🧑‍💻 Handle PLR in manage_media

Marlin/src/feature/powerloss.cpp

@@ -108,13 +108,18 @@ void PrintJobRecovery::changed() {
  *
  * If a saved state exists send 'M1000 S' to initiate job recovery.
  */
-void PrintJobRecovery::check() {
+bool PrintJobRecovery::check() {
   //if (!card.isMounted()) card.mount();
+  bool success = false;
   if (card.isMounted()) {
     load();
-    if (!valid()) return cancel();
+    success = valid();
+    if (!success)
+      cancel();
+    else
       queue.inject(F("M1000S"));
   }
+  return success;
 }
 
 /**

Marlin/src/feature/powerloss.h

@@ -176,11 +176,11 @@ class PrintJobRecovery {
     static void open(const bool read) { card.openJobRecoveryFile(read); }
     static void close() { file.close(); }
 
-    static void check();
+    static bool check();
     static void resume();
     static void purge();
 
-    static void cancel() { purge(); IF_DISABLED(NO_SD_AUTOSTART, card.autofile_begin()); }
+    static void cancel() { purge(); }
 
     static void load();
     static void save(const bool force=ENABLED(SAVE_EACH_CMD_MODE), const float zraise=POWER_LOSS_ZRAISE, const bool raised=false);

Marlin/src/gcode/feature/powerloss/M413.cpp

@@ -49,7 +49,7 @@ void GcodeSuite::M413() {
     if (parser.seen_test('P')) recovery.purge();
     if (parser.seen_test('D')) recovery.debug(F("M413"));
     if (parser.seen_test('O')) recovery._outage(true);
-    if (parser.seen_test('C')) recovery.check();
+    if (parser.seen_test('C')) (void)recovery.check();
     if (parser.seen_test('E')) SERIAL_ECHOF(recovery.exists() ? F("PLR Exists\n") : F("No PLR\n"));
     if (parser.seen_test('V')) SERIAL_ECHOF(recovery.valid() ? F("Valid\n") : F("Invalid\n"));
   #endif

Marlin/src/pins/stm32f1/pins_FYSETC_AIO_II.h

@@ -27,7 +27,7 @@
 #define BOARD_WEBSITE_URL "fysetc.com"
 
 #define BOARD_NO_NATIVE_USB
-
+#define RESET_STEPPERS_ON_MEDIA_INSERT
 #define DISABLE_JTAG
 
 #define pins_v2_20190128                          // new pins define

Marlin/src/pins/stm32f1/pins_FYSETC_CHEETAH.h

@@ -32,7 +32,7 @@
 //#define BOGUS_TEMPERATURE_GRACE_PERIOD    2000
 
 #define BOARD_NO_NATIVE_USB
-
+#define RESET_STEPPERS_ON_MEDIA_INSERT
 #define DISABLE_JTAG
 
 #if EITHER(NO_EEPROM_SELECTED, FLASH_EEPROM_EMULATION)

Marlin/src/sd/cardreader.cpp

@@ -476,23 +476,27 @@ void CardReader::manage_media() {
   uint8_t stat = uint8_t(IS_SD_INSERTED());
   if (stat == prev_stat) return;
 
-  DEBUG_ECHOLNPGM("SD: Status changed from ", prev_stat, " to ", stat);
+  DEBUG_SECTION(mm, "CardReader::manage_media", true);
+  DEBUG_ECHOLNPGM("SD Status ", prev_stat, " -> ", stat);
 
   flag.workDirIsRoot = true;        // Return to root on mount/release
 
-  if (ui.detected()) {
+  if (!ui.detected()) {
+    DEBUG_ECHOLNPGM("SD: No UI Detected.");
+    return;
+  }
 
   uint8_t old_stat = prev_stat;
   prev_stat = stat;                 // Change now to prevent re-entry
 
   if (stat) {                       // Media Inserted
     safe_delay(500);                // Some boards need a delay to get settled
-      if (TERN1(SD_IGNORE_AT_STARTUP, old_stat != 2))
-        mount();                      // Try to mount the media
-      #if MB(FYSETC_CHEETAH, FYSETC_CHEETAH_V12, FYSETC_AIO_II)
-        reset_stepper_drivers();      // Workaround for Cheetah bug
-      #endif
+
+    // Try to mount the media (only later with SD_IGNORE_AT_STARTUP)
+    if (TERN1(SD_IGNORE_AT_STARTUP, old_stat != 2)) mount();
     if (!isMounted()) stat = 0;     // Not mounted?
+
+    TERN_(RESET_STEPPERS_ON_MEDIA_INSERT, reset_stepper_drivers()); // Workaround for Cheetah bug
   }
   else {
     #if PIN_EXISTS(SD_DETECT)
@@ -502,20 +506,21 @@ void CardReader::manage_media() {
 
   ui.media_changed(old_stat, stat); // Update the UI
 
-    if (stat) {
+  if (!stat) return;                // Exit if no media is present
+
   TERN_(SDCARD_EEPROM_EMULATION, settings.first_load());
-      if (old_stat == 2) {            // First mount?
+
+  if (old_stat != 2) return;        // First mount?
+
   DEBUG_ECHOLNPGM("First mount.");
-        #if ENABLED(POWER_LOSS_RECOVERY)
-          recovery.check();           // Check for PLR file. (If not there then call autofile_begin)
-        #elif DISABLED(NO_SD_AUTOSTART)
-          autofile_begin();           // Look for auto0.g on the next loop
-        #endif
-      }
-    }
-  }
-  else
-    DEBUG_ECHOLNPGM("SD: No UI Detected.");
+
+  bool do_auto = true; UNUSED(do_auto);
+
+  // Check for PLR file.
+  TERN_(POWER_LOSS_RECOVERY, if (recovery.check()) do_auto = false);
+
+  // Look for auto0.g on the next idle()
+  IF_DISABLED(NO_SD_AUTOSTART, if (do_auto) autofile_begin());
 }
 
 /**