161 lines
4.1 KiB
C++
161 lines
4.1 KiB
C++
//#define DEBUG
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#include "Arduino.h"
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#include <Adafruit_Sensor.h> //required for dht library
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#include <DHT.h>
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#include <Wire.h>
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#include <BH1750.h>
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// data/homie/config.json hochladen mit platformio run --target uploadfs
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/*
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float humidity; //[%RH] DHT
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float temperature; //[deg C] DHT
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float light; //[Lux] BH1750
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bool movement //true bei pir output hight, false wenn low HC12?501?
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*/
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//GPIO2 is blue led
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#define DHTPIN D7 // Digital pin connected to the DHT sensor
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//DHT dht(13,DHT22,11); //default:11
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DHT dht(DHTPIN,DHT22,11); //default:11
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#define PIRPIN D6 //pir sensor needs 5v. output level is 3.3v
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BH1750 lightMeter(0x23);
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//timings
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unsigned long lastsensorreadtime=0;
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unsigned long sensorupdatedelay=60000; //delay for reading and transmitting
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unsigned long lastPIRtime=0;
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unsigned long PIRdelay=100; //polling delay
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unsigned long lastPIRSendValueTime=0;
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unsigned long PIRMaxDelay=1000*60*10; //maximum time until current value is send
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bool motion=false;
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#include <Homie.h>
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#define FW_NAME "sensoresp3"
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#define FW_VERSION "1.0.0"
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HomieNode sensorNode("sensors", "Sensors","sensors");
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char tempstring[16]; //for dtostrf
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void loopHandler();
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void setup() {
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Serial.begin(115200);
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Serial.println();
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Serial.println("Welcome");
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pinMode(PIRPIN, INPUT_PULLUP);
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Serial.println("initializing dht");
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dht.begin(); // dht pins: 1=power, 2=data, 3=NC, 4=GND. 10k from data to power needed
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Serial.println("initializing bh1750");
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Wire.begin(); //initialize i2c. SDA=D2, SCL=D1
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if (lightMeter.begin(BH1750::CONTINUOUS_HIGH_RES_MODE)) {
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Serial.println(F("BH1750 Advanced begin"));
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} else {
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Serial.println(F("Error initialising BH1750"));
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}
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Serial.println("connecting..");
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Homie_setFirmware(FW_NAME, FW_VERSION);
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Homie_setBrand(FW_NAME);
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Homie.setLoopFunction(loopHandler);
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sensorNode.advertise("temperature");
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sensorNode.advertise("humidity");
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sensorNode.advertise("light");
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sensorNode.advertise("motion");
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Homie.setup();
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Serial.println("connected"); //wird nicht ausgegeben. keine ahnung warum.
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}
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void loop() {
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Homie.loop();
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}
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void loopHandler() {
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if (millis() >= (lastPIRtime+PIRdelay)){
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if (digitalRead(PIRPIN)){
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if (!motion) { //changed?
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Homie.getLogger() << "motion " << ": " << "true" << endl;
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sensorNode.setProperty("motion").send(String("true"));
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}
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motion=true;
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lastPIRSendValueTime=millis();
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}else{
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if (motion) { //changed?
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Homie.getLogger() << "motion " << ": " << "false" << endl;
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sensorNode.setProperty("motion").send(String("false"));
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}
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motion=false;
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lastPIRSendValueTime=millis();
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}
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lastPIRtime=millis();
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}
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if (millis() >= (lastPIRSendValueTime+PIRMaxDelay)) { //send current value after some long time
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if (digitalRead(PIRPIN)){
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Homie.getLogger() << "motion resend " << ": " << "true" << endl;
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sensorNode.setProperty("motion").send(String("true"));
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motion=true;
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}else{
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Homie.getLogger() << "motion resend " << ": " << "false" << endl;
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sensorNode.setProperty("motion").send(String("false"));
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motion=false;
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}
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lastPIRSendValueTime=millis();
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}
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if (millis() >= (lastsensorreadtime+sensorupdatedelay))
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{
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Serial.println("Sending");
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if (WiFi.status() != WL_CONNECTED) //restart if wifi signal loss
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{
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ESP.reset();
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}
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float temperatureDHT = dht.readTemperature();
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if (!(isnan(temperatureDHT) == 1)){ //success
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Homie.getLogger() << "temperature " << ": " << temperatureDHT << endl;
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sensorNode.setProperty("temperature").send(String(temperatureDHT));
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}
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float humidityDHT = dht.readHumidity();
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if (!(isnan(humidityDHT) == 1)){ //success
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Homie.getLogger() << "humidity " << ": " << humidityDHT << endl;
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sensorNode.setProperty("humidity").send(String(humidityDHT));
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}
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float light = lightMeter.readLightLevel(); // [lux]
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Homie.getLogger() << "light " << ": " << light << endl;
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sensorNode.setProperty("light").send(String(light));
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lastsensorreadtime=millis();
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}
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}
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