[core] Allow using "arduino" as framework

builder/frameworks/arduino.py

@@ -0,0 +1,14 @@
+# Copyright (c) Kuba Szczodrzyński 2022-05-16.
+
+from SCons.Script import DefaultEnvironment
+
+env = DefaultEnvironment()
+board = env.BoardConfig()
+platform = env.PioPlatform()
+
+# support passing "arduino" as framework
+frameworks = board.get("frameworks")
+framework = next(fw for fw in frameworks if "arduino" in fw)
+builder = platform.frameworks[framework]["script"]
+builder = builder.rpartition("/")[2]
+env.SConscript(builder, exports="env")

platform.json

@@ -8,6 +8,10 @@
   },
   "version": "0.3.0",
   "frameworks": {
+    "arduino": {
+      "title": "Generic Arduino framework",
+      "script": "builder/frameworks/arduino.py"
+    },
     "realtek-ambz-sdk": {
       "tilte": "Realtek AmebaZ - SDK",
       "package": "framework-realtek-amb1",

platform.py

@@ -83,6 +83,13 @@ class LibretuyaPlatform(PlatformBase):
             BasePackageManager._load_manifest = BasePackageManager.load_manifest
             BasePackageManager.load_manifest = load_manifest
 
+        # allow using "arduino" as framework
+        if framework == "arduino":
+            board = self.get_boards(options.get("board"))
+            frameworks = board.get("frameworks")
+            framework = next(fw for fw in frameworks if framework in fw)
+            options.get("pioframework")[0] = framework
+
         # set specific compiler versions
         if framework.startswith("realtek-ambz"):
             self.packages["toolchain-gccarmnoneeabi"]["version"] = "~1.50401.0"
@@ -131,6 +138,11 @@ class LibretuyaPlatform(PlatformBase):
             util.merge_dicts(result, board._manifest)
             board._manifest = result
 
+        # add "arduino" framework
+        has_arduino = any("arduino" in fw for fw in board.manifest["frameworks"])
+        if has_arduino:
+            board.manifest["frameworks"].append("arduino")
+
         # inspired by platform-ststm32/platform.py
         debug = board.manifest.get("debug", {})
         if not debug: