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78 lines
2.4 KiB
C++
78 lines
2.4 KiB
C++
/*
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OpenMQTTGateway Addon - ESP8266 or Arduino program for home automation
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Act as a wifi or ethernet gateway between your 433mhz/infrared IR signal and a MQTT broker
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Send and receiving command by MQTT
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DHT reading Addon
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Copyright: (c)Florian ROBERT
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Contributors:
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- prahjister
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- 1technophile
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This file is part of OpenMQTTGateway.
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OpenMQTTGateway is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OpenMQTTGateway is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "User_config.h"
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#ifdef ZsensorDHT
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# include <DHT.h>
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# include <DHT_U.h>
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DHT dht(DHT_RECEIVER_PIN, DHT_SENSOR_TYPE);
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//Time used to wait for an interval before resending temp and hum
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unsigned long timedht = 0;
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void setupDHT() {
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Log.notice(F("Reading DHT on pin: %d" CR), DHT_RECEIVER_PIN);
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}
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void MeasureTempAndHum() {
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if (millis() > (timedht + TimeBetweenReadingDHT)) { //retrieving value of temperature and humidity of the box from DHT every xUL
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timedht = millis();
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static float persistedh;
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static float persistedt;
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float h = dht.readHumidity();
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// Read temperature as Celsius (the default)
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float t = dht.readTemperature();
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// Check if any reads failed and exit early (to try again).
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if (isnan(h) || isnan(t)) {
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Log.error(F("Failed to read from DHT sensor!" CR));
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} else {
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Log.trace(F("Creating DHT buffer" CR));
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StaticJsonBuffer<JSON_MSG_BUFFER> jsonBuffer;
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JsonObject& DHTdata = jsonBuffer.createObject();
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if (h != persistedh || dht_always) {
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DHTdata.set("hum", (float)h);
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} else {
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Log.trace(F("Same hum don't send it" CR));
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}
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if (t != persistedt || dht_always) {
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DHTdata.set("temp", (float)t);
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} else {
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Log.trace(F("Same temp don't send it" CR));
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}
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if (DHTdata.size() > 0)
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pub(DHTTOPIC, DHTdata);
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}
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persistedh = h;
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persistedt = t;
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}
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}
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#endif
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