File content as of revision 6:18ce87bf9df0:

#include "mbed.h"
#include "nRF24L01P.h"

BufferedSerial pc(USBTX, USBRX); // tx, rx

nRF24L01P my_nrf24l01p(D11, D12, D13, D8, D9, D7);    // mosi, miso, sck, csn, ce, irq

FileHandle *mbed::mbed_override_console(int fd)
{
    return &pc;
}

int main() {
    enum { TRANSFER_SIZE = 1 };

    char txData[TRANSFER_SIZE], rxData[TRANSFER_SIZE];
    int txDataCnt = 0;
    int rxDataCnt = 0;

    my_nrf24l01p.powerUp();

    // Display the (default) setup of the nRF24L01+ chip
    printf( "nRF24L01+ Frequency    : %d MHz\r\n",  my_nrf24l01p.getRfFrequency() );
    printf( "nRF24L01+ Output power : %d dBm\r\n",  my_nrf24l01p.getRfOutputPower() );
    printf( "nRF24L01+ Data Rate    : %d kbps\r\n", my_nrf24l01p.getAirDataRate() );
    printf( "nRF24L01+ TX Address   : 0x%010llX\r\n", my_nrf24l01p.getTxAddress() );
    printf( "nRF24L01+ RX Address   : 0x%010llX\r\n", my_nrf24l01p.getRxAddress() );

    printf( "Type keys to test transfers:\r\n");

    my_nrf24l01p.setTransferSize( TRANSFER_SIZE );
    my_nrf24l01p.setRfFrequency(NRF24L01P_MAX_RF_FREQUENCY);
    
    my_nrf24l01p.setReceiveMode();
    my_nrf24l01p.enable();

    while (1) {

        // If we've received anything over the host serial link...
        if ( pc.readable() ) {

            // ...add it to the transmit buffer
            pc.read(&txData[txDataCnt], TRANSFER_SIZE);
            txDataCnt++;

            // If the transmit buffer is full
            if ( txDataCnt >= sizeof( txData ) ) {

                // Send the transmitbuffer via the nRF24L01+
                my_nrf24l01p.write( NRF24L01P_PIPE_P0, txData, txDataCnt );

                txDataCnt = 0;
            }
        }

        // If we've received anything in the nRF24L01+...
        if ( my_nrf24l01p.readable() ) {

            // ...read the data into the receive buffer
            rxDataCnt = my_nrf24l01p.read( NRF24L01P_PIPE_P0, rxData, sizeof( rxData ) );

            // Display the receive buffer contents via the host serial link
            for ( int i = 0; rxDataCnt > 0; rxDataCnt--, i++ ) {

                pc.write(&rxData[i], sizeof( rxData ));
            }
        }
    }
}