From 4a89ef6273c6b0fafd3132900863e5a1f332b579 Mon Sep 17 00:00:00 2001
From: geijt <3473304+geijt@users.noreply.github.com>
Date: Sun, 17 Dec 2023 23:33:46 +0100
Subject: [PATCH] Fix Creality E3 "Free-runs" (#26533)

Followup to #25636
---
 Marlin/src/inc/Conditionals_adv.h             |  2 +-
 .../pins/stm32f4/pins_CREALITY_CR4NTXXC10.h   | 20 +++++++++----------
 .../MARLIN_STM32F401RE_FREERUNS/ldscript.ld   | 10 +++++-----
 ini/stm32f4.ini                               |  3 ++-
 4 files changed, 18 insertions(+), 17 deletions(-)

diff --git a/Marlin/src/inc/Conditionals_adv.h b/Marlin/src/inc/Conditionals_adv.h
index f62714df4b62..f1caf52c7374 100644
--- a/Marlin/src/inc/Conditionals_adv.h
+++ b/Marlin/src/inc/Conditionals_adv.h
@@ -1277,7 +1277,7 @@
 #if LCD_IS_SERIAL_HOST && !defined(LCD_SERIAL_PORT)
   #if MB(BTT_SKR_MINI_E3_V1_0, BTT_SKR_MINI_E3_V1_2, BTT_SKR_MINI_E3_V2_0, BTT_SKR_MINI_E3_V3_0, BTT_SKR_MINI_E3_V3_0_1, BTT_SKR_E3_TURBO, BTT_OCTOPUS_V1_1, AQUILA_V101)
     #define LCD_SERIAL_PORT 1
-  #elif MB(CREALITY_V24S1_301, CREALITY_V24S1_301F4, CREALITY_F401RE, CREALITY_V423, MKS_ROBIN, PANOWIN_CUTLASS, KODAMA_BARDO)
+  #elif MB(CREALITY_V24S1_301, CREALITY_V24S1_301F4, CREALITY_F401RE, CREALITY_V423, CREALITY_CR4NTXXC10, MKS_ROBIN, PANOWIN_CUTLASS, KODAMA_BARDO)
     #define LCD_SERIAL_PORT 2
   #else
     #define LCD_SERIAL_PORT 3
diff --git a/Marlin/src/pins/stm32f4/pins_CREALITY_CR4NTXXC10.h b/Marlin/src/pins/stm32f4/pins_CREALITY_CR4NTXXC10.h
index 77be5777535a..0a6f3e3059bf 100644
--- a/Marlin/src/pins/stm32f4/pins_CREALITY_CR4NTXXC10.h
+++ b/Marlin/src/pins/stm32f4/pins_CREALITY_CR4NTXXC10.h
@@ -100,15 +100,15 @@
 #define X_STEP_PIN                          PC2
 #define X_DIR_PIN                           PB9
 
-#define Y_ENABLE_PIN                        PC3
+#define Y_ENABLE_PIN               X_ENABLE_PIN
 #define Y_STEP_PIN                          PB8
 #define Y_DIR_PIN                           PB7
 
-#define Z_ENABLE_PIN                        PC3
+#define Z_ENABLE_PIN               X_ENABLE_PIN
 #define Z_STEP_PIN                          PB6
 #define Z_DIR_PIN                           PB5
 
-#define E0_ENABLE_PIN                       PC3
+#define E0_ENABLE_PIN              X_ENABLE_PIN
 #define E0_STEP_PIN                         PB4
 #define E0_DIR_PIN                          PB3
 
@@ -142,21 +142,21 @@
    * If undefined software serial is used according to the pins below
    */
   #define X_HARDWARE_SERIAL  Serial6
-  #define Y_HARDWARE_SERIAL  Serial6
-  #define Z_HARDWARE_SERIAL  Serial6
-  #define E0_HARDWARE_SERIAL Serial6
+  #define Y_HARDWARE_SERIAL  X_HARDWARE_SERIAL
+  #define Z_HARDWARE_SERIAL  X_HARDWARE_SERIAL
+  #define E0_HARDWARE_SERIAL X_HARDWARE_SERIAL
 
   #ifndef X_SLAVE_ADDRESS
-    #define X_SLAVE_ADDRESS 0
+    #define X_SLAVE_ADDRESS                   0
   #endif
   #ifndef Y_SLAVE_ADDRESS
-    #define Y_SLAVE_ADDRESS 1
+    #define Y_SLAVE_ADDRESS                   1
   #endif
   #ifndef Z_SLAVE_ADDRESS
-    #define Z_SLAVE_ADDRESS 2
+    #define Z_SLAVE_ADDRESS                   2
   #endif
   #ifndef E0_SLAVE_ADDRESS
-    #define E0_SLAVE_ADDRESS 3
+    #define E0_SLAVE_ADDRESS                  3
   #endif
 
   // Software serial
diff --git a/buildroot/share/PlatformIO/variants/MARLIN_STM32F401RE_FREERUNS/ldscript.ld b/buildroot/share/PlatformIO/variants/MARLIN_STM32F401RE_FREERUNS/ldscript.ld
index f34e389fb103..2c57307813d4 100644
--- a/buildroot/share/PlatformIO/variants/MARLIN_STM32F401RE_FREERUNS/ldscript.ld
+++ b/buildroot/share/PlatformIO/variants/MARLIN_STM32F401RE_FREERUNS/ldscript.ld
@@ -51,17 +51,17 @@
 ENTRY(Reset_Handler)
 
 /* Highest address of the user mode stack */
-_estack = 0x20017FFB;    /* end of RAM */
+_estack = 0x20000000 + LD_MAX_DATA_SIZE;    /* end of RAM */
 
 /* Generate a link error if heap and stack don't fit into RAM */
-_Min_Heap_Size = 0x200;      /* required amount of heap  */
-_Min_Stack_Size = 0x400; /* required amount of stack */
+_Min_Heap_Size = 0x200;     /* required amount of heap  */
+_Min_Stack_Size = 0x400;    /* required amount of stack */
 
 /* Specify the memory areas */
 MEMORY
 {
-FLASH (rx)     : ORIGIN = 0x8000000 + LD_FLASH_OFFSET, LENGTH = LD_MAX_SIZE - LD_FLASH_OFFSET
-RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = 96K
+  FLASH (rx)     : ORIGIN = 0x8000000 + LD_FLASH_OFFSET, LENGTH = LD_MAX_SIZE - LD_FLASH_OFFSET
+  RAM (xrw)      : ORIGIN = 0x20000000, LENGTH = LD_MAX_DATA_SIZE
 }
 
 /* Define output sections */
diff --git a/ini/stm32f4.ini b/ini/stm32f4.ini
index 84d26553e08c..3f3347194334 100644
--- a/ini/stm32f4.ini
+++ b/ini/stm32f4.ini
@@ -746,9 +746,10 @@ board                       = genericSTM32F401RE
 board_build.variant         = marlin_STM32F401RE_freeruns
 board_build.offset          = 0x10000
 board_upload.offset_address = 0x08010000
+board_build.rename          = firmware-{date}-{time}.bin
 build_flags                 = ${stm32_variant.build_flags} -DMCU_STM32F401RE -DSTM32F4
                               -DSS_TIMER=4 -DTIMER_SERVO=TIM5
-                              -DENABLE_HWSERIAL3 -DTRANSFER_CLOCK_DIV=8
+                              -DTRANSFER_CLOCK_DIV=8
 build_unflags               = ${stm32_variant.build_unflags} -DUSBCON -DUSBD_USE_CDC
 extra_scripts               = ${stm32_variant.extra_scripts}
                               pre:buildroot/share/PlatformIO/scripts/random-bin.py