text: /*
   * Author: Kiveisha Yevgeniy
   * Copyright (c) 2015-2016 Intel Corporation.
   *
   * Permission is hereby granted, free of charge, to any person obtaining
   * a copy of this software and associated documentation files (the
   * "Software"), to deal in the Software without restriction, including
   * without limitation the rights to use, copy, modify, merge, publish,
   * distribute, sublicense, and/or sell copies of the Software, and to
   * permit persons to whom the Software is furnished to do so, subject to
   * the following conditions:
   *
   * The above copyright notice and this permission notice shall be
   * included in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
   * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
   * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
   * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
   * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
   * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
   * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  #include <iostream>
  #include <signal.h>
  #include "rf22.hpp"
  
  bool amWorking = true;
  
  void
  sig_handler (int signo) {
      if (signo == SIGINT) {
          amWorking = false;
      }
  }
  //! [Interesting]
  int
  main (int argc, char ** argv) {
      // SPI bus 0, CS pin 10, INTR pin 2
      upm::RF22 rf22(0, 10, 2);
  
      if (!rf22.init()) {
          std::cout << "RF22 init failed" << std::endl;
          return 0x1;
      }
      
      uint8_t buf[RF22_MAX_MESSAGE_LEN];
      uint8_t len = sizeof(buf);
      
      signal (SIGINT, sig_handler);
      while (amWorking) {
          // rf22.waitAvailable();
          rf22.waitAvailableTimeout (500);
  
          // Should be a message for us now   
          if (rf22.recv(buf, &len)) {
              std::cout << "got request: " << (char*)buf << std::endl;
  
              // Send a reply
              uint8_t data[] = "And hello back to you";
              rf22.send(data, sizeof(data));
              rf22.waitPacketSent();
          } else {
              // Do whatever you need.
          }
      }
  
      std::cout << "Exit 'rfm22-server'" << std::endl;
      return 0;
  }
  //! [Interesting]
  