🎨 Flatten manage_media code

Marlin/src/sd/cardreader.cpp

@@ -472,50 +472,53 @@ void CardReader::mount() {
 #endif
 
 void CardReader::manage_media() {
-  static uint8_t prev_stat = 2;       // First call, no prior state
+  static uint8_t prev_stat = 2;     // First call, no prior state
   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
+  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
+  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
-      if (!isMounted()) stat = 0;     // Not mounted?
-    }
-    else {
-      #if PIN_EXISTS(SD_DETECT)
-        release();                    // Card is released
-      #endif
-    }
+  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
+    if (!isMounted()) stat = 0;     // Not mounted?
+  }
+  else {
+    #if PIN_EXISTS(SD_DETECT)
+      release();                    // Card is released
+    #endif
+  }
 
-    ui.media_changed(old_stat, stat); // Update the UI
+  ui.media_changed(old_stat, stat); // Update the UI
 
-    if (stat) {
-      TERN_(SDCARD_EEPROM_EMULATION, settings.first_load());
-      if (old_stat == 2) {            // 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.");
+  if (!stat) return;                // Exit if no media is present
+
+  TERN_(SDCARD_EEPROM_EMULATION, settings.first_load());
+
+  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
 }
 
 /**