blob: 3af62bc5c3d5c2f13891a1abdbe1dd36017dce3a (
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
|
/** \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 Host Demo
*
* \section Sec_Compat Demo Compatibility:
*
* The following list indicates what microcontrollers are compatible with this demo.
*
* \li Series 7 USB AVRs (AT90USBxxx7)
*
* \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>Host</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 Output host demonstration application. This gives a simple reference
* application for implementing a USB Audio host, for USB Audio devices using
* the USB Audio 1.0 class profile.
*
* By default, the demo will produce a square wave test tone when the board
* button is pressed. If USE_TEST_TONE is not defined in the project makefile,
* incoming audio from the ADC channel 1 will be sampled and sent to the attached
* USB audio device instead.
*
* \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>
* <td><b>Define Name:</b></td>
* <td><b>Location:</b></td>
* <td><b>Description:</b></td>
* </tr>
* <tr>
* <td>MIC_IN_ADC_CHANNEL</td>
* <td>AppConfig.h</td>
* <td>Sets the ADC channel used by the demo for the input audio samples from an attached microphone.</td>
* </tr>
* <tr>
* <td>USE_TEST_TONE</td>
* <td>AppConfig.h</td>
* <td>When defined, this alters the demo to produce a square wave test tone when the first board button is pressed
* instead of sampling the board microphone.</td>
* </tr>
* <tr>
* <td>MICROPHONE_BIASED_TO_HALF_RAIL</td>
* <td>AppConfig.h</td>
* <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</td>
* </tr>
* </table>
*/
|
