+struct ao_adc {
+ 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 */
+#if HAS_ACCEL_REF
+ uint16_t accel_ref; /* acceleration reference */
+#endif
+};
+
+/*
+ * Voltage divider on ADC battery sampler
+ */
+#define AO_BATTERY_DIV_PLUS 5 /* 5k */
+#define AO_BATTERY_DIV_MINUS 10 /* 10k */
+
+/*
+ * Voltage divider on ADC igniter samplers
+ */
+#define AO_IGNITE_DIV_PLUS 100 /* 100k */
+#define AO_IGNITE_DIV_MINUS 27 /* 27k */
+
+/*
+ * ADC reference in decivolts
+ */
+#define AO_ADC_REFERENCE_DV 33
+