low-can-binding/can/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 <fnmatch.h>
  19
  20 #include "can-signals.hpp"
  21
  22 #include "../binding/application.hpp"
  23 #include "../utils/signals.hpp"
  24 #include "can-decoder.hpp"
  25 #include "can-message.hpp"
  26 #include "can-bus.hpp"
  27 #include "../diagnostic/diagnostic-message.hpp"
  28 #include "canutil/write.h"
  29
  30 std::string can_signal_t::prefix_ = "messages";
  31
  32 can_signal_t::can_signal_t(
  33         std::string generic_name,
  34         uint8_t bit_position,
  35         uint8_t bit_size,
  36         float factor,
  37         float offset,
  38         float min_value,
  39         float max_value,
  40         frequency_clock_t frequency,
  41         bool send_same,
  42         bool force_send_changed,
  43         std::map<uint8_t, std::string> states,
  44         bool writable,
  45         signal_decoder decoder,
  46         signal_encoder encoder,
  47         bool received)
  48         : parent_{nullptr},
  49          generic_name_{ generic_name }
  50         , bit_position_{ bit_position }
  51         , bit_size_{ bit_size }
  52         , factor_{ factor }
  53         , offset_{ offset }
  54         , min_value_{min_value}
  55         , max_value_{max_value}
  56         , frequency_{frequency}
  57         , send_same_{send_same}
  58         , force_send_changed_{force_send_changed}
  59         , states_{states}
  60         , writable_{writable}
  61         , decoder_{decoder}
  62         , encoder_{encoder}
  63         , received_{received}
  64         , last_value_{.0f}
  65 {}
  66
  67 can_message_definition_t* can_signal_t::get_message() const
  68 {
  69         return parent_;
  70 }
  71
  72 const std::string can_signal_t::get_generic_name() const
  73 {
  74         return generic_name_;
  75 }
  76
  77 const std::string can_signal_t::get_name() const
  78 {
  79         return prefix_ + "." + generic_name_;
  80 }
  81
  82 const std::string can_signal_t::get_prefix() const
  83 {
  84         return prefix_;
  85 }
  86
  87 uint8_t can_signal_t::get_bit_position() const
  88 {
  89         return bit_position_;
  90 }
  91
  92 uint8_t can_signal_t::get_bit_size() const
  93 {
  94         return bit_size_;
  95 }
  96
  97 float can_signal_t::get_factor() const
  98 {
  99         return factor_;
 100 }
 101
 102 float can_signal_t::get_offset() const
 103 {
 104         return offset_;
 105 }
 106
 107 float can_signal_t::get_min_value() const
 108 {
 109         return min_value_;
 110 }
 111
 112 float can_signal_t::get_max_value() const
 113 {
 114         return max_value_;
 115 }
 116
 117 frequency_clock_t& can_signal_t::get_frequency()
 118 {
 119         return frequency_;
 120 }
 121
 122 bool can_signal_t::get_send_same() const
 123 {
 124         return send_same_;
 125 }
 126
 127 bool can_signal_t::get_force_send_changed() const
 128 {
 129         return force_send_changed_;
 130 }
 131
 132 const std::map<uint8_t, std::string>& can_signal_t::get_states() const
 133 {
 134         return states_;
 135 }
 136
 137 const std::string can_signal_t::get_states(uint8_t value)
 138 {
 139         if (value < states_.size())
 140                 return states_[value];
 141         return std::string();
 142 }
 143
 144 uint64_t can_signal_t::get_states(const std::string& value) const
 145 {
 146         uint64_t ret = -1;
 147         for( const auto& state: states_)
 148         {
 149                 if(state.second == value)
 150                 {
 151                         ret = (uint64_t)state.first;
 152                         break;
 153                 }
 154         }
 155         return ret;
 156 }
 157
 158 size_t can_signal_t::get_state_count() const
 159 {
 160         return states_.size();
 161 }
 162
 163 bool can_signal_t::get_writable() const
 164 {
 165         return writable_;
 166 }
 167
 168 signal_decoder& can_signal_t::get_decoder()
 169 {
 170         return decoder_;
 171 }
 172
 173 signal_encoder& can_signal_t::get_encoder()
 174 {
 175         return encoder_;
 176 }
 177
 178 bool can_signal_t::get_received() const
 179 {
 180         return received_;
 181 }
 182
 183 float can_signal_t::get_last_value() const
 184 {
 185         return last_value_;
 186 }
 187
 188 std::pair<float, uint64_t> can_signal_t::get_last_value_with_timestamp() const
 189 {
 190         return std::make_pair(last_value_, frequency_.get_last_tick());
 191 }
 192
 193 void can_signal_t::set_parent(can_message_definition_t* parent)
 194 {
 195         parent_ = parent;
 196 }
 197
 198 void can_signal_t::set_prefix(std::string val)
 199 {
 200         prefix_ = val;
 201 }
 202
 203 void can_signal_t::set_received(bool r)
 204 {
 205         received_ = r;
 206 }
 207
 208 void can_signal_t::set_last_value(float val)
 209 {
 210         last_value_ = val;
 211 }
 212
 213 void can_signal_t::set_timestamp(uint64_t timestamp)
 214 {
 215         frequency_.tick(timestamp);
 216 }
 217