Demos/Device/LowLevel/AudioInput/AudioInput.txt

   1 /** \file
   2  *
   3  *  This file contains special DoxyGen information for the generation of the main page and other special
   4  *  documentation pages. It is not a project source file.
   5  */
   6
   7 /** \mainpage Audio Input Device Demo
   8  *
   9  *  \section SSec_Compat Demo Compatibility:
  10  *
  11  *  The following table indicates what microcontrollers are compatible with this demo.
  12  *
  13  *  - AT90USB1287
  14  *  - AT90USB1286
  15  *  - AT90USB647
  16  *  - AT90USB646
  17  *
  18  *  \section SSec_Info USB Information:
  19  *
  20  *  The following table gives a rundown of the USB utilization of this demo.
  21  *
  22  *  <table>
  23  *   <tr>
  24  *    <td><b>USB Mode:</b></td>
  25  *    <td>Device</td>
  26  *   </tr>
  27  *   <tr>
  28  *    <td><b>USB Class:</b></td>
  29  *    <td>Audio Class</td>
  30  *   </tr>
  31  *   <tr>
  32  *    <td><b>USB Subclass:</b></td>
  33  *    <td>Standard Audio Device</td>
  34  *   </tr>
  35  *   <tr>
  36  *    <td><b>Relevant Standards:</b></td>
  37  *    <td>USBIF Audio Class Specification</td>
  38  *    <td>USBIF Audio Class Terminal Types Specification</td>
  39  *    <td>USBIF Audio Data Formats Specification</td>
  40  *   </tr>
  41  *   <tr>
  42  *    <td><b>Usable Speeds:</b></td>
  43  *    <td>Full Speed Mode</td>
  44  *   </tr>
  45  *  </table>
  46  *
  47  *  \section SSec_Description Project Description:
  48  *
  49  *  Audio demonstration application. This gives a simple reference
  50  *  application for implementing a USB Audio Input device using the
  51  *  basic USB Audio drivers in all modern OSes (i.e. no special drivers
  52  *  required).
  53  *
  54  *  On start-up the system will automatically enumerate and function
  55  *  as a USB microphone. Incoming audio from the ADC channel 1 will
  56  *  be sampled and sent to the host computer.
  57  *
  58  *  To use, connect a microphone to the ADC channel 2.
  59  *
  60  *  Under Windows, if a driver request dialogue pops up, select the option
  61  *  to automatically install the appropriate drivers.
  62  *
  63  *  \section SSec_Options Project Options
  64  *
  65  *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
  66  *
  67  *  <table>
  68  *   <tr>
  69  *    <td><b>Define Name:</b></td>
  70  *    <td><b>Location:</b></td>
  71  *    <td><b>Description:</b></td>
  72  *   </tr>
  73  *   <tr>
  74  *    <td>MICROPHONE_BIASED_TO_HALF_RAIL</td>
  75  *    <td>Makefile CDEFS</td>
  76  *    <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</td>
  77  *   </tr>
  78  *   <tr>
  79  *    <td>AUDIO_SAMPLE_FREQUENCY</td>
  80  *    <td>Descriptors.h</td>
  81  *    <td>Gives the audio sample rate per channel for the audio stream, in Hz.</td>
  82  *   </tr>
  83  *  </table>
  84  */