From c0d031cd1ed403a5a7deddb5301a8b94e5c71b1c Mon Sep 17 00:00:00 2001
From: Keith Bennett <13375512+thisiskeithb@users.noreply.github.com>
Date: Wed, 5 Aug 2020 20:42:03 -0700
Subject: [PATCH] Add Chitu 3D V6 2nd Filament Runout pin (#18922)

---
 Marlin/src/pins/stm32f1/pins_CHITU3D_V6.h | 8 +++++++-
 1 file changed, 7 insertions(+), 1 deletion(-)

diff --git a/Marlin/src/pins/stm32f1/pins_CHITU3D_V6.h b/Marlin/src/pins/stm32f1/pins_CHITU3D_V6.h
index 75aa9146f3..7a3777da46 100644
--- a/Marlin/src/pins/stm32f1/pins_CHITU3D_V6.h
+++ b/Marlin/src/pins/stm32f1/pins_CHITU3D_V6.h
@@ -111,7 +111,13 @@
 #define BEEPER_PIN                          PB0
 //#define LED_PIN                           PD3
 //#define POWER_LOSS_PIN                    PG2   // PG4 PW_DET
-#define FIL_RUNOUT_PIN                      PA15  // MT_DET
+
+#ifndef FIL_RUNOUT_PIN
+  #define FIL_RUNOUT_PIN                    PA15  // MT_DET
+#endif
+#ifndef FIL_RUNOUT2_PIN
+  #define FIL_RUNOUT2_PIN                   PF13
+#endif
 
 //
 // TronXY TFT Support