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authorRomain Forlot <romain.forlot@iot.bzh>2017-03-06 22:28:50 +0100
committerRomain Forlot <romain.forlot@iot.bzh>2017-03-16 17:05:17 +0100
commitde8fb10e1d8e98a85dfba6fc8966266dbf5e42c6 (patch)
tree0eab1a766f80b7498d63fb8ecd36486c13b633a2 /src/diagnostic
parent4fd376fac5b1d47eed3f22467ae5b5e35f1ec610 (diff)
Beginning of work on obd2 object and
files reorganization. Change-Id: Idaa7ad05c45d734ce771506fd6e41f1a09a6ac66 Signed-off-by: Romain Forlot <romain.forlot@iot.bzh>
Diffstat (limited to 'src/diagnostic')
-rw-r--r--src/diagnostic/diagnostic-message.cpp206
-rw-r--r--src/diagnostic/diagnostic-message.hpp94
2 files changed, 300 insertions, 0 deletions
diff --git a/src/diagnostic/diagnostic-message.cpp b/src/diagnostic/diagnostic-message.cpp
new file mode 100644
index 0000000..bfca85b
--- /dev/null
+++ b/src/diagnostic/diagnostic-message.cpp
@@ -0,0 +1,206 @@
+/*
+ * 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.
+ */
+
+#include "obd2-signals.hpp"
+
+#include "signals.hpp"
+
+const char *UNIT_NAMES[10] = {
+ "POURCENT",
+ "DEGREES_CELSIUS",
+ "KPA",
+ "RPM",
+ "GRAMS_SEC",
+ "SECONDS",
+ "KM",
+ "KM_H",
+ "PA",
+ "NM"
+};
+
+/*
+* Pre-defined OBD-II PIDs to query for if supported by the vehicle.
+*/
+ std::vector<obd2_signals_t> OBD2_PIDS = {
+ { 0x04, "obd2.engine.load", 0, 100, POURCENT, 5, false},
+ { 0x05, "obd2.engine.coolant.temperature", -40, 215, DEGREES_CELSIUS, 1, false},
+ { 0x0a, "obd2.fuel.pressure", 0, 765, KPA, 1, false},
+ { 0x0b, "obd2.intake.manifold.pressure", 0, 255, KPA, 1, false},
+ { 0x0c, "obd2.engine.speed", 0, 16383, RPM, 5, false},
+ { 0x0d, "obd2.vehicle.speed", 0, 255, KM_H, 5, false},
+ { 0x0f, "obd2.intake.air.temperature", -40, 215, DEGREES_CELSIUS, 1, false},
+ { 0x10, "obd2.mass.airflow", 0, 655, GRAMS_SEC, 5, false},
+ { 0x11, "obd2.throttle.position", 0, 100, POURCENT, 5, false},
+ { 0x1f, "obd2.running.time", 0, 65535, SECONDS, 1, false},
+ { 0x2d, "obd2.EGR.error", -100, 99, POURCENT, 0, false},
+ { 0x2f, "obd2.fuel.level", 0, 100, POURCENT, 1, false},
+ { 0x33, "obd2.barometric.pressure", 0, 255, KPA, 1, false},
+ { 0x4c, "obd2.commanded.throttle.position", 0, 100, POURCENT, 1, false},
+ { 0x52, "obd2.ethanol.fuel.percentage", 0, 100, POURCENT, 1, false},
+ { 0x5a, "obd2.accelerator.pedal.position", 0, 100, POURCENT, 5, false},
+ { 0x5b, "obd2.hybrid.battery-pack.remaining.life", 0, 100, POURCENT, 5, false},
+ { 0x5c, "obd2.engine.oil.temperature",-40, 210, DEGREES_CELSIUS, 1, false},
+ { 0x63, "obd2.engine.torque", 0, 65535, NM, 1, false}
+};
+
+obd2_signals_t::obd2_signals_t(uint8_t pid, const char* generic_name, const int min, const int max, enum UNIT unit, int frequency, bool supported)
+ : pid_{pid}, generic_name_{generic_name}, min_{min}, max_{max}, unit_{unit}, frequency_{frequency}, supported_{supported}
+{
+}
+
+void obd2_signals_t::init_diagnostic_shims(can_bus_dev_t& can_bus_dev)
+{
+ DiagnosticShims shims_ = diagnostic_init_shims(shims_logger, can_bus_dev.send_can_message, NULL);
+
+ int n_pids_, i_;
+
+ n_pids_ = size(Obd2Pid);
+ for(i_=0; i_<=n_pids_; i_++)
+ {
+ }
+}
+
+/**
+ * @fn std::vector<std::string> find_signals(const openxc_DynamicField &key)
+ * @brief return signals name found searching through CAN_signals and OBD2 pid
+ *
+ * @param[in] const openxc_DynamicField : can contain numeric or string value in order to search against
+ * can signals or obd2 signals name.
+ *
+ * @return std::vector<std::string> Vector of signals name found.
+ */
+void obd2_signals_t::find_obd2_signals(const openxc_DynamicField &key, std::vector<Obd2Pid*>& found_signals)
+{
+ switch(key.type)
+ {
+ case openxc_DynamicField_Type::openxc_DynamicField_Type_STRING:
+ lookup_signals_by_name(key.string_value, get_obd2_signals(), found_signals);
+ break;
+ case openxc_DynamicField_Type::openxc_DynamicField_Type_NUM:
+ lookup_signals_by_id(key.numeric_value, get_obd2_signals(), found_signals);
+ break;
+ default:
+ ERROR(binder_interface, "find_signals: wrong openxc_DynamicField specified. Use openxc_DynamicField_Type_NUM or openxc_DynamicField_Type_STRING type only.");
+ break;
+ }
+ DEBUG(binder_interface, "Found %d signal(s)", (int)found_signals.size());
+}
+
+std::vector<Obd2Pid>& get_obd2_signals()
+{
+ return OBD2_PIDS;
+}
+
+uint32_t get_signal_id(const Obd2Pid& sig)
+{
+ return (uint32_t)sig.pid;
+}
+
+void shims_logger(const char* m, const struct afb_binding_interface *interface)
+{
+ DEBUG(interface, "%s", m);
+}
+
+void shims_timer()
+{
+}
+
+bool obd2_signals_t::is_obd2_response(can_message_t can_message)
+{
+ if(can_message.get_id() >= 0x7E8 && can_message.get_id() <= 0x7EF)
+ {
+ openxc_VehicleMessage message = {0};
+ message.has_type = true;
+ message.type = openxc_VehicleMessage_Type_DIAGNOSTIC;
+ message.has_diagnostic_response = true;
+ message.diagnostic_response = {0};
+ message.diagnostic_response.has_bus = true;
+ message.diagnostic_response.bus = bus->address;
+ message.diagnostic_response.has_message_id = true;
+ //7DF should respond with a random message id between 7e8 and 7ef
+ //7E0 through 7E7 should respond with a id that is 8 higher (7E0->7E8)
+ if(can_message.get_id() == 0x7DF)
+ {
+ message.diagnostic_response.message_id = rand()%(0x7EF-0x7E8 + 1) + 0x7E8;
+ }
+ else if(commandRequest->message_id >= 0x7E0 && commandRequest->message_id <= 0x7E7)
+ {
+ message.diagnostic_response.message_id = commandRequest->message_id + 8;
+ }
+ message.diagnostic_response.has_mode = true;
+ message.diagnostic_response.mode = commandRequest->mode;
+ if(commandRequest->has_pid)
+ {
+ message.diagnostic_response.has_pid = true;
+ message.diagnostic_response.pid = commandRequest->pid;
+ }
+ message.diagnostic_response.has_value = true;
+ message.diagnostic_response.value = rand() % 100;
+ pipeline::publish(&message, &getConfiguration()->pipeline);
+ }
+ else //If it's outside the range, the command_request will return false
+ {
+ debug("Sent message ID is outside the valid range for emulator (7DF to 7E7)");
+ status=false;
+};
+
+void obd2_signals_t::add_request(int pid)
+{
+ DiagnosticRequest request = {
+ arbitration_id: OBD2_FUNCTIONAL_BROADCAST_ID,
+ mode: 0x1, has_true, pid};
+}
+
+/**
+* @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 obd2_signals_t::is_obd2_request(DiagnosticRequest* request)
+{
+ return request->mode == 0x1 && request->has_pid && request->pid < 0xff;
+}
+
+/**
+* @brief Check if requested signal name is an obd2 pid
+*
+* @return true if name began with obd2 else false.
+*/
+bool obd2_signals_t::is_obd2_signal(const char *name)
+{
+ if(fnmatch("obd2.*", name, FNM_CASEFOLD) == 0)
+ return true;
+ return false;
+}
+
+/**
+* @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 obd2_signals_t::decode_obd2_response(const DiagnosticResponse* response, float parsedPayload)
+{
+ return diagnostic_decode_obd2_pid(response);
+} \ No newline at end of file
diff --git a/src/diagnostic/diagnostic-message.hpp b/src/diagnostic/diagnostic-message.hpp
new file mode 100644
index 0000000..a8f21e0
--- /dev/null
+++ b/src/diagnostic/diagnostic-message.hpp
@@ -0,0 +1,94 @@
+/*
+ * 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"
+#include "can-message.hpp"
+
+#include "low-can-binding.hpp"
+
+enum UNIT {
+ POURCENT,
+ DEGREES_CELSIUS,
+ KPA,
+ RPM,
+ GRAMS_SEC,
+ SECONDS,
+ KM,
+ KM_H,
+ PA,
+ NM,
+ INVALID
+};
+
+/**
+ * @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
+ */
+typedef struct _Obd2Pid {
+ uint8_t pid;
+ const char* generic_name;
+ const int min;
+ const int max;
+ enum UNIT unit;
+ int frequency;
+ bool supported;
+} Obd2Pid;
+
+/**
+ * @brief - Object to handle obd2 session with pre-scan of supported pid
+ * then request them regularly
+ */
+class obd2_signals_t {
+ private:
+ uint8_t pid_;
+ const char* generic_name_;
+ const int min_;
+ const int max_;
+ enum UNIT unit_;
+ int frequency_;
+ bool supported_;
+
+ public:
+ obd2_signals_t(uint8_t pid, const char* generic_name, const int min_, const int max_, enum UNIT unit, int frequency, bool supported);
+
+ void init_diagnostic_shims(can_bus_dev_t& can_bus_dev)
+ void add_request(int pid);
+ std::vector<Obd2Pid>& get_obd2_signals();
+
+ uint32_t get_signal_id(const Obd2Pid& sig);
+ void find_obd2_signals(const openxc_DynamicField &key, std::vector<Obd2Pid*>& found_signals);
+
+
+ bool is_obd2_response(can_message_t can_message);
+ bool is_obd2_request(DiagnosticRequest *request);
+ bool is_obd2_signal(const char *name);
+
+ float decode_obd2_response(const DiagnosticResponse* response, float parsedPayload);
+}; \ No newline at end of file