BNF Future Long or Short?

I am seeing Strong RSI Divergence on BNF NIFTY Fut 15 mins and 30 mins chart but its not giving conformation on Daily chart , so I am not bareish and wait for a perfect deep to buy Nifty again. NBF Fut may test 1 support level (Intraday support) 27570 to 27550. So once it will come or support must buy.