LUFA/Drivers/USB/LowLevel/DevChapter9.h

   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
  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 __DEVCHAPTER9_H__
  42 #define __DEVCHAPTER9_H__
  43
  44         /* Includes: */
  45                 #include <avr/io.h>
  46                 #include <avr/pgmspace.h>
  47                 #include <avr/eeprom.h>
  48                 #include <avr/boot.h>
  49                 #include <util/atomic.h>
  50
  51                 #include "../HighLevel/StdDescriptors.h"
  52                 #include "../HighLevel/Events.h"
  53                 #include "../HighLevel/StdRequestType.h"
  54                 #include "../HighLevel/USBTask.h"
  55                 #include "LowLevel.h"
  56
  57         /* Enable C linkage for C++ Compilers: */
  58                 #if defined(__cplusplus)
  59                         extern "C" {
  60                 #endif
  61
  62         /* Preprocessor Checks: */
  63                 #if !defined(__INCLUDE_FROM_USB_DRIVER)
  64                         #error Do not include this file directly. Include LUFA/Drivers/USB/USB.h instead.
  65                 #endif
  66
  67         /* Public Interface - May be used in end-application: */
  68                 /* Macros: */
  69                         #if defined(USE_SINGLE_DEVICE_CONFIGURATION)
  70                                 #define FIXED_NUM_CONFIGURATIONS           1
  71                         #endif
  72
  73                 /* Enums: */
  74                         #if !defined(USE_FLASH_DESCRIPTORS) && !defined(USE_EEPROM_DESCRIPTORS) && !defined(USE_RAM_DESCRIPTORS)
  75                                 /** Enum for the possible descriptor memory spaces, for the MemoryAddressSpace of the
  76                                  *  \ref CALLBACK_USB_GetDescriptor() function. This can be used when none of the USE_*_DESCRIPTORS
  77                                  *  compile time options are used, to indicate in which memory space the descriptor is stored.
  78                                  *
  79                                  *  \ingroup Group_Device
  80                                  */
  81                                 enum USB_DescriptorMemorySpaces_t
  82                                 {
  83                                         MEMSPACE_FLASH    = 0, /**< Indicates the requested descriptor is located in FLASH memory. */
  84                                         MEMSPACE_EEPROM   = 1, /**< Indicates the requested descriptor is located in EEPROM memory. */
  85                                         MEMSPACE_RAM      = 2, /**< Indicates the requested descriptor is located in RAM memory. */
  86                                 };
  87                         #endif
  88
  89                 /* Global Variables: */
  90                         /** Indicates the currently set configuration number of the device. USB devices may have several
  91                          *  different configurations which the host can select between; this indicates the currently selected
  92                          *  value, or 0 if no configuration has been selected.
  93                          *
  94                          *  \note This variable should be treated as read-only in the user application, and never manually
  95                          *        changed in value.
  96                          *
  97                          *  \ingroup Group_Device
  98                          */
  99                         extern uint8_t USB_ConfigurationNumber;
 100
 101                         #if !defined(NO_DEVICE_REMOTE_WAKEUP)
 102                                 /** Indicates if the host is currently allowing the device to issue remote wakeup events. If this
 103                                  *  flag is cleared, the device should not issue remote wakeup events to the host.
 104                                  *
 105                                  *  \note This variable should be treated as read-only in the user application, and never manually
 106                                  *        changed in value.
 107                                  *        \n\n
 108                                  *
 109                                  *  \note To reduce FLASH usage of the compiled applications where Remote Wakeup is not supported,
 110                                  *        this global and the underlying management code can be disabled by defining the
 111                                  *        NO_DEVICE_REMOTE_WAKEUP token in the project makefile and passing it to the compiler via
 112                                  *        the -D switch.
 113                                  *
 114                                  *  \ingroup Group_Device
 115                                  */
 116                                 extern bool USB_RemoteWakeupEnabled;
 117                         #endif
 118
 119                         #if !defined(NO_DEVICE_SELF_POWER)
 120                                 /** Indicates if the device is currently being powered by its own power supply, rather than being
 121                                  *  powered by the host's USB supply. This flag should remain cleared if the device does not
 122                                  *  support self powered mode, as indicated in the device descriptors.
 123                                  *
 124                                  *  \ingroup Group_Device
 125                                  */
 126                                 extern bool USB_CurrentlySelfPowered;
 127                         #endif
 128
 129         /* Private Interface - For use in library only: */
 130         #if !defined(__DOXYGEN__)
 131                 #if defined(USE_RAM_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS)
 132                         #error USE_RAM_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
 133                 #elif defined(USE_RAM_DESCRIPTORS) && defined(USE_FLASH_DESCRIPTORS)
 134                         #error USE_RAM_DESCRIPTORS and USE_FLASH_DESCRIPTORS are mutually exclusive.
 135                 #elif defined(USE_FLASH_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS)
 136                         #error USE_FLASH_DESCRIPTORS and USE_EEPROM_DESCRIPTORS are mutually exclusive.
 137                 #elif defined(USE_FLASH_DESCRIPTORS) && defined(USE_EEPROM_DESCRIPTORS) && defined(USE_RAM_DESCRIPTORS)
 138                         #error Only one of the USE_*_DESCRIPTORS modes should be selected.
 139                 #endif
 140
 141                 /* Function Prototypes: */
 142                         void USB_Device_ProcessControlRequest(void);
 143
 144                         #if defined(__INCLUDE_FROM_DEVCHAPTER9_C)
 145                                 static void USB_Device_SetAddress(void);
 146                                 static void USB_Device_SetConfiguration(void);
 147                                 static void USB_Device_GetConfiguration(void);
 148                                 static void USB_Device_GetDescriptor(void);
 149                                 static void USB_Device_GetStatus(void);
 150                                 static void USB_Device_ClearSetFeature(void);
 151
 152                                 #if !defined(NO_INTERNAL_SERIAL) && (USE_INTERNAL_SERIAL != NO_DESCRIPTOR)
 153                                         static char USB_Device_NibbleToASCII(uint8_t Nibble) ATTR_ALWAYS_INLINE;
 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