unsigned long present, time_end, minute = 1000;

int mash_temp[4], mash_time[4] = {0, 3, 2, 1}, hop_time[5], boil_time;
int step;



void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Serial.println("Hello, ESP32!");
  present = millis();
  step = 1;
}

void loop() {
  if (step == 1) {
    time_end = present + mash_time[1] * minute;
    if (millis() >= time_end) {
      Serial.println("time end 1!");
      step = 2;
      present = millis();
    }
  }
  if (step == 2) {
    time_end = present + mash_time[2] * minute;
    if (millis() >= time_end) {
      Serial.println("time end 2!");
      step = 3;
      present = millis();
    }
  }
  if (step == 3) {
    time_end = present + mash_time[3] * minute;
    if (millis() >= time_end) {
      Serial.println("time end 3!");
      step = 4;
      present = millis();
    }
  }
  if (step == 4) {
    Serial.println("heat for sparge!");
    while (1 == 1) {}
  }

}

void boiling() {

}