From 8ee2612ebb3b29e5b41a17ff42380712f3cee50d Mon Sep 17 00:00:00 2001
From: Roxy-3D <Roxanne.Rae.Neufeld@gmail.com>
Date: Thu, 23 Mar 2017 15:57:57 -0500
Subject: [PATCH] The hex nibble routine can print again!

The code to print a hex nibble got broke.   SERIAL_ECHO( (char) ) isn't
suitable for its use.
---
 Marlin/hex_print_routines.cpp | 6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

diff --git a/Marlin/hex_print_routines.cpp b/Marlin/hex_print_routines.cpp
index 19563ccb8..cc69d7120 100644
--- a/Marlin/hex_print_routines.cpp
+++ b/Marlin/hex_print_routines.cpp
@@ -27,10 +27,10 @@
 #include "hex_print_routines.h"
 
 void prt_hex_nibble(uint8_t n) {
-  if (n <= 9)
-    SERIAL_ECHO(n);
+  if (n <= 9) 
+    SERIAL_CHAR('0'+n);
   else
-    SERIAL_ECHO((char)('A' + n - 10));
+    SERIAL_CHAR('A' + n - 10);
   delay(3);
 }