Refactor SD detect handler (#17380)

Co-Authored-By: Eric Ptak <trouch@users.noreply.github.com>

Marlin/src/MarlinCore.cpp

@@ -443,7 +443,6 @@ void startOrResumeJob() {
 
 /**
  * Minimal management of Marlin's core activities:
- *  - Check for Filament Runout
  *  - Keep the command buffer full
  *  - Check for maximum inactive time between commands
  *  - Check for maximum inactive time between stepper commands
@@ -454,13 +453,8 @@ void startOrResumeJob() {
  *  - Check if an idle but hot extruder needs filament extruded (EXTRUDER_RUNOUT_PREVENT)
  *  - Pulse FET_SAFETY_PIN if it exists
  */
-
 inline void manage_inactivity(const bool ignore_stepper_queue=false) {
 
-  #if HAS_FILAMENT_SENSOR
-    runout.run();
-  #endif
-
   if (queue.length < BUFSIZE) queue.get_available_commands();
 
   const millis_t ms = millis();
@@ -644,9 +638,53 @@ inline void manage_inactivity(const bool ignore_stepper_queue=false) {
 }
 
 /**
- * Standard idle routine keeps the machine alive
+ * Standard idle routine keeps the machine alive:
+ *  - Core Marlin activities
+ *  - Manage heaters (and Watchdog)
+ *  - Max7219 heartbeat, animation, etc.
+ *
+ *  Only after setup() is complete:
+ *  - Handle filament runout sensors
+ *  - Run HAL idle tasks
+ *  - Handle Power-Loss Recovery
+ *  - Run StallGuard endstop checks
+ *  - Handle SD Card insert / remove
+ *  - Handle USB Flash Drive insert / remove
+ *  - Announce Host Keepalive state (if any)
+ *  - Update the Print Job Timer state
+ *  - Update the Beeper queue
+ *  - Read Buttons and Update the LCD
+ *  - Run i2c Position Encoders
+ *  - Auto-report Temperatures / SD Status
+ *  - Update the Prusa MMU2
+ *  - Handle Joystick jogging
  */
 void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
+
+  // Core Marlin activities
+  manage_inactivity(TERN_(ADVANCED_PAUSE_FEATURE, no_stepper_sleep));
+
+  // Manage Heaters (and Watchdog)
+  thermalManager.manage_heater();
+
+  // Max7219 heartbeat, animation, etc
+  #if ENABLED(MAX7219_DEBUG)
+    max7219.idle_tasks();
+  #endif
+
+  // Return if setup() isn't completed
+  if (marlin_state == MF_INITIALIZING) return;
+
+  // Handle filament runout sensors
+  #if HAS_FILAMENT_SENSOR
+    runout.run();
+  #endif
+
+  // Run HAL idle tasks
+  #ifdef HAL_IDLETASK
+    HAL_idletask();
+  #endif
+
   // Handle Power-Loss Recovery
   #if ENABLED(POWER_LOSS_RECOVERY) && PIN_EXISTS(POWER_LOSS)
     recovery.outage();
@@ -660,29 +698,21 @@ void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
         if (endstops.tmc_spi_homing_check()) break;
   #endif
 
-  // Max7219 heartbeat, animation, etc.
-  #if ENABLED(MAX7219_DEBUG)
-    max7219.idle_tasks();
+  // Handle SD Card insert / remove
+  #if ENABLED(SDSUPPORT)
+    card.manage_media();
   #endif
 
-  // Read Buttons and Update the LCD
-  ui.update();
+  // Handle USB Flash Drive insert / remove
+  #if ENABLED(USB_FLASH_DRIVE_SUPPORT)
+    Sd2Card::idle();
+  #endif
 
   // Announce Host Keepalive state (if any)
   #if ENABLED(HOST_KEEPALIVE_FEATURE)
     gcode.host_keepalive();
   #endif
 
-  // Core Marlin activities
-  manage_inactivity(
-    #if ENABLED(ADVANCED_PAUSE_FEATURE)
-      no_stepper_sleep
-    #endif
-  );
-
-  // Manage heaters (and Watchdog)
-  thermalManager.manage_heater();
-
   // Update the Print Job Timer state
   #if ENABLED(PRINTCOUNTER)
     print_job_timer.tick();
@@ -693,6 +723,9 @@ void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
     buzzer.tick();
   #endif
 
+  // Read Buttons and Update the LCD
+  ui.update();
+
   // Run i2c Position Encoders
   #if ENABLED(I2C_POSITION_ENCODERS)
     static millis_t i2cpem_next_update_ms;
@@ -705,11 +738,6 @@ void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
     }
   #endif
 
-  // Run HAL idle tasks
-  #ifdef HAL_IDLETASK
-    HAL_idletask();
-  #endif
-
   // Auto-report Temperatures / SD Status
   #if HAS_AUTO_REPORTING
     if (!gcode.autoreport_paused) {
@@ -722,11 +750,6 @@ void idle(TERN_(ADVANCED_PAUSE_FEATURE, bool no_stepper_sleep/*=false*/)) {
     }
   #endif
 
-  // Handle USB Flash Drive insert / remove
-  #if ENABLED(USB_FLASH_DRIVE_SUPPORT)
-    Sd2Card::idle();
-  #endif
-
   // Update the Prusa MMU2
   #if ENABLED(PRUSA_MMU2)
     mmu2.mmu_loop();
@@ -983,8 +1006,8 @@ void setup() {
     SETUP_RUN(ui.show_bootscreen());
   #endif
 
-  #if ENABLED(SDSUPPORT) && defined(SDCARD_CONNECTION) && !SD_CONNECTION_IS(LCD)
-    SETUP_RUN(card.mount());          // Mount onboard / custom SD card before settings.first_load
+  #if BOTH(SDSUPPORT, SDCARD_EEPROM_EMULATION)
+    SETUP_RUN(card.mount());          // Mount media with settings before first_load
   #endif
 
   SETUP_RUN(settings.first_load());   // Load data from EEPROM if available (or use defaults)
@@ -1151,10 +1174,6 @@ void setup() {
     queue.inject_P(PSTR(STARTUP_COMMANDS));
   #endif
 
-  #if ENABLED(INIT_SDCARD_ON_BOOT) && !HAS_SPI_LCD
-    SETUP_RUN(card.beginautostart());
-  #endif
-
   #if ENABLED(HOST_PROMPT_SUPPORT)
     SETUP_RUN(host_action_prompt_end());
   #endif