ESP8266 change recommended framework version to 2.7.2 (#1208)

esphome/components/http_request/__init__.py

@@ -4,7 +4,7 @@ import esphome.codegen as cg
 import esphome.config_validation as cv
 from esphome import automation
 from esphome.const import CONF_ID, CONF_TIMEOUT, CONF_ESPHOME, CONF_METHOD, \
-    CONF_ARDUINO_VERSION, ARDUINO_VERSION_ESP8266_2_5_1, CONF_URL
+    CONF_ARDUINO_VERSION, ARDUINO_VERSION_ESP8266, CONF_URL
 from esphome.core import CORE, Lambda
 from esphome.core_config import PLATFORMIO_ESP8266_LUT
 
@@ -34,7 +34,7 @@ def validate_framework(config):
         return config
 
     framework = PLATFORMIO_ESP8266_LUT[version] if version in PLATFORMIO_ESP8266_LUT else version
-    if framework < ARDUINO_VERSION_ESP8266_2_5_1:
+    if framework < ARDUINO_VERSION_ESP8266['2.5.1']:
         raise cv.Invalid('This component is not supported on arduino framework version below 2.5.1')
     return config
 

esphome/components/sntp/time.py

@@ -1,6 +1,7 @@
 from esphome.components import time as time_
 import esphome.config_validation as cv
 import esphome.codegen as cg
+from esphome.core import CORE
 from esphome.const import CONF_ID, CONF_SERVERS
 
 
@@ -27,3 +28,7 @@ def to_code(config):
 
     yield cg.register_component(var, config)
     yield time_.register_time(var, config)
+
+    if CORE.is_esp8266 and len(servers) > 1:
+        # We need LwIP features enabled to get 3 SNTP servers (not just one)
+        cg.add_build_flag('-DPIO_FRAMEWORK_ARDUINO_LWIP2_LOW_MEMORY')