Optimize Power-Loss Recovery (#12440)

Marlin/src/feature/power_loss_recovery.h

@@ -26,7 +26,6 @@
  */
 
 #include "../sd/cardreader.h"
-#include "../core/millis_t.h"
 #include "../inc/MarlinConfigPre.h"
 
 #define SAVE_INFO_INTERVAL_MS 0
@@ -37,7 +36,9 @@ typedef struct {
   uint8_t valid_head;
 
   // Machine state
-  float current_position[NUM_AXIS], feedrate;
+  float current_position[NUM_AXIS];
+
+  uint16_t feedrate;
 
   #if HOTENDS > 1
     uint8_t active_hotend;
@@ -74,26 +75,45 @@ typedef struct {
   millis_t print_job_elapsed;
 
   uint8_t valid_foot;
+
 } job_recovery_info_t;
 
-extern job_recovery_info_t job_recovery_info;
+class PrintJobRecovery {
+  public:
+    static SdFile file;
+    static job_recovery_info_t info;
 
-enum JobRecoveryPhase : unsigned char {
-  JOB_RECOVERY_IDLE,
-  JOB_RECOVERY_MAYBE,
-  JOB_RECOVERY_YES,
-  JOB_RECOVERY_DONE
+    static void init();
+
+    static bool enabled;
+    static void enable(const bool onoff);
+    static void changed();
+
+    static void check();
+    static void resume();
+
+    static inline bool exists() { return card.jobRecoverFileExists(); }
+    static inline void open(const bool read) { card.openJobRecoveryFile(read); }
+    static inline void close() { file.close(); }
+
+    static void purge();
+    static void load();
+    static void save(const bool force=
+      #if ENABLED(SAVE_EACH_CMD_MODE)
+        true
+      #else
+        false
+      #endif
+    );
+
+  static inline bool valid() { return info.valid_head && info.valid_head == info.valid_foot; }
+
+    #if ENABLED(DEBUG_POWER_LOSS_RECOVERY)
+      static void debug(PGM_P const prefix);
+    #endif
+
+  private:
+    static void write();
 };
-extern JobRecoveryPhase job_recovery_phase;
 
-#if HAS_LEVELING
-  #define APPEND_CMD_COUNT 9
-#else
-  #define APPEND_CMD_COUNT 7
-#endif
-
-extern char job_recovery_commands[BUFSIZE + APPEND_CMD_COUNT][MAX_CMD_SIZE];
-extern uint8_t job_recovery_commands_count;
-
-void check_print_job_recovery();
-void save_job_recovery_info();
+extern PrintJobRecovery recovery;