u16 x_min, x_max;
u16 y_min, y_max;
u16 pressure_min, pressure_max;
+
+ u16 debounce_max; /* max number of additional readings
+ * per sample */
+ u16 debounce_tol; /* tolerance used for filtering */
+ u16 debounce_rep; /* additional consecutive good readings
+ * required after the first two */
+ int (*get_pendown_state)(void);
};