151 lines
3.9 KiB
C++
151 lines
3.9 KiB
C++
// Digital pin connected to the DHT sensor. // dht pins: 1=power, 2=data, 3=NC, 4=GND. 10k from data to power needed
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#ifndef Adafruit_Sensor_H
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#include <Adafruit_Sensor.h> //required for dht library
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#define Adafruit_Sensor_H
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#endif
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#include <DHT.h>
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#ifndef SENSORDATA_H
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#include "sensordata.h"
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#define SENSORDATA_H
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#endif
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#ifndef HOMIE_H
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#include <Homie.h>
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#define HOMIE_H
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#endif
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class Sensor_DHT22
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{
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private:
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DHT *dht;
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HomieNode *sensorNode; //reference to HomieNode
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struct sensordata dataDHT22_temperature; //struct values are changed in setup()
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struct sensordata dataDHT22_humidity; //struct values are changed in setup()
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void loop_DHT22_temperature();
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void loop_DHT22_humidity();
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public:
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Sensor_DHT22(int pin);
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void init();
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void setSettings_Temperature(float minchange, unsigned long senddelaymax, unsigned long readdelay);
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void setSettings_Humidity(float minchange, unsigned long senddelaymax, unsigned long readdelay);
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void advertise(HomieNode& p_sensorNode);
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void loop();
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};
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Sensor_DHT22::Sensor_DHT22(int pin)
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{
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dht = new DHT(pin,DHT22,11); //default:11
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}
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void Sensor_DHT22::init() //Things to be done during setup()
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{
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Serial.println("initializing dht");
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dht->begin();
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}
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//Also called during setup()
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void Sensor_DHT22::setSettings_Temperature(float minchange, unsigned long senddelaymax, unsigned long readdelay)
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{
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dataDHT22_temperature.minchange=minchange;
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dataDHT22_temperature.senddelaymax=senddelaymax;
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dataDHT22_temperature.readdelay=readdelay;
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}
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//Also called during setup()
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void Sensor_DHT22::setSettings_Humidity(float minchange, unsigned long senddelaymax, unsigned long readdelay)
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{
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dataDHT22_humidity.minchange=minchange;
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dataDHT22_humidity.senddelaymax=senddelaymax;
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dataDHT22_humidity.readdelay=readdelay;
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}
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//Called during setup
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void Sensor_DHT22::advertise(HomieNode& p_sensorNode)
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{
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sensorNode = &p_sensorNode;
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#ifndef SENSOR_BMP180
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sensorNode->advertise("temperature");
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#else
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sensorNode->advertise("temperature_dht");
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#endif
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sensorNode->advertise("humidity");
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}
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void Sensor_DHT22::loop()
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{
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loop_DHT22_temperature();
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loop_DHT22_humidity();
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}
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void Sensor_DHT22::loop_DHT22_temperature()
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{
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sensordata &d=dataDHT22_temperature;
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bool _changed=false;
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if (millis() >= (d.lastreadtime+d.readdelay)) {
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d.value = dht->readTemperature();
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if (fabs(d.lastsentvalue-d.value)>=d.minchange){
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_changed=true;
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}
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d.lastreadtime=millis();
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}
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if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
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Serial.print("Sending DHT22_temperature. reason=");
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if (_changed) Serial.println("change"); else Serial.println("time");
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if (!(isnan(d.value) == 1)){ //success
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#ifndef SENSOR_BMP180
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sensorNode->setProperty("temperature").send(String(d.value));
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Homie.getLogger() << "temperature " << ": " << d.vlaue << endl;
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#else
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sensorNode->setProperty("temperature_dht").send(String(d.value));
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Homie.getLogger() << "temperature_dht " << ": " << d.value << endl;
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#endif
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d.lastsentvalue=d.value;
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}
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d.lastsent=millis();
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}
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}
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void Sensor_DHT22::loop_DHT22_humidity()
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{
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sensordata &d=dataDHT22_humidity;
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bool _changed=false;
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if (millis() >= (d.lastreadtime+d.readdelay)) {
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d.value = dht->readHumidity();
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if (fabs(d.lastsentvalue-d.value)>=d.minchange){
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_changed=true;
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}
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d.lastreadtime=millis();
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}
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if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
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Serial.print("Sending DHT22_humidity. reason=");
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if (_changed) Serial.println("change"); else Serial.println("time");
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if (!(isnan(d.value) == 1)){ //success
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Homie.getLogger() << "humidity " << ": " << d.value << endl;
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sensorNode->setProperty("humidity").send(String(d.value));
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d.lastsentvalue=d.value;
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}
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d.lastsent=millis();
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}
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} |