|
|
|
|
/** \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 Input Device Demo
|
|
|
|
|
*
|
|
|
|
|
* \section SSec_Compat Demo Compatibility:
|
|
|
|
|
*
|
|
|
|
|
* The following table indicates what microcontrollers are compatible with this demo.
|
|
|
|
|
*
|
|
|
|
|
* - AT90USB1287
|
|
|
|
|
* - AT90USB1286
|
|
|
|
|
* - AT90USB647
|
|
|
|
|
* - AT90USB646
|
|
|
|
|
*
|
|
|
|
|
* \section SSec_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 Class Specification</td>
|
|
|
|
|
* <td>USBIF Audio Class Terminal Types Specification</td>
|
|
|
|
|
* <td>USBIF Audio Data Formats Specification</td>
|
|
|
|
|
* </tr>
|
|
|
|
|
* <tr>
|
|
|
|
|
* <td><b>Usable Speeds:</b></td>
|
|
|
|
|
* <td>Full Speed Mode</td>
|
|
|
|
|
* </tr>
|
|
|
|
|
* </table>
|
|
|
|
|
*
|
|
|
|
|
* \section SSec_Description Project Description:
|
|
|
|
|
*
|
|
|
|
|
* Audio demonstration application. This gives a simple reference
|
|
|
|
|
* application for implementing a USB Audio Input device using the
|
|
|
|
|
* basic USB Audio drivers in all modern OSes (i.e. no special drivers
|
|
|
|
|
* required).
|
|
|
|
|
*
|
|
|
|
|
* On start-up the system will automatically enumerate and function
|
|
|
|
|
* as a USB microphone. Incoming audio from the ADC channel 1 will
|
|
|
|
|
* be sampled and sent to the host computer.
|
|
|
|
|
*
|
|
|
|
|
* To use, connect a microphone to the ADC channel 2.
|
|
|
|
|
*
|
|
|
|
|
* Under Windows, if a driver request dialogue pops up, select the option
|
|
|
|
|
* to automatically install the appropriate drivers.
|
|
|
|
|
*
|
|
|
|
|
* \section SSec_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>MICROPHONE_BIASED_TO_HALF_RAIL</td>
|
|
|
|
|
* <td>Makefile CDEFS</td>
|
|
|
|
|
* <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</td>
|
|
|
|
|
* </tr>
|
|
|
|
|
* <tr>
|
|
|
|
|
* <td>AUDIO_SAMPLE_FREQUENCY</td>
|
|
|
|
|
* <td>Descriptors.h</td>
|
|
|
|
|
* <td>Gives the audio sample rate per channel for the audio stream, in Hz.</td>
|
|
|
|
|
* </tr>
|
|
|
|
|
* </table>
|
|
|
|
|
*/
|
