✨ Creality E3 Free-runs Silent Motherboard (#25636)

ini/stm32f4.ini

@@ -737,6 +737,33 @@ extends         = env:STM32F401RE_creality
 debug_tool      = stlink
 upload_protocol = stlink
 
+#
+# STM32F401RE_freeruns  Creality E3 Free-runs Silent Motherboard
+#
+[env:STM32F401RE_freeruns]
+extends                     = stm32_variant
+board                       = genericSTM32F401RE
+board_build.variant         = marlin_STM32F401RE_freeruns
+board_build.offset          = 0x10000
+board_upload.offset_address = 0x08010000
+build_flags                 = ${stm32_variant.build_flags} -DMCU_STM32F401RE -DSTM32F4
+                              -DSS_TIMER=4 -DTIMER_SERVO=TIM5
+                              -DENABLE_HWSERIAL3 -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
+monitor_speed               = 115200
+
+[env:STM32F401RE_freeruns_jlink]
+extends                     = env:STM32F401RE_freeruns
+debug_tool                  = jlink
+upload_protocol             = jlink
+
+[env:STM32F401RE_freeruns_stlink]
+extends                     = env:STM32F401RE_freeruns
+debug_tool                  = stlink
+upload_protocol             = stlink
+
 #
 # BigTree SKR mini E3 V3.0.1 (STM32F401RCT6 ARM Cortex-M4)
 #