LUFA/Drivers/USB/HighLevel/DeviceStandardReq.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2011.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2011  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, distribute, and sell this
  13   software and its documentation for any purpose is hereby granted
  14   without fee, provided that the above copyright notice appear in
  15   all copies and that both that the copyright notice and this
  16   permission notice and warranty disclaimer appear in supporting
  17   documentation, and that the name of the author not be used in
  18   advertising or publicity pertaining to distribution of the
  19   software without specific, written prior permission.
  20
  21   The author disclaim all warranties with regard to this
  22   software, including all implied warranties of merchantability
  23   and fitness.  In no event shall the author be liable for any
  24   special, indirect or consequential damages or any damages
  25   whatsoever resulting from loss of use, data or profits, whether
  26   in an action of contract, negligence or other tortious action,
  27   arising out of or in connection with the use or performance of
  28   this software.
  29 */
  30
  31 /** \file
  32  *  \brief USB device standard request management.
  33  *
  34  *  This file contains the function prototypes necessary for the processing of incoming standard control requests
  35  *  when the library is in USB device mode.
  36  *
  37  *  \note This file should not be included directly. It is automatically included as needed by the USB driver
  38  *        dispatch header located in LUFA/Drivers/USB/USB.h.
  39  */
  40
  41 #ifndef __DEVICESTDREQ_H__
  42 #define __DEVICESTDREQ_H__
  43
  44         /* Includes: */
  45                 #include <avr/pgmspace.h>
  46                 #include <avr/eeprom.h>
  47                 #include <avr/boot.h>
  48                 #include <util/atomic.h>
  49                 #include <stdint.h>
  50                 #include <stdbool.h>
  51
  52                 #include "StdDescriptors.h"
  53                 #include "Events.h"
  54                 #include "StdRequestType.h"
  55                 #include "USBTask.h"
  56                 #include "../LowLevel/USBController.h"
  57
  58         /* Enable C linkage for C++ Compilers: */
  59                 #if defined(__cplusplus)
  60                         extern "C" {
  61                 #endif
  62
  63         /* Preprocessor Checks: */
  64                 #if !defined(__INCLUDE_FROM_USB_DRIVER)
  65                         #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
  66                 #endif
  67
  68         /* Public Interface - May be used in end-application: */
  69                 /* Macros: */
  70                         #if defined(USE_SINGLE_DEVICE_CONFIGURATION)
  71                                 #define FIXED_NUM_CONFIGURATIONS           1
  72                         #endif
  73
  74                 /* Enums: */
  75                         #if !defined(USE_FLASH_DESCRIPTORS) && !defined(USE_EEPROM_DESCRIPTORS) && !defined(USE_RAM_DESCRIPTORS)
  76                                 /** Enum for the possible descriptor memory spaces, for the MemoryAddressSpace of the
  77                                  *  \ref CALLBACK_USB_GetDescriptor() function. This can be used when none of the USE_*_DESCRIPTORS
  78                                  *  compile time options are used, to indicate in which memory space the descriptor is stored.
  79                                  *
  80                                  *  \ingroup Group_Device
  81                                  */
  82                                 enum USB_DescriptorMemorySpaces_t
  83                                 {
  84                                         MEMSPACE_FLASH    = 0, /**< Indicates the requested descriptor is located in FLASH memory. */
  85                                         MEMSPACE_EEPROM   = 1, /**< Indicates the requested descriptor is located in EEPROM memory. */
  86                                         MEMSPACE_RAM      = 2, /**< Indicates the requested descriptor is located in RAM memory. */
  87                                 };
  88                         #endif
  89
  90                 /* Global Variables: */
  91                         /** Indicates the currently set configuration number of the device. USB devices may have several
  92                          *  different configurations which the host can select between; this indicates the currently selected
  93                          *  value, or 0 if no configuration has been selected.
  94                          *
  95                          *  \note This variable should be treated as read-only in the user application, and never manually
  96                          *        changed in value.
  97                          *
  98                          *  \ingroup Group_Device
  99                          */
 100                         extern uint8_t USB_ConfigurationNumber;
 101
 102                         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 103                                 /** Indicates if the host is currently allowing the device to issue remote wakeup events. If this
 104                                  *  flag is cleared, the device should not issue remote wakeup events to the host.
 105                                  *
 106                                  *  \note This variable should be treated as read-only in the user application, and never manually
 107                                  *        changed in value.
 108                                  *        \n\n
 109                                  *
 110                                  *  \note To reduce FLASH usage of the compiled applications where Remote Wakeup is not supported,
 111                                  *        this global and the underlying management code can be disabled by defining the
 112                                  *        NO_DEVICE_REMOTE_WAKEUP token in the project makefile and passing it to the compiler via
 113                                  *        the -D switch.
 114                                  *
 115                                  *  \ingroup Group_Device
 116                                  */
 117                                 extern bool USB_RemoteWakeupEnabled;
 118                         #endif
 119
 120                         #if !defined(NO_DEVICE_SELF_POWER)
 121                                 /** Indicates if the device is currently being powered by its own power supply, rather than being
 122                                  *  powered by the host's USB supply. This flag should remain cleared if the device does not
 123                                  *  support self powered mode, as indicated in the device descriptors.
 124                                  *
 125                                  *  \ingroup Group_Device
 126                                  */
 127                                 extern bool USB_CurrentlySelfPowered;
 128                         #endif
 129
 130         /* Private Interface - For use in library only: */
 131         #if !defined(__DOXYGEN__)
 132                 #if defined(USE_RAM_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS)
 133                         #error USE_RAM_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
 134                 #elif defined(USE_RAM_DESCRIPTORS) && defined(USE_FLASH_DESCRIPTORS)
 135                         #error USE_RAM_DESCRIPTORS and USE_FLASH_DESCRIPTORS are mutually exclusive.
 136                 #elif defined(USE_FLASH_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS)
 137                         #error USE_FLASH_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
 138                 #elif defined(USE_FLASH_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS) && defined(USE_RAM_DESCRIPTORS)
 139                         #error Only one of the USE_*_DESCRIPTORS modes should be selected.
 140                 #endif
 141
 142                 /* Function Prototypes: */
 143                         void USB_Device_ProcessControlRequest(void);
 144
 145                         #if defined(__INCLUDE_FROM_DEVICESTDREQ_C)
 146                                 static void USB_Device_SetAddress(void);
 147                                 static void USB_Device_SetConfiguration(void);
 148                                 static void USB_Device_GetConfiguration(void);
 149                                 static void USB_Device_GetDescriptor(void);
 150                                 static void USB_Device_GetStatus(void);
 151                                 static void USB_Device_ClearSetFeature(void);
 152
 153                                 #if !defined(NO_INTERNAL_SERIAL) && (USE_INTERNAL_SERIAL != NO_DESCRIPTOR)
 154                                         static void USB_Device_GetInternalSerialDescriptor(void);
 155                                 #endif
 156                         #endif
 157         #endif
 158
 159         /* Disable C linkage for C++ Compilers: */
 160                 #if defined(__cplusplus)
 161                         }
 162                 #endif
 163
 164 #endif
 165