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Added default test tone generation mode to the Device mode AudioInput demos.

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This commit is contained in:
Dean Camera 2010-10-20 07:39:11 +00:00
parent 06f222b3ed
commit bd337aced3
10 changed files with 75 additions and 23 deletions
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16
Demos/Device/ClassDriver/AudioInput/AudioInput.txt
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@ -50,11 +50,13 @@
* 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.
@ -70,6 +72,12 @@
* <td><b>Description:</b></td>
* </tr>
* <tr>
* <td>USE_TEST_TONE</td>
* <td>Makefile LUFA_OPTS</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>Makefile LUFA_OPTS</td>
* <td>When defined, this alters the demo so that the half VCC bias of the microphone input is subtracted.</td>