Support Black STM32F407VET6 with RAMPS-like shield (#13524)

buildroot/share/PlatformIO/scripts/black_stm32f407vet6.py

@@ -0,0 +1,29 @@
+import os,shutil
+from SCons.Script import DefaultEnvironment
+from platformio import util
+
+env = DefaultEnvironment()
+platform = env.PioPlatform()
+board = env.BoardConfig()
+
+FRAMEWORK_DIR = platform.get_package_dir("framework-arduinoststm32")
+CMSIS_DIR = os.path.join(FRAMEWORK_DIR, "CMSIS", "CMSIS")
+assert os.path.isdir(FRAMEWORK_DIR)
+assert os.path.isdir(CMSIS_DIR)
+assert os.path.isdir("buildroot/share/PlatformIO/variants")
+
+mcu_type = board.get("build.mcu")[:-2]
+variant = board.get("build.variant")
+series = mcu_type[:7].upper() + "xx"
+variant_dir = os.path.join(FRAMEWORK_DIR, "variants", variant)
+
+source_dir = os.path.join("buildroot/share/PlatformIO/variants", variant)
+assert os.path.isdir(source_dir)
+
+if not os.path.isdir(variant_dir):
+    os.mkdir(variant_dir)
+
+for file_name in os.listdir(source_dir):
+    full_file_name = os.path.join(source_dir, file_name)
+    if os.path.isfile(full_file_name):
+        shutil.copy(full_file_name, variant_dir)