From 3007eee22e837ad45c25213dfba4f706f0327e4a Mon Sep 17 00:00:00 2001
From: Scott Lahteine <github@thinkyhead.com>
Date: Wed, 28 Mar 2018 13:45:47 -0500
Subject: [PATCH] Require a checksum when writing to SD

From #10204 by @adriancuzman
---
 Marlin/src/gcode/queue.cpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/Marlin/src/gcode/queue.cpp b/Marlin/src/gcode/queue.cpp
index 08ba22c43c..727b45ca39 100644
--- a/Marlin/src/gcode/queue.cpp
+++ b/Marlin/src/gcode/queue.cpp
@@ -341,6 +341,12 @@ inline void get_serial_commands() {
 
           gcode_LastN = gcode_N;
         }
+        #if ENABLED(SDSUPPORT)
+          else if (card.saving) {
+            gcode_line_error(PSTR(MSG_ERR_NO_CHECKSUM));
+            return;
+          }
+        #endif
 
         // Movement commands alert when stopped
         if (IsStopped()) {