src/can_decode_message.cpp

   1 /*
   2  * Copyright (C) 2015, 2016 "IoT.bzh"
   3  * Author "Romain Forlot" <romain.forlot@iot.bzh>
   4  * Author "Loic Collignon" <loic.collignon@iot.bzh>
   5  *
   6  * Licensed under the Apache License, Version 2.0 (the "License");
   7  * you may not use this file except in compliance with the License.
   8  * You may obtain a copy of the License at
   9  *
  10  *       http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  * Unless required by applicable law or agreed to in writing, software
  13  * distributed under the License is distributed on an "AS IS" BASIS,
  14  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  * See the License for the specific language governing permissions and
  16  * limitations under the License.
  17  */
  18
  19 #include <linux/can.h>
  20 #include <linux/can/raw.h>
  21 #include <queue>
  22 #include <sys/timeb.h>
  23
  24 #include <afb/afb-binding.h>
  25
  26 #include "can-utils.hpp"
  27 #include "can-decoder.hpp"
  28 #include "openxc.pb.h"
  29 #include "openxc-utils.hpp"
  30
  31 void can_decode_message(can_bus_t &can_bus)
  32 {
  33         can_message_t can_message;
  34         std:vector <CanSignal> signals;
  35         std:vector <CanSignal>::iterator signals_i;
  36         openxc_VehicleMessage vehicle_message;
  37         openxc_DynamicField search_key, ret;
  38         bool send = true;
  39
  40         decoder_t decoder();
  41
  42         while(true)
  43         {
  44                 if(can_message = can_bus.next_can_message())
  45                 {
  46                         /* First we have to found which CanSignal is */
  47                         search_key = build_DynamicField(openxc_DynamicField_Type::openxc_DynamicField_Type_NUM, (double)can_message.get_id())
  48
  49                         signals = find_can_signals(search_key);
  50
  51                         /* Decoding the message ! Don't kill the messenger ! */
  52                         for(const auto& sig : signals)
  53                         {
  54                                 subscribed_signals_i = subscribed_signals.find(sig.genericName);
  55
  56                                 if(subscribed_signals_i != subscribed_signals.end() &&
  57                                         afb_event_is_valid(subscribed_signals_i->second))
  58                                 {
  59                                         ret = decoder.decodeSignal(sig, can_message, getSignals(), &send);
  60
  61                                         s_message = build_SimpleMessage(sig.genericName, ret);
  62
  63                                         vehicle_message = build_VehicleMessage_with_SimpleMessage(openxc_DynamicField_Type::openxc_DynamicField_Type_NUM, s_message);
  64                                         vehicle_message_q.push(vehicle_message);
  65                                 }
  66                         }
  67                 }
  68         }
  69 }