     if (temp < -31.0 || temp > 50)
         return 100; // treat it as an error.
 
+/*
     int temp_idx = 40 - (temp + 30.0)/2;
     if (temp_idx < 0) temp_idx = 0;
     if (temp_idx > 40) temp_idx = 40;

    time_format[1] = ret % 10 + ('0');

    if (ret != 0 && !full_update)
	goto end;

    // Update all date string - very little optimization gain


    time_format[4] = ret % 10 + ('0');

    if (ret != 0 && !full_update)
       goto end;

    // hour
    ret = rtc.getHour(tmp1, tmp2);
