void Reflow_Init(void) {
  profile[0].preheat_rate = 1;
  profile[0].preheat_temp = 130;
  profile[0].preheat_time = 20;
  profile[0].reflow_rate = 0.5;
  profile[0].reflow_temp = 235;
  profile[0].reflow_time = 40;

  process.profile = profile[0];
  process.phase = 0;
  process.timer = 0;
  process.countdown = 5;
  process.temp = 0;
  sprintf(process.title,"Ready");
}

void Reflow_Task(void) {
  switch (process.phase) {
    case 0:  // standby
      if (process.countdown > 0) {
        process.countdown--;
        if (process.countdown == 0) {
          process.phase = 1;
          sprintf(process.title,"1/4 PreHeat");
          process.temp = process.profile.preheat_temp;
          process.countdown = 10;
        }
      }
      break;
    case 1:  // preheat aufheizen
      process.timer++;
      if (process.countdown > 0) {
        process.countdown--;
        if (process.countdown == 0) {
          process.phase = 2;
          sprintf(process.title,"2/4 PreHeat");
          process.countdown = 10;
        }
      }
      break;
    case 2:  // preheat temp halten
      process.timer++;
      if (process.countdown > 0) {
        process.countdown--;
        if (process.countdown == 0) {
          process.phase = 3;
          sprintf(process.title,"3/4 Reflow");
          process.temp = process.profile.reflow_temp;
          process.countdown = 10;
        }
      }
      break;
    case 3:  // reflow aufheizen
      process.timer++;
      if (process.countdown > 0) {
        process.countdown--;
        if (process.countdown == 0) {
          process.phase = 4;
          sprintf(process.title,"4/4 Reflow");
          process.countdown = 10;
        }
      }
      break;
    case 4:  // reflow temp halten
      process.timer++;
      if (process.countdown > 0) {
        process.countdown--;
        if (process.countdown == 0) {
          process.phase = 5;
          sprintf(process.title,"Cooldown");
          process.temp = 0;
          process.countdown = 10;
          tone(buzzer, 2000, 1000);
        }
      }
      break;
    case 5:  // auskühlen
      if (process.countdown > 0) {
        process.countdown--;
        if (process.countdown == 0) {
          process.phase = 0;
          process.timer = 0;
          sprintf(process.title,"Ready");
          process.countdown = 0;
        }
      }
      break;
    default:
      process.phase = 0;
  }
}