src/can-signals.cpp

   1 /*
   2  * Copyright (C) 2015, 2016 "IoT.bzh"
   3  * Author "Romain Forlot" <romain.forlot@iot.bzh>
   4  *
   5  * Licensed under the Apache License, Version 2.0 (the "License");
   6  * you may not use this file except in compliance with the License.
   7  * You may obtain a copy of the License at
   8  *
   9  *       http://www.apache.org/licenses/LICENSE-2.0
  10  *
  11  * Unless required by applicable law or agreed to in writing, software
  12  * distributed under the License is distributed on an "AS IS" BASIS,
  13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  14  * See the License for the specific language governing permissions and
  15  * limitations under the License.
  16  */
  17
  18 #include "can-signals.hpp"
  19
  20 #include <fnmatch.h>
  21
  22 #include "signals.hpp"
  23 #include "obd2-signals.hpp"
  24 #include "can-decoder.hpp"
  25 #include "low-can-binding.hpp"
  26
  27 std::vector<std::vector<CanMessageDefinition>> CAN_MESSAGES = {
  28         {
  29                 {0x620, CanMessageFormat::STANDARD, {10, 0, nullptr}, false, (uint8_t)NULL},
  30                 {0x442, CanMessageFormat::STANDARD, {10, 0, nullptr}, false, (uint8_t)NULL},
  31         },
  32 };
  33
  34 /**
  35  * @brief Dumb SIGNALS array. It is composed by CanMessageSet
  36  * SIGNALS[MESSAGE_SET_ID][CanSignal]
  37  */
  38 std::vector<std::vector<CanSignal>> SIGNALS = {
  39         {
  40                 {&(CAN_MESSAGES[MESSAGE_SET_ID][0]), "can.driver_door.open", 2, 4, 1.000000, 0.000000, 0.000000, 0.000000, {10, 0, nullptr}, false, true, nullptr, 0, false, decoder_t::booleanDecoder, nullptr, false, 0.0},
  41                 {&(CAN_MESSAGES[MESSAGE_SET_ID][1]), "can.driver_door.close", 0, 4, 1.000000, 0.000000, 0.000000, 0.000000, {10, 0, nullptr}, false, true, nullptr, 0, false, decoder_t::booleanDecoder, nullptr, false, 0.0}
  42         },
  43 };
  44
  45 /**
  46  * @brief Can signal event map making access to afb_event
  47  * externaly to an openxc existing structure.
  48  *
  49  * @desc Event map is making relation between CanSignal generic name
  50  * and the afb_event struct used by application framework to pushed
  51  * to the subscriber.
  52  */
  53 std::map<std::string, struct afb_event> subscribed_signals;
  54
  55 /**
  56 * @brief Mutex allowing safe manipulation on subscribed_signals map.
  57 * @desc To ensure that the map object isn't modified when we read it, you
  58 *  have to set this mutex before use subscribed_signals map object.
  59 */
  60 std::mutex subscribed_signals_mutex;
  61
  62 std::mutex& get_subscribed_signals_mutex()
  63 {
  64         return subscribed_signals_mutex;
  65 }
  66
  67 std::map<std::string, struct afb_event>& get_subscribed_signals()
  68 {
  69         return subscribed_signals;
  70 }
  71
  72 std::vector<CanSignal>& get_can_signals()
  73 {
  74         return SIGNALS[MESSAGE_SET_ID];
  75 }
  76
  77 size_t getSignalCount()
  78 {
  79         return SIGNALS[MESSAGE_SET_ID].size();
  80 }
  81
  82 uint32_t get_signal_id(const CanSignal& sig)
  83 {
  84         return sig.message->id;
  85 }
  86
  87 /**
  88  * @fn std::vector<std::string> find_signals(const openxc_DynamicField &key)
  89  * @brief return signals name found searching through CAN_signals and OBD2 pid
  90  *
  91  * @param[in] const openxc_DynamicField : can contain numeric or string value in order to search against
  92  *   can signals or obd2 signals name.
  93  *
  94  * @return std::vector<std::string> Vector of signals name found.
  95  */
  96 void find_can_signals(const openxc_DynamicField& key, std::vector<CanSignal*>& found_signals)
  97 {
  98         switch(key.type)
  99         {
 100                 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
 101                         lookup_signals_by_name(key.string_value, get_can_signals(), found_signals);
 102                         break;
 103                 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
 104                         lookup_signals_by_id(key.numeric_value, get_can_signals(), found_signals);
 105                         break;
 106                 default:
 107                         ERROR(binder_interface, "find_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
 108                         break;
 109         }
 110         DEBUG(binder_interface, "Found %d signal(s)", (int)found_signals.size());
 111 }