/** Maximum ADC range for the microphone input. */
#define ADC_MAX_RANGE 0x3FF
+ /** Defined to indicate that the microphone input voltage is biased to half the ADC reference voltage. */
+ #define MICROPHONE_BIASED_TO_HALF_RAIL
+
+ /** Defined to generate test tone when a button is pressed, rather than use a microphone for audio samples. */
+ #define USE_TEST_TONE
+
/** LED mask for the library LED driver, to indicate that the USB interface is not ready. */
#define LEDMASK_USB_NOTREADY LEDS_LED1