Set MQTT username and password

firmware/esp32/include/config.h

@@ -3,10 +3,15 @@
 
 // TODO: make this a config.h
 
+// WI-FI
 #define SSID       "your_wifi_ssid"
 #define PASSWORD   "your_wifi_password"
 #define AUTH_MODE  WIFI_AUTH_WPA2_PSK
+
+// MQTT
 #define MQTT_ADDR  "mqtt://yourmqttserver"
 #define MQTT_PORT  1883
+#define MQTT_USER "your_username"
+#define MQTT_PASS "your_password"
 
 #endif

firmware/esp32/main/mqtt.cpp

@@ -66,6 +66,8 @@ static void mqtt_init(void) {
 
     mqtt_cfg.broker.address.uri = MQTT_ADDR;
     mqtt_cfg.broker.address.port = MQTT_PORT;
+    mqtt_cfg.credentials.username = MQTT_USER;
+    mqtt_cfg.credentials.authentication.password = MQTT_PASS;
 
     mqtt_client = esp_mqtt_client_init(&mqtt_cfg);