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Merge pull request #1652 from mck1117/obd2-lambda 

send lambda over obd2
This commit is contained in:
rusefillc 2020-08-12 22:58:36 -04:00 committed by GitHub
parent 13b7f44a97 b2c6104a6b
commit 63b4868751
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GPG Key ID: 4AEE18F83AFDEB23
2 changed files with 18 additions and 1 deletions
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17
firmware/controllers/can/obd2.cpp
View File

@ -38,6 +38,7 @@
#include "engine_math.h"
#include "fuel_math.h"
#include "thermistors.h"
#include "ego.h"
EXTERN_ENGINE;
@ -46,6 +47,7 @@ static const int16_t supportedPids0120[] = {
PID_FUEL_SYSTEM_STATUS,
PID_ENGINE_LOAD,
PID_COOLANT_TEMP,
PID_STFT_BANK1,
PID_INTAKE_MAP,
PID_RPM,
PID_SPEED,
@ -56,6 +58,7 @@ static const int16_t supportedPids0120[] = {
};
static const int16_t supportedPids2140[] = {
PID_FUEL_AIR_RATIO_1,
-1
};
@ -128,6 +131,9 @@ static void handleGetDataRequest(const CANRxFrame& rx) {
case PID_COOLANT_TEMP:
obdSendValue(1, pid, 1, Sensor::get(SensorType::Clt).value_or(0) + 40.0f);
break;
case PID_STFT_BANK1:
obdSendValue(1, pid, 1, 128 * ENGINE(engineState.running.pidCorrection));
break;
case PID_INTAKE_MAP:
obdSendValue(1, pid, 1, getMap(PASS_ENGINE_PARAMETER_SIGNATURE));
break;
@ -152,7 +158,16 @@ static void handleGetDataRequest(const CANRxFrame& rx) {
case PID_THROTTLE:
obdSendValue(1, pid, 1, Sensor::get(SensorType::Tps1).value_or(0) * 2.55f); // (A*100/255)
break;
case PID_FUEL_RATE:
case PID_FUEL_AIR_RATIO_1: {
float afr = getAfr(PASS_ENGINE_PARAMETER_SIGNATURE);
// phi = 1 / lambda
float phi = clampF(0, 14.7f / afr, 1.99f);
uint16_t scaled = phi * 32768;
obdSendPacket(1, pid, 4, scaled << 16);
break;
} case PID_FUEL_RATE:
obdSendValue(1, pid, 2, engine->engineState.fuelConsumption.perSecondConsumption * 20.0f); // L/h. (A*256+B)/20
break;
default:

2
firmware/controllers/can/obd2.h
View File

@ -22,6 +22,7 @@
#define PID_FUEL_SYSTEM_STATUS 0x03
#define PID_ENGINE_LOAD 0x04
#define PID_COOLANT_TEMP 0x05
#define PID_STFT_BANK1 0x06
#define PID_FUEL_PRESSURE 0x0A
#define PID_INTAKE_MAP 0x0B
#define PID_RPM 0x0C
@ -32,6 +33,7 @@
#define PID_THROTTLE 0x11
#define PID_SUPPORTED_PIDS_REQUEST_21_40 0x20
#define PID_FUEL_AIR_RATIO_1 0x24
#define PID_SUPPORTED_PIDS_REQUEST_41_60 0x40
#define PID_FUEL_RATE 0x5E