERED),
	105
	106	.MaxPowerConsumption = USB_CONFIG_POWER_MA(100),
	107	},
	108
1 by Tim Marston initial commit	109	.CDC_CCI_Interface =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	110	{
	111	.Header = {
	112	.Size = sizeof(USB_Descriptor_Interface_t),
	113	.Type = DTYPE_Interface,
1 by Tim Marston initial commit	114	},
1 by Tim Marston initial commit	115
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	116	.InterfaceNumber = 0,
	117	.AlternateSetting = 0,
	118
	119	.TotalEndpoints = 1,
	120
	121	.Class = CDC_CSCP_CDCClass,
	122	.SubClass = CDC_CSCP_ACMSubclass,
	123	.Protocol = CDC_CSCP_ATCommandProtocol,
	124
	125	.InterfaceStrIndex = NO_DESCRIPTOR,
	126	},
	127
1 by Tim Marston initial commit	128	.CDC_Functional_Header =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	129	{
	130	.Header = {
	131	.Size = sizeof(USB_CDC_Descriptor_FunctionalHeader_t),
	132	.Type = DTYPE_CSInterface,
1 by Tim Marston initial commit	133	},
1 by Tim Marston initial commit	134
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	135	.Subtype = CDC_DSUBTYPE_CSInterface_Header,
	136
	137	.CDCSpecification = VERSION_BCD(01.10),
	138	},
	139
1 by Tim Marston initial commit	140	.CDC_Functional_ACM =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	141	{
	142	.Header = {
	143	.Size = sizeof(USB_CDC_Descriptor_FunctionalACM_t),
	144	.Type = DTYPE_CSInterface,
1 by Tim Marston initial commit	145	},
1 by Tim Marston initial commit	146
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	147	.Subtype = CDC_DSUBTYPE_CSInterface_ACM,
	148
	149	.Capabilities = 0x06,
	150	},
	151
1 by Tim Marston initial commit	152	.CDC_Functional_Union =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	153	{
	154	.Header = {
	155	.Size = sizeof(USB_CDC_Descriptor_FunctionalUnion_t),
	156	.Type = DTYPE_CSInterface,
1 by Tim Marston initial commit	157	},
1 by Tim Marston initial commit	158
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	159	.Subtype = CDC_DSUBTYPE_CSInterface_Union,
	160
	161	.MasterInterfaceNumber = 0,
	162	.SlaveInterfaceNumber = 1,
	163	},
	164
1 by Tim Marston initial commit	165	.CDC_NotificationEndpoint =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	166	{
	167	.Header = {
	168	.Size = sizeof(USB_Descriptor_Endpoint_t),
	169	.Type = DTYPE_Endpoint,
1 by Tim Marston initial commit	170	},
1 by Tim Marston initial commit	171
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	172	.EndpointAddress = CDC_NOTIFICATION_EPADDR,
	173	.Attributes = (EP_TYPE_INTERRUPT \| ENDPOINT_ATTR_NO_SYNC \|
	174	ENDPOINT_USAGE_DATA),
	175	.EndpointSize = CDC_NOTIFICATION_EPSIZE,
	176	.PollingIntervalMS = 0xFF,
	177	},
	178
1 by Tim Marston initial commit	179	.CDC_DCI_Interface =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	180	{
	181	.Header = {
	182	.Size = sizeof(USB_Descriptor_Interface_t),
	183	.Type = DTYPE_Interface,
1 by Tim Marston initial commit	184	},
1 by Tim Marston initial commit	185
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	186	.InterfaceNumber = 1,
	187	.AlternateSetting = 0,
	188
	189	.TotalEndpoints = 2,
	190
	191	.Class = CDC_CSCP_CDCDataClass,
	192	.SubClass = CDC_CSCP_NoDataSubclass,
	193	.Protocol = CDC_CSCP_NoDataProtocol,
	194
	195	.InterfaceStrIndex = NO_DESCRIPTOR,
	196	},
	197
1 by Tim Marston initial commit	198	.CDC_DataOutEndpoint =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	199	{
	200	.Header = {
	201	.Size = sizeof(USB_Descriptor_Endpoint_t),
	202	.Type = DTYPE_Endpoint,
1 by Tim Marston initial commit	203	},
1 by Tim Marston initial commit	204
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	205	.EndpointAddress = CDC_RX_EPADDR,
	206	.Attributes = (EP_TYPE_BULK \| ENDPOINT_ATTR_NO_SYNC \|
	207	ENDPOINT_USAGE_DATA),
	208	.EndpointSize = CDC_TXRX_EPSIZE,
	209	.PollingIntervalMS = 0x05,
	210	},
	211
1 by Tim Marston initial commit	212	.CDC_DataInEndpoint =
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	213	{
	214	.Header = {
	215	.Size = sizeof(USB_Descriptor_Endpoint_t),
	216	.Type = DTYPE_Endpoint,
	217	},
1 by Tim Marston initial commit	218
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	219	.EndpointAddress = CDC_TX_EPADDR,
	220	.Attributes = (EP_TYPE_BULK \| ENDPOINT_ATTR_NO_SYNC \|
	221	ENDPOINT_USAGE_DATA),
	222	.EndpointSize = CDC_TXRX_EPSIZE,
	223	.PollingIntervalMS = 0x05,
	224	}
1 by Tim Marston initial commit	225	};
1 by Tim Marston initial commit	226
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	227	/** Language descriptor structure. This descriptor, located in FLASH memory,
	228	* is returned when the host requests the string descriptor with index 0 (the
	229	* first index). It is actually an array of 16-bit integers, which indicate
	230	* via the language ID table available at USB.org what languages the device
	231	* supports for its string descriptors.
1 by Tim Marston initial commit	232	*/
	233	const USB_Descriptor_String_t PROGMEM LanguageString =
	234	{
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	235	.Header = {
	236	.Size = USB_STRING_LEN(1),
	237	.Type = DTYPE_String,
	238	},
1 by Tim Marston initial commit	239
	240	.UnicodeString = {LANGUAGE_ID_ENG}
	241	};
	242
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	243	/** Manufacturer descriptor string. This is a Unicode string containing the
	244	* manufacturer's details in human readable form, and is read out upon request
	245	* by the host when the appropriate string ID is requested, listed in the
	246	* Device Descriptor.
1 by Tim Marston initial commit	247	*/
	248	const USB_Descriptor_String_t PROGMEM ManufacturerString =
	249	{
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	250	.Header = {
	251	.Size = USB_STRING_LEN(4),
	252	.Type = DTYPE_String,
	253	},
1 by Tim Marston initial commit	254
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	255	.UnicodeString = L"edam"
1 by Tim Marston initial commit	256	};
1 by Tim Marston initial commit	257
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	258	/** Product descriptor string. This is a Unicode string containing the
	259	* product's details in human readable form, and is read out upon request by
	260	* the host when the appropriate string ID is requested, listed in the Device
1 by Tim Marston initial commit	261	* Descriptor.
	262	*/
	263	const USB_Descriptor_String_t PROGMEM ProductString =
	264	{
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	265	.Header = {
	266	.Size = USB_STRING_LEN(14),
	267	.Type = DTYPE_String,
	268	},
1 by Tim Marston initial commit	269
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	270	.UnicodeString = L"Audio Switcher"
1 by Tim Marston initial commit	271	};
1 by Tim Marston initial commit	272
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	273	/** This function is called by the library when in device mode, and must be
	274	* overridden (see library "USB Descriptors" documentation) by the application
	275	* code so that the address and size of a requested descriptor can be given to
	276	* the USB library. When the device receives a Get Descriptor request on the
	277	* control endpoint, this function is called so that the descriptor details
	278	* can be passed back and the appropriate descriptor sent back to the USB
	279	* host.
1 by Tim Marston initial commit	280	*/
	281	uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
	282	const uint8_t wIndex,
	283	const void** const DescriptorAddress)
	284	{
	285	const uint8_t DescriptorType = (wValue >> 8);
	286	const uint8_t DescriptorNumber = (wValue & 0xFF);
	287
	288	const void* Address = NULL;
	289	uint16_t Size = NO_DESCRIPTOR;
	290
	291	switch (DescriptorType)
	292	{
6 by Tim Marston cleaned up descriptors file and set manufacturer and product names	293	case DTYPE_Device:
	294	Address = &DeviceDescriptor;
	295	Size = sizeof(USB_Descriptor_Device_t);
	296	break;
	297	case DTYPE_Configuration:
	298	Address = &ConfigurationDescriptor;
	299	Size = sizeof(USB_Descriptor_Configuration_t);
	300	break;
	301	case DTYPE_String:
	302	switch (DescriptorNumber)
	303	{
	304	case 0x00:
	305	Address = &LanguageString;
	306	Size = pgm_read_byte(&LanguageString.Header.Size);
	307	break;
	308	case 0x01:
	309	Address = &ManufacturerString;
	310	Size = pgm_read_byte(&ManufacturerString.Header.Size);
	311	break;
	312	case 0x02:
	313	Address = &ProductString;
	314	Size = pgm_read_byte(&ProductString.Header.Size);
	315	break;
	316	}
	317
	318	break;
1 by Tim Marston initial commit	319	}
	320
	321	*DescriptorAddress = Address;
	322	return Size;
	323	}
	324