This is the first time I'm putting anything here. I also have been developing a C based library for one of the NRF24L01 (no plus) devices.. I used a Stellaris Launchpad to interface with the chip. Eventhough most of the functionality work correctly I saw the CD (Carrier Detect) is not functioning properly. Once it is high it is always high. To make it low I had to flush the RX buffer. It is really strange. I bought my sensors from e-Bay. So they must be clones :D. Can someone try this CD thing and see whether it is working properly?