Code for nrf24.

When I upload test code for nrf24 on atmega328 led on pin 13 blink or turn always on and test doesn't work. How I can fix it? Please help me.

Read the forum guide in the sticky post.

I don't know what your code is doing because you did not post it, but this thread Simple nRF24 may help as it has some simple programs for nRF24