update configuration.h

Marlin/Configuration.h

@@ -102,7 +102,7 @@
  *
  * :[-1, 0, 1, 2, 3, 4, 5, 6, 7]
  */
-#define SERIAL_PORT 3
+#define SERIAL_PORT -1
 
 /**
  * Serial Port Baud Rate
@@ -139,7 +139,7 @@
 
 // Choose the name from boards.h that matches your setup
 #ifndef MOTHERBOARD
-  #define MOTHERBOARD BOARD_MKS_NANO4
+  #define MOTHERBOARD BOARD_MKS_ROBIN_NANO_V3
 #endif
 
 // Name displayed in the LCD "Ready" message and Info menu

Marlin/Configuration_adv.h

@@ -1490,7 +1490,7 @@
    *
    * [1] On AVR an interrupt-capable pin is best for UHS3 compatibility.
    */
-  // #define USB_FLASH_DRIVE_SUPPORT
+  #define USB_FLASH_DRIVE_SUPPORT
   #if ENABLED(USB_FLASH_DRIVE_SUPPORT)
     /**
      * USB Host Shield Library
@@ -1508,7 +1508,7 @@
     /**
      * Native USB Host supported by some boards (USB OTG)
      */
-    // #define USE_OTG_USB_HOST
+    #define USE_OTG_USB_HOST
 
     #if DISABLED(USE_OTG_USB_HOST)
       #define USB_CS_PIN    SDSS
@@ -1550,7 +1550,7 @@
   //#define NO_SD_DETECT
 
   // Multiple volume support - EXPERIMENTAL.
-  // #define MULTI_VOLUME
+  #define MULTI_VOLUME
   #if ENABLED(MULTI_VOLUME)
     #define VOLUME_SD_ONBOARD       1
     #define VOLUME_USB_FLASH_DRIVE  2

platformio.ini

@@ -13,7 +13,7 @@
 [platformio]
 src_dir      = Marlin
 boards_dir   = buildroot/share/PlatformIO/boards
-default_envs = mks_robin_nano4
+default_envs = mks_robin_nano_v3_usb_flash_drive
 include_dir  = Marlin
 extra_configs =
     ini/avr.ini