!7

sclass Uptime > DynBigNumber {
  transient long upSince;
  
  start {
    setDescription("UPTIME (HH:MM)");
    upSince = now()-oshi_systemUptime()*1000;
    doEveryAndNow(60.0, r actualUpdate);
  }
  
  void actualUpdate {
    setValue(formatHoursColonMinutes(now()-upSince));
  }
}