// https://wokwi.com/projects/410262429268493313

#include <RunningAverage.h>

#define pin_SET 18

long Timer_Cycle = 0;
const long Period_Cycle     = 30000;
const long at_Cycle_Warmup  =  7000;
const long at_Cycle_Measure = 10000;

char* mode = "measure";

const bool cyclic = false;

long y = 0;
int yMean;

// instantiate object for running values
const byte RVn = 10;
RunningAverage RV_long(RVn); // long period running values (for global average and min/max)

void setup() {
  Serial.begin(115200);

  pinMode(pin_SET, OUTPUT);

  if (cyclic) {
    digitalWrite(pin_SET, LOW);
  } else {
    digitalWrite(pin_SET, HIGH);
  }
}

void loop() {

  if (cyclic) {
    if ((Timer_Cycle == 0) or (millis() > Timer_Cycle + Period_Cycle)) {
      Timer_Cycle = millis();
      mode = "sleep";
      Serial.println("set mode to 'sleep'"); 
      digitalWrite(pin_SET, LOW);
    }

    if ((mode == "sleep") and (millis() > Timer_Cycle + at_Cycle_Warmup)) {
      mode = "warmup";
      Serial.println("set mode to 'warmup'"); 
      digitalWrite(pin_SET, HIGH);
    }

    if ((mode=="warmup") and (millis() > Timer_Cycle + at_Cycle_Measure)) {
      mode = "measure";
      Serial.println("set mode to 'measure'"); 
    }
  }

  if ((mode=="measure") or (cyclic == false)) {
    // explicitly start with clean running values
    RV_long.clear();
    for (int i = 0;  i < RVn;  i++) {
      y = y + 1;
      RV_long.addValue(y);
      Serial.print("."); 
      delay(500);
    }
    yMean = round(RV_long.getAverage());
    Serial.println(yMean); 
  } else {
    delay(1000);
  }

  Serial.println(mode); 
  
}