From d353d67a34637c8ad2039444b79748b6f913767c Mon Sep 17 00:00:00 2001
From: InsanityAutomation
 <38436470+InsanityAutomation@users.noreply.github.com>
Date: Thu, 16 Apr 2020 05:41:05 -0400
Subject: [PATCH] SD detect override for older Creality3D RAMPS (#17469)

---
 Marlin/src/pins/ramps/pins_RAMPS_CREALITY.h | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/pins/ramps/pins_RAMPS_CREALITY.h b/Marlin/src/pins/ramps/pins_RAMPS_CREALITY.h
index f6847feb4..5134812c1 100644
--- a/Marlin/src/pins/ramps/pins_RAMPS_CREALITY.h
+++ b/Marlin/src/pins/ramps/pins_RAMPS_CREALITY.h
@@ -39,7 +39,9 @@
   #define FIL_RUNOUT2_PIN                     15  // Creality CR-X can use dual runout sensors
 #endif
 
-#define SD_DETECT_PIN                         49  // Always define onboard SD detect
+#ifndef SD_DETECT_PIN
+  #define SD_DETECT_PIN                       49  // Always define onboard SD detect
+#endif
 
 #define PS_ON_PIN                             40  // Used by CR2020 Industrial series