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  * @fn std::vector<CanSignal>& get_can_signals()
  47  *
  48  * @return A reference to a vector of signals
  49  */
  50 std::vector<CanSignal>& get_can_signals()
  51 {
  52         return SIGNALS[MESSAGE_SET_ID];
  53 }
  54
  55 /**
  56  * @fn size_t getSignalCount()
  57  *
  58  * @return the length of the array returned by get_can_signals().
  59  */
  60 size_t getSignalCount()
  61 {
  62         return SIGNALS[MESSAGE_SET_ID].size();
  63 }
  64
  65 /**
  66  * @brief Retrieve can arbitration id of a given CanSignal
  67  *
  68  * @param[in] CanSignal& - a const reference to a CanSignal
  69  *
  70  * @return uint32_t - unsigned integer representing the arbitration id.
  71  */
  72 uint32_t get_signal_id(const CanSignal& sig)
  73 {
  74         return sig.message->id;
  75 }
  76
  77 /**
  78  * @fn void find_can_signals(const openxc_DynamicField& key, std::vector<CanSignal*>& found_signals)
  79  * @brief return signals name found searching through CAN_signals and OBD2 pid
  80  *
  81  * @param[in] const openxc_DynamicField : can contain numeric or string value in order to search against
  82  *   can signals or obd2 signals name.
  83  * @param[out] std::vector<CanSignal*>& found_signals : provided vector to fill with ponter to signals matched.
  84  *
  85  */
  86 void find_can_signals(const openxc_DynamicField& key, std::vector<CanSignal*>& found_signals)
  87 {
  88         switch(key.type)
  89         {
  90                 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
  91                         lookup_signals_by_name(key.string_value, get_can_signals(), found_signals);
  92                         break;
  93                 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
  94                         lookup_signals_by_id(key.numeric_value, get_can_signals(), found_signals);
  95                         break;
  96                 default:
  97                         ERROR(binder_interface, "find_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
  98                         break;
  99         }
 100         DEBUG(binder_interface, "Found %d signal(s)", (int)found_signals.size());
 101 }