#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <WiFiManager.h> //https://github.com/tzapu/WiFiManager
#include <ArduinoJson.h> //https://github.com/bblanchon/ArduinoJson pentru salvarea credentialelor in eprom
#include <WiFiClient.h>
#include <OneWire.h>
#include <PietteTech_DHT.h>
//ESP8266-01 nu are suficienta memorie pt update http
const char* mqtt_user="64x35up";
const char* mqtt_devid="1790";
// senzor de temperatura DHT
#define DHTPIN 2 // pinul de date
#define DHTTYPE DHT22 // DHT11 (albastru) DHT22 (alb)
#define DEBUG 0 //0=off 1=on
/********** NU edita mai jos ******************/
char mqttPassword[15]; //urmatoarele le va genera cu functia gen
char mqttSUB[23];
char espName[14];
char mqttESP[23];
char mqttTEMP[24];
char mqttLWT[23];
char mqttSTA[25];
char wifiID[15];
const String model = "ESP8266 ";
const String ver = "v1.1.1";
const char* mqttServer = "mqtt.clickhome.ro";
const int mqttPort = 1883;
long loopTimer = 900000; // miliseconds - by default trimite la 15 minute
long lastMsg = 0;
float loopTemp = 0;
float t = 0;
float loopHumi = 0;
float h = 0;
String mqttMessage;
bool bDHTstarted;
int acquireresult;
const unsigned long interval_update=1000*60*5; // face update la 5 min
unsigned long t_update=0;
void dht_wrapper();
PietteTech_DHT DHT(DHTPIN, DHTTYPE, dht_wrapper);
void dht_wrapper()
{
DHT.isrCallback();
}
//*********************************************************************
WiFiClient espClient;
PubSubClient client(espClient);
void generate_vars(){
strcpy (mqttPassword, "8219CH");
strcat (mqttPassword, mqtt_user);
strcpy (espName, mqtt_user);
strcat (espName, "-");
strcat (espName, mqtt_devid);
strcpy (mqttSUB, "cmnd/");
strcat (mqttSUB, espName);
strcat (mqttSUB, "/ESP");
strcpy (mqttESP, "stat/");
strcat (mqttESP, espName);
strcat (mqttESP, "/ESP");
strcpy (mqttTEMP, "stat/");
strcat (mqttTEMP, espName);
strcat (mqttTEMP, "/TEMP");
strcpy (mqttLWT, "tele/");
strcat (mqttLWT, espName);
strcat (mqttLWT, "/LWT");
strcpy (mqttSTA, "tele/");
strcat (mqttSTA, espName);
strcat (mqttSTA, "/STATE");
strcpy (wifiID, "ClickHome-");
strcat (wifiID, mqtt_devid);
}
String ipToString(IPAddress ip){
String s="";
for (int i=0; i<4; i++)
s += i ? "." + String(ip[i]) : String(ip[i]);
return s;
}
String getMacAddress() {
byte mac[6];
WiFi.macAddress(mac);
String cMac = "";
for (int i = 0; i < 6; ++i) {
cMac += String(mac[i],HEX);
if(i<5)
cMac += "-";
}
cMac.toUpperCase();
return cMac;
}
void reconectez() {
// ma conectez la mqtt server
while (!client.connected()) {
client.setServer(mqttServer, mqttPort);
#if DEBUG
Serial.print("AtloopTempting MQTT connection...");
#endif
// Incerc sa ma reconectez cu LWT din 5 in 5 secunde
if (client.connect(espName, mqtt_user, mqttPassword, mqttLWT, 1, 1, "Offline")) {
#if DEBUG
Serial.println("connected");
#endif
client.publish(mqttLWT,"Online",TRUE);
// trimit informatii utile cand ma conectez
String esp_info = "{\"ESPMac\":\"";
esp_info += getMacAddress();
esp_info += "\",\"IPAddress\":\"";
esp_info += ipToString(WiFi.localIP());
esp_info += "\"}";
String netinfo = "{\"Module\":\"";
netinfo += String (model);
netinfo += "DHT";
netinfo += String (DHTTYPE);
netinfo += "\",\"Version\":\"";
netinfo += String (ver);
netinfo += "\"}";
client.publish(mqttESP, netinfo.c_str(),TRUE);
#if DEBUG
Serial.println(netinfo);
#endif
client.publish(mqttESP, esp_info.c_str(),TRUE);
#if DEBUG
Serial.println(esp_info);
#endif
client.publish(mqttESP, "{\"LoopInterval\":\"15 minute\"}",TRUE); // trimit intervalul default
client.subscribe(mqttSUB);
} else {
#if DEBUG
Serial.print("failed, rc=");
Serial.print(client.state());
Serial.println(" try again in 60 seconds");
#endif
// Wait 60 seconds before retrying
delay(60000);
}
}
}
void setup()
{
#if DEBUG
Serial.begin(115200);
#endif
generate_vars(); //genereaza topicurile de mqtt in baza mqtt_user si mqtt_devid
// ma conectez la AP via wifi
WiFiManager wifi;
wifi.setConfigPortalTimeout(120); // a timeout so the ESP doesn't hang waiting to be configured, for instance after a power failure
wifi.setTimeout(180); // sta AP 3 minute apoi se reseteaza din nou
if (!wifi.autoConnect(wifiID)) {
#if DEBUG
Serial.println("timeout - going to sleep");
#endif
}
delay(200);
reconectez();
client.setCallback(getMessage); //setez functia care parseaza mesajele venite prin mqtt
update_state(); //facem update la mqtt cu Uptime
}
void update_state(){ //facem update la mqtt cu Uptime
String json = "{\"Uptime\":";
json += (int)millis()/3600000; //exprimat in ore
json += "}";
client.publish(mqttSTA, json.c_str(),FALSE);
}
void getMessage(char* topic, byte* payload, unsigned int length) {
mqttMessage="";
#if DEBUG
Serial.print("Message arrived in topic: ");
Serial.println(topic);
Serial.print("Message:");
#endif
for (int i = 0; i < length; i++) {
mqttMessage += (char)payload[i];
}
#if DEBUG
Serial.println(mqttMessage);
#endif
// daca a primit temp va trimite temperatura
if (mqttMessage == "temp")
{
#if DEBUG
Serial.println("Trimit temperatura si umiditatea");
#endif
acquireresult = DHT.acquireAndWait(2000);
if ( acquireresult == 0 )
{
t = DHT.getCelsius();
h = DHT.getHumidity();
delay(10);
String json = "{\"Temp\":";
json += String (t);
json += ",\"Humi\":";
json += String (h);
json += "}";
client.publish(mqttTEMP, json.c_str(),TRUE);
#if DEBUG
Serial.println(json);
#endif
}
else
{
t = h = 0;
#if DEBUG
Serial.println("Nu am putut citi temperatura si umiditatea");
#endif
}
}
// reset la ESP
if (mqttMessage == "reset")
{
String lastwords="Am fost resetat ...";
client.publish(mqttESP, lastwords.c_str(), TRUE);
delay (3000);
ESP.reset();
delay (5000);
}
// daca a primit valoarea in minute seteaza loopTimer si-l trimite in DB
if (mqttMessage == "debug")
{
loopTimer=30000; // setez sa trimita valori la 30 de secunde ca sa fac debug
client.publish(mqttESP, "{\"LoopInterval\":\"30 secunde\"}",TRUE);
}
if (mqttMessage == "10")
{
loopTimer=600000; // setez sa trimita valori la 10 minute
client.publish(mqttESP, "{\"LoopInterval\":\"10 minute\"}",TRUE);
}
if (mqttMessage == "15")
{
loopTimer=900000; // setez sa trimita valori la 15 minute
client.publish(mqttESP, "{\"LoopInterval\":\"15 minute\"}",TRUE);
}
if (mqttMessage == "30")
{
loopTimer=1800000; // setez sa trimita valori la 30 de minute
client.publish(mqttESP, "{\"LoopInterval\":\"30 de minute\"}",TRUE);
}
if (mqttMessage == "60")
{
loopTimer=3600000; // setez sa trimita valori la o ora
client.publish(mqttESP, "{\"LoopInterval\":\"o ora\"}",TRUE);
}
if (mqttMessage == "stop")
{
loopTimer=3600000000; // setez sa nu trimita valori
client.publish(mqttESP, "{\"LoopInterval\":\"oprit\"}",TRUE);
}
}
void loop()
{
if (!client.connected()) {
reconectez();
}
client.loop();
//facem update la $interval_update cu uptime
if (millis() - t_update > interval_update){
update_state();
t_update=millis();
}
//end update
if (millis() - lastMsg > loopTimer) {
lastMsg = millis();
acquireresult = DHT.acquireAndWait(2000);
if ( acquireresult == 0 ) {
loopTemp = DHT.getCelsius();
loopHumi = DHT.getHumidity();
delay(10);
String val = "{\"Temp\":";
val += String (loopTemp);
val += ",\"Humi\":";
val += String (loopHumi);
val += "}";
client.publish(mqttESP, val.c_str(),TRUE);
} else {
loopTemp = loopHumi = 0;
}
}
}