The library is to interface NRF24L01 modules with micro-controllers. The library is written in C to make sure the code size is less.

[2015-04-03]: Release V1.01 Provides support to all the functions except Dynamic Payload and Auto Ack payload.

[2015-04-13]: Release V1.02 Provided support for Dynamic Payload and Ack Payload features

If you change the library, and if you are willing please send me the SPI library so that I can merge that library to the main code. Or send me pull request. Please use a separate #define to separate the changes.

To change the SPI library you need to change the following functions.

NRF24L01_Init
NRF24L01_RegisterWrite_8
NRF24L01_RegisterWrite_Multi
NRF24L01_RegisterRead_8
NRF24L01_RegisterRead_Multi
NRF24L01_SendCommand
NRF24L01_SendRcvCommand

To change the processor you need to change following functions,

NRF24L01_Init
NRF24L01_InterruptInit
_NRF24L01_CELow
_NRF24L01_CEHigh
_NRF24L01_CSNLow
_NRF24L01_CSNHigh

Processor has four SSI modules that can be configured as Freescale SPI to communicate with the NRF24L01 modules.

Data transfer path:

Processor ---> SSI module ---> NRF24L01

SSI modules can be configured in several ways. For instance SSI1 can be configured to use GPIOF or GPIOD.