2 * Copyright (C) 2015, 2016 "IoT.bzh"
3 * Author "Romain Forlot" <romain.forlot@iot.bzh>
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
9 * http://www.apache.org/licenses/LICENSE-2.0
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.
18 #include "obd2-signals.hpp"
20 #include "signals.hpp"
22 const char *UNIT_NAMES[10] = {
36 * Pre-defined OBD-II PIDs to query for if supported by the vehicle.
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}
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
64 * @param[in] const openxc_DynamicField : can contain numeric or string value in order to search against
65 * can signals or obd2 signals name.
67 * @return std::vector<std::string> Vector of signals name found.
69 void find_signals(const openxc_DynamicField &key, std::vector<Obd2Pid*>& found_signals)
73 case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
74 lookup_signals_by_name(key.string_value, get_obd2_signals(), found_signals);
76 case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
77 lookup_signals_by_id(key.numeric_value, get_obd2_signals(), found_signals);
80 ERROR(binder_interface, "find_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
83 DEBUG(binder_interface, "Found %d signal(s)", (int)found_signals.size());
86 std::vector<Obd2Pid>& get_obd2_signals()
91 uint32_t get_signal_id(const Obd2Pid& sig)
93 return (uint32_t)sig.pid;
96 void shims_logger(const char* m, const struct afb_binding_interface *interface)
98 DEBUG(interface, "%s", m);
106 * Will scan for supported Obd2 pids
108 obd2_handler_t::obd2_handler_t()
110 DiagnosticShims shims_ = diagnostic_init_shims(shims_logger, can_bus.send_can_message, NULL);
114 n_pids_ = size(Obd2Pid);
115 for(i_=0; i_<=n_pids_; i_++)
120 void obd2_handler_t::add_request(int pid)
122 DiagnosticRequest request = {
123 arbitration_id: OBD2_FUNCTIONAL_BROADCAST_ID,
124 mode: 0x1, has_true, pid};
127 bool obd2_handler_t::is_obd2_request(DiagnosticRequest* request)
129 return request->mode == 0x1 && request->has_pid && request->pid < 0xff;
132 bool obd2_handler_t::is_obd2_signal(const char *name)
134 if(fnmatch("obd2.*", name, FNM_CASEFOLD) == 0)
139 bool obd2_handler_t::decode_obd2_response(DiagnosticResponse* responce)
141 return diagnostic_decode_obd2_pid(response);