LUFA/Drivers/Board/Joystick.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2012.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   7 */
   8
   9 /*
  10   Copyright 2012  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 Digital joystick board hardware driver.
  33  *
  34  *  This file is the master dispatch header file for the board-specific Joystick driver, for boards containing a
  35  *  digital joystick.
  36  *
  37  *  User code should include this file, which will in turn include the correct joystick driver header file for the
  38  *  currently selected board.
  39  *
  40  *  If the \c BOARD value is set to \c BOARD_USER, this will include the \c /Board/Joystick.h file in the user project
  41  *  directory.
  42  *
  43  *  For possible \c BOARD makefile values, see \ref Group_BoardTypes.
  44  */
  45
  46 /** \ingroup Group_BoardDrivers
  47  *  \defgroup Group_Joystick Joystick Driver - LUFA/Drivers/Board/Joystick.h
  48  *  \brief Digital joystick board hardware driver.
  49  *
  50  *  \section Sec_Dependencies Module Source Dependencies
  51  *  The following files must be built with any user project that uses this module:
  52  *    - None
  53  *
  54  *  \section Sec_ModDescription Module Description
  55  *  Hardware Joystick driver. This module provides an easy to use interface to control the hardware digital Joystick
  56  *  located on many boards.
  57  *
  58  *  If the \c BOARD value is set to \c BOARD_USER, this will include the \c /Board/Joystick.h file in the user project
  59  *  directory. Otherwise, it will include the appropriate built in board driver header file.
  60  *
  61  *  For possible \c BOARD makefile values, see \ref Group_BoardTypes.
  62  *
  63  *  \section Sec_ExampleUsage Example Usage
  64  *  The following snippet is an example of how this module may be used within a typical
  65  *  application.
  66  *
  67  *  \code
  68  *      // Initialize the board Joystick driver before first use
  69  *      Joystick_Init();
  70  *
  71  *      printf("Waiting for joystick movement...\r\n");
  72  *
  73  *      // Loop until a the joystick has been moved
  74  *      uint8_t JoystickMovement;
  75  *      while (!(JoystickMovement = Joystick_GetStatus())) {};
  76  *
  77  *      // Display which direction the joystick was moved in
  78  *      printf("Joystick moved:\r\n");
  79  *
  80  *      if (JoystickMovement & (JOY_UP | JOY_DOWN))
  81  *        printf("%s ", (JoystickMovement & JOY_UP) ? "Up" : "Down");
  82  *
  83  *      if (JoystickMovement & (JOY_LEFT | JOY_RIGHT))
  84  *        printf("%s ", (JoystickMovement & JOY_LEFT) ? "Left" : "Right");
  85  *
  86  *      if (JoystickMovement & JOY_PRESS)
  87  *        printf("Pressed");
  88  *  \endcode
  89  *
  90  *  @{
  91  */
  92
  93 #ifndef __JOYSTICK_H__
  94 #define __JOYSTICK_H__
  95
  96         /* Macros: */
  97                 #define __INCLUDE_FROM_JOYSTICK_H
  98
  99         /* Includes: */
 100                 #include "../../Common/Common.h"
 101
 102                 #if (BOARD == BOARD_NONE)
 103                         #error The Board Joystick driver cannot be used if the makefile BOARD option is not set.
 104                 #elif (BOARD == BOARD_USBKEY)
 105                         #include "AVR8/USBKEY/Joystick.h"
 106                 #elif (BOARD == BOARD_STK525)
 107                         #include "AVR8/STK525/Joystick.h"
 108                 #elif (BOARD == BOARD_STK526)
 109                         #include "AVR8/STK526/Joystick.h"
 110                 #elif (BOARD == BOARD_BUMBLEB)
 111                         #include "AVR8/BUMBLEB/Joystick.h"
 112                 #elif (BOARD == BOARD_EVK527)
 113                         #include "AVR8/EVK527/Joystick.h"
 114                 #elif (BOARD == BOARD_EVK1101)
 115                         #include "UC3/EVK1101/Joystick.h"
 116                 #elif (BOARD == BOARD_EVK1100)
 117                         #include "UC3/EVK1100/Joystick.h"
 118                 #else
 119                         #include "Board/Joystick.h"
 120                 #endif
 121
 122         /* Pseudo-Functions for Doxygen: */
 123         #if defined(__DOXYGEN__)
 124                 /** Initializes the joystick driver so that the joystick position can be read. This sets the appropriate
 125                  *  I/O pins to inputs with their pull-ups enabled.
 126                  */
 127                 static inline void Joystick_Init(void);
 128
 129                 /** Disables the joystick driver, releasing the I/O pins back to their default high-impedence input mode. */
 130                 static inline void Joystick_Disable(void);
 131
 132                 /** Returns the current status of the joystick, as a mask indicating the direction the joystick is
 133                  *  currently facing in (multiple bits can be set).
 134                  *
 135                  *  \return Mask indicating the joystick direction - see corresponding board specific Joystick.h file
 136                  *          for direction masks.
 137                  */
 138                 static inline uint_reg_t Joystick_GetStatus(void) ATTR_WARN_UNUSED_RESULT;
 139         #endif
 140
 141 #endif
 142
 143 /** @} */
 144