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 "can-decoder.hpp"
  23 #include "low-can-binding.hpp"
  24
  25 std::vector<std::vector<CanMessageDefinition>> CAN_MESSAGES = {
  26         {{0x620, CanMessageFormat::STANDARD, {10, 0, nullptr}, false, (uint8_t)NULL}},
  27 };
  28
  29 /**
  30  * @brief Dumb SIGNALS array. It is composed by CanMessageSet
  31  * SIGNALS[MESSAGE_SET_ID][CanSignal]
  32  */
  33 std::vector<std::vector<CanSignal>> SIGNALS = {
  34         {{&(CAN_MESSAGES[0][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, (float)NULL}},
  35 };
  36
  37 /**
  38  * @brief Can signal event map making access to afb_event
  39  * externaly to an openxc existing structure.
  40  *
  41  * @desc Event map is making relation between CanSignal generic name
  42  * and the afb_event struct used by application framework to pushed
  43  * to the subscriber.
  44  */
  45 std::map<std::string, struct afb_event> subscribed_signals;
  46
  47 /**
  48 * @brief Mutex allowing safe manipulation on subscribed_signals map.
  49 * @desc To ensure that the map object isn't modified when we read it, you
  50 *  have to set this mutex before use subscribed_signals map object.
  51 */
  52 std::mutex subscribed_signals_mutex;
  53
  54 std::mutex& get_subscribed_signals_mutex()
  55 {
  56         return subscribed_signals_mutex;
  57 }
  58
  59 std::map<std::string, struct afb_event>& get_subscribed_signals()
  60 {
  61         DEBUG(binder_interface, "Here are the first subscribed_signals: %s", subscribed_signals.begin()->first.c_str() );
  62         return subscribed_signals;
  63 }
  64
  65 const std::vector<CanSignal>& getSignals()
  66 {
  67         return SIGNALS[MESSAGE_SET_ID];
  68 }
  69
  70 size_t getSignalCount()
  71 {
  72         return SIGNALS[MESSAGE_SET_ID].size();
  73 }
  74
  75 std::vector<CanSignal> find_can_signals(const openxc_DynamicField &key)
  76 {
  77         std::vector<CanSignal> signals = {};
  78
  79         switch(key.type)
  80         {
  81                 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
  82                         for(const CanSignal& s : getSignals())
  83                         {
  84                                 if(fnmatch(key.string_value, s.genericName, FNM_CASEFOLD) == 0)
  85                                         signals.push_back(s);
  86                         }
  87                         break;
  88                 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
  89                         for(const CanSignal& s : getSignals())
  90                         {
  91                                 CanMessageDefinition *msg_def = s.message;
  92                                 if(msg_def->id == key.numeric_value)
  93                                         signals.push_back(s);
  94                         }
  95                         break;
  96                 default:
  97                         ERROR(binder_interface, "find_can_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
  98                         return signals;
  99                         break;
 100         }
 101         return signals;
 102 }
 103
 104 inline uint32_t get_CanSignal_id(const CanSignal& sig)
 105 {
 106         return sig.message->id;
 107 }