test

/*
  Sketch which publishes temperature data from a DS1820 sensor to a MQTT topic.
  This sketch goes in deep sleep mode once the temperature has been sent to the MQTT
  topic and wakes up periodically (configure SLEEP_DELAY_IN_SECONDS accordingly).
  Hookup guide:
  - connect D0 pin to RST pin in order to enable the ESP8266 to wake up periodically
  - DS18B20:
     + connect VCC (3.3V) to the appropriate DS18B20 pin (VDD)
     + connect GND to the appopriate DS18B20 pin (GND)
     + connect D4 to the DS18B20 data pin (DQ)
     + connect a 4.7K resistor between DQ and VCC.
*/

#include <ESP8266WiFi.h>
#include <PubSubClient.h>
#include <OneWire.h>
#include <DallasTemperature.h>
#include <Streaming.h>


#include <Adafruit_NeoPixel.h>
#ifdef __AVR__
#include <avr/power.h>
#endif

#define SLEEP_DELAY_IN_SECONDS  120
#define ONE_WIRE_BUS            D4      // DS18B20 pin
#define PIN 2
const char* ssid = "Time";
const char* password = "motocarro";

//const char* ssid = "sfy";
//const char* password = "WifiSoftForYou17";

const char* mqtt_server = "mqtt.thingspeak.com";
const char* mqtt_username = "joaquinsfy@gmail.com";
const char* mqtt_password = "Motocarro13";
const char* mqtt_topic = "sensors/test/temperature";

WiFiClient espClient;
PubSubClient client(espClient);

OneWire oneWire(ONE_WIRE_BUS);
DallasTemperature DS18B20(&oneWire);

char temperatureString[6];

void setup() {
  // setup serial port
  Serial.begin(115200);
  // setup WiFi
  setup_wifi();
  client.setServer(mqtt_server, 1883);
  client.setCallback(callback);
  // setup OneWire bus
  DS18B20.begin();
}

void setup_wifi() {
  Serial.println();
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  while (WiFi.status() != WL_CONNECTED ) {
    Serial.println(".");
    delay(500);
  }
  Serial.println("");
  Serial.println("WiFi connected");
  Serial.println("IP address: ");
  Serial.println(WiFi.localIP());
}

void callback(char* topic, byte* payload, unsigned int length) {
  Serial.print("Message arrived [");
  Serial.print(topic);
  Serial.print("] ");
  for (int i = 0; i < length; i++) {
    Serial.print((char)payload[i]);
  }
  Serial.println();
}

void reconnect() {
  // Loop until we're reconnected
  while (!client.connected()) {
    Serial.print("Attempting MQTT connection...");
    // Attempt to connect
    if (client.connect("ESP8266Client", mqtt_username, mqtt_password)) {
      Serial.println("connected");
    } else {
      Serial.print("failed, rc=");
      Serial.print(client.state());
      Serial.println(" try again in 5 seconds");
      // Wait 5 seconds before retrying
      delay(5000);
    }
  }
}

float getTemperature(unsigned int sensor) {
  Serial << "Requesting DS18B20 temperature..." << endl;
  float temp;
  do {
    DS18B20.requestTemperatures();
    temp = DS18B20.getTempCByIndex(sensor);
    delay(100);
  } while (temp == 85.0 || temp == (-127.0));

  return temp;
}

void loop()
{
  enviatemperatura1();
  Serial << "Closing WiFi connection..." << endl;
  WiFi.disconnect();

  Serial << "Entering deep sleep mode for " << SLEEP_DELAY_IN_SECONDS << " seconds..." << endl;
  ESP.deepSleep(SLEEP_DELAY_IN_SECONDS * 1000000, WAKE_RF_DEFAULT);
  //ESP.deepSleep(10 * 1000, WAKE_NO_RFCAL);
  delay(500);   // wait for deep sleep to happen
}

void enviatemperatura1()
{ if (!client.connected()) {
    reconnect();
  }
  client.loop();

  // temperatura 1
  float temperature = getTemperature(0);
  // convert temperature to a string with two digits before the comma and 2 digits for precision
  dtostrf(temperature, 2, 2, temperatureString);
  // send temperature to the serial console
  Serial << "Sending temperature: " << temperatureString << endl;
  // send temperature to the MQTT topic
  String data = String(temperature, DEC);
  // Get the data string length
  int length = data.length();
  char msgBuffer[length];
  data.toCharArray(msgBuffer, length + 1);
  Serial.println(msgBuffer);
  // Publish data to ThingSpeak. Replace <YOUR-CHANNEL-ID> with your channel ID and <YOUR-CHANNEL-WRITEAPIKEY> with your write API key
  client.publish("channels/218099/publish/fields/field3/P0FMMIR5ADIW03HO", msgBuffer);

  Serial << "Closing MQTT connection..." << endl;
  client.disconnect();

}