Tool-change debug option

Marlin/src/core/debug_out.h

@@ -52,6 +52,7 @@
 #undef DEBUG_POS
 #undef DEBUG_XYZ
 #undef DEBUG_DELAY
+#undef DEBUG_SYNCHRONIZE
 
 #if DEBUG_OUT
 
@@ -83,6 +84,7 @@
   #define DEBUG_POS               SERIAL_POS
   #define DEBUG_XYZ               SERIAL_XYZ
   #define DEBUG_DELAY(ms)         serial_delay(ms)
+  #define DEBUG_SYNCHRONIZE()     planner.synchronize()
 
 #else
 
@@ -112,6 +114,7 @@
   #define DEBUG_POS(...)            NOOP
   #define DEBUG_XYZ(...)            NOOP
   #define DEBUG_DELAY(...)          NOOP
+  #define DEBUG_SYNCHRONIZE()       NOOP
 
 #endif