src/obd2-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 "obd2-signals.hpp"
  19
  20 #include "signals.hpp"
  21
  22 const char *UNIT_NAMES[10] = {
  23         "POURCENT",
  24         "DEGREES_CELSIUS",
  25         "KPA",
  26         "RPM",
  27         "GRAMS_SEC",
  28         "SECONDS",
  29         "KM",
  30         "KM_H",
  31         "PA",
  32         "NM"
  33 };
  34
  35 /*
  36 * Pre-defined OBD-II PIDs to query for if supported by the vehicle.
  37 */
  38  std::vector<Obd2Pid> OBD2_PIDS = {
  39         { 0x04, "obd2.engine.load", 0, 100, POURCENT, 5,  false},
  40         { 0x05, "obd2.engine.coolant.temperature", -40, 215, DEGREES_CELSIUS, 1,  false},
  41         { 0x0a, "obd2.fuel.pressure", 0, 765, KPA, 1,  false},
  42         { 0x0b, "obd2.intake.manifold.pressure", 0, 255, KPA, 1,  false},
  43         { 0x0c, "obd2.engine.speed", 0, 16383, RPM, 5,  false},
  44         { 0x0d, "obd2.vehicle.speed", 0, 255, KM_H, 5,  false},
  45         { 0x0f, "obd2.intake.air.temperature", -40, 215, DEGREES_CELSIUS, 1,  false},
  46         { 0x10, "obd2.mass.airflow", 0, 655, GRAMS_SEC, 5,  false},
  47         { 0x11, "obd2.throttle.position", 0, 100, POURCENT, 5,  false},
  48         { 0x1f, "obd2.running.time", 0, 65535, SECONDS, 1,  false},
  49         { 0x2d, "obd2.EGR.error", -100, 99, POURCENT, 0,  false},
  50         { 0x2f, "obd2.fuel.level", 0, 100, POURCENT, 1,  false},
  51         { 0x33, "obd2.barometric.pressure", 0, 255, KPA, 1,  false},
  52         { 0x4c, "obd2.commanded.throttle.position", 0, 100, POURCENT, 1,  false},
  53         { 0x52, "obd2.ethanol.fuel.percentage", 0, 100, POURCENT, 1,  false},
  54         { 0x5a, "obd2.accelerator.pedal.position", 0, 100, POURCENT, 5,  false},
  55         { 0x5b, "obd2.hybrid.battery-pack.remaining.life", 0, 100, POURCENT, 5,  false},
  56         { 0x5c, "obd2.engine.oil.temperature",-40, 210, DEGREES_CELSIUS, 1,  false},
  57         { 0x63, "obd2.engine.torque", 0, 65535, NM, 1,  false}
  58 };
  59
  60 /**
  61  * @fn std::vector<std::string> find_signals(const openxc_DynamicField &key)
  62  * @brief return signals name found searching through CAN_signals and OBD2 pid
  63  *
  64  * @param[in] const openxc_DynamicField : can contain numeric or string value in order to search against
  65  *   can signals or obd2 signals name.
  66  *
  67  * @return std::vector<std::string> Vector of signals name found.
  68  */
  69 void find_signals(const openxc_DynamicField &key, std::vector<Obd2Pid*>& found_signals)
  70 {
  71         switch(key.type)
  72         {
  73                 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
  74                                 lookup_signals_by_name(key.string_value, get_obd2_signals(), found_signals);
  75                         break;
  76                 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
  77                                 lookup_signals_by_id(key.numeric_value, get_obd2_signals(), found_signals);
  78                         break;
  79                 default:
  80                         ERROR(binder_interface, "find_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
  81                         break;
  82         }
  83         DEBUG(binder_interface, "Found %d signal(s)", (int)found_signals.size());
  84 }
  85
  86 std::vector<Obd2Pid>& get_obd2_signals()
  87 {
  88         return OBD2_PIDS;
  89 }
  90
  91 uint32_t get_signal_id(const Obd2Pid& sig)
  92 {
  93         return (uint32_t)sig.pid;
  94 }
  95
  96 void shims_logger(const char* m, const struct afb_binding_interface *interface)
  97 {
  98         DEBUG(interface, "%s", m);
  99 }
 100
 101 void shims_timer()
 102 {
 103 }
 104
 105 bool is_obd2_response(can_message_t can_message)
 106 {
 107         if(can_message.get_id() >= 0x7E8 && can_message.get_id() <= 0x7EF)
 108         {
 109                 openxc_VehicleMessage message = {0};
 110                 message.has_type = true;
 111                 message.type = openxc_VehicleMessage_Type_DIAGNOSTIC;
 112                 message.has_diagnostic_response = true;
 113                 message.diagnostic_response = {0};
 114                 message.diagnostic_response.has_bus = true;
 115                 message.diagnostic_response.bus = bus->address;
 116                 message.diagnostic_response.has_message_id = true;
 117                 //7DF should respond with a random message id between 7e8 and 7ef
 118                 //7E0 through 7E7 should respond with a id that is 8 higher (7E0->7E8)
 119                 if(commandRequest->message_id == 0x7DF)
 120                 {
 121                         message.diagnostic_response.message_id = rand()%(0x7EF-0x7E8 + 1) + 0x7E8;
 122                 }
 123                 else if(commandRequest->message_id >= 0x7E0 && commandRequest->message_id <= 0x7E7)
 124                 {
 125                         message.diagnostic_response.message_id = commandRequest->message_id + 8;
 126                 }
 127                 message.diagnostic_response.has_mode = true;
 128                 message.diagnostic_response.mode = commandRequest->mode;
 129                 if(commandRequest->has_pid)
 130                 {
 131                         message.diagnostic_response.has_pid = true;
 132                         message.diagnostic_response.pid = commandRequest->pid;
 133                 }
 134                 message.diagnostic_response.has_value = true;
 135                 message.diagnostic_response.value = rand() % 100;
 136                 pipeline::publish(&message, &getConfiguration()->pipeline);
 137         }
 138         else //If it's outside the range, the command_request will return false
 139         {
 140                 debug("Sent message ID is outside the valid range for emulator (7DF to 7E7)");
 141                 status=false;
 142 };
 143
 144 /*
 145  * Will scan for supported Obd2 pids
 146  *
 147 obd2_handler_t::obd2_handler_t()
 148 {
 149         DiagnosticShims shims_ = diagnostic_init_shims(shims_logger, can_bus.send_can_message, NULL);
 150
 151         int n_pids_, i_;
 152
 153         n_pids_ = size(Obd2Pid);
 154         for(i_=0; i_<=n_pids_; i_++)
 155         {
 156         }
 157 }
 158
 159 void obd2_handler_t::add_request(int pid)
 160 {
 161         DiagnosticRequest request = {
 162         arbitration_id: OBD2_FUNCTIONAL_BROADCAST_ID,
 163         mode: 0x1, has_true, pid};
 164 }
 165
 166 bool obd2_handler_t::is_obd2_request(DiagnosticRequest* request)
 167 {
 168         return request->mode == 0x1 && request->has_pid && request->pid < 0xff;
 169 }
 170
 171 bool obd2_handler_t::is_obd2_signal(const char *name)
 172 {
 173         if(fnmatch("obd2.*", name, FNM_CASEFOLD) == 0)
 174                 return true;
 175         return false;
 176 }
 177
 178 bool obd2_handler_t::decode_obd2_response(DiagnosticResponse* responce)
 179 {
 180         return diagnostic_decode_obd2_pid(response);
 181 }*/