Demos/AudioOutput/AudioOutput.h

   1 /*
   2              LUFA Library
   3      Copyright (C) Dean Camera, 2009.
   4
   5   dean [at] fourwalledcubicle [dot] com
   6       www.fourwalledcubicle.com
   7 */
   8
   9 /*
  10   Copyright 2009  Dean Camera (dean [at] fourwalledcubicle [dot] com)
  11
  12   Permission to use, copy, modify, and distribute this software
  13   and its documentation for any purpose and without fee is hereby
  14   granted, provided that the above copyright notice appear in all
  15   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  *
  33  *  Header file for AudioOutput.c.
  34  */
  35
  36 #ifndef _AUDIO_OUTPUT_H_
  37 #define _AUDIO_OUTPUT_H_
  38
  39         /* Includes: */
  40                 #include <avr/io.h>
  41                 #include <avr/wdt.h>
  42                 #include <avr/power.h>
  43
  44                 #include "Descriptors.h"
  45
  46                 #include <LUFA/Version.h>                    // Library Version Information
  47                 #include <LUFA/Common/ButtLoadTag.h>         // PROGMEM tags readable by the ButtLoad project
  48                 #include <LUFA/Drivers/USB/USB.h>            // USB Functionality
  49                 #include <LUFA/Drivers/Board/LEDs.h>         // LEDs driver
  50                 #include <LUFA/Scheduler/Scheduler.h>        // Simple scheduler for task management
  51
  52         /* Macros: */
  53                 #if defined(USB_FULL_CONTROLLER) || defined(USB_MODIFIED_FULL_CONTROLLER)
  54                         #define TCCRxA          TCCR3A
  55                         #define TCCRxB          TCCR3B
  56                         #define OCRxA           OCR3A
  57                         #define OCRxB           OCR3B
  58                         #define WGMx0           WGM30
  59                         #define WGMx2           WGM32
  60                         #define COMxA1          COM3A1
  61                         #define COMxA0          COM3A0
  62                         #define COMxB1          COM3B1
  63                         #define COMxB0          COM3B0
  64                         #define CSx0            CS30
  65                 #else
  66                         /** Timer count register used for left channel PWM audio output (or mixed output in mono output mode) */
  67                         #define TCCRxA          TCCR1A
  68
  69                         /** Timer count register used for right channel PWM audio output */
  70                         #define TCCRxB          TCCR1B
  71
  72                         /** Timer compare register used for left channel PWM audio output (or mixed output in mono output mode) */
  73                         #define OCRxA           OCR1A
  74
  75                         /** Timer compare register used for right channel PWM audio output */
  76                         #define OCRxB           OCR1B
  77
  78                         /** Timer control register mask used to select PWM mode */
  79                         #define WGMx0           WGM10
  80
  81                         /** Timer control register mask used to select PWM mode */
  82                         #define WGMx2           WGM12
  83
  84                         /** Timer control register mask used to set, clear or toggle channel output pin on match */
  85                         #define COMxA1          COM1A1
  86
  87                         /** Timer control register mask used to set, clear or toggle channel output pin on match */
  88                         #define COMxA0          COM1A0
  89
  90                         /** Timer control register mask used to set, clear or toggle channel output pin on match */
  91                         #define COMxB1          COM1B1
  92
  93                         /** Timer control register mask used to set, clear or toggle channel output pin on match */
  94                         #define COMxB0          COM1B0
  95
  96                         /** Timer control register mask used to start the timer at Fcpu clock rate */
  97                         #define CSx0            CS10
  98                 #endif
  99
 100         /* Enums: */
 101                 /** Enum for the possible status codes for passing to the UpdateStatus() function. */
 102                 enum AudioOutput_StatusCodes_t
 103                 {
 104                         Status_USBNotReady    = 0, /**< USB is not ready (disconnected from a USB host) */
 105                         Status_USBEnumerating = 1, /**< USB interface is enumerating */
 106                         Status_USBReady       = 2, /**< USB interface is connected and ready */
 107                 };
 108
 109         /* Task Definitions: */
 110                 TASK(USB_Audio_Task);
 111
 112         /* Event Handlers: */
 113                 /** Indicates that this module will catch the USB_Connect event when thrown by the library. */
 114                 HANDLES_EVENT(USB_Connect);
 115
 116                 /** Indicates that this module will catch the USB_Disconnect event when thrown by the library. */
 117                 HANDLES_EVENT(USB_Disconnect);
 118
 119                 /** Indicates that this module will catch the USB_ConfigurationChanged event when thrown by the library. */
 120                 HANDLES_EVENT(USB_ConfigurationChanged);
 121
 122                 /** Indicates that this module will catch the USB_UnhandledControlPacket event when thrown by the library. */
 123                 HANDLES_EVENT(USB_UnhandledControlPacket);
 124
 125         /* Function Prototypes: */
 126                 void UpdateStatus(uint8_t CurrentStatus);
 127
 128 #endif