LUFA/Drivers/Board/USBKEY/Joystick.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2010.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6            www.lufa-lib.org
   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 Board specific joystick driver header for the Atmel USBKEY.
  33  *
  34  *  Board specific joystick driver header for the Atmel USBKEY.
  35  *
  36  *  \note This file should not be included directly. It is automatically included as needed by the joystick driver
  37  *        dispatch header located in LUFA/Drivers/Board/Joystick.h.
  38  */
  39
  40 /** \ingroup Group_Joystick
  41  *  @defgroup Group_Joystick_USBKEY USBKEY
  42  *
  43  *  Board specific joystick driver header for the Atmel USBKEY.
  44  *
  45  *  \note This file should not be included directly. It is automatically included as needed by the joystick driver
  46  *        dispatch header located in LUFA/Drivers/Board/Joystick.h.
  47  *
  48  *  @{
  49  */
  50
  51 #ifndef __JOYSTICK_USBKEY_H__
  52 #define __JOYSTICK_USBKEY_H__
  53
  54         /* Includes: */
  55                 #include <avr/io.h>
  56
  57                 #include "../../../Common/Common.h"
  58
  59         /* Enable C linkage for C++ Compilers: */
  60                 #if defined(__cplusplus)
  61                         extern "C" {
  62                 #endif
  63
  64         /* Preprocessor Checks: */
  65                 #if !defined(__INCLUDE_FROM_JOYSTICK_H)
  66                         #error Do not include this file directly. Include LUFA/Drivers/Board/Joystick.h instead.
  67                 #endif
  68
  69         /* Private Interface - For use in library only: */
  70         #if !defined(__DOXYGEN__)
  71                 /* Macros: */
  72                         #define JOY_BMASK                 ((1 << 5) | (1 << 6) | (1 << 7))
  73                         #define JOY_EMASK                 ((1 << 4) | (1 << 5))
  74         #endif
  75
  76         /* Public Interface - May be used in end-application: */
  77                 /* Macros: */
  78                         /** Mask for the joystick being pushed in the left direction. */
  79                         #define JOY_LEFT                  (1 << 6)
  80
  81                         /** Mask for the joystick being pushed in the right direction. */
  82                         #define JOY_RIGHT                ((1 << 4) >> 1)
  83
  84                         /** Mask for the joystick being pushed in the upward direction. */
  85                         #define JOY_UP                    (1 << 7)
  86
  87                         /** Mask for the joystick being pushed in the downward direction. */
  88                         #define JOY_DOWN                 ((1 << 5) >> 1)
  89
  90                         /** Mask for the joystick being pushed inward. */
  91                         #define JOY_PRESS                 (1 << 5)
  92
  93                 /* Inline Functions: */
  94                 #if !defined(__DOXYGEN__)
  95                         static inline void Joystick_Init(void)
  96                         {
  97                                 DDRB  &= ~(JOY_BMASK);
  98                                 DDRE  &= ~(JOY_EMASK);
  99
 100                                 PORTB |= JOY_BMASK;
 101                                 PORTE |= JOY_EMASK;
 102                         }
 103
 104                         static inline uint8_t Joystick_GetStatus(void) ATTR_WARN_UNUSED_RESULT;
 105                         static inline uint8_t Joystick_GetStatus(void)
 106                         {
 107                                 return (((uint8_t)~PINB & JOY_BMASK) | (((uint8_t)~PINE & JOY_EMASK) >> 1));
 108                         }
 109                 #endif
 110
 111         /* Disable C linkage for C++ Compilers: */
 112                 #if defined(__cplusplus)
 113                         }
 114                 #endif
 115
 116 #endif
 117
 118 /** @} */
 119