From 105c81217c51f08aa54e1089377ba63f14c8f934 Mon Sep 17 00:00:00 2001
From: AnHardt <github@kitelab.de>
Date: Tue, 20 Mar 2018 12:08:53 +0100
Subject: [PATCH] Make 2 constants in autotune configurable

But hidden, since changes are rarely needed.
---
 Marlin/temperature.cpp | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Marlin/temperature.cpp b/Marlin/temperature.cpp
index 56c867738a..ad0e27f003 100644
--- a/Marlin/temperature.cpp
+++ b/Marlin/temperature.cpp
@@ -408,7 +408,9 @@ uint8_t Temperature::soft_pwm_amount[HOTENDS],
       }
 
       // Did the temperature overshoot very far?
-      #define MAX_OVERSHOOT_PID_AUTOTUNE 20
+      #ifndef MAX_OVERSHOOT_PID_AUTOTUNE
+        #define MAX_OVERSHOOT_PID_AUTOTUNE 20
+      #endif
       if (current > target + MAX_OVERSHOOT_PID_AUTOTUNE) {
         SERIAL_PROTOCOLLNPGM(MSG_PID_TEMP_TOO_HIGH);
         break;
@@ -451,7 +453,9 @@ uint8_t Temperature::soft_pwm_amount[HOTENDS],
       } // every 2 seconds
 
       // Timeout after MAX_CYCLE_TIME_PID_AUTOTUNE minutes since the last undershoot/overshoot cycle
-	  #define MAX_CYCLE_TIME_PID_AUTOTUNE 20L
+      #ifndef MAX_CYCLE_TIME_PID_AUTOTUNE
+        #define MAX_CYCLE_TIME_PID_AUTOTUNE 20L
+      #endif
       if (((ms - t1) + (ms - t2)) > (MAX_CYCLE_TIME_PID_AUTOTUNE * 60L * 1000L)) {
         SERIAL_PROTOCOLLNPGM(MSG_PID_TIMEOUT);
         break;