From 5a6476eb8c7ab8fa38cdf5959cd4d80e6994cd5c Mon Sep 17 00:00:00 2001
From: Scott Lahteine <thinkyhead@users.noreply.github.com>
Date: Sun, 3 Nov 2024 16:05:36 -0600
Subject: [PATCH] =?UTF-8?q?=F0=9F=94=A7=20Extra=20axis=20serial=20RX=20pin?=
 =?UTF-8?q?s?=
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---
 Marlin/src/pins/pins_postprocess.h | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/Marlin/src/pins/pins_postprocess.h b/Marlin/src/pins/pins_postprocess.h
index 9ca89ce853277..1d3b0ebcce2a1 100644
--- a/Marlin/src/pins/pins_postprocess.h
+++ b/Marlin/src/pins/pins_postprocess.h
@@ -333,6 +333,24 @@
   #if !defined(Z4_SERIAL_RX_PIN) && PIN_EXISTS(Z4_SERIAL_TX)
     #define Z4_SERIAL_RX_PIN    Z4_SERIAL_TX_PIN
   #endif
+  #if !defined(I_SERIAL_RX_PIN) && PIN_EXISTS(I_SERIAL_TX)
+    #define I_SERIAL_RX_PIN      I_SERIAL_TX_PIN
+  #endif
+  #if !defined(J_SERIAL_RX_PIN) && PIN_EXISTS(J_SERIAL_TX)
+    #define J_SERIAL_RX_PIN      J_SERIAL_TX_PIN
+  #endif
+  #if !defined(K_SERIAL_RX_PIN) && PIN_EXISTS(K_SERIAL_TX)
+    #define K_SERIAL_RX_PIN      K_SERIAL_TX_PIN
+  #endif
+  #if !defined(U_SERIAL_RX_PIN) && PIN_EXISTS(U_SERIAL_TX)
+    #define U_SERIAL_RX_PIN      U_SERIAL_TX_PIN
+  #endif
+  #if !defined(V_SERIAL_RX_PIN) && PIN_EXISTS(V_SERIAL_TX)
+    #define V_SERIAL_RX_PIN      V_SERIAL_TX_PIN
+  #endif
+  #if !defined(W_SERIAL_RX_PIN) && PIN_EXISTS(W_SERIAL_TX)
+    #define W_SERIAL_RX_PIN      W_SERIAL_TX_PIN
+  #endif
   #if !defined(EX_SERIAL_RX_PIN) && PIN_EXISTS(EX_SERIAL_TX)
     #define EX_SERIAL_RX_PIN    EX_SERIAL_TX_PIN
   #endif