go3mon:
I attached too an OLED display because I want read in real time Humidity and Temperature but data need to be stored on file ONLY using a delay of 10minutes.
What you are saying is not clear but by realtime, I assume you mean more frequently, say in a one second loop. You just need to enter a count condition in your loop whereby after 600 you send data to SD and reset the counter to zero. This will mean just that current data is recorded. If you want all the data sent to SD, I guess you store it in an array and then dump it after ten minutes.