How can I use one nrf24l01+ as transceiver at a time ?

[KETAN]

I am using two nrf24l01+ at two ends & i am able to communicate between both but its a simplex communiacation means I am transmitting nrf code from A end & B end receives that code properly . But now I want to transmit nrf code from B end & A end need to receive nrf code. ? So how sholud I do coding for this ? If anybody has solution please help me. If possible then provide me code also.

[KETAN]

I am using ATmega32. When I am using transmit_payload() from end B, it is not working from any end. Means communication can not take place. Should change in my nrf24L01_init(). For that please go through my code. Transceiver.rar