Marlin Binary Protocol Mark II (#14817)

Marlin/src/gcode/sdcard/M28_M29.cpp

@@ -48,10 +48,7 @@ void GcodeSuite::M28() {
 
     // Binary transfer mode
     if ((card.flag.binary_mode = binary_mode)) {
-      SERIAL_ECHO_START();
-      SERIAL_ECHO(" preparing to receive: ");
-      SERIAL_ECHOLN(p);
-      card.openFile(p, false);
+      SERIAL_ECHO_MSG("Switching to Binary Protocol");
       #if NUM_SERIAL > 1
         card.transfer_port_index = queue.port[queue.index_r];
       #endif