Please see this link, it says it waits for transmission to complete if we are sending any, and clears the buffered data came from other source.
If I'm wrong please enlighten me. 
Yes, pardon me about it. =(
This is a part of a huge program which I'm working on based on Swarm robotics.
In my program the count will become zero at some point which is independent of "interval" so till then it must receive.
So i cant make count = 0.
Till count becomes equal to zero it has to receive.