Domotique/WifiControlSensor/MQTT.ino

52 lines
1.3 KiB
Arduino
Raw Normal View History

2016-03-14 01:47:43 +01:00
// Create an ESP8266 WiFiClient class to connect to the MQTT server.
WiFiClient client;
Adafruit_MQTT_Client *mqtt;
Adafruit_MQTT_Publish *mqtt_temp;
const char TEMPERATURE_FEED[] = "/feeds/temperature";
boolean mqttIsConfigured;
int publishMQTT(int temp) {
if (MQTT_connect() == 0) {
Serial.println("publishing !");
mqtt_temp->publish(temp);
}
}
int setupMQTT(char *server, char *user, char *passwd) {
if(server == ""){
Serial.println("Mqtt Server not configured");
}
// Setup the MQTT client class by passing in the WiFi client and MQTT server and login details.
mqtt = new Adafruit_MQTT_Client(&client, server, 1883, user, passwd);
mqtt_temp = new Adafruit_MQTT_Publish(mqtt, TEMPERATURE_FEED);
return 0;
}
2016-03-11 01:31:03 +01:00
// Function to connect and reconnect as necessary to the MQTT server.
// Should be called in the loop function and it will take care if connecting.
int MQTT_connect() {
int8_t ret;
// Stop if already connected.
2016-03-14 01:47:43 +01:00
if (mqtt->connected()) {
2016-03-11 01:31:03 +01:00
return 0;
}
uint8_t retries = 3;
2016-03-14 01:47:43 +01:00
while ((ret = mqtt->connect()) != 0) { // connect will return 0 for connected
Serial.println(mqtt->connectErrorString(ret));
2016-03-11 01:31:03 +01:00
Serial.println("Retrying MQTT connection ...");
2016-03-14 01:47:43 +01:00
mqtt->disconnect();
2016-03-11 01:31:03 +01:00
delay(100); // wait
retries--;
if (retries == 0) {
return -1;
}
}
return 0;
}