#define SERIAL_SPEED 115200

// LED
#define LED_PIN D0

// WIFI
#define wifi_ssid     "XXX"
#define wifi_password "XXX"

// MQTT
#define mqtt_server   "XXX"
#define mqtt_port     1883
#define mqtt_user     "XXX"
#define mqtt_password "XXX"

void setup();
void setupWifi();
void testConnectMQTT();
void callbackMQTT(char* topic, byte* payload, unsigned int length);
void loop();