+/**
+ * Index OK.
+ */
+void setIndexOK(struct rpi_state*);
+
+/**
+ * Index Lost.
+ */
+void setIndexLost(struct rpi_state*);
+
+/**
+ * Turn commutation on.
+ */
+void setCommutationOn(struct rpi_state*);
+
+/**
+ * Turn commutation off.
+ */
+void setCommutationOff(struct rpi_state*);