Mbed OS Reference | AT_ControlPlane

 /*
  * Copyright (c) 2019, Arm Limited and affiliates.
  * SPDX-License-Identifier: Apache-2.0
  *
  * Licensed 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.
  */
 
 #include "CellularList.h"
 #include "netsocket/ControlPlane_netif.h"
 #include "ATHandler.h"
 #include "AT_CellularDevice.h"
 
 namespace mbed {
 
 class AT_ControlPlane_netif: public ControlPlane_netif {
 public:
     AT_ControlPlane_netif(ATHandler &at, int cid, AT_CellularDevice &device);
     virtual ~AT_ControlPlane_netif();
 
 protected:
 // ControlPlane_netif
 
     /* Sends data using +CSODCP specified in
      *  3GPP 27007 10.1.43: Sending of originating data via the control plane
      */
     virtual nsapi_size_or_error_t send(const void *cpdata, nsapi_size_t cpdata_length);
 
     /* Receives data using +CRTDCP specified in
      *  3GPP 27007 10.1.44: Reporting of terminating data via the control plane
      */
     virtual nsapi_size_or_error_t recv(void *cpdata, nsapi_size_t cpdata_length);
 
     virtual void data_received();
     virtual void attach(void (*callback)(void *), void *data);
 
     // Id of the PDP context that enables the control plane data connection
     int _cid;
 
 private:
     struct packet_t {
         uint8_t *data;
         nsapi_size_t data_len;
         packet_t *next;
     };
     CellularList<packet_t> _packet_list;
     void (*_cb)(void *);
     void *_data;
     // Called on receiving URC: +CRTDCP
     void urc_cp_recv();
 
 protected:
     ATHandler &_at;
     AT_CellularDevice &_device;
 };
 
 } //mbed namespace
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