From d5681ac6a0a8c481a528cbd0caafae58571d8e64 Mon Sep 17 00:00:00 2001
From: tomaszduda23 <tomaszduda23@gmail.com>
Date: Mon, 20 Jul 2026 20:29:00 +0200
Subject: [PATCH] [nrf52] add platformio deprecation warning (#17705)

---
 esphome/components/nrf52/__init__.py | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/esphome/components/nrf52/__init__.py b/esphome/components/nrf52/__init__.py
index 5b3c250f34..2edc988ff8 100644
--- a/esphome/components/nrf52/__init__.py
+++ b/esphome/components/nrf52/__init__.py
@@ -283,6 +283,13 @@ def _validate_mcumgr(config):
 
 def _final_validate(config):
 
+    # Remove before 2027.2.0
+    if CORE.using_toolchain_platformio:
+        _LOGGER.warning(
+            "The 'platformio' toolchain for nRF52 is deprecated and will be removed in ESPHome 2027.2.0. "
+            "Please use 'toolchain: sdk-nrf' instead."
+        )
+
     if CONF_DFU in config:
         _validate_mcumgr(config)
     if config[KEY_BOOTLOADER] == BOOTLOADER_ADAFRUIT: