add support for platformio

main/CMakeLists.txt

@@ -2,6 +2,6 @@ idf_component_register(
     SRCS 
         "main.c"
         "display-interface.c"
-        "wifi.c"
+        "wifi/espidf-v4.0.c"
     INCLUDE_DIRS ""
 )

main/wifi/espidf-v4.1.c

@@ -1,3 +1,4 @@
+#ifdef FRAMEWORK_espidf
 // Copyright 2020 Lukas Haubaum
 //
 // Licensed under the GNU Affero General Public License, Version 3;
@@ -169,4 +170,5 @@ void wifi_start(void)
 bool wifi_is_connected(void)
 {
     return connected;
-}
+}
+#endif

main/wifi/zephyr.c

@@ -0,0 +1,3 @@
+#ifdef FRAMEWORK_zephyr
+#error WIFI not implemented, yet
+#endif