text: /****************************************************************************
   * apps/wireless/ieee802154/i8sak/i8sak_poll.c
   * IEEE 802.15.4 Swiss Army Knife
   *
   *   Copyright (C) 2014-2015, 2017 Gregory Nutt. All rights reserved.
   *   Copyright (C) 2014-2015 Sebastien Lorquet. All rights reserved.
   *   Copyright (C) 2017 Verge Inc. All rights reserved.
   *
   *   Author: Sebastien Lorquet <sebastien@lorquet.fr>
   *   Author: Anthony Merlino <anthony@vergeaero.com>
   *   Author: Gregory Nutt <gnutt@nuttx.org>
   *
   * Redistribution and use in source and binary forms, with or without
   * modification, are permitted provided that the following conditions
   * are met:
   *
   * 1. Redistributions of source code must retain the above copyright
   *    notice, this list of conditions and the following disclaimer.
   * 2. Redistributions in binary form must reproduce the above copyright
   *    notice, this list of conditions and the following disclaimer in
   *    the documentation and/or other materials provided with the
   *    distribution.
   * 3. Neither the name NuttX nor the names of its contributors may be
   *    used to endorse or promote products derived from this software
   *    without specific prior written permission.
   *
   * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
   * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
   * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
   * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
   * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
   * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
   * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
   * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
   * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
   * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
   * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
   * POSSIBILITY OF SUCH DAMAGE.
   *
   ****************************************************************************/
  
  /****************************************************************************
   * Included Files
   ****************************************************************************/
  
  #include <nuttx/config.h>
  #include <stdio.h>
  #include <stdlib.h>
  #include <string.h>
  #include <errno.h>
  #include <fcntl.h>
  #include <sys/ioctl.h>
  #include <nuttx/fs/ioctl.h>
  
  #include "i8sak.h"
  
  #include <nuttx/wireless/ieee802154/ieee802154_mac.h>
  #include "wireless/ieee802154.h"
  
  /****************************************************************************
   * Private Function Prototypes
   ****************************************************************************/
  
  static void poll_eventcb(FAR struct ieee802154_primitive_s *primitive,
                           FAR void *arg);
  
  /****************************************************************************
   * Public Functions
   ****************************************************************************/
  
  /****************************************************************************
   * Name : i8sak_poll_cmd
   *
   * Description :
   *   Try and extract data from the coordinator
   ****************************************************************************/
  
  void i8sak_poll_cmd(FAR struct i8sak_s *i8sak, int argc, FAR char *argv[])
  {
    struct ieee802154_poll_req_s pollreq;
    struct i8sak_eventfilter_s eventfilter;
    int option;
    int fd = 0;
    int ret;
  
    while ((option = getopt(argc, argv, ":h")) != ERROR)
      {
        switch (option)
          {
            case 'h':
              fprintf(stderr, "Polls coordinator for data\n"
                      "Usage: %s [-h]\n"
                      "    -h = this help menu\n"
                      , argv[0]);
  
              /* Must manually reset optind if we are going to exit early */
  
              optind = -1;
              return;
            case ':':
              fprintf(stderr, "ERROR: missing argument\n");
  
              /* Must manually reset optind if we are going to exit early */
  
              optind = -1;
              i8sak_cmd_error(i8sak); /* This exits for us */
  
            case '?':
              fprintf(stderr, "ERROR: unknown argument\n");
  
              /* Must manually reset optind if we are going to exit early */
  
              optind = -1;
              i8sak_cmd_error(i8sak); /* This exits for us */
          }
      }
  
    i8sak_requestdaemon(i8sak);
  
    /* Register new callback for receiving the association notifications */
  
    memset(&eventfilter, 0, sizeof(struct i8sak_eventfilter_s));
    eventfilter.confevents.poll = true;
  
    i8sak_eventlistener_addreceiver(i8sak, poll_eventcb, &eventfilter, true);
  
    memcpy(&pollreq.coordaddr, &i8sak->ep_addr,
           sizeof(struct ieee802154_addr_s));
  
    if (pollreq.coordaddr.mode == IEEE802154_ADDRMODE_SHORT)
      {
        printf("i8sak: Polling " PRINTF_FORMAT_SADDR(pollreq.coordaddr.saddr));
      }
    else
      {
        printf("i8sak: Polling " PRINTF_FORMAT_EADDR(pollreq.coordaddr.eaddr));
      }
  
    if (i8sak->mode == I8SAK_MODE_CHAR)
      {
        fd = open(i8sak->ifname, O_RDWR);
        if (fd < 0)
          {
            fprintf(stderr, "ERROR: cannot open %s, errno=%d\n",
                    i8sak->ifname, errno);
            i8sak_cmd_error(i8sak);
          }
  
        ieee802154_poll_req(fd, &pollreq);
      }
  #ifdef CONFIG_NET_6LOWPAN
    else if (i8sak->mode == I8SAK_MODE_NETIF)
      {
        fd = socket(PF_INET6, SOCK_DGRAM, 0);
        if (fd < 0)
          {
            fprintf(stderr, "ERROR: failed to open socket, errno=%d\n", errno);
            i8sak_cmd_error(i8sak);
          }
  
        sixlowpan_poll_req(fd, i8sak->ifname, &pollreq);
      }
  #endif
  
    close(fd);
  
    /* Wait here, the event listener will notify us if the correct event
     * occurs
     */
  
    ret = sem_wait(&i8sak->sigsem);
    if (ret != OK)
      {
        printf("i8sak: poll cancelled\n");
        i8sak_cmd_error(i8sak);
      }
  
    i8sak_releasedaemon(i8sak);
  }
  
  /****************************************************************************
   * Private Function
   ****************************************************************************/
  
  static void poll_eventcb(FAR struct ieee802154_primitive_s *primitive,
                           FAR void *arg)
  {
    FAR struct i8sak_s *i8sak = (FAR struct i8sak_s *)arg;
  
    if (primitive->u.pollconf.status == IEEE802154_STATUS_SUCCESS)
      {
        printf("i8sak: POLL.request succeeded\n");
      }
    else
      {
        printf("i8sak: POLL.request failed: %s\n",
               IEEE802154_STATUS_STRING[primitive->u.pollconf.status]);
      }
  
    sem_post(&i8sak->sigsem);
  }
  