Look here Simple nRF24L01+ 2.4GHz transceiver demo - #30 by Robin2 post #30 . There is a test to see if thr mcu can communicate with the Nrf24L01 at the register level over SPI. That may help isolate the problem.
Look here Simple nRF24L01+ 2.4GHz transceiver demo - #30 by Robin2 post #30 . There is a test to see if thr mcu can communicate with the Nrf24L01 at the register level over SPI. That may help isolate the problem.