nuttx/drivers/wireless/ieee802154/xbee/xbee_mac.h

/****************************************************************************
 * drivers/wireless/ieee802154/xbee/xbee_mac.h
 *
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.  The
 * ASF licenses this file to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance with the
 * License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.  See the
 * License for the specific language governing permissions and limitations
 * under the License.
 *
 ****************************************************************************/

#ifndef __DRIVERS_WIRELESS_IEEE802154_XBEE_XBEE_MAC_H
#define __DRIVERS_WIRELESS_IEEE802154_XBEE_XBEE_MAC_H

/****************************************************************************
 * Included Files
 ****************************************************************************/

#include <nuttx/config.h>

#include <stdint.h>
#include <stdbool.h>

#include <nuttx/wqueue.h>
#include <nuttx/spi/spi.h>

#include <nuttx/wireless/ieee802154/xbee.h>
#include <nuttx/wireless/ieee802154/ieee802154_mac.h>

/****************************************************************************
 * Pre-processor Definitions
 ****************************************************************************/

/****************************************************************************
 * Public Types
 ****************************************************************************/

/* Callback operations to notify the next highest layer of various
 * asynchronous events, usually triggered by some previous request or
 * response invoked by the upper layer.
 */

struct xbee_maccb_s
{
  FAR struct xbee_maccb_s *flink;  /* Implements a singly linked list */
  uint8_t prio;                    /* RX frame callback priority */

  /* Callback for various MLME or MCPS service events.  Return value
   * represents whether the callback accepts the primitive. >= 0 means the
   * callback has accepted the primitive and is responsible for calling
   * ieee802154_primitive_free(). In the case of DATA.indication primitive,
   * only one callback can accept the frame. The callbacks are stored in
   * order of receiver priority defined by the 'prio' field above. All other
   * notifications are offered to all callbacks and all can accept and free
   * separately since the primitive will not be freed until the nclients
   * count reaches 0.
   */

  CODE int (*notify)(FAR struct xbee_maccb_s *maccb,
                     FAR struct ieee802154_primitive_s *primitive);
};

/****************************************************************************
 * Public Data
 ****************************************************************************/

/****************************************************************************
 * Inline Functions
 ****************************************************************************/

/****************************************************************************
 * Public Function Prototypes
 ****************************************************************************/

/****************************************************************************
 * Name: xbee_bind
 *
 * Description:
 *   Bind the XBee callback table to the MAC state.
 *
 * Input Parameters:
 *   xbee - Reference to the XBee driver state structure
 *   cb  -  XBee callback operations
 *
 * Returned Value:
 *   OK on success; Negated errno on failure.
 *
 ****************************************************************************/

int xbee_bind(XBEEHANDLE xbee, FAR struct xbee_maccb_s *cb);

/****************************************************************************
 * Name: xbee_ioctl
 *
 * Description:
 *   Handle MAC and radio IOCTL commands directed to the XBee device.
 *
 * Input Parameters:
 *   mac - Reference to the Xbee driver state structure
 *   cmd - The IOCTL command
 *   arg - The argument for the IOCTL command
 *
 * Returned Value:
 *   OK on success; Negated errno on failure.
 *
 ****************************************************************************/

int xbee_ioctl(XBEEHANDLE xbee, int cmd, unsigned long arg);

/****************************************************************************
 * MAC Interface Operations
 ****************************************************************************/

/****************************************************************************
 * Name: xbee_get_mhrlen
 *
 * Description:
 *   Calculate the MAC header length given the frame meta-data. For the
 *   XBee, we use the header to store the entire API frame for the TX
 *   request. The size we need is fixed based on the address mode we are
 *   using as it changes which API frame we need to issue.
 *
 ****************************************************************************/

int xbee_get_mhrlen(XBEEHANDLE xbee,
                    FAR const struct ieee802154_frame_meta_s *meta);

/****************************************************************************
 * Name: xbee_req_data
 *
 * Description:
 *   The MCPS-DATA.request primitive requests the transfer of a data SPDU
 *   (i.e., MSDU) from a local SSCS entity to a single peer SSCS entity.
 *   Confirmation is returned via the
 *   struct xbee_maccb_s->conf_data callback.
 *
 ****************************************************************************/

int xbee_req_data(XBEEHANDLE xbee,
                  FAR const struct ieee802154_frame_meta_s *meta,
                  FAR struct iob_s *frame);

/****************************************************************************
 * Name: xbee_req_get
 *
 * Description:
 *   The MLME-GET.request primitive requests information about a given PIB
 *   attribute.
 *
 *   NOTE: The standard specifies that the attribute value should be returned
 *   via the asynchronous MLME-GET.confirm primitive.  However, in our
 *   implementation, we synchronously return the value immediately.Therefore,
 *   we merge the functionality of the MLME-GET.request and MLME-GET.confirm
 *   primitives together.
 *
 ****************************************************************************/

int xbee_req_get(XBEEHANDLE xbee, enum ieee802154_attr_e attr,
                 FAR union ieee802154_attr_u *attrval);

/****************************************************************************
 * Name: xbee_req_set
 *
 * Description:
 *   The MLME-SET.request primitive attempts to write the given value to the
 *   indicated MAC PIB attribute.
 *
 *   NOTE:
 *   The standard specifies that confirmation should be indicated via the
 *   asynchronous MLME-SET.confirm primitive.  However, in our implementation
 *   we synchronously return the status from the request. Therefore, we do
 *   merge the functionality of the MLME-SET.request and MLME-SET.confirm
 *   primitives together.
 *
 ****************************************************************************/

int xbee_req_set(XBEEHANDLE xbee, enum ieee802154_attr_e attr,
                 FAR const union ieee802154_attr_u *attrval);

/****************************************************************************
 * Name: xbee_req_start
 *
 * Description:
 *   The MLME-START.request primitive makes a request for the device to start
 *   acting as a coordinator.  The XBee modules do not support beacon-enabled
 *   networking!
 *
 ****************************************************************************/

int xbee_req_start(XBEEHANDLE xbee, FAR struct ieee802154_start_req_s *req);

/****************************************************************************
 * Name: xbee_req_associate
 *
 * Description:
 *   The MLME-ASSOCIATE.request primitive allows a device to request an
 *   association with a coordinator.
 *
 *   On receipt of the MLME-ASSOCIATE.request primitive, the MLME of an
 *   unassociated device first updates the appropriate PHY and MAC PIB
 *   attributes, as described in 5.1.3.1, and then generates an association
 *   request command, as defined in 5.3.1 [1] pg.80
 *
 ****************************************************************************/

int xbee_req_associate(XBEEHANDLE xbee,
                       FAR struct ieee802154_assoc_req_s *req);

/****************************************************************************
 * Name: xbee_req_reset
 *
 * Description:
 *   The MLME-RESET.request primitive allows the next higher layer to request
 *   that the MLME performs a reset operation.
 *
 * Input Parameters:
 *   xbee         - Handle to the XBee instance
 *   resetattr    - Whether or not to reset the MAC PIB attributes to
 *                  defaults
 *
 ****************************************************************************/

int xbee_req_reset(XBEEHANDLE xbee, bool resetattr);

#endif /* __DRIVERS_WIRELESS_IEEE802154_XBEE_XBEE_MAC_H */