Demos/Device/ClassDriver/AudioInput/AudioInput.txt

   1 /** \file
   2  *
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   6
   7 /** \mainpage Audio Input Device Demo
   8  *
   9  *  \section SSec_Compat Demo Compatibility:
  10  *
  11  *  The following list indicates what microcontrollers are compatible with this demo.
  12  *
  13  *  - Series 7 USB AVRs
  14  *  - Series 6 USB AVRs
  15  *  - Series 4 USB AVRs
  16  *
  17  *  \section SSec_Info USB Information:
  18  *
  19  *  The following table gives a rundown of the USB utilization of this demo.
  20  *
  21  *  <table>
  22  *   <tr>
  23  *    <td><b>USB Mode:</b></td>
  24  *    <td>Device</td>
  25  *   </tr>
  26  *   <tr>
  27  *    <td><b>USB Class:</b></td>
  28  *    <td>Audio Class</td>
  29  *   </tr>
  30  *   <tr>
  31  *    <td><b>USB Subclass:</b></td>
  32  *    <td>Standard Audio Device</td>
  33  *   </tr>
  34  *   <tr>
  35  *    <td><b>Relevant Standards:</b></td>
  36  *    <td>USBIF Audio Class Specification \n
  37  *        USBIF Audio Class Terminal Types Specification \n
  38  *        USBIF Audio Data Formats Specification</td>
  39  *   </tr>
  40  *   <tr>
  41  *    <td><b>Usable Speeds:</b></td>
  42  *    <td>Full Speed Mode</td>
  43  *   </tr>
  44  *  </table>
  45  *
  46  *  \section SSec_Description Project Description:
  47  *
  48  *  Audio demonstration application. This gives a simple reference
  49  *  application for implementing a USB Audio Input device using the
  50  *  basic USB Audio drivers in all modern OSes (i.e. no special drivers
  51  *  required).
  52  *
  53  *  On start-up the system will automatically enumerate and function
  54  *  as a USB microphone. Incoming audio from the ADC channel 1 will
  55  *  be sampled and sent to the host computer.
  56  *
  57  *  To use, connect a microphone to the ADC channel 1.
  58  *
  59  *  Under Windows, if a driver request dialogue pops up, select the option
  60  *  to automatically install the appropriate drivers.
  61  *
  62  *  \section SSec_Options Project Options
  63  *
  64  *  The following defines can be found in this demo, which can control the demo behaviour when defined, or changed in value.
  65  *
  66  *  <table>
  67  *   <tr>
  68  *    <td><b>Define Name:</b></td>
  69  *    <td><b>Location:</b></td>
  70  *    <td><b>Description:</b></td>
  71  *   </tr>
  72  *   <tr>
  73  *    <td>MICROPHONE_BIASED_TO_HALF_RAIL</td>
  74  *    <td>Makefile CDEFS</td>
  75  *    <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</td>
  76  *   </tr>
  77  *   <tr>
  78  *    <td>AUDIO_SAMPLE_FREQUENCY</td>
  79  *    <td>Descriptors.h</td>
  80  *    <td>Gives the audio sample rate per channel for the audio stream, in Hz.</td>
  81  *   </tr>
  82  *  </table>
  83  */