/** \mainpage Audio Input Device Demo
*
- * \section SSec_Compat Demo Compatibility:
+ * \section Sec_Compat Demo Compatibility:
*
* The following list indicates what microcontrollers are compatible with this demo.
*
* - Series 6 USB AVRs (AT90USBxxx6)
* - Series 4 USB AVRs (ATMEGAxxU4)
*
- * \section SSec_Info USB Information:
+ * \section Sec_Info USB Information:
*
* The following table gives a rundown of the USB utilization of this demo.
*
* </tr>
* </table>
*
- * \section SSec_Description Project Description:
+ * \section Sec_Description Project Description:
*
* Audio demonstration application. This gives a simple reference
* application for implementing a USB Audio Input 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 microphone. Incoming audio from the ADC channel 1 will
- * be sampled and sent to the host computer.
+ * On start-up the system will automatically enumerate and function as a
+ * USB microphone. 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 host computer instead.
*
- * To use, connect a microphone to the ADC channel 1.
+ * When in microphone mode, 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
+ * \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.
*
* <td><b>Description:</b></td>
* </tr>
* <tr>
- * <td>MICROPHONE_BIASED_TO_HALF_RAIL</td>
+ * <td>USE_TEST_TONE</td>
* <td>Makefile LUFA_OPTS</td>
- * <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</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>AUDIO_SAMPLE_FREQUENCY</td>
- * <td>Descriptors.h</td>
- * <td>Gives the audio sample rate per channel for the audio stream, in Hz.</td>
+ * <td>MICROPHONE_BIASED_TO_HALF_RAIL</td>
+ * <td>Makefile LUFA_OPTS</td>
+ * <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</td>
* </tr>
* </table>
*/