Configure / disable PRINTCOUNTER save interval (#20856)

Co-authored-by: Scott Lahteine <github@thinkyhead.com>

Marlin/Configuration.h

@@ -1754,6 +1754,9 @@
  * View the current statistics with M78.
  */
 //#define PRINTCOUNTER
+#if ENABLED(PRINTCOUNTER)
+  #define PRINTCOUNTER_SAVE_INTERVAL 60 // (minutes) EEPROM save interval during print
+#endif
 
 /**
  * Password

Marlin/src/HAL/LPC1768/inc/Conditionals_post.h

@@ -26,3 +26,10 @@
 #elif EITHER(I2C_EEPROM, SPI_EEPROM)
   #define USE_SHARED_EEPROM 1
 #endif
+
+// LPC1768 boards seem to lose steps when saving to EEPROM during print (issue #20785)
+// TODO: Which other boards are incompatible?
+#if defined(MCU_LPC1768) && PRINTCOUNTER_SAVE_INTERVAL > 0
+  #warning "To prevent step loss, motion will pause for PRINTCOUNTER auto-save."
+  #define PRINTCOUNTER_SYNC 1
+#endif

Marlin/src/MarlinCore.cpp

@@ -365,7 +365,8 @@ void startOrResumeJob() {
 
     queue.clear();
     quickstop_stepper();
-    print_job_timer.stop();
+
+    print_job_timer.abort();
 
     IF_DISABLED(SD_ABORT_NO_COOLDOWN, thermalManager.disable_all_heaters());
 

Marlin/src/lcd/marlinui.cpp

@@ -1495,8 +1495,8 @@ void MarlinUI::update() {
     #ifdef ACTION_ON_CANCEL
       host_action_cancel();
     #endif
+    IF_DISABLED(SDSUPPORT, print_job_timer.stop());
     TERN_(HOST_PROMPT_SUPPORT, host_prompt_open(PROMPT_INFO, PSTR("UI Aborted"), DISMISS_STR));
-    print_job_timer.stop();
     LCD_MESSAGEPGM(MSG_PRINT_ABORTED);
     TERN_(HAS_LCD_MENU, return_to_status());
   }

Marlin/src/libs/stopwatch.h

@@ -56,6 +56,7 @@ class Stopwatch {
      * @return true on success
      */
     static bool stop();
+    static inline bool abort() { return stop(); } // Alias by default
 
     /**
      * @brief Pause the stopwatch

Marlin/src/module/printcounter.cpp

@@ -41,6 +41,10 @@ Stopwatch print_job_timer;      // Global Print Job Timer instance
   #include "../libs/buzzer.h"
 #endif
 
+#if PRINTCOUNTER_SYNC
+  #include "../module/planner.h"
+#endif
+
 // Service intervals
 #if HAS_SERVICE_INTERVALS
   #if SERVICE_INTERVAL_1 > 0
@@ -160,6 +164,8 @@ void PrintCounter::saveStats() {
   // Refuses to save data if object is not loaded
   if (!isLoaded()) return;
 
+  TERN_(PRINTCOUNTER_SYNC, planner.synchronize());
+
   // Saves the struct to EEPROM
   persistentStore.access_start();
   persistentStore.write_data(address + sizeof(uint8_t), (uint8_t*)&data, sizeof(printStatistics));
@@ -244,11 +250,13 @@ void PrintCounter::tick() {
     #endif
   }
 
-  static uint32_t eeprom_next; // = 0
+  #if PRINTCOUNTER_SAVE_INTERVAL > 0
+    static millis_t eeprom_next; // = 0
     if (ELAPSED(now, eeprom_next)) {
-    eeprom_next = now + saveInterval * 1000;
+      eeprom_next = now + saveInterval;
       saveStats();
     }
+  #endif
 }
 
 // @Override
@@ -268,21 +276,20 @@ bool PrintCounter::start() {
   return false;
 }
 
-// @Override
+bool PrintCounter::_stop(const bool completed) {
-bool PrintCounter::stop() {
   TERN_(DEBUG_PRINTCOUNTER, debug(PSTR("stop")));
 
-  if (super::stop()) {
+  const bool did_stop = super::stop();
-    data.finishedPrints++;
+  if (did_stop) {
     data.printTime += deltaDuration();
-
+    if (completed) {
+      data.finishedPrints++;
       if (duration() > data.longestPrint)
         data.longestPrint = duration();
-
-    saveStats();
-    return true;
     }
-  else return false;
+  }
+  saveStats();
+  return did_stop;
 }
 
 // @Override

Marlin/src/module/printcounter.h

@@ -74,13 +74,15 @@ class PrintCounter: public Stopwatch {
      */
     static constexpr millis_t updateInterval = SEC_TO_MS(10);
 
+    #if PRINTCOUNTER_SAVE_INTERVAL > 0
       /**
        * @brief Interval in seconds between EEPROM saves
        * @details This const value defines what will be the time between each
        * EEPROM save cycle, the development team recommends to set this value
        * no lower than 3600 secs (1 hour).
        */
-    static constexpr uint16_t saveInterval = 3600;
+      static constexpr millis_t saveInterval = MIN_TO_MS(PRINTCOUNTER_SAVE_INTERVAL);
+    #endif
 
     /**
      * @brief Timestamp of the last call to deltaDuration()
@@ -173,7 +175,10 @@ class PrintCounter: public Stopwatch {
      * The following functions are being overridden
      */
     static bool start();
-    static bool stop();
+    static bool _stop(const bool completed);
+    static inline bool stop()  { return _stop(true);  }
+    static inline bool abort() { return _stop(false); }
+
     static void reset();
 
     #if HAS_SERVICE_INTERVALS