Add structure for safety controller config.

stm-firmware/include/reflow-controller/safety/safety-controller.h

@@ -18,9 +18,37 @@
 * If not, see <http://www.gnu.org/licenses/>.
 */
 
+/**
+ * @addtogroup safety-controller
+ * @{
+ */
+
+
 #ifndef __SAFETY_CONTROLLER_H__
 #define __SAFETY_CONTROLLER_H__
 
+#include <reflow-controller/safety/safety-controller-config-default.h>
+
+
+/**
+ * @brief Initialize the safety controller
+ *
+ * After a call to this function the controller is iniotlaized and the watchdog is set up.
+ * You have to call safety_controller_handle
+ * If this function fails, it will hang, because errors in the safety controller are not recoverable
+ */
+void safety_controller_init();
+
+/**
+ * @brief Handle the safety controller.
+ * @note This function must be executed periodically in order to prevent the watchdog from resetting the firmware
+ * @return 0 if successful
+ */
+int safety_controller_handle();
+
+int safety_controller_report_error();
 
 
 #endif /* __SAFETY_CONTROLLER_H__ */
+
+/** @} */