Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2020.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2020  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11   Copyright 2010  Matthias Hullin (lufa [at] matthias [dot] hullin [dot] net)
  12
  13   Permission to use, copy, modify, distribute, and sell this
  14   software and its documentation for any purpose is hereby granted
  15   without fee, provided that the above copyright notice appear in
  16   all copies and that both that the copyright notice and this
  17   permission notice and warranty disclaimer appear in supporting
  18   documentation, and that the name of the author not be used in
  19   advertising or publicity pertaining to distribution of the
  20   software without specific, written prior permission.
  21
  22   The author disclaims all warranties with regard to this
  23   software, including all implied warranties of merchantability
  24   and fitness.  In no event shall the author be liable for any
  25   special, indirect or consequential damages or any damages
  26   whatsoever resulting from loss of use, data or profits, whether
  27   in an action of contract, negligence or other tortious action,
  28   arising out of or in connection with the use or performance of
  29   this software.
  30 */
  31
  32 /** \file
  33  *
  34  *  USB Device Descriptors, for library use when in USB device mode. Descriptors are special
  35  *  computer-readable structures which the host requests upon device enumeration, to determine
  36  *  the device's capabilities and functions.
  37  */
  38
  39 #include "Descriptors.h"
  40
  41
  42 /** HID class report descriptor. This is a special descriptor constructed with values from the
  43  *  USBIF HID class specification to describe the reports and capabilities of the HID device. This
  44  *  descriptor is parsed by the host and its contents used to determine what data (and in what encoding)
  45  *  the device will send, and what it may be sent back from the host. Refer to the HID specification for
  46  *  more details on HID report descriptors.
  47  */
  48 const USB_Descriptor_HIDReport_Datatype_t PROGMEM KeyboardReport[] =
  49 {
  50         /* Use the HID class driver's standard Keyboard report.
  51          *   Max simultaneous keys: 6
  52          */
  53         HID_DESCRIPTOR_KEYBOARD(6)
  54 };
  55
  56 /** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
  57  *  device characteristics, including the supported USB version, control endpoint size and the
  58  *  number of device configurations. The descriptor is read out by the USB host when the enumeration
  59  *  process begins.
  60  */
  61 const USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
  62 {
  63         .Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
  64
  65         .USBSpecification       = VERSION_BCD(1,1,0),
  66         .Class                  = USB_CSCP_NoDeviceClass,
  67         .SubClass               = USB_CSCP_NoDeviceSubclass,
  68         .Protocol               = USB_CSCP_NoDeviceProtocol,
  69
  70         .Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
  71
  72         .VendorID               = 0x03EB,
  73         .ProductID              = 0x2061,
  74         .ReleaseNumber          = VERSION_BCD(0,0,1),
  75
  76         .ManufacturerStrIndex   = STRING_ID_Manufacturer,
  77         .ProductStrIndex        = STRING_ID_Product,
  78         .SerialNumStrIndex      = USE_INTERNAL_SERIAL,
  79
  80         .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
  81 };
  82
  83 /** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
  84  *  of the device in one of its supported configurations, including information about any device interfaces
  85  *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
  86  *  a configuration so that the host may correctly communicate with the USB device.
  87  */
  88 const USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
  89 {
  90         .Config =
  91                 {
  92                         .Header                 = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
  93
  94                         .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
  95                         .TotalInterfaces        = 2,
  96
  97                         .ConfigurationNumber    = 1,
  98                         .ConfigurationStrIndex  = NO_DESCRIPTOR,
  99
 100                         .ConfigAttributes       = USB_CONFIG_ATTR_RESERVED,
 101
 102                         .MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)
 103                 },
 104
 105         .MS_Interface =
 106                 {
 107                         .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 108
 109                         .InterfaceNumber        = INTERFACE_ID_MassStorage,
 110                         .AlternateSetting       = 0,
 111
 112                         .TotalEndpoints         = 2,
 113
 114                         .Class                  = MS_CSCP_MassStorageClass,
 115                         .SubClass               = MS_CSCP_SCSITransparentSubclass,
 116                         .Protocol               = MS_CSCP_BulkOnlyTransportProtocol,
 117
 118                         .InterfaceStrIndex      = NO_DESCRIPTOR
 119                 },
 120
 121         .MS_DataInEndpoint =
 122                 {
 123                         .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
 124
 125                         .EndpointAddress        = MASS_STORAGE_IN_EPADDR,
 126                         .Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
 127                         .EndpointSize           = MASS_STORAGE_IO_EPSIZE,
 128                         .PollingIntervalMS      = 0x05
 129                 },
 130
 131         .MS_DataOutEndpoint =
 132                 {
 133                         .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
 134
 135                         .EndpointAddress        = MASS_STORAGE_OUT_EPADDR,
 136                         .Attributes             = (EP_TYPE_BULK | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
 137                         .EndpointSize           = MASS_STORAGE_IO_EPSIZE,
 138                         .PollingIntervalMS      = 0x05
 139                 },
 140
 141         .HID_KeyboardInterface =
 142                 {
 143                         .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 144
 145                         .InterfaceNumber        = INTERFACE_ID_Keyboard,
 146                         .AlternateSetting       = 0,
 147
 148                         .TotalEndpoints         = 1,
 149
 150                         .Class                  = HID_CSCP_HIDClass,
 151                         .SubClass               = HID_CSCP_BootSubclass,
 152                         .Protocol               = HID_CSCP_KeyboardBootProtocol,
 153
 154                         .InterfaceStrIndex      = NO_DESCRIPTOR
 155                 },
 156
 157         .HID_KeyboardHID =
 158                 {
 159                         .Header                 = {.Size = sizeof(USB_HID_Descriptor_HID_t), .Type = HID_DTYPE_HID},
 160
 161                         .HIDSpec                = VERSION_BCD(1,1,1),
 162                         .CountryCode            = 0x00,
 163                         .TotalReportDescriptors = 1,
 164                         .HIDReportType          = HID_DTYPE_Report,
 165                         .HIDReportLength        = sizeof(KeyboardReport)
 166                 },
 167
 168         .HID_ReportINEndpoint =
 169                 {
 170                         .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
 171
 172                         .EndpointAddress        = KEYBOARD_EPADDR,
 173                         .Attributes             = (EP_TYPE_INTERRUPT | ENDPOINT_ATTR_NO_SYNC | ENDPOINT_USAGE_DATA),
 174                         .EndpointSize           = KEYBOARD_EPSIZE,
 175                         .PollingIntervalMS      = 0x05
 176                 },
 177 };
 178
 179 /** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
 180  *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
 181  *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
 182  */
 183 const USB_Descriptor_String_t PROGMEM LanguageString = USB_STRING_DESCRIPTOR_ARRAY(LANGUAGE_ID_ENG);
 184
 185 /** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
 186  *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
 187  *  Descriptor.
 188  */
 189 const USB_Descriptor_String_t PROGMEM ManufacturerString = USB_STRING_DESCRIPTOR(L"LUFA Library");
 190
 191 /** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
 192  *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
 193  *  Descriptor.
 194  */
 195 const USB_Descriptor_String_t PROGMEM ProductString = USB_STRING_DESCRIPTOR(L"LUFA Mass Storage and Keyboard Demo");
 196
 197 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
 198  *  documentation) by the application code so that the address and size of a requested descriptor can be given
 199  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
 200  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
 201  *  USB host.
 202  */
 203 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue,
 204                                     const uint16_t wIndex,
 205                                     const void** const DescriptorAddress)
 206 {
 207         const uint8_t  DescriptorType   = (wValue >> 8);
 208         const uint8_t  DescriptorNumber = (wValue & 0xFF);
 209
 210         const void* Address = NULL;
 211         uint16_t    Size    = NO_DESCRIPTOR;
 212
 213         switch (DescriptorType)
 214         {
 215                 case DTYPE_Device:
 216                         Address = &DeviceDescriptor;
 217                         Size    = sizeof(USB_Descriptor_Device_t);
 218                         break;
 219                 case DTYPE_Configuration:
 220                         Address = &ConfigurationDescriptor;
 221                         Size    = sizeof(USB_Descriptor_Configuration_t);
 222                         break;
 223                 case DTYPE_String:
 224                         switch (DescriptorNumber)
 225                         {
 226                                 case STRING_ID_Language:
 227                                         Address = &LanguageString;
 228                                         Size    = pgm_read_byte(&LanguageString.Header.Size);
 229                                         break;
 230                                 case STRING_ID_Manufacturer:
 231                                         Address = &ManufacturerString;
 232                                         Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 233                                         break;
 234                                 case STRING_ID_Product:
 235                                         Address = &ProductString;
 236                                         Size    = pgm_read_byte(&ProductString.Header.Size);
 237                                         break;
 238                         }
 239
 240                         break;
 241                 case HID_DTYPE_HID:
 242                         Address = &ConfigurationDescriptor.HID_KeyboardHID;
 243                         Size    = sizeof(USB_HID_Descriptor_HID_t);
 244                         break;
 245                 case HID_DTYPE_Report:
 246                         Address = &KeyboardReport;
 247                         Size    = sizeof(KeyboardReport);
 248                         break;
 249         }
 250
 251         *DescriptorAddress = Address;
 252         return Size;
 253 }
 254