summaryrefslogtreecommitdiff
path: root/Demos/Device/LowLevel/AudioOutput/AudioOutput.txt
blob: 8f0c7d656cd3dfcf5f79c0a5ddbc085caa38035c (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
/** \file
 *
 *  This file contains special DoxyGen information for the generation of the main page and other special
 *  documentation pages. It is not a project source file.
 */

/** \mainpage Audio Output Device Demo
 *
 *  \section Sec_Compat Demo Compatibility:
 *
 *  The following list indicates what microcontrollers are compatible with this demo.
 *
 *  \li Series 7 USB AVRs (AT90USBxxx7)
 *  \li Series 6 USB AVRs (AT90USBxxx6)
 *  \li Series 4 USB AVRs (ATMEGAxxU4)
 *
 *  \section Sec_Info USB Information:
 *
 *  The following table gives a rundown of the USB utilization of this demo.
 *
 *  <table>
 *   <tr>
 *    <td><b>USB Mode:</b></td>
 *    <td>Device</td>
 *   </tr>
 *   <tr>
 *    <td><b>USB Class:</b></td>
 *    <td>Audio Class</td>
 *   </tr>
 *   <tr>
 *    <td><b>USB Subclass:</b></td>
 *    <td>Standard Audio Device</td>
 *   </tr>
 *   <tr>
 *    <td><b>Relevant Standards:</b></td>
 *    <td>USBIF Audio 1.0 Class Specification \n
 *        USBIF Audio 1.0 Class Terminal Types Specification \n
 *        USBIF Audio 1.0 Data Formats Specification</td>
 *   </tr>
 *   <tr>
 *    <td><b>Supported USB Speeds:</b></td>
 *    <td>Full Speed Mode</td>
 *   </tr>
 *  </table>
 *
 *  \section Sec_Description Project Description:
 *
 *  Audio demonstration application. This gives a simple reference
 *  application for implementing a USB Audio Output device using the
 *  basic USB Audio 1.0 drivers in all modern OSes (i.e. no special drivers
 *  required).
 *
 *  On start-up the system will automatically enumerate and function
 *  as a USB speaker. Outgoing audio will output in 8-bit PWM onto
 *  the timer 3 output compare channel A for AUDIO_OUT_MONO mode, on
 *  timer 3 channels A and B for AUDIO_OUT_STEREO and on PORTC as a signed
 *  mono sample for AUDIO_OUT_PORTC. Audio output will also be indicated on
 *  the board LEDs in all modes. Decouple audio outputs with a capacitor and
 *  attach to a speaker to hear the audio.
 *
 *  Under Windows, if a driver request dialogue pops up, select the option
 *  to automatically install the appropriate drivers.
 *
 *  \section Sec_Options Project Options
 *
 *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
 *
 *  <table>
 *   <tr>
 *    <th><b>Define Name:</b></th>
 *    <th><b>Location:</b></th>
 *    <th><b>Description:</b></th>
 *   </tr>
 *   <tr>
 *    <td>AUDIO_OUT_STEREO</td>
 *    <td>AppConfig.h</td>
 *    <td>When defined, this outputs the audio samples in stereo to the timer output pins of the microcontroller.</td>
 *   </tr>
 *   <tr>
 *    <td>AUDIO_OUT_MONO</td>
 *    <td>AppConfig.h</td>
 *    <td>When defined, this outputs the audio samples in mono to the timer output pin of the microcontroller.</td>
 *   </tr>
 *   <tr>
 *    <td>AUDIO_OUT_PORTC</td>
 *    <td>AppConfig.h</td>
 *    <td>When defined, this outputs the audio samples in mono to port C of the microcontroller, for connection to an
 *        external DAC.</td>
 *   </tr>
 *  </table>
 */