Refactor CPPDEFINES to tuple style

Author: ivankravets

builder/frameworks/arduino.py

@@ -36,7 +36,7 @@
 
 env.Prepend(
     CPPDEFINES=[
-        "ARDUINO=%s" % FRAMEWORK_VERSION.split(".")[1],
+        ("ARDUINO", int(FRAMEWORK_VERSION.split(".")[1])),
         "LWIP_OPEN_SRC"
     ],
     CPPPATH=[

builder/main.py

@@ -88,7 +88,7 @@ def _get_board_f_flash(env):
     ],
 
     CPPDEFINES=[
-        "F_CPU=$BOARD_F_CPU",
+        ("F_CPU", "$BOARD_F_CPU"),
         "__ets__",
         "ICACHE_FLASH"
     ],