--- /dev/null
+#ifndef _analog_h_included__
+#define _analog_h_included__
+
+#include <stdint.h>
+
+#if defined(__AVR_AT90USB162__)
+#define analogRead(pin) (0)
+#define analogReference(ref)
+#else
+int16_t analogRead(uint8_t pin);
+extern uint8_t analog_reference_config_val;
+#define analogReference(ref) (analog_reference_config_val = (ref) << 6)
+#endif
+
+#endif