From 0edf5a2ab578b491850ef8588b86cde2cb91f5e1 Mon Sep 17 00:00:00 2001
From: Roxy-3D <Roxy-3D@users.noreply.github.com>
Date: Thu, 18 Jan 2018 16:51:27 -0600
Subject: [PATCH] Better handle serial over runs...

---
 Marlin/MarlinSerial.cpp | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/Marlin/MarlinSerial.cpp b/Marlin/MarlinSerial.cpp
index 91a0eab706..36b8f2bdf5 100644
--- a/Marlin/MarlinSerial.cpp
+++ b/Marlin/MarlinSerial.cpp
@@ -68,6 +68,8 @@
     uint8_t xon_xoff_state = XON_XOFF_CHAR_SENT | XON_CHAR;
   #endif
 
+  void clear_command_queue();
+
   #if ENABLED(SERIAL_STATS_DROPPED_RX)
     uint8_t rx_dropped_bytes = 0;
   #endif
@@ -386,6 +388,7 @@
     // may be written to rx_buffer_tail, making the buffer appear full rather than empty.
     CRITICAL_SECTION_START;
       rx_buffer.head = rx_buffer.tail = 0;
+      clear_command_queue();
     CRITICAL_SECTION_END;
 
     #if ENABLED(SERIAL_XON_XOFF)