2 * Copyright (C) 2015, 2016, 2017 "IoT.bzh"
3 * Author "Romain Forlot" <romain.forlot@iot.bzh>
4 * Author "Loïc Collignon" <loic.collignon@iot.bzh>
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
10 * http://www.apache.org/licenses/LICENSE-2.0
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.
24 #include <linux/can.h>
25 #include <condition_variable>
27 #include "openxc.pb.h"
28 #include "can-message.hpp"
29 #include "../utils/config-parser.hpp"
30 #include "../binding/low-can-hat.hpp"
32 // TODO actual max is 32 but dropped to 24 for memory considerations
33 #define MAX_ACCEPTANCE_FILTERS 24
34 // TODO this takes up a ton of memory
35 #define MAX_DYNAMIC_MESSAGE_COUNT 12
37 #define CAN_ACTIVE_TIMEOUT_S 30
39 class diagnostic_manager_t;
41 /// @brief Object used to handle decoding and manage event queue to be pushed.
43 /// This object is also used to initialize can_bus_dev_t object after reading
44 /// json conf file describing the CAN devices to use. Thus, those object will read
45 /// on the device the CAN frame and push them into the can_bus_t can_message_q_ queue.
47 /// That queue will be later used to be decoded and pushed to subscribers.
51 utils::config_parser_t conf_file_; ///< configuration file handle used to initialize can_bus_dev_t objects.
53 int process_can_signals(const can_message_t& can_message);
54 int process_diagnostic_signals(diagnostic_manager_t& manager, const can_message_t& can_message);
56 void can_decode_message();
57 std::thread th_decoding_; ///< thread that'll handle decoding a can frame
58 bool is_decoding_ = false; ///< boolean member controling thread while loop
60 void can_event_push();
61 std::thread th_pushing_; ///< thread that'll handle pushing decoded can frame to subscribers
62 bool is_pushing_ = false; ///< boolean member controling thread while loop
64 std::condition_variable new_can_message_cv_; ///< condition_variable use to wait until there is a new CAN message to read
65 std::mutex can_message_mutex_; ///< mutex protecting the can_message_q_ queue.
66 std::queue <can_message_t> can_message_q_; ///< queue that'll store can_message_t to decoded
68 std::condition_variable new_decoded_can_message_; ///< condition_variable use to wait until there is a new vehicle message to read from the queue vehicle_message_q_
69 std::mutex decoded_can_message_mutex_; ///< mutex protecting the vehicle_message_q_ queue.
70 std::queue <openxc_VehicleMessage> vehicle_message_q_; ///< queue that'll store openxc_VehicleMessage to pushed
72 std::vector<std::pair<std::string, std::string> > can_devices_;
74 can_bus_t(utils::config_parser_t conf_file);
75 can_bus_t(can_bus_t&&);
77 void set_can_devices();
78 int get_can_device_index(const std::string& bus_name) const;
79 const std::string get_can_device_name(const std::string& id_name) const;
84 can_message_t next_can_message();
85 void push_new_can_message(const can_message_t& can_msg);
86 std::mutex& get_can_message_mutex();
87 std::condition_variable& get_new_can_message_cv();
89 openxc_VehicleMessage next_vehicle_message();
90 void push_new_vehicle_message(const openxc_VehicleMessage& v_msg);