#define ao_arch_critical(b) __critical { b }
+struct ao_adc {
+ uint16_t tick; /* tick when the sample was read */
+ int16_t accel; /* accelerometer */
+ int16_t pres; /* pressure sensor */
+ int16_t temp; /* temperature sensor */
+ int16_t v_batt; /* battery voltage */
+ int16_t sense_d; /* drogue continuity sense */
+ int16_t sense_m; /* main continuity sense */
+};
+
+#define AO_ADC_RING 32
+
+/* ao_button.c */
+void
+ao_p2_isr(void);
+
+void
+ao_button_init(void);
+
+#if HAS_BUTTON_P0
+void
+ao_p0_isr(void) ao_arch_interrupt(13);
+#endif
+
+char
+ao_button_get(void) __critical;
+
+/* ao_string.c */
+
+void
+_ao_xmemcpy(__xdata uint8_t *dst, __xdata uint8_t *src, uint8_t count);
+
+#define ao_xmemcpy(d,s,c) _ao_xmemcpy((__xdata uint8_t *) (d), (__xdata uint8_t *) (s), (c))
+
+void
+_ao_xmemset(__xdata uint8_t *dst, uint8_t value, uint8_t count);
+
+#define ao_xmemset(d,v,c) _ao_xmemset((__xdata uint8_t *) (d), (v), (c))
+
+int8_t
+_ao_xmemcmp(__xdata uint8_t *a, __xdata uint8_t *b, uint8_t count);
+
+#define ao_xmemcmp(d,s,c) _ao_xmemcmp((__xdata uint8_t *) (d), (__xdata uint8_t *) (s), (c))
+
#endif /* _AO_ARCH_H_ */