Update to ESP32-PoE

WS3/WS3-ESP32/ws3_wifi.ino

@@ -0,0 +1,45 @@
+// WiFiManager & Autoconfig
+//callback notifying us of the need to save config
+void saveConfigCallback () {
+  Serial.println("Should save config");
+  shouldSaveConfig = true;
+}
+
+void setupSpiffs() {
+  //clean FS, for testing
+  //SPIFFS.format();
+
+  //read configuration from FS json
+  debugln("mounting FS...");
+
+  if (SPIFFS.begin()) {
+    debugln("mounted file system");
+    if (SPIFFS.exists("/config.json")) {
+      //file exists, reading and loading
+      debugln("reading config file");
+      File configFile = SPIFFS.open("/config.json", "r");
+      if (configFile) {
+        debugln("opened config file");
+        size_t size = configFile.size();
+        // Allocate a buffer to store contents of the file.
+        std::unique_ptr<char[]> buf(new char[size]);
+
+        configFile.readBytes(buf.get(), size);
+        DynamicJsonBuffer jsonBuffer;
+        JsonObject& json = jsonBuffer.parseObject(buf.get());
+        json.printTo(Serial);
+        if (json.success()) {
+          debugln("\nparsed json");
+
+          strcpy(idx_windir,      json["idx_windir"]);
+          strcpy(idx_temp,        json["idx_temp"]);
+          strcpy(idx_rain,        json["idex_rain"]);
+        } else {
+          Serial.println("failed to load json config");
+        }
+      }
+    }
+  } else {
+    Serial.println("failed to mount FS");
+  }
+}