Personaly
what i did in the past to log value with arduino and torque
i was using a standard PID that the pcm would not respond 90 in my case
and i was letting the arduino respond to torque
torque didn’t know any better
i was inputing my pressure sensor voltage
something like this
/*********************************************************************
* Mechanic – Hacking your car
*
* Copyright (C) 2013 Joerg Pleumann
*
* This example is free software; you can redistribute it and/or
* modify it under the terms of the Creative Commons Zero License,
* version 1.0, as published by the Creative Commons Organisation.
* This effectively puts the file into the public domain.
*
* This example is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* LICENSE file for more details.
*/
#include
ObdInterface obd;
ObdMessage out;
ObdMessage in;
int SensorValue = 0;
float PsiValue = 0;
float Temp;
int ValuePID90xA;
int ValuePID90xB;
int ValuePID08xA;
void setup() {
Serial.begin(115200);
//while (!Serial);
Serial.println();
Serial.println();
Serial.println(” ADDR LN MO PI D0 D1 D2 D3 D4″);
Serial.println(“——– — — — — — — — –“);
obd.setSlow(false);
obd.setExtended(false);
obd.setDebug(false);
obd.setNoFilter(false); // Show all messages, not just ECU answers
obd.begin();
out.address = 0x7e8;
out.mode = 0x41;
}
void loop() {
if (obd.receiveMessage(in)) {
Serial.println(in);
if (in.pid == 0x90) { // Si pid est 90 envoie la valeur courante
Serial.println(“sending”);
Serial.print(” PID 0x90,Sensor “);Serial.print(SensorValue);
Serial.print(” Psi: “); Serial.print(PsiValue);
Serial.print(” A: “); Serial.print(ValuePID90xA);
Serial.print(” B: “); Serial.println(ValuePID90xB);
out.address = 0x7e8;
out.length = 0x4;
out.pid = 0x90;
out.values[0] = ValuePID90xA;
out.values[1] = ValuePID90xB;
obd.sendMessage(out);
}
if (in.pid == 0x08) { // Si pid est 08 envoie la valeur courante
Serial.println(“sending”);
Serial.print(” PID 0x08,Sensor “);Serial.print(SensorValue);
Serial.print(” A: “); Serial.println(ValuePID08xA);
out.address = 0x7e8;
out.length = 0x4;
out.pid = 0x08;
out.values[0] = ValuePID08xA;
out.values[1] = 0;
obd.sendMessage(out);
}
}
// Valeur pour PID 0x90
SensorValue = analogRead(A0) + 1;
PsiValue = (45.6125*SensorValue/1024) + 0.148721; // 5 Volts ou 1024 = 45.6125 Psi, 0.148721 il y a un leger offset dans les valeurs
ValuePID90xA = (int) PsiValue;
Temp = (PsiValue – ValuePID90xA) * 100;
ValuePID90xB = (int) Temp;
/*
Serial.print(” PID 0x90,Sensor “);Serial.print(SensorValue);
Serial.print(” Psi: “); Serial.print(PsiValue);
Serial.print(” A: “); Serial.print(ValuePID90xA);
Serial.print(” B: “); Serial.println(ValuePID90xB);
*/
// Valeur pour PID 0x08
ValuePID08xA = map(SensorValue,0,1024,0,256); // 5 Volts ou 1024 = 45.6125 Psi et modifier en 0 a 255 et envoye comme pid de short trim bank 2
/*
Serial.print(” PID 0x08,Sensor “);Serial.print(SensorValue);
Serial.print(” A: “); Serial.println(ValuePID08xA);
*/
delay(20);
}
torque pid
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Author
Arduino & OBD simultaneously
