File content as of revision 0:a51a6e7da590:

/**
 * @file main.cpp (nRF24L01P_Hello_World)
 *
 * @author Owen Edwards
 *
 * @section LICENSE
 *
 * Copyright (c) 2010 Owen Edwards
 *
 *    This program is free software: you can redistribute it and/or modify
 *    it under the terms of the GNU General Public License as published by
 *    the Free Software Foundation, either version 3 of the License, or
 *    (at your option) any later version.
 *
 *    This program is distributed in the hope that it will be useful,
 *    but WITHOUT ANY WARRANTY; without even the implied warranty of
 *    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 *    GNU General Public License for more details.
 *
 *    You should have received a copy of the GNU General Public License
 *    along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 * The above copyright notice and this permission notice shall be included in
 * all copies or substantial portions of the Software.
 *
 * @section DESCRIPTION
 *
 * Demo the nRF24L01+ Library
 *
 * Datasheet:
 *
 * http://www.nordicsemi.no/files/Product/data_sheet/nRF24L01P_Product_Specification_1_0.pdf
 */

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

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

nRF24L01P my_nrf24l01p(p5, p6, p7, p8, p9, p10);    // mosi, miso, sck, csn, ce, irq

DigitalOut myled1(LED1);
DigitalOut myled2(LED2);

int main() {

//
// The nRF24L01+ supports transfers from 1 to 32 bytes, but Sparkfun's
//  "Nordic Serial Interface Board" (http://www.sparkfun.com/products/9019)
//  only handles 4 byte transfers in the ATMega code.
//
#define TRANSFER_SIZE   4

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

    my_nrf24l01p.powerUp();

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

    pc.printf( "Type keys to test transfers:\r\n  (transfers are grouped into %d characters)\r\n", TRANSFER_SIZE );

    my_nrf24l01p.setTransferSize( TRANSFER_SIZE );

    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
            //
            txData[txDataCnt++] = pc.getc();

            //
            // 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;

            }

            //
            // Toggle LED1 (to help debug Host -> nRF24L01+ communication)
            //
            myled1 = !myled1;

        }

        //
        // 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.putc( rxData[i] );

            }

            //
            // Toggle LED2 (to help debug nRF24L01+ -> Host communication)
            //
            myled2 = !myled2;

        }
    }
}