#define AO_ROMCONFIG_VERSION 2
-extern __code __at (0x00a0) uint16_t ao_romconfig_version;
-extern __code __at (0x00a2) uint16_t ao_romconfig_check;
-extern __code __at (0x00a4) uint16_t ao_serial_number;
-extern __code __at (0x00a6) uint32_t ao_radio_cal;
+#define AO_ROMCONFIG_SYMBOL(a) __code __at(a)
+
+extern AO_ROMCONFIG_SYMBOL(0x00a0) uint16_t ao_romconfig_version;
+extern AO_ROMCONFIG_SYMBOL(0x00a2) uint16_t ao_romconfig_check;
+extern AO_ROMCONFIG_SYMBOL(0x00a4) uint16_t ao_serial_number;
+extern AO_ROMCONFIG_SYMBOL(0x00a6) uint32_t ao_radio_cal;
#ifndef HAS_USB
#error Please define HAS_USB
int16_t v_batt; /* battery voltage */
int16_t sense_d; /* drogue continuity sense */
int16_t sense_m; /* main continuity sense */
+#if HAS_ACCEL_REF
+ uint16_t accel_ref; /* acceleration reference */
+#endif
};
#define AO_DATA_RING 32