Fix IS_SD_PRINTING

MarlinKimbra/Configuration_Feature.h

@@ -980,6 +980,7 @@
  ****************************************************************************************/
 //#define SDSUPPORT                              // Enable SD Card Support in Hardware Console
 //#define SDSLOW                                 // Use slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
+//#define SDEXTRASLOW                            // Use even slower SD transfer mode (not normally needed - uncomment if you're getting volume init error)
 //#define SD_CHECK_AND_RETRY                     // Use CRC checks and retries on the SD communication
 
 // Some RAMPS and other boards don't detect when an SD card is inserted. You can work

MarlinKimbra/Marlin_main.cpp

@@ -45,9 +45,7 @@
 #endif
 #include "stepper.h"
 #include "temperature.h"
-#if ENABLED(SDSUPPORT)
-  #include "cardreader.h"
-#endif
+#include "cardreader.h"
 #include "configuration_store.h"
 
 #if ENABLED(USE_WATCHDOG)

MarlinKimbra/cardreader.cpp

@@ -196,7 +196,9 @@ void CardReader::initsd() {
   cardOK = false;
   if (root.isOpen()) root.close();
 
-  #if ENABLED(SDSLOW)
+  #if ENABLED(SDEXTRASLOW)
+    #define SPI_SPEED SPI_QUARTER_SPEED
+  #elif ENABLED(SDSLOW)
     #define SPI_SPEED SPI_HALF_SPEED
   #else
     #define SPI_SPEED SPI_FULL_SPEED

MarlinKimbra/ultralcd.cpp

@@ -4,11 +4,7 @@
 #if ENABLED(ULTRA_LCD)
 
 #include "Marlin_main.h"
-
-#if ENABLED(SDSUPPORT)
-  #include "cardreader.h"
-#endif
-
+#include "cardreader.h"
 #include "temperature.h"
 
 #if ENABLED(AUTO_BED_LEVELING_FEATURE)
@@ -2382,11 +2378,7 @@ char *ftostr52(const float &x) {
 #elif ENABLED(NEXTION)
 
 #include "Marlin_main.h"
-
-#if ENABLED(SDSUPPORT)
-  #include "cardreader.h"
-#endif
-
+#include "cardreader.h"
 #include "temperature.h"
 
 #if ENABLED(AUTO_BED_LEVELING_FEATURE)