Use chip_variant for Arduino libraries path

Author: Jason2866

builder/frameworks/component_manager.py

@@ -45,6 +45,8 @@ def __init__(self, env):
         self.board = env.BoardConfig()
         # Extract MCU type from board configuration, defaulting to esp32
         self.mcu = self.board.get("build.mcu", "esp32").lower()
+        chip_variant = self.board.get("build.chip_variant", "").lower()
+        self.chip_variant = chip_variant if chip_variant else self.mcu
         # Get project source directory path
         self.project_src_dir = env.subst("$PROJECT_SRC_DIR")
 
@@ -74,7 +76,7 @@ def arduino_libs_mcu(self):
         """
         if self._arduino_libs_mcu is None:
             ald = self.platform.get_package_dir("framework-arduinoespressif32-libs")
-            self._arduino_libs_mcu = str(Path(ald) / self.mcu) if ald else ""
+            self._arduino_libs_mcu = str(Path(ald) / self.chip_variant) if ald else ""
         return self._arduino_libs_mcu