LUFA_OPTS += -D USE_STATIC_OPTIONS="(USB_DEVICE_OPT_FULLSPEED | 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