[wifi] Reject WiFi config on RP2040/RP2350 boards without CYW43 chip (#14990)

esphome/components/rp2040/__init__.py

@@ -24,6 +24,7 @@ from esphome.const import (
 from esphome.core import CORE, CoroPriority, EsphomeError, coroutine_with_priority
 from esphome.helpers import copy_file_if_changed, read_file, write_file_if_changed
 
+from . import boards
 from .const import KEY_BOARD, KEY_PIO_FILES, KEY_RP2040, rp2040_ns
 
 # force import gpio to register pin schema
@@ -35,6 +36,23 @@ AUTO_LOAD = ["preferences"]
 IS_TARGET_PLATFORM = True
 
 
+def get_board() -> str:
+    """Return the configured board name."""
+    return CORE.data[KEY_RP2040][KEY_BOARD]
+
+
+def board_has_wifi() -> bool:
+    """Return True if the configured board has WiFi (CYW43 wireless chip).
+
+    Returns True for unknown/custom boards to avoid rejecting valid
+    configurations for boards not in the generated list.
+    """
+    board_info = boards.BOARDS.get(get_board())
+    if board_info is None:
+        return True
+    return board_info.get("wifi", False)
+
+
 def set_core_data(config):
     CORE.data[KEY_RP2040] = {}
     CORE.data[KEY_CORE][KEY_TARGET_PLATFORM] = PLATFORM_RP2040