http://robotdyn.com/catalog/boards/mega ... micro_usb/
Working fine with RFLink
ESP code example :
#include <ESP8266WiFi.h>
#include <WiFiClient.h>
#include <PubSubClient.h>
char* thing = "RFLink"; //MQTT Status messages
char* thing_S = "RFLinkS"; //MQTT RFLink messages
char* Down = "RFLink down!";
char* Alive = "RFLink Alive";
char* Carillon = "10;NewKaku;00aff80e;1;ALLON"; //RFLink send to my doorbell
// Network parameters
const char* ssid = "YourSSID";
const char* password = "YourPassword";
const char* mqtt_server = "ServerIPaddress";
WiFiClient espClient;
PubSubClient client(espClient);
long now, timemqtt = 0;
boolean stringComplete = false;
String inputString = "";
void reconnect()
{
// Loop until we're reconnected
if (!client.connected())
{
//Serial.print("Attempting MQTT connection...");
// Attempt to connect
client.connect(thing,thing,1,false,Down); //Connect MQTT with last will
if (client.connected())
{
//Serial.println("connected");
// Once connected, publish an announcement...
client.publish(thing, Alive);
client.subscribe("Carillon",1);
}
}
}
void callback(char* topic, byte* payload, unsigned int length)
{
if (strcmp(topic,"Carillon")==0)
{
if ((char)payload[0] == '1')
{
Serial.println(Carillon);
}
}
}
void setup()
{
Serial.begin(57600);
client.setServer(mqtt_server, 1883);
client.setCallback(callback);
WiFi.begin(ssid, password);
while (WiFi.status() != WL_CONNECTED)
{
delay(500);
//Serial.print(".");
}
//Serial.println();
//Serial.print("IP@ : ");
//Serial.println(WiFi.localIP());
//Serial.printf("Mac@ : %s\n", WiFi.macAddress().c_str());
}
void loop()
{
now = millis();
if (!client.connected() && ((now - timemqtt) > 5000))
{
timemqtt = now;
reconnect();
}
if (client.connected())
client.loop();
if (Serial.available())
{
while (Serial.available() && !stringComplete)
{
char inChar = (char)Serial.read();
inputString += inChar;
if (inChar == '\n')
{
stringComplete = true;
}
}
if (stringComplete)
{
const char* msg = inputString.c_str();
client.publish(thing_S, msg);
inputString = "";
stringComplete = false;
}
}
}