✨ Creality v5.2.1 board (#24760)

ini/stm32f1.ini

@@ -467,3 +467,24 @@ board                = genericSTM32F103VE
 board_build.variant  = MARLIN_F103Vx
 build_flags          = ${ZONESTAR_ZM3E.build_flags} -DTIMER_TONE=TIM1
 board_upload.maximum_size = 499712
+
+#
+# Creality (STM32F103RET6)
+#
+[env:STM32F103RET6_creality]
+platform                    = ${common_stm32f1.platform}
+extends                     = stm32_variant
+board                       = genericSTM32F103VE
+board_build.variant         = MARLIN_F103Vx
+board_build.offset          = 0x7000
+board_upload.offset_address = 0x08007000
+build_flags                 = ${stm32_variant.build_flags}
+                              -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
+debug_tool                  = jlink
+upload_protocol             = jlink