/* * Copyright (C) 2015, 2016 "IoT.bzh" * Author "Romain Forlot" <romain.forlot@iot.bzh> * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ #pragma once #include <vector> #include "uds/uds.h" #include "can-bus.hpp" extern "C" { #include <afb/afb-binding.h> } enum UNIT { POURCENT, DEGREES_CELSIUS, KPA, RPM, GRAMS_SEC, SECONDS, KM, KM_H, PA, NM }; const char *UNIT_NAMES[10] = { "POURCENT", "DEGREES_CELSIUS", "KPA", "RPM", "GRAMS_SEC", "SECONDS", "KM", "KM_H", "PA", "NM" }; /** * @brief A representation of an OBD-II PID. * * pid - The 1 byte PID. * name - A human readable name to use for this PID when published. * min - minimum value for this pid * max - maximum value for this pid * unit - unit used * frequency - The frequency to request this PID if supported by the vehicle * when automatic, recurring OBD-II requests are enabled. * supported - is it supported by the vehicle. Initialized after scan * event - application framework event handler. */ typedef struct _Obd2Pid { uint8_t pid; const char* name; const int min; const int max; enum UNIT unit; int frequency; bool supported; struct afb_event event; } Obd2Pid; /* * Pre-defined OBD-II PIDs to query for if supported by the vehicle. */ const std::vector<Obd2Pid> OBD2_PIDS { { pid: 0x04, name: "obd2.engine.load", min:0, max: 100, unit: POURCENT, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x05, name: "obd2.engine.coolant.temperature", min: -40, max: 215, unit: DEGREES_CELSIUS, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x0a, name: "obd2.fuel.pressure", min: 0, max: 765, unit: KPA, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x0b, name: "obd2.intake.manifold.pressure", min: 0, max: 255, unit: KPA, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x0c, name: "obd2.engine.speed", min: 0, max: 16383, unit: RPM, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x0d, name: "obd2.vehicle.speed", min: 0, max: 255, unit: KM_H, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x0f, name: "obd2.intake.air.temperature", min: -40, max:215, unit: DEGREES_CELSIUS, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x10, name: "obd2.mass.airflow", min: 0, max: 655, unit: GRAMS_SEC, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x11, name: "obd2.throttle.position", min: 0, max: 100, unit: POURCENT, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x1f, name: "obd2.running.time", min: 0, max: 65535, unit: SECONDS, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x2d, name: "obd2.EGR.error", min: -100, max: 99, unit: POURCENT, frequency: 0, supported: false, event: {nullptr, nullptr} }, { pid: 0x2f, name: "obd2.fuel.level", min: 0, max: 100, unit: POURCENT, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x33, name: "obd2.barometric.pressure", min: 0, max: 255, unit: KPA, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x4c, name: "obd2.commanded.throttle.position", min: 0, max: 100, unit: POURCENT, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x52, name: "obd2.ethanol.fuel.percentage", min: 0, max: 100, unit: POURCENT, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x5a, name: "obd2.accelerator.pedal.position", min: 0, max: 100, unit: POURCENT, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x5b, name: "obd2.hybrid.battery-pack.remaining.life", min: 0, max: 100, unit: POURCENT, frequency: 5, supported: false, event: {nullptr, nullptr} }, { pid: 0x5c, name: "obd2.engine.oil.temperature",min: -40, max: 210, unit: DEGREES_CELSIUS, frequency: 1, supported: false, event: {nullptr, nullptr} }, { pid: 0x63, name: "obd2.engine.torque", min: 0, max: 65535, unit: NM, frequency: 1, supported: false, event: {nullptr, nullptr} } }; /** * @brief - Object to handle obd2 session with pre-scan of supported pid * then request them regularly */ class obd2_handler_t { private: public: /** * @brief: * * Returns */ void find_obd2_pid(const char *name, std::vector<Obd2Pid> *pids); /** * @brief Check if a request is an OBD-II PID request. * * @return true if the request is a mode 1 request and it has a 1 byte PID. */ bool is_obd2_request(DiagnosticRequest *request); /** * @brief Check if requested signal name is an obd2 pid * * @return true if name began with ob2.* else false. */ bool is_obd2_signal(const char *name); /** * @brief Decode the payload of an OBD-II PID. * * This function matches the type signature for a DiagnosticResponseDecoder, so * it can be used as the decoder for a DiagnosticRequest. It returns the decoded * value of the PID, using the standard formulas (see * http://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_01). * * @param[in] DiagnosticResponse response - the received DiagnosticResponse (the data is in response.payload, * a byte array). This is most often used when the byte order is * signiticant, i.e. with many OBD-II PID formulas. * @param[in] float parsed_payload - the entire payload of the response parsed as an int. */ float handle_obd2_pid(const DiagnosticResponse* response, float parsedPayload); };