-__pdata int16_t ao_height;
-__pdata int16_t ao_speed;
-__pdata int16_t ao_accel;
-__xdata int16_t ao_max_height;
-static __pdata int32_t ao_avg_height_scaled;
-__xdata int16_t ao_avg_height;
-
-__pdata int16_t ao_error_h;
-__pdata int16_t ao_error_h_sq_avg;