Implement dummy for calibration save function

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

@@ -22,6 +22,6 @@
 #ifndef __SETTINGS_SETTINGS_H__
 #define __SETTINGS_SETTINGS_H__
 
-settings_save_calibration();
+int settings_save_calibration();
 
 #endif /* __SETTINGS_SETTINGS_H__ */

stm-firmware/main.c

@@ -229,7 +229,7 @@ int main()
 			/* Activate loundspeaker permanently */
 			loudspeaker_set(1);
 		} else if (pid_controller_active) {
-			/* In case temperature measuremnt is okay and controlelr is working, write output power */
+			/* In case temperature measurement is okay and controlelr is working, write output power */
 			oven_driver_set_power(pid_controller_output < 0 ? 0U : (uint8_t)pid_controller_output);
 		}
 

stm-firmware/settings/settings.c

@@ -19,3 +19,8 @@
 */
 
 #include <reflow-controller/settings/settings.h>
+
+int settings_save_calibration()
+{
+	return 0;
+}