Add missing AS4 and project description files to the new Audio Host demos.

Correct errors in the existing Audio demo description files due to the new demo features (variable sampling rate vs. a fixed sampling rate).

13 files changed, 304 insertions, 20 deletions

diff --git a/Demos/Device/ClassDriver/AudioInput/AudioInput.txt b/Demos/Device/ClassDriver/AudioInput/AudioInput.txt
index fd94748d6..dd3f6e682 100644
--- a/Demos/Device/ClassDriver/AudioInput/AudioInput.txt
+++ b/Demos/Device/ClassDriver/AudioInput/AudioInput.txt
@@ -82,11 +82,6 @@
  *    <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>
- *   <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>
  */
 
diff --git a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.txt b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.txt
index 9e496ebb6..090f8bed9 100644
--- a/Demos/Device/ClassDriver/AudioOutput/AudioOutput.txt
+++ b/Demos/Device/ClassDriver/AudioOutput/AudioOutput.txt
@@ -87,11 +87,6 @@
  *    <td>When defined, this outputs the audio samples in mono to port C of the microcontroller, for connection to an
  *        external DAC.</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>
  */
 
diff --git a/Demos/Device/LowLevel/AudioInput/AudioInput.txt b/Demos/Device/LowLevel/AudioInput/AudioInput.txt
index fd94748d6..dd3f6e682 100644
--- a/Demos/Device/LowLevel/AudioInput/AudioInput.txt
+++ b/Demos/Device/LowLevel/AudioInput/AudioInput.txt
@@ -82,11 +82,6 @@
  *    <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>
- *   <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>
  */
 
diff --git a/Demos/Device/LowLevel/AudioOutput/AudioOutput.txt b/Demos/Device/LowLevel/AudioOutput/AudioOutput.txt
index 9e496ebb6..090f8bed9 100644
--- a/Demos/Device/LowLevel/AudioOutput/AudioOutput.txt
+++ b/Demos/Device/LowLevel/AudioOutput/AudioOutput.txt
@@ -87,11 +87,6 @@
  *    <td>When defined, this outputs the audio samples in mono to port C of the microcontroller, for connection to an
  *        external DAC.</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>
  */
 
diff --git a/Demos/Host/ClassDriver/AudioInputHost/AudioInputHost.aps b/Demos/Host/ClassDriver/AudioInputHost/AudioInputHost.aps
new file mode 100644
index 000000000..eff46d3fa
--- /dev/null
+++ b/Demos/Host/ClassDriver/AudioInputHost/AudioInputHost.aps
@@ -0,0 +1 @@
+<AVRStudio><MANAGEMENT><ProjectName>AudioInputHost</ProjectName><Created>09-Jun-2011 14:10:10</Created><LastEdit>09-Jun-2011 14:10:10</LastEdit><ICON>241</ICON><ProjectType>0</ProjectType><Created>09-Jun-2011 14:10:10</Created><Version>4</Version><Build>4, 18, 0, 685</Build><ProjectTypeName>AVR GCC</ProjectTypeName></MANAGEMENT><CODE_CREATION><ObjectFile></ObjectFile><EntryFile></EntryFile><SaveFolder>C:\Users\Dean\Documents\Electronics\Projects\WORK\LUFAWORK\Demos\Host\ClassDriver\AudioInputHost\</SaveFolder></CODE_CREATION><DEBUG_TARGET><CURRENT_TARGET>AVR ONE!</CURRENT_TARGET><CURRENT_PART></CURRENT_PART><BREAKPOINTS></BREAKPOINTS><IO_EXPAND><HIDE>false</HIDE></IO_EXPAND><REGISTERNAMES><Register>R00</Register><Register>R01</Register><Register>R02</Register><Register>R03</Register><Register>R04</Register><Register>R05</Register><Register>R06</Register><Register>R07</Register><Register>R08</Register><Register>R09</Register><Register>R10</Register><Register>R11</Register><Register>R12</Register><Register>R13</Register><Register>R14</Register><Register>R15</Register><Register>R16</Register><Register>R17</Register><Register>R18</Register><Register>R19</Register><Register>R20</Register><Register>R21</Register><Register>R22</Register><Register>R23</Register><Register>R24</Register><Register>R25</Register><Register>R26</Register><Register>R27</Register><Register>R28</Register><Register>R29</Register><Register>R30</Register><Register>R31</Register></REGISTERNAMES><COM>Auto</COM><COMType>0</COMType><WATCHNUM>0</WATCHNUM><WATCHNAMES><Pane0></Pane0><Pane1></Pane1><Pane2></Pane2><Pane3></Pane3></WATCHNAMES><BreakOnTrcaeFull>0</BreakOnTrcaeFull></DEBUG_TARGET><Debugger><Triggers></Triggers></Debugger><AVRGCCPLUGIN><FILES><SOURCEFILE>AudioInputHost.c</SOURCEFILE><HEADERFILE>AudioInputHost.h</HEADERFILE><OTHERFILE>makefile</OTHERFILE></FILES><CONFIGS><CONFIG><NAME>default</NAME><USESEXTERNALMAKEFILE>YES</USESEXTERNALMAKEFILE><EXTERNALMAKEFILE>makefile</EXTERNALMAKEFILE><PART>atmega128</PART><HEX>1</HEX><LIST>1</LIST><MAP>1</MAP><OUTPUTFILENAME>AudioInputHost.elf</OUTPUTFILENAME><OUTPUTDIR>default\</OUTPUTDIR><ISDIRTY>1</ISDIRTY><OPTIONS/><INCDIRS/><LIBDIRS/><LIBS/><LINKOBJECTS/><OPTIONSFORALL>-Wall -gdwarf-2 -std=gnu99 -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums</OPTIONSFORALL><LINKEROPTIONS></LINKEROPTIONS><SEGMENTS/></CONFIG></CONFIGS><LASTCONFIG>default</LASTCONFIG><USES_WINAVR>1</USES_WINAVR><GCC_LOC>C:\WinAVR-20100110\bin\avr-gcc.exe</GCC_LOC><MAKE_LOC>C:\WinAVR-20100110\utils\bin\make.exe</MAKE_LOC></AVRGCCPLUGIN><IOView><usergroups/><sort sorted="0" column="0" ordername="0" orderaddress="0" ordergroup="0"/></IOView><Files></Files><Events><Bookmarks></Bookmarks></Events><Trace><Filters></Filters></Trace></AVRStudio>

diff --git a/Demos/Host/ClassDriver/AudioInputHost/AudioInputHost.txt b/Demos/Host/ClassDriver/AudioInputHost/AudioInputHost.txt
new file mode 100644
index 000000000..329448af0
--- /dev/null
+++ b/Demos/Host/ClassDriver/AudioInputHost/AudioInputHost.txt
@@ -0,0 +1,66 @@
+/** \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 Host Demo

+ *

+ *  \section Sec_Compat Demo Compatibility:

+ *

+ *  The following list indicates what microcontrollers are compatible with this demo.

+ *

+ *  - Series 7 USB AVRs (AT90USBxxx7)

+ *

+ *  \section Sec_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>Host</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 1.0 Class Specification \n

+ *        USBIF Audio 1.0 Class Terminal Types Specification \n

+ *        USBIF Audio 1.0 Data Formats Specification</td>

+ *   </tr>

+ *   <tr>

+ *    <td><b>Usable Speeds:</b></td>

+ *    <td>Full Speed Mode</td>

+ *   </tr>

+ *  </table>

+ *

+ *  \section Sec_Description Project Description:

+ *

+ *  Audio Input host demonstration application. This gives a simple reference

+ *  application for implementing a USB Audio host, for USB Audio devices using

+ *  the USB Audio 1.0 class profile.

+ *

+ *  Incoming audio will output in 8-bit PWM onto the timer 3 output compare

+ *  channel A, and will also be indicated on the board LEDs. Decouple the PWM

+ *  output with a capacitor and attach to a speaker to hear the audio.

+ *

+ *  \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.

+ *

+ *  <table>

+ *   <tr>

+ *    <td>

+ *     None

+ *    </td>

+ *   </tr>

+ *  </table>

+ */

+

diff --git a/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.aps b/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.aps
new file mode 100644
index 000000000..03478506f
--- /dev/null
+++ b/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.aps
@@ -0,0 +1 @@
+<AVRStudio><MANAGEMENT><ProjectName>AudioOutputHost</ProjectName><Created>09-Jun-2011 14:10:10</Created><LastEdit>09-Jun-2011 14:10:10</LastEdit><ICON>241</ICON><ProjectType>0</ProjectType><Created>09-Jun-2011 14:10:10</Created><Version>4</Version><Build>4, 18, 0, 685</Build><ProjectTypeName>AVR GCC</ProjectTypeName></MANAGEMENT><CODE_CREATION><ObjectFile></ObjectFile><EntryFile></EntryFile><SaveFolder>C:\Users\Dean\Documents\Electronics\Projects\WORK\LUFAWORK\Demos\Host\ClassDriver\AudioOutputHost\</SaveFolder></CODE_CREATION><DEBUG_TARGET><CURRENT_TARGET>AVR ONE!</CURRENT_TARGET><CURRENT_PART></CURRENT_PART><BREAKPOINTS></BREAKPOINTS><IO_EXPAND><HIDE>false</HIDE></IO_EXPAND><REGISTERNAMES><Register>R00</Register><Register>R01</Register><Register>R02</Register><Register>R03</Register><Register>R04</Register><Register>R05</Register><Register>R06</Register><Register>R07</Register><Register>R08</Register><Register>R09</Register><Register>R10</Register><Register>R11</Register><Register>R12</Register><Register>R13</Register><Register>R14</Register><Register>R15</Register><Register>R16</Register><Register>R17</Register><Register>R18</Register><Register>R19</Register><Register>R20</Register><Register>R21</Register><Register>R22</Register><Register>R23</Register><Register>R24</Register><Register>R25</Register><Register>R26</Register><Register>R27</Register><Register>R28</Register><Register>R29</Register><Register>R30</Register><Register>R31</Register></REGISTERNAMES><COM>Auto</COM><COMType>0</COMType><WATCHNUM>0</WATCHNUM><WATCHNAMES><Pane0></Pane0><Pane1></Pane1><Pane2></Pane2><Pane3></Pane3></WATCHNAMES><BreakOnTrcaeFull>0</BreakOnTrcaeFull></DEBUG_TARGET><Debugger><Triggers></Triggers></Debugger><AVRGCCPLUGIN><FILES><SOURCEFILE>AudioOutputHost.c</SOURCEFILE><HEADERFILE>AudioOutputHost.h</HEADERFILE><OTHERFILE>makefile</OTHERFILE></FILES><CONFIGS><CONFIG><NAME>default</NAME><USESEXTERNALMAKEFILE>YES</USESEXTERNALMAKEFILE><EXTERNALMAKEFILE>makefile</EXTERNALMAKEFILE><PART>atmega128</PART><HEX>1</HEX><LIST>1</LIST><MAP>1</MAP><OUTPUTFILENAME>AudioOutputHost.elf</OUTPUTFILENAME><OUTPUTDIR>default\</OUTPUTDIR><ISDIRTY>1</ISDIRTY><OPTIONS/><INCDIRS/><LIBDIRS/><LIBS/><LINKOBJECTS/><OPTIONSFORALL>-Wall -gdwarf-2 -std=gnu99 -Os -funsigned-char -funsigned-bitfields -fpack-struct -fshort-enums</OPTIONSFORALL><LINKEROPTIONS></LINKEROPTIONS><SEGMENTS/></CONFIG></CONFIGS><LASTCONFIG>default</LASTCONFIG><USES_WINAVR>1</USES_WINAVR><GCC_LOC>C:\WinAVR-20100110\bin\avr-gcc.exe</GCC_LOC><MAKE_LOC>C:\WinAVR-20100110\utils\bin\make.exe</MAKE_LOC></AVRGCCPLUGIN><IOView><usergroups/><sort sorted="0" column="0" ordername="0" orderaddress="0" ordergroup="0"/></IOView><Files></Files><Events><Bookmarks></Bookmarks></Events><Trace><Filters></Filters></Trace></AVRStudio>

diff --git a/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.txt b/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.txt
new file mode 100644
index 000000000..7004053c4
--- /dev/null
+++ b/Demos/Host/ClassDriver/AudioOutputHost/AudioOutputHost.txt
@@ -0,0 +1,78 @@
+/** \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 Output Host Demo

+ *

+ *  \section Sec_Compat Demo Compatibility:

+ *

+ *  The following list indicates what microcontrollers are compatible with this demo.

+ *

+ *  - Series 7 USB AVRs (AT90USBxxx7)

+ *

+ *  \section Sec_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>Host</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 1.0 Class Specification \n

+ *        USBIF Audio 1.0 Class Terminal Types Specification \n

+ *        USBIF Audio 1.0 Data Formats Specification</td>

+ *   </tr>

+ *   <tr>

+ *    <td><b>Usable Speeds:</b></td>

+ *    <td>Full Speed Mode</td>

+ *   </tr>

+ *  </table>

+ *

+ *  \section Sec_Description Project Description:

+ *

+ *  Audio Output host demonstration application. This gives a simple reference

+ *  application for implementing a USB Audio host, for USB Audio devices using

+ *  the USB Audio 1.0 class profile.

+ *

+ *  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 attached

+ *  USB audio device instead.

+ *

+ *  \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.

+ *

+ *  <table>

+ *   <tr>

+ *    <td><b>Define Name:</b></td>

+ *    <td><b>Location:</b></td>

+ *    <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>

+ *   </tr>

+ *  </table>

+ */

+

diff --git a/Demos/Host/ClassDriver/AudioOutputHost/makefile b/Demos/Host/ClassDriver/AudioOutputHost/makefile
index 338590c97..76bf2cada 100644
--- a/Demos/Host/ClassDriver/AudioOutputHost/makefile
+++ b/Demos/Host/ClassDriver/AudioOutputHost/makefile
@@ -123,6 +123,9 @@ LUFA_PATH = ../../../..
 LUFA_OPTS  = -D USB_HOST_ONLY

 LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"

 

+LUFA_OPTS += -D MICROPHONE_BIASED_TO_HALF_RAIL

+LUFA_OPTS += -D USE_TEST_TONE

+

 

 # Create the LUFA source path variables by including the LUFA root makefile

 include $(LUFA_PATH)/LUFA/makefile

diff --git a/Demos/Host/ClassDriver/makefile b/Demos/Host/ClassDriver/makefile
index a69c6c31b..6bce1fd38 100644
--- a/Demos/Host/ClassDriver/makefile
+++ b/Demos/Host/ClassDriver/makefile
@@ -14,6 +14,12 @@
 # code.
 
 all:
+	$(MAKE) -C AudioInputHost clean
+	$(MAKE) -C AudioInputHost all
+
+	$(MAKE) -C AudioOutputHost clean
+	$(MAKE) -C AudioOutputHost all
+
 	$(MAKE) -C JoystickHostWithParser clean
 	$(MAKE) -C JoystickHostWithParser all
 
@@ -48,6 +54,8 @@ all:
 	$(MAKE) -C VirtualSerialHost all
 
 %:
+	$(MAKE) -C AudioInputHost $@
+	$(MAKE) -C AudioOutputHost $@
 	$(MAKE) -C JoystickHostWithParser $@
 	$(MAKE) -C KeyboardHost $@
 	$(MAKE) -C KeyboardHostWithParser $@
diff --git a/Demos/Host/LowLevel/AudioInputHost/AudioInputHost.txt b/Demos/Host/LowLevel/AudioInputHost/AudioInputHost.txt
new file mode 100644
index 000000000..329448af0
--- /dev/null
+++ b/Demos/Host/LowLevel/AudioInputHost/AudioInputHost.txt
@@ -0,0 +1,66 @@
+/** \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 Host Demo

+ *

+ *  \section Sec_Compat Demo Compatibility:

+ *

+ *  The following list indicates what microcontrollers are compatible with this demo.

+ *

+ *  - Series 7 USB AVRs (AT90USBxxx7)

+ *

+ *  \section Sec_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>Host</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 1.0 Class Specification \n

+ *        USBIF Audio 1.0 Class Terminal Types Specification \n

+ *        USBIF Audio 1.0 Data Formats Specification</td>

+ *   </tr>

+ *   <tr>

+ *    <td><b>Usable Speeds:</b></td>

+ *    <td>Full Speed Mode</td>

+ *   </tr>

+ *  </table>

+ *

+ *  \section Sec_Description Project Description:

+ *

+ *  Audio Input host demonstration application. This gives a simple reference

+ *  application for implementing a USB Audio host, for USB Audio devices using

+ *  the USB Audio 1.0 class profile.

+ *

+ *  Incoming audio will output in 8-bit PWM onto the timer 3 output compare

+ *  channel A, and will also be indicated on the board LEDs. Decouple the PWM

+ *  output with a capacitor and attach to a speaker to hear the audio.

+ *

+ *  \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.

+ *

+ *  <table>

+ *   <tr>

+ *    <td>

+ *     None

+ *    </td>

+ *   </tr>

+ *  </table>

+ */

+

diff --git a/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.txt b/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.txt
new file mode 100644
index 000000000..7004053c4
--- /dev/null
+++ b/Demos/Host/LowLevel/AudioOutputHost/AudioOutputHost.txt
@@ -0,0 +1,78 @@
+/** \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 Output Host Demo

+ *

+ *  \section Sec_Compat Demo Compatibility:

+ *

+ *  The following list indicates what microcontrollers are compatible with this demo.

+ *

+ *  - Series 7 USB AVRs (AT90USBxxx7)

+ *

+ *  \section Sec_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>Host</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 1.0 Class Specification \n

+ *        USBIF Audio 1.0 Class Terminal Types Specification \n

+ *        USBIF Audio 1.0 Data Formats Specification</td>

+ *   </tr>

+ *   <tr>

+ *    <td><b>Usable Speeds:</b></td>

+ *    <td>Full Speed Mode</td>

+ *   </tr>

+ *  </table>

+ *

+ *  \section Sec_Description Project Description:

+ *

+ *  Audio Output host demonstration application. This gives a simple reference

+ *  application for implementing a USB Audio host, for USB Audio devices using

+ *  the USB Audio 1.0 class profile.

+ *

+ *  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 attached

+ *  USB audio device instead.

+ *

+ *  \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.

+ *

+ *  <table>

+ *   <tr>

+ *    <td><b>Define Name:</b></td>

+ *    <td><b>Location:</b></td>

+ *    <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>

+ *   </tr>

+ *  </table>

+ */

+

diff --git a/Demos/Host/LowLevel/AudioOutputHost/makefile b/Demos/Host/LowLevel/AudioOutputHost/makefile
index 2a9e8d03a..487c7d7e7 100644
--- a/Demos/Host/LowLevel/AudioOutputHost/makefile
+++ b/Demos/Host/LowLevel/AudioOutputHost/makefile
@@ -123,6 +123,9 @@ LUFA_PATH = ../../../..
 LUFA_OPTS  = -D USB_HOST_ONLY

 LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_OPT_REG_ENABLED | USB_OPT_AUTO_PLL)"

 

+LUFA_OPTS += -D MICROPHONE_BIASED_TO_HALF_RAIL

+LUFA_OPTS += -D USE_TEST_TONE

+

 

 # Create the LUFA source path variables by including the LUFA root makefile

 include $(LUFA_PATH)/LUFA/makefile