* 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
+ * 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,
*/
/*
- * A representation of an OBD-II PID.
+ * A representation of an OBD-II PID.
*
* pid - The 1 byte PID.
* name - A human readable name to use for this PID when published.
* frequency - The frequency to request this PID if supported by the vehicle
- * when automatic, recurring OBD-II requests are enabled.
+ * when automatic, recurring OBD-II requests are enabled.
*/
enum UNIT {
"NM"
};
+
+/*
+ * 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;
+ 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 Obd2Pid OBD2_PIDS[] = {
- { pid: 0x4, name: "obd2.engine.load", min:0, max: 100, unit: POURCENT, frequency: 5 },
- { pid: 0x5, name: "obd2.engine.coolant.temperature", min: -40, max: 215, unit: DEGREES_CELSIUS, frequency: 1 },
- { pid: 0xa, name: "obd2.fuel.pressure", min: 0, max: 765, unit: KPA, frequency: 1 },
- { pid: 0xb, name: "obd2.intake.manifold.pressure", min: 0, max: 255, unit: KPA, frequency: 1 },
- { pid: 0xc, name: "obd2.engine.speed", min: 0, max: 16383, unit: RPM, frequency: 5 },
- { pid: 0xd, name: "obd2.vehicle.speed", min: 0, max: 255, unit: KM_H, frequency: 5 },
- { pid: 0xf, name: "obd2.intake.air.temperature", min: -40, max:215, unit: DEGREES_CELSIUS, frequency: 1 },
- { pid: 0x10, name: "obd2.mass.airflow", min: 0, max: 655, unit: GRAMS_SEC, frequency: 5 },
- { pid: 0x11, name: "obd2.throttle.position", min: 0, max: 100, unit: POURCENT, frequency: 5 },
- { pid: 0x1f, name: "obd2.running.time", min: 0, max: 65535, unit: SECONDS, frequency: 1 },
- { pid: 0x2d, name: "obd2.EGR.error", min: -100, max: 99, unit: POURCENT, frequency: 0 },
- { pid: 0x2f, name: "obd2.fuel.level", min: 0, max: 100, unit: POURCENT, frequency: 1 },
- { pid: 0x33, name: "obd2.barometric.pressure", min: 0, max: 255, unit: KPA, frequency: 1 },
- { pid: 0x4c, name: "obd2.commanded.throttle.position", min: 0, max: 100, unit: POURCENT, frequency: 1 },
- { pid: 0x52, name: "obd2.ethanol.fuel.percentage", min: 0, max: 100, unit: POURCENT, frequency: 1 },
- { pid: 0x5a, name: "obd2.accelerator.pedal.position", min: 0, max: 100, unit: POURCENT, frequency: 5 },
- { pid: 0x5b, name: "obd2.hybrid.battery-pack.remaining.life", min: 0, max: 100, unit: POURCENT, frequency: 5 },
- { pid: 0x5c, name: "obd2.engine.oil.temperature",min: -40, max: 210, unit: DEGREES_CELSIUS, frequency: 1 },
- { pid: 0x63, name: "obd2.engine.torque", min: 0, max: 65535, unit: NM, frequency: 1 },
+ { pid: 0x4, name: "engine.load", frequency: 5 },
+ { pid: 0x5, name: "engine.coolant.temperature", frequency: 1 },
+ { pid: 0xa, name: "fuel.pressure", frequency: 1 },
+ { pid: 0xb, name: "intake.manifold.pressure", frequency: 1 },
+ { pid: 0xc, name: "engine.speed", frequency: 5 },
+ { pid: 0xd, name: "vehicle.speed", frequency: 5 },
+ { pid: 0xf, name: "intake.air.temperature", frequency: 1 },
+ { pid: 0x10, name: "mass.airflow", frequency: 5 },
+ { pid: 0x11, name: "throttle.position", frequency: 5 },
+ { pid: 0x1f, name: "running.time", frequency: 1 },
+ { pid: 0x27, name: "fuel.level", frequency: 1 },
+ { pid: 0x33, name: "barometric.pressure", frequency: 1 },
+ { pid: 0x4c, name: "commanded.throttle.position", frequency: 1 },
+ { pid: 0x52, name: "ethanol.fuel.percentage", frequency: 1 },
+ { pid: 0x5a, name: "accelerator.pedal.position", frequency: 5 },
+ { pid: 0x5c, name: "engine.oil.temperature", frequency: 1 },
+ { pid: 0x63, name: "engine.torque", frequency: 1 },
};
+ */
+
+/* Public: Check if a request is an OBD-II PID request.
+ *
+ * Returns true if the request is a mode 1 request and it has a 1 byte PID.
+ */
+bool isObd2Request(DiagnosticRequest* request);
+
+/* Public: 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).
+ */
+float handleObd2Pid(const DiagnosticResponse* response, float parsedPayload);
/*
- { pid: 0x4, name: "engine.load", frequency: 5 },
- { pid: 0x5, name: "engine.coolant.temperature", frequency: 1 },
- { pid: 0xa, name: "fuel.pressure", frequency: 1 },
- { pid: 0xb, name: "intake.manifold.pressure", frequency: 1 },
- { pid: 0xc, name: "engine.speed", frequency: 5 },
- { pid: 0xd, name: "vehicle.speed", frequency: 5 },
- { pid: 0xf, name: "intake.air.temperature", frequency: 1 },
- { pid: 0x10, name: "mass.airflow", frequency: 5 },
- { pid: 0x11, name: "throttle.position", frequency: 5 },
- { pid: 0x1f, name: "running.time", frequency: 1 },
- { pid: 0x27, name: "fuel.level", frequency: 1 },
- { pid: 0x33, name: "barometric.pressure", frequency: 1 },
- { pid: 0x4c, name: "commanded.throttle.position", frequency: 1 },
- { pid: 0x52, name: "ethanol.fuel.percentage", frequency: 1 },
- { pid: 0x5a, name: "accelerator.pedal.position", frequency: 5 },
- { pid: 0x5c, name: "engine.oil.temperature", frequency: 1 },
- { pid: 0x63, name: "engine.torque", frequency: 1 },
-};
+ * Object to handle obd2 session with pre-scan of supported pid
+ * then request them regularly
*/
+class Obd2Handler_c {
+ private:
+ /*
+ * Pre-defined OBD-II PIDs to query for if supported by the vehicle.
+ */
+ const Obd2Pid OBD2_PIDS[] = {
+ { pid: 0x04, name: "obd2.engine.load", min:0, max: 100, unit: POURCENT, frequency: 5, supported: false },
+ { pid: 0x05, name: "obd2.engine.coolant.temperature", min: -40, max: 215, unit: DEGREES_CELSIUS, frequency: 1, supported: false },
+ { pid: 0x0a, name: "obd2.fuel.pressure", min: 0, max: 765, unit: KPA, frequency: 1, supported: false },
+ { pid: 0x0b, name: "obd2.intake.manifold.pressure", min: 0, max: 255, unit: KPA, frequency: 1, supported: false },
+ { pid: 0x0c, name: "obd2.engine.speed", min: 0, max: 16383, unit: RPM, frequency: 5, supported: false },
+ { pid: 0x0d, name: "obd2.vehicle.speed", min: 0, max: 255, unit: KM_H, frequency: 5, supported: false },
+ { pid: 0x0f, name: "obd2.intake.air.temperature", min: -40, max:215, unit: DEGREES_CELSIUS, frequency: 1, supported: false },
+ { pid: 0x10, name: "obd2.mass.airflow", min: 0, max: 655, unit: GRAMS_SEC, frequency: 5, supported: false },
+ { pid: 0x11, name: "obd2.throttle.position", min: 0, max: 100, unit: POURCENT, frequency: 5, supported: false },
+ { pid: 0x1f, name: "obd2.running.time", min: 0, max: 65535, unit: SECONDS, frequency: 1, supported: false },
+ { pid: 0x2d, name: "obd2.EGR.error", min: -100, max: 99, unit: POURCENT, frequency: 0, supported: false },
+ { pid: 0x2f, name: "obd2.fuel.level", min: 0, max: 100, unit: POURCENT, frequency: 1, supported: false },
+ { pid: 0x33, name: "obd2.barometric.pressure", min: 0, max: 255, unit: KPA, frequency: 1, supported: false },
+ { pid: 0x4c, name: "obd2.commanded.throttle.position", min: 0, max: 100, unit: POURCENT, frequency: 1, supported: false },
+ { pid: 0x52, name: "obd2.ethanol.fuel.percentage", min: 0, max: 100, unit: POURCENT, frequency: 1, supported: false },
+ { pid: 0x5a, name: "obd2.accelerator.pedal.position", min: 0, max: 100, unit: POURCENT, frequency: 5, supported: false },
+ { pid: 0x5b, name: "obd2.hybrid.battery-pack.remaining.life", min: 0, max: 100, unit: POURCENT, frequency: 5, supported: false },
+ { pid: 0x5c, name: "obd2.engine.oil.temperature",min: -40, max: 210, unit: DEGREES_CELSIUS, frequency: 1, supported: false },
+ { pid: 0x63, name: "obd2.engine.torque", min: 0, max: 65535, unit: NM, frequency: 1, supported: false },
+ };
+
+ public:
+ Obd2Handler_c();
+
+ bool isObd2Request(request);
+}
Code Review / apps / low-level-can-service.git / blobdiff