+ * Here are the required sensor signs:
+ *
+ * +along nose up
+ * +across switch screws down
+ * +through TH down
+ *
+ * With the board aligned to have positive accel for the relevant
+ * axis, looking down from above we have:
+ *
+ * +roll counter clockwise (nose up)
+ * +pitch counter clockwise (switch screws down)
+ * +yaw counter clockwise (TH down)
+ */
+
+
+/*
+ * On EasyTimer v2, bmi088 pin 1 (NE corner of chip) is placed away
+ * from the USB edge of the board. Relative to bmi088 specs, to get
+ * the above values, we need to flip the X and Y axes, assigning
+ * values as follows:
+ *
+ * +along -Y +roll -Y
+ * +across -X +pitch -X