Demos/Device/ClassDriver/MassStorageKeyboard/Descriptors.c

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2010  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 disclaim 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 /* On some devices, there is a factory set internal serial number which can be automatically sent to the host as
  42  * the device's serial number when the Device Descriptor's .SerialNumStrIndex entry is set to USE_INTERNAL_SERIAL.
  43  * This allows the host to track a device across insertions on different ports, allowing them to retain allocated
  44  * resources like COM port numbers and drivers. On demos using this feature, give a warning on unsupported devices
  45  * so that the user can supply their own serial number descriptor instead or remove the USE_INTERNAL_SERIAL value
  46  * from the Device Descriptor (forcing the host to generate a serial number for each device from the VID, PID and
  47  * port location).
  48  */
  49 #if (USE_INTERNAL_SERIAL == NO_DESCRIPTOR)
  50         #warning USE_INTERNAL_SERIAL is not available on this AVR - please manually construct a device serial descriptor.
  51 #endif
  52
  53 /** HID class report descriptor. This is a special descriptor constructed with values from the
  54  *  USBIF HID class specification to describe the reports and capabilities of the HID device. This
  55  *  descriptor is parsed by the host and its contents used to determine what data (and in what encoding)
  56  *  the device will send, and what it may be sent back from the host. Refer to the HID specification for
  57  *  more details on HID report descriptors.
  58  */
  59 USB_Descriptor_HIDReport_Datatype_t PROGMEM KeyboardReport[] =
  60 {
  61         0x05, 0x01,          /* Usage Page (Generic Desktop)                    */
  62         0x09, 0x06,          /* Usage (Keyboard)                                */
  63         0xa1, 0x01,          /* Collection (Application)                        */
  64         0x75, 0x01,          /*   Report Size (1)                               */
  65         0x95, 0x08,          /*   Report Count (8)                              */
  66         0x05, 0x07,          /*   Usage Page (Key Codes)                        */
  67         0x19, 0xe0,          /*   Usage Minimum (Keyboard LeftControl)          */
  68         0x29, 0xe7,          /*   Usage Maximum (Keyboard Right GUI)            */
  69         0x15, 0x00,          /*   Logical Minimum (0)                           */
  70         0x25, 0x01,          /*   Logical Maximum (1)                           */
  71         0x81, 0x02,          /*   Input (Data, Variable, Absolute)              */
  72         0x95, 0x01,          /*   Report Count (1)                              */
  73         0x75, 0x08,          /*   Report Size (8)                               */
  74         0x81, 0x03,          /*   Input (Const, Variable, Absolute)             */
  75         0x95, 0x05,          /*   Report Count (5)                              */
  76         0x75, 0x01,          /*   Report Size (1)                               */
  77         0x05, 0x08,          /*   Usage Page (LEDs)                             */
  78         0x19, 0x01,          /*   Usage Minimum (Num Lock)                      */
  79         0x29, 0x05,          /*   Usage Maximum (Kana)                          */
  80         0x91, 0x02,          /*   Output (Data, Variable, Absolute)             */
  81         0x95, 0x01,          /*   Report Count (1)                              */
  82         0x75, 0x03,          /*   Report Size (3)                               */
  83         0x91, 0x03,          /*   Output (Const, Variable, Absolute)            */
  84         0x95, 0x06,          /*   Report Count (6)                              */
  85         0x75, 0x08,          /*   Report Size (8)                               */
  86         0x15, 0x00,          /*   Logical Minimum (0)                           */
  87         0x25, 0x65,          /*   Logical Maximum (101)                         */
  88         0x05, 0x07,          /*   Usage Page (Keyboard)                         */
  89         0x19, 0x00,          /*   Usage Minimum (Reserved (no event indicated)) */
  90         0x29, 0x65,          /*   Usage Maximum (Keyboard Application)          */
  91         0x81, 0x00,          /*   Input (Data, Array, Absolute)                 */
  92         0xc0                 /* End Collection                                  */
  93 };
  94
  95 /** Device descriptor structure. This descriptor, located in FLASH memory, describes the overall
  96  *  device characteristics, including the supported USB version, control endpoint size and the
  97  *  number of device configurations. The descriptor is read out by the USB host when the enumeration
  98  *  process begins.
  99  */
 100 USB_Descriptor_Device_t PROGMEM DeviceDescriptor =
 101 {
 102         .Header                 = {.Size = sizeof(USB_Descriptor_Device_t), .Type = DTYPE_Device},
 103
 104         .USBSpecification       = VERSION_BCD(01.10),
 105         .Class                  = 0x00,
 106         .SubClass               = 0x00,
 107         .Protocol               = 0x00,
 108
 109         .Endpoint0Size          = FIXED_CONTROL_ENDPOINT_SIZE,
 110
 111         .VendorID               = 0x03EB,
 112         .ProductID              = 0x2061,
 113         .ReleaseNumber          = 0x0000,
 114
 115         .ManufacturerStrIndex   = 0x01,
 116         .ProductStrIndex        = 0x02,
 117         .SerialNumStrIndex      = USE_INTERNAL_SERIAL,
 118
 119         .NumberOfConfigurations = FIXED_NUM_CONFIGURATIONS
 120 };
 121
 122 /** Configuration descriptor structure. This descriptor, located in FLASH memory, describes the usage
 123  *  of the device in one of its supported configurations, including information about any device interfaces
 124  *  and endpoints. The descriptor is read out by the USB host during the enumeration process when selecting
 125  *  a configuration so that the host may correctly communicate with the USB device.
 126  */
 127 USB_Descriptor_Configuration_t PROGMEM ConfigurationDescriptor =
 128 {
 129         .Config =
 130                 {
 131                         .Header                 = {.Size = sizeof(USB_Descriptor_Configuration_Header_t), .Type = DTYPE_Configuration},
 132
 133                         .TotalConfigurationSize = sizeof(USB_Descriptor_Configuration_t),
 134                         .TotalInterfaces        = 2,
 135
 136                         .ConfigurationNumber    = 1,
 137                         .ConfigurationStrIndex  = NO_DESCRIPTOR,
 138
 139                         .ConfigAttributes       = USB_CONFIG_ATTR_BUSPOWERED,
 140
 141                         .MaxPowerConsumption    = USB_CONFIG_POWER_MA(100)
 142                 },
 143
 144         .MS_Interface =
 145                 {
 146                         .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 147
 148                         .InterfaceNumber        = 0,
 149                         .AlternateSetting       = 0,
 150
 151                         .TotalEndpoints         = 2,
 152
 153                         .Class                  = 0x08,
 154                         .SubClass               = 0x06,
 155                         .Protocol               = 0x50,
 156
 157                         .InterfaceStrIndex      = NO_DESCRIPTOR
 158                 },
 159
 160         .MS_DataInEndpoint =
 161                 {
 162                         .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
 163
 164                         .EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_IN | MASS_STORAGE_IN_EPNUM),
 165                         .Attributes             = EP_TYPE_BULK,
 166                         .EndpointSize           = MASS_STORAGE_IO_EPSIZE,
 167                         .PollingIntervalMS      = 0x00
 168                 },
 169
 170         .MS_DataOutEndpoint =
 171                 {
 172                         .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
 173
 174                         .EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_OUT | MASS_STORAGE_OUT_EPNUM),
 175                         .Attributes             = EP_TYPE_BULK,
 176                         .EndpointSize           = MASS_STORAGE_IO_EPSIZE,
 177                         .PollingIntervalMS      = 0x00
 178                 },
 179
 180         .HID_KeyboardInterface =
 181                 {
 182                         .Header                 = {.Size = sizeof(USB_Descriptor_Interface_t), .Type = DTYPE_Interface},
 183
 184                         .InterfaceNumber        = 1,
 185                         .AlternateSetting       = 0,
 186
 187                         .TotalEndpoints         = 1,
 188
 189                         .Class                  = 0x03,
 190                         .SubClass               = 0x01,
 191                         .Protocol               = 0x01,
 192
 193                         .InterfaceStrIndex      = NO_DESCRIPTOR
 194                 },
 195
 196         .HID_KeyboardHID =
 197                 {
 198                         .Header                 = {.Size = sizeof(USB_HID_Descriptor_t), .Type = DTYPE_HID},
 199
 200                         .HIDSpec                = VERSION_BCD(01.11),
 201                         .CountryCode            = 0x00,
 202                         .TotalReportDescriptors = 1,
 203                         .HIDReportType          = DTYPE_Report,
 204                         .HIDReportLength        = sizeof(KeyboardReport)
 205                 },
 206
 207         .HID_ReportINEndpoint =
 208                 {
 209                         .Header                 = {.Size = sizeof(USB_Descriptor_Endpoint_t), .Type = DTYPE_Endpoint},
 210
 211                         .EndpointAddress        = (ENDPOINT_DESCRIPTOR_DIR_IN | KEYBOARD_EPNUM),
 212                         .Attributes             = EP_TYPE_INTERRUPT,
 213                         .EndpointSize           = KEYBOARD_EPSIZE,
 214                         .PollingIntervalMS      = 0x04
 215                 },
 216 };
 217
 218 /** Language descriptor structure. This descriptor, located in FLASH memory, is returned when the host requests
 219  *  the string descriptor with index 0 (the first index). It is actually an array of 16-bit integers, which indicate
 220  *  via the language ID table available at USB.org what languages the device supports for its string descriptors.
 221  */
 222 USB_Descriptor_String_t PROGMEM LanguageString =
 223 {
 224         .Header                 = {.Size = USB_STRING_LEN(1), .Type = DTYPE_String},
 225
 226         .UnicodeString          = {LANGUAGE_ID_ENG}
 227 };
 228
 229 /** Manufacturer descriptor string. This is a Unicode string containing the manufacturer's details in human readable
 230  *  form, and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
 231  *  Descriptor.
 232  */
 233 USB_Descriptor_String_t PROGMEM ManufacturerString =
 234 {
 235         .Header                 = {.Size = USB_STRING_LEN(11), .Type = DTYPE_String},
 236
 237         .UnicodeString          = L"Dean Camera"
 238 };
 239
 240 /** Product descriptor string. This is a Unicode string containing the product's details in human readable form,
 241  *  and is read out upon request by the host when the appropriate string ID is requested, listed in the Device
 242  *  Descriptor.
 243  */
 244 USB_Descriptor_String_t PROGMEM ProductString =
 245 {
 246         .Header                 = {.Size = USB_STRING_LEN(35), .Type = DTYPE_String},
 247
 248         .UnicodeString          = L"LUFA Mass Storage and Keyboard Demo"
 249 };
 250
 251 /** This function is called by the library when in device mode, and must be overridden (see library "USB Descriptors"
 252  *  documentation) by the application code so that the address and size of a requested descriptor can be given
 253  *  to the USB library. When the device receives a Get Descriptor request on the control endpoint, this function
 254  *  is called so that the descriptor details can be passed back and the appropriate descriptor sent back to the
 255  *  USB host.
 256  */
 257 uint16_t CALLBACK_USB_GetDescriptor(const uint16_t wValue, const uint8_t wIndex, void** const DescriptorAddress)
 258 {
 259         const uint8_t  DescriptorType   = (wValue >> 8);
 260         const uint8_t  DescriptorNumber = (wValue & 0xFF);
 261
 262         void*    Address = NULL;
 263         uint16_t Size    = NO_DESCRIPTOR;
 264
 265         switch (DescriptorType)
 266         {
 267                 case DTYPE_Device:
 268                         Address = (void*)&DeviceDescriptor;
 269                         Size    = sizeof(USB_Descriptor_Device_t);
 270                         break;
 271                 case DTYPE_Configuration:
 272                         Address = (void*)&ConfigurationDescriptor;
 273                         Size    = sizeof(USB_Descriptor_Configuration_t);
 274                         break;
 275                 case DTYPE_String:
 276                         switch (DescriptorNumber)
 277                         {
 278                                 case 0x00:
 279                                         Address = (void*)&LanguageString;
 280                                         Size    = pgm_read_byte(&LanguageString.Header.Size);
 281                                         break;
 282                                 case 0x01:
 283                                         Address = (void*)&ManufacturerString;
 284                                         Size    = pgm_read_byte(&ManufacturerString.Header.Size);
 285                                         break;
 286                                 case 0x02:
 287                                         Address = (void*)&ProductString;
 288                                         Size    = pgm_read_byte(&ProductString.Header.Size);
 289                                         break;
 290                         }
 291
 292                         break;
 293                 case DTYPE_HID:
 294                         Address = (void*)&ConfigurationDescriptor.HID_KeyboardHID;
 295                         Size    = sizeof(USB_HID_Descriptor_t);
 296                         break;
 297                 case DTYPE_Report:
 298                         Address = (void*)&KeyboardReport;
 299                         Size    = sizeof(KeyboardReport);
 300                         break;
 301         }
 302
 303         *DescriptorAddress = Address;
 304         return Size;
 305 }