sensoresp/include/sensor_raingauge.cpp

#ifdef SENSOR_RAINGAUGE
#include "sensor_raingauge.h"

//uses ATS177 Latched hall sensor for rotation sensing

Sensor_Raingauge::Sensor_Raingauge(int p)
{
  pin=p;  
}

void Sensor_Raingauge::init() //Things to be done during setup()
{    
  init_ok=true;
  
  pinMode(pin,INPUT_PULLUP);
  attachInterrupt(digitalPinToInterrupt(pin),interrupt_raingauge,CHANGE); //anemometer interrupt
}

//Also called during setup()
void Sensor_Raingauge::setSettings(float minchange, unsigned long senddelaymax, unsigned long readdelay)
{
    data.minchange=minchange;
    data.senddelaymax=senddelaymax;
    data.readdelay=readdelay;
}

//Called during setup
void Sensor_Raingauge::advertise(HomieNode& p_sensorNode)
{
    sensorNode = &p_sensorNode;
    sensorNode->advertise("rain");    
}

void Sensor_Raingauge::sensorloop()
{
  if (init_ok) {
    sensordata &d=data;

    bool _changed=false;
    if (millis() >= (d.lastreadtime+d.readdelay)) {
      
      if (millis()-raingauge_lasttimereset > d.senddelaymax) {
        raingauge_idleflag=true; //raingauge didn't flip for a long time
      }
      if (raingauge_pulsecounter>0){ //if rg flipped
        if (raingauge_idleflag) { //last flip is before reset time
          d.value=raingauge_pulsecounter*RAINGAUGE_FLIPAMOUNT; //set to fixed amount if flip was exactly at that time
          raingauge_idleflag=false;
        }else{
          d.value=3600000/(millis()-raingauge_lasttimereset)/raingauge_pulsecounter*RAINGAUGE_FLIPAMOUNT;
          raingauge_idleflag=false;
        }
        _changed=true;
      }

      d.lastreadtime=millis();
    }

    if (_changed || millis() >= (d.lastsent+d.senddelaymax)) {
      Serial.print("Sending rain. reason=");
      if (_changed) Serial.println("change"); else Serial.println("time");

      if (!_changed) { //no flip since a long time
        d.value=0; //set to no rain
      }

      Homie.getLogger() << "rain " << ": " << d.value << endl;
      sensorNode->setProperty("rain").send(String(d.value));

      //reset when sent. makes it more accurate but keeps fast response
      raingauge_pulsecounter=0; //reset counter
      raingauge_lasttimereset=millis();
          
      d.lastsentvalue=d.value;
      
      d.lastsent=millis();
    }
  }
}



#endif