Published November 2, 2016 © GPL3+

Visualize Car Data With Carloop And Blynk

Visualize car data with a free Blynk account, particle electron and Carloop.

IntermediateFull instructions provided3 hours12,892

Visualize Car Data With Carloop And Blynk

Things used in this project

Hardware components

Particle Electron

Carloop

Software apps and online services

Blynk

Story

Introduction

Using Carloop, Particle Electron, and a Blynk account, I've been able to visualize parameters from my vehicle at a 10-second update interval. In this project I'll provide you step-by-step instructions for the following:

Setting up your Particle Electron

Connecting the hardware (Particle Electron, Carloop and to the OBDII port)

Programming the Particle Electron

Setting up your Blynk account

Visualizing your data!

By the end of this project you should not only have your car's data visualized via Blynk, but you should also gain a fundamental understanding of the canbus network, OBDII specifications, and Blynk. I hope you're as excited as I am and would love to hear your ideas or take your advice. As I am no programmer by training, there are probably some improvements that could be made to how I've done things here, but that also may (hopefully) mean that my code is super readable!

High Level View

Starting in the lower left, you'll see Vehicle HS CAN Network. Two things to note about this:

The CAN network is what everything else rides on (for our purposes). This means that if you hear someone mention OBDII or CAN in the same context, they are only the same in one direction. That is, OBDII is CAN. CAN is not OBDII. The OBDII standard rides on top of the CAN Network.

HS = High Speed. There may be more than one CAN network on your vehicle. Most actually have two. HS and MS (Medium Speed). HS is usually system critical information, such as engine RPM or Mass Air Flow whereas MS CAN Network may contain information about what radio station you're listening to.

So... we are going to be accessing the OBDII standard information as described here. There are other bits and bytes correlating to so many other sensors, but any standard likely stops at each manufacturer!

Setting Up the Electron

This part is super simple! Just head to particle.io for a great step-by-step guide that the folks at Particle have put together to get started. The process is straight forward, although the link won't stand out at you if you speed read on Particle's site. So here it is.

Connecting the Hardware

After unboxing, go ahead plug the Particle Electron into Carloop as shown -

Find the OBDII port on your vehicle. Usually this is located just under the steering wheel. This is where we will plug in Carloop.

Programming the Electron - Part 1

This will be a two step process. First we want to find out whats available from our car. Then we want to visualize that data (no sense in publishing sensors to Blynk that have no values).

To save you from having to do a ton of tedious work (see picture below) I've created a program that will poll all available PIDs from your car!

If you're not familiar with the Particle Web IDE, I'll help guide you through.

First, log in to build.particle.io.

Click the code button in the lower left hand screen of the IDE options -

and then select "Create New App"

Give this "app" a name, here I've called it OBD_PID_PRINTER -

Click the "Save" button in the upper left menu -

Click "Libraries", type "carloop" into the search field for Community Libraries and then click CARLOOP.

Select "INCLUDE IN APP"

Click the upper right "+" button to create tabs within your application.

Rename lib1.h to base85 and copy/paste the code from here into that tab. It should now look as shown below -

Remove the base85.cpp file and copy/paste the code here into your application file. In my case, it's the obi-pid-printer.ino tab.

Click Save, Verify and Flash (if your Particle is powered on and connected to the internet).

Once we've successfully flashed the code onto the Particle Electron, the next step is to plug a usb cable into your computer and to the micro - usb port on the Particle. I'm assuming that the correct drivers are installed already. If not, here is a great introduction.

Plug the Particle, along with Carloop, into the OBDII port of your vehicle (usually located right under the steering wheel).

Start the car!

Read PIDs - Mac/Linux

After connecting your computer to the Particle, open terminal and type

ls /dev/tty.\*

Note the information regarding the usb connection and run the following command with your usb port information (if you have multiple devices plugged into your usb ports, you may have to unplug and plug in again to identify which tty.usb* is being applied to the Particle.

screen /dev/tty.usbmodem1411 112500

Example output:

Engine RPM 
Intake manifold absolute pressure 
Oxygen Sensor 2 
Oxygen sensors present (in 2 banks) 
Throttle position

If you've made it this far, congratulations!

Save all this information to a text file so we can use later.

Read PIDs - Windows

Install Windows drivers here if not already done so. Using Device Manager, note the com port your Particle is using. Open your favorite serial port monitor, select the com port found in Device Manager and set to 115200. Watch and save the output as a text file for later use.

Setup Blynk Account

Now we want to set up our Blynk account. Download from the iOS or Android app store.

Once you install and create an account, you'll be presented with the option to Create a New Project.

Give your project a name and select Particle Electron in the Hardware Model field.

Tap and copy Auth Token to clipboard or send to email address registered when you first installed the Blynk application. (We'll use this in our code for char auth[])

Modify Example Code

Grab the next piece of code we are going to flash to the Particle here and paste it into the Particle web IDE just as before. There are a few things we need to modify before this code will work for you.

The first step is to update the char auth[] field within the code. Take the Auth Token you copied and sent to yourself and place it between quotes after the = sign. Don't forget the ; at the end. Here's an example:

char auth[] = "text copied from Blynk app";

Now, scroll all the way down to the voidBlynkValues() function. Each sensor needs to be created as a string and we are publishing that value to Blynk (hence the StringEngine_RPM, String Engine_Load, etc. Feel free to use this as a template.

Take the text file you saved from before and configure each sensor you would like to see in Blynk and configure it here (Keep in mind, as you reduce the number of sensors, you are reducing data consumption).

Scroll down a little further...In here you will see a ton of things already set. This is for my car, and I'm publishing each one of these values to a "virtual pin" denoted below as V0, V1, V2 etc.

Programming the Electron - Part 2

Now we want to flash the electron one last time. Using the code that you've modified from the previous section, flash it! Make sure you include the base85.h file in the same manor as the first flash you performed and include the Carloop library just as before. (Libraries > Search carloop > add to existing code)

You'll want to additionally include the library for Blynk (Libraries > Search Blynk > add to existing code).

Note 1: If you get errors on compiling, look at the console. It's there to help. Could be as simple as a library incorrectly added. If you run into issues here, I'm happy to help - just leave a comment below.

Note 2: I have ran into problems flashing my Particle after its been on for more than 30 seconds, I then have to press the reset button directly on the device and then upload once it gains access to the Particle cloud (breathing cyan). Not sure if this is an issue on other boards. I'm also using a T-mobile SIM.

Back to Blynk!

Now we want to configure the receiving end (Bynk) to plot or show the values you specified from within the voidBlynkValues function from the previous section.

Creating charts and gauges use "energy" and you can either earn energy by watching advertisements or pay up front for it. Best in-app purchase use I've seen in a while. You start with a certain amount of this "energy" and if you decide that you don't like that particular visualization, you can always delete it and value will return back to you in-app bank.

To start, tap within the blank canvas area -

Select a widget you'd like to add to the canvas -

In this case, I chose to add a gauge. Some make sense for this application, others do not. Experiment!

Tap "pin" and change from analog to virtual (remember those V0, V1, etc assignments from earlier?) and select Vn, where n is the number that corresponds to the data you would like to see. In my case V7 is Engine RPM.

Keep adding until you've created something you like!

You're Almost Finished!

Plug the Particle and Carloop into the OBDII port within your car if not already done so.

Start your car.

Ensure it has a connection (breathing cyan) and press the "play" button in the upper right corner of the application on your phone. I have noticed that Blynk may not detect that the Particle is online immediately. Give it a few seconds, try again. If all else fails, force quit and re-open the application. Once it gains the connection, it does not loose it.

Summary and Planned Updates

I hope that you've enjoyed connecting your car to the internet! Any suggestions/questions are welcome and I plan to actively update this procedure as the project changes on GitHub. Some planned improvements are:

Converting the 1000 or so lines of code revolving around math for scaling and offsets into a library

Working with Carloop to create a web interface application so that you will not have to climb in and out of your vehicle to monitor com ports.

Separating the visualization tool for multiple services

Incorporating remote control of certain functions (need to think this through)

Auto configure data sent based on values available

More details explaining how the code works

Code

/*
 * Copyright 2016 Emerson Garland
 * Free to modify, share and do whatever, just give me credit if you like it!
 * This code will publish chosen obdii compliant messages to blynk for data visualization.
 */

//#include "carloop.h"
// include carloop.h using the ide add library function.
#include "base85.h"
// include base85.h by copy and pasting base85.h located in this repository into the web ide
//#include "blynk/blynk.h"
// include blynk/blynk.h using the ide add library function.

SYSTEM_MODE(SEMI_AUTOMATIC);
SYSTEM_THREAD(ENABLED);

void sendObdRequest();
void waitForObdResponse();
void delayUntilNextRequest();
void printValuesAtInterval();
void publishValuesAtInterval();
void printValues();
void getEngineLoad();
void receiveObdRequestVIN();
void sendObdRequestVIN();

//PLACE YOUR BLYNK AUTHENTICATION KEY IN BELOW AS SHOWN IN EXAMPLE BELOW:
//char auth[] = "xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx";


char auth[] = "Your key here";

String dumpMessage(const CANMessage &message);
bool byteArray8Equal(uint8_t a1[8], uint8_t a2[8]);

Carloop<CarloopRevision2> carloop;

int canMessageCount = 0;


/////////////////////////////////////////////////////////////////////////
//GLOBAL FLOATS FOR USE IN PRINTING AND PUBLISHING TO EXTERNAL SERVICES//
/////////////////////////////////////////////////////////////////////////

//ACRONYM DEFINITIONS:
//O2_V_1 = OXYGEN SENSOR 1 VOLTAGE
//O2_T_1 = OXYGEN SENSOR 1 FUEL TRIM
//O2_F_A_E_R_V_1_FUEL = OXYGEN SENSOR 1 FUEL TO AIR EQUIVILANCE RATIO AND VOLTAGE FUEL BYTE
//O2_F_A_E_R_V_1_VOLTAGE = OXYGEN SENSOR 1 FUEL TO AIR EQUIVILANCE RATIO AND VOLTAGE VOLTAGE BYTE
//O2_F_A_E_R_C_1_CURRENT = OXYGEN SENSOR 1 FUEL TO AIR EQUIVILANCE RATIO AND CURRENT CURRENTE BYTE

float MIL_STATUS;
float FUEL_SYSTEM_STATUS;
float ENGINE_LOAD;
float COOLANT_TEMPERATURE;
float SHORT_TERM_FUEL_TRIM_BANK_1;
float LONG_TERM_FUEL_TRIM_BANK_1;
float SHORT_TERM_FUEL_TRIM_BANK_2;
float LONG_TERM_FUEL_TRIM_BANK_2;
float FUEL_PRESSURE;
float INTAKE_MANIFOLD_PRESSURE;
float ENGINE_RPM;
float VEHICLE_SPEED;
float TIMING_ADVANCE;
float INTAKE_AIR_TEMPERATURE;
float MAF_AIR_FLOW_RATE;
float THROTTLE;
float COMMANDED_SECONDARY_AIR_STATUS;
float O2_SENSORS_PRESENT;
float O2_V_1;
float O2_T_1;
float O2_V_2;
float O2_T_2;
float O2_V_3;
float O2_T_3;
float O2_V_4;
float O2_T_4;
float O2_V_5;
float O2_T_5;
float O2_V_6;
float O2_T_6;
float O2_V_7;
float O2_T_7;
float O2_V_8;
float O2_T_8;
float OBD_STANDARDS;
float ENGINE_RUN_TIME;
float SUPPORTED_PIDS_21_40;
float DISTANCE_TRAVELED_WITH_MIL_ON;
float FUEL_RAIL_PRESSURE;
float FUEL_RAIL_GAUGE_PRESSURE;
float O2_F_A_E_R_V_1_FUEL;
float O2_F_A_E_R_V_1_VOLTAGE;
float O2_F_A_E_R_V_2_FUEL;
float O2_F_A_E_R_V_2_VOLTAGE;
float O2_F_A_E_R_V_3_FUEL;
float O2_F_A_E_R_V_3_VOLTAGE;
float O2_F_A_E_R_V_4_FUEL;
float O2_F_A_E_R_V_4_VOLTAGE;
float O2_F_A_E_R_V_5_FUEL;
float O2_F_A_E_R_V_5_VOLTAGE;
float O2_F_A_E_R_V_6_FUEL;
float O2_F_A_E_R_V_6_VOLTAGE;
float O2_F_A_E_R_V_7_FUEL;
float O2_F_A_E_R_V_7_VOLTAGE;
float O2_F_A_E_R_V_8_FUEL;
float O2_F_A_E_R_V_8_VOLTAGE;
float COMMANDED_EGR;
float EGR_ERROR;
float COMMANDED_EVAPORATIVE_PURGE;
float FUEL_TANK_LEVEL_INPUT;
float WARM_UPS_SINCE_CODES_CLEARED;
float DISTANCE_TRAVELED_SINCE_CODES_CLEARED;
float EVAPORATOR_SYSTEM_PRESSURE;
float ABSOLUTE_BAROMETRIC_PRESSURE;
float O2_F_A_E_R_C_1_FUEL;
float O2_F_A_E_R_C_1_CURRENT;
float O2_F_A_E_R_C_2_FUEL;
float O2_F_A_E_R_C_2_CURRENT;
float O2_F_A_E_R_C_3_FUEL;
float O2_F_A_E_R_C_3_CURRENT;
float O2_F_A_E_R_C_4_FUEL;
float O2_F_A_E_R_C_4_CURRENT;
float O2_F_A_E_R_C_5_FUEL;
float O2_F_A_E_R_C_5_CURRENT;
float O2_F_A_E_R_C_6_FUEL;
float O2_F_A_E_R_C_6_CURRENT;
float O2_F_A_E_R_C_7_FUEL;
float O2_F_A_E_R_C_7_CURRENT;
float O2_F_A_E_R_C_8_FUEL;
float O2_F_A_E_R_C_8_CURRENT;
float CATALYST_TEMPERATURE_BANK1_SENSOR1;
float CATALYST_TEMPERATURE_BANK2_SENSOR1;
float CATALYST_TEMPERATURE_BANK1_SENSOR2;
float CATALYST_TEMPERATURE_BANK2_SENSOR2;
float SUPPORTED_PIDS_41_60;
float MONITOR_STATUS;
float CONTROL_MODULE_VOLTAGE;
float ABSOLUTE_LOAD_VALUE;
float FUEL_AIR_COMMANDED_EQUIV_RATIO;
float RELATIVE_THROTTLE_POSITION;
float AMBIENT_AIR_TEMPERATURE;
float ABSOLUTE_THROTTLE_B;
float ABSOLUTE_THROTTLE_C;
float ACCELERATOR_PEDAL_POSITION_D;
float ACCELERATOR_PEDAL_POSITION_E;
float ACCELERATOR_PEDAL_POSITION_F;
float COMMANDED_THROTTLE_ACTUATOR;
float TIME_RUN_WITH_MIL_ON;
float TIME_SINCE_TROUBLE_CODES_CLEARED;
float MAX_VALUES;
float MAX_VALUES_2;
float FUEL_TYPE;
float ETHANOL_FUEL_PERCENT;
float ABSOLUTE_EVAP_SYS_VAPOR_PRESSURE;
float EVAP_SYSTEM_VAPOR_PRESSURE;
float SHORT_TERM_SECONDARY_O2_TRIM_BANK_1_3;
float LONG_TERM_SECONDARY_O2_TRIM_BANK_1_3;
float SHORT_TERM_SECONDARY_O2_TRIM_BANK_2_4;
float LONG_TERM_SECONDARY_O2_TRIM_BANK_2_4;
float FUEL_RAIL_ABSOLUTE_PRESSURE;
float RELATIVE_ACCELERATOR_PEDAL_POSITION;
float HYBRID_BATTERY_PACK_REMAINING_LIFE;
float ENGINE_OIL_TEMPERATURE;
float FUEL_INJECTION_TIMING;
float ENGINE_FUEL_RATE;
float EMISSION_REQUIREMENTS;
float SUPPORTED_PIDS_61_80;
float DEMAND_PERCENT_TORQUE;
float ACTUAL_PERCENT_TORQUE;
float ENGINE_REFERENCE_TORQUE;
float ENGINE_PERCENT_TORQUE_DATA;
float AUXILLARY_IO_SUPPORTED;
float MASS_AIR_FLOW_SENSOR;
float ENGINE_COOLANT_TEMPERATURE;
float INTAKE_AIR_TEMPERATURE_SENSOR;

///////////////////////////////////////////////////////////////////////////
//GLOBAL INTEGERS FOR USE IN PERFORMING MATH AND EXTRACTION OF OBDII DATA//
///////////////////////////////////////////////////////////////////////////
int data0;
int data1;
int data2;
int data3;
int data4;
int data5;
int data6;
int data7;


// OBD CAN MESSAGE IDs
const auto OBD_CAN_BROADCAST_ID    = 0X7DF;
const auto OBD_CAN_REQUEST_ID      = 0x7E0;
const auto OBD_CAN_REPLY_ID_MIN    = 0x7E8;
const auto OBD_CAN_REPLY_ID_MAX    = 0x7EF;

const String key = "YN8B4S3KMEFDM0FT";

// OBD MODES
const auto OBD_MODE_CURRENT_DATA = 0x01;

//const auto OBD_MODE_REQUEST_VEHICLE_DATA = 0x09;

///////////////////////////////////////////////////////////////////////////////////////////////////////
//LIST OF ALL (Almost) MODE 1 PIDS THAT YOU ARE CAPABLE OF POLLING. NOT ALL WILL BE AVAILABLE TO YOU.//
///////////////////////////////////////////////////////////////////////////////////////////////////////

const auto OBD_PID_SUPPORTED_PIDS_01_20                  = 0x00;
const auto OBD_PID_MIL_STATUS                            = 0x01;
const auto OBD_PID_FUEL_SYSTEM_STATUS                    = 0x03;
const auto OBD_PID_ENGINE_LOAD                           = 0x04;
const auto OBD_PID_COOLANT_TEMPERATURE                   = 0x05;
const auto OBD_PID_SHORT_TERM_FUEL_TRIM_BANK_1           = 0x06;
const auto OBD_PID_LONG_TERM_FUEL_TRIM_BANK_1            = 0x07;
const auto OBD_PID_SHORT_TERM_FUEL_TRIM_BANK_2           = 0x08;
const auto OBD_PID_LONG_TERM_FUEL_TRIM_BANK_2            = 0x09;
const auto OBD_PID_FUEL_PRESSURE                         = 0x0a;
const auto OBD_PID_INTAKE_MANIFOLD_PRESSURE              = 0x0b;
const auto OBD_PID_ENGINE_RPM                            = 0x0c;
const auto OBD_PID_VEHICLE_SPEED                         = 0x0d;
const auto OBD_PID_TIMING_ADVANCE                        = 0x0e;
const auto OBD_PID_INTAKE_AIR_TEMPERATURE                = 0x0f;
const auto OBD_PID_MAF_AIR_FLOW_RATE                     = 0x10;
const auto OBD_PID_THROTTLE    	                         = 0x11;
const auto OBD_PID_COMMANDED_SECONDARY_AIR_STATUS        = 0x12;
const auto OBD_PID_O2_SENSORS_PRESENT                    = 0x13;
const auto OBD_PID_O2_V_F_T_1                            = 0x14;
const auto OBD_PID_O2_V_F_T_2                            = 0x15;
const auto OBD_PID_O2_V_F_T_3                            = 0x16;
const auto OBD_PID_O2_V_F_T_4                            = 0x17;
const auto OBD_PID_O2_V_F_T_5                            = 0x18;
const auto OBD_PID_O2_V_F_T_6                            = 0x19;
const auto OBD_PID_O2_V_F_T_7                            = 0x1a;
const auto OBD_PID_O2_V_F_T_8                            = 0x1b;
const auto OBD_PID_OBD_STANDARDS                         = 0x1c;
const auto OBD_PID_ENGINE_RUN_TIME                       = 0x1f;
const auto OBD_PID_SUPPORTED_PIDS_21_40                  = 0x20;
const auto OBD_PID_DISTANCE_TRAVELED_WITH_MIL_ON         = 0x21;
const auto OBD_PID_FUEL_RAIL_PRESSURE                    = 0x22;
const auto OBD_PID_FUEL_RAIL_GAUGE_PRESSURE              = 0x23;
const auto OBD_PID_O2_F_A_E_R_V_1                        = 0x24;
const auto OBD_PID_O2_F_A_E_R_V_2                        = 0x25;
const auto OBD_PID_O2_F_A_E_R_V_3                        = 0x26;
const auto OBD_PID_O2_F_A_E_R_V_4                        = 0x27;
const auto OBD_PID_O2_F_A_E_R_V_5                        = 0x28;
const auto OBD_PID_O2_F_A_E_R_V_6                        = 0x29;
const auto OBD_PID_O2_F_A_E_R_V_7                        = 0x2a;
const auto OBD_PID_O2_F_A_E_R_V_8                        = 0x2b;
const auto OBD_PID_COMMANDED_EGR                         = 0x2c;
const auto OBD_PID_EGR_ERROR                             = 0x2d;
const auto OBD_PID_COMMANDED_EVAPORATIVE_PURGE           = 0x2e;
const auto OBD_PID_FUEL_TANK_LEVEL_INPUT                 = 0x2f;
const auto OBD_PID_WARM_UPS_SINCE_CODES_CLEARED          = 0x30;
const auto OBD_PID_DISTANCE_TRAVELED_SINCE_CODES_CLEARED = 0x31;
const auto OBD_PID_EVAPORATOR_SYSTEM_PRESSURE            = 0x32;
const auto OBD_PID_ABSOLUTE_BAROMETRIC_PRESSURE          = 0x33;
const auto OBD_PID_O2_F_A_E_R_1_C                        = 0x34;
const auto OBD_PID_O2_F_A_E_R_2_C                        = 0x35;
const auto OBD_PID_O2_F_A_E_R_3_C                        = 0x36;
const auto OBD_PID_O2_F_A_E_R_4_C                        = 0x37;
const auto OBD_PID_O2_F_A_E_R_5_C                        = 0x38;
const auto OBD_PID_O2_F_A_E_R_6_C                        = 0x39;
const auto OBD_PID_O2_F_A_E_R_7_C                        = 0x3a;
const auto OBD_PID_O2_F_A_E_R_8_C                        = 0x3b;
const auto OBD_PID_CATALYST_TEMPERATURE_BANK1_SENSOR1    = 0x3c;
const auto OBD_PID_CATALYST_TEMPERATURE_BANK2_SENSOR1    = 0x3d;
const auto OBD_PID_CATALYST_TEMPERATURE_BANK1_SENSOR2    = 0x3e;
const auto OBD_PID_CATALYST_TEMPERATURE_BANK2_SENSOR2    = 0x3f;
const auto OBD_PID_SUPPORTED_PIDS_41_60                  = 0x40;
const auto OBD_PID_MONITOR_STATUS                        = 0x41;
const auto OBD_PID_CONTROL_MODULE_VOLTAGE                = 0x42;
const auto OBD_PID_ABSOLUTE_LOAD_VALUE                   = 0x43;
const auto OBD_PID_FUEL_AIR_COMMANDED_EQUIV_RATIO        = 0x44;
const auto OBD_PID_RELATIVE_THROTTLE_POSITION            = 0x45;
const auto OBD_PID_AMBIENT_AIR_TEMPERATURE               = 0x46;
const auto OBD_PID_ABSOLUTE_THROTTLE_B                   = 0x47;
const auto OBD_PID_ABSOLUTE_THROTTLE_C                   = 0x48;
const auto OBD_PID_ACCELERATOR_PEDAL_POSITION_D          = 0x49;
const auto OBD_PID_ACCELERATOR_PEDAL_POSITION_E          = 0x4a;
const auto OBD_PID_ACCELERATOR_PEDAL_POSITION_F          = 0x4b;
const auto OBD_PID_COMMANDED_THROTTLE_ACTUATOR           = 0x4c;
const auto OBD_PID_TIME_RUN_WITH_MIL_ON                  = 0x4d;
const auto OBD_PID_TIME_SINCE_TROUBLE_CODES_CLEARED      = 0x4e;
const auto OBD_PID_MAX_VALUES                            = 0x4f;
const auto OBD_PID_MAX_VALUES_2                          = 0x50;
const auto OBD_PID_FUEL_TYPE                             = 0x51;
const auto OBD_PID_ETHANOL_FUEL_PERCENT                  = 0x52;
const auto OBD_PID_ABSOLUTE_EVAP_SYS_VAPOR_PRESSURE      = 0x53;
const auto OBD_PID_EVAP_SYSTEM_VAPOR_PRESSURE            = 0x54;
const auto OBD_PID_SHORT_TERM_SECONDARY_O2_TRIM_BANK_1_3 = 0x55;
const auto OBD_PID_LONG_TERM_SECONDARY_O2_TRIM_BANK_1_3  = 0x56;
const auto OBD_PID_SHORT_TERM_SECONDARY_O2_TRIM_BANK_2_4 = 0x57;
const auto OBD_PID_LONG_TERM_SECONDARY_O2_TRIM_BANK_2_4  = 0x58;
const auto OBD_PID_FUEL_RAIL_ABSOLUTE_PRESSURE           = 0x59;
const auto OBD_PID_RELATIVE_ACCELERATOR_PEDAL_POSITION   = 0x5a;
const auto OBD_PID_HYBRID_BATTERY_PACK_REMAINING_LIFE    = 0x5b;
const auto OBD_PID_ENGINE_OIL_TEMPERATURE                = 0x5c;
const auto OBD_PID_FUEL_INJECTION_TIMING                 = 0x5d;
const auto OBD_PID_ENGINE_FUEL_RATE                      = 0x5e;
const auto OBD_PID_EMISSION_REQUIREMENTS                 = 0x5f;
const auto OBD_PID_SUPPORTED_PIDS_61_80                  = 0x60;
const auto OBD_PID_DEMAND_PERCENT_TORQUE                 = 0x61;
const auto OBD_PID_ACTUAL_PERCENT_TORQUE                 = 0x62;
const auto OBD_PID_ENGINE_REFERENCE_TORQUE               = 0x63;
const auto OBD_PID_ENGINE_PERCENT_TORQUE_DATA            = 0x64;
const auto OBD_PID_AUXILLARY_IO_SUPPORTED                = 0x65;
const auto OBD_PID_MASS_AIR_FLOW_SENSOR                  = 0x66;
const auto OBD_PID_ENGINE_COOLANT_TEMPERATURE            = 0x67;
const auto OBD_PID_INTAKE_AIR_TEMPERATURE_SENSOR         = 0x68;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////
//SUM THE TOTAL AMOUNT OF PIDS YOU WOULD LIKE TO REQUEST AND PLACE THAT IN const size_t NUM_PIDS_TO_REQUEST// 
/////////////////////////////////////////////////////////////////////////////////////////////////////////////

const size_t NUM_PIDS_TO_REQUEST = 102;

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//COMMENT OUT OR REMOVE THE PIDS THAT YOU DO NOT HAVE TO INCREASE EFFECIENCY BUT BE SURE TO UPDATE THE ABOVE CONSTANT//
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

const uint8_t pidsToRequest[NUM_PIDS_TO_REQUEST] = {
    
OBD_PID_SUPPORTED_PIDS_01_20,
OBD_PID_MIL_STATUS,
OBD_PID_FUEL_SYSTEM_STATUS,
OBD_PID_ENGINE_LOAD,
OBD_PID_COOLANT_TEMPERATURE,
OBD_PID_SHORT_TERM_FUEL_TRIM_BANK_1,
OBD_PID_LONG_TERM_FUEL_TRIM_BANK_1,
OBD_PID_SHORT_TERM_FUEL_TRIM_BANK_2,
OBD_PID_LONG_TERM_FUEL_TRIM_BANK_2,
OBD_PID_FUEL_PRESSURE,
OBD_PID_INTAKE_MANIFOLD_PRESSURE,
OBD_PID_ENGINE_RPM,
OBD_PID_VEHICLE_SPEED,
OBD_PID_TIMING_ADVANCE,
OBD_PID_INTAKE_AIR_TEMPERATURE,
OBD_PID_MAF_AIR_FLOW_RATE,
OBD_PID_THROTTLE,
OBD_PID_COMMANDED_SECONDARY_AIR_STATUS,
OBD_PID_O2_SENSORS_PRESENT,
OBD_PID_O2_V_F_T_1,
OBD_PID_O2_V_F_T_2,
OBD_PID_O2_V_F_T_3,
OBD_PID_O2_V_F_T_4,
OBD_PID_O2_V_F_T_5,
OBD_PID_O2_V_F_T_6,
OBD_PID_O2_V_F_T_7,
OBD_PID_O2_V_F_T_8,
OBD_PID_OBD_STANDARDS,
OBD_PID_ENGINE_RUN_TIME,
OBD_PID_SUPPORTED_PIDS_21_40,
OBD_PID_DISTANCE_TRAVELED_WITH_MIL_ON,
OBD_PID_FUEL_RAIL_PRESSURE,
OBD_PID_FUEL_RAIL_GAUGE_PRESSURE,
OBD_PID_O2_F_A_E_R_V_1,
OBD_PID_O2_F_A_E_R_V_2,
OBD_PID_O2_F_A_E_R_V_3,
OBD_PID_O2_F_A_E_R_V_4,
OBD_PID_O2_F_A_E_R_V_5,
OBD_PID_O2_F_A_E_R_V_6,
OBD_PID_O2_F_A_E_R_V_7,
OBD_PID_O2_F_A_E_R_V_8,
OBD_PID_COMMANDED_EGR,
OBD_PID_EGR_ERROR,
OBD_PID_COMMANDED_EVAPORATIVE_PURGE,
OBD_PID_FUEL_TANK_LEVEL_INPUT,
OBD_PID_WARM_UPS_SINCE_CODES_CLEARED,
OBD_PID_DISTANCE_TRAVELED_SINCE_CODES_CLEARED,
OBD_PID_EVAPORATOR_SYSTEM_PRESSURE,
OBD_PID_ABSOLUTE_BAROMETRIC_PRESSURE,
OBD_PID_O2_F_A_E_R_1_C,
OBD_PID_O2_F_A_E_R_2_C,
OBD_PID_O2_F_A_E_R_3_C,
OBD_PID_O2_F_A_E_R_4_C,
OBD_PID_O2_F_A_E_R_5_C,
OBD_PID_O2_F_A_E_R_6_C,
OBD_PID_O2_F_A_E_R_7_C,
OBD_PID_O2_F_A_E_R_8_C,
OBD_PID_CATALYST_TEMPERATURE_BANK1_SENSOR1,
OBD_PID_CATALYST_TEMPERATURE_BANK2_SENSOR1,
OBD_PID_CATALYST_TEMPERATURE_BANK1_SENSOR2,
OBD_PID_CATALYST_TEMPERATURE_BANK2_SENSOR2,
OBD_PID_SUPPORTED_PIDS_41_60,
OBD_PID_MONITOR_STATUS,
OBD_PID_CONTROL_MODULE_VOLTAGE,
OBD_PID_ABSOLUTE_LOAD_VALUE,
OBD_PID_FUEL_AIR_COMMANDED_EQUIV_RATIO,
OBD_PID_RELATIVE_THROTTLE_POSITION,
OBD_PID_AMBIENT_AIR_TEMPERATURE,
OBD_PID_ABSOLUTE_THROTTLE_B,
OBD_PID_ABSOLUTE_THROTTLE_C,
OBD_PID_ACCELERATOR_PEDAL_POSITION_D,
OBD_PID_ACCELERATOR_PEDAL_POSITION_E,
OBD_PID_ACCELERATOR_PEDAL_POSITION_F,
OBD_PID_COMMANDED_THROTTLE_ACTUATOR,
OBD_PID_TIME_RUN_WITH_MIL_ON,
OBD_PID_TIME_SINCE_TROUBLE_CODES_CLEARED,
OBD_PID_MAX_VALUES,
OBD_PID_MAX_VALUES_2,
OBD_PID_FUEL_TYPE,
OBD_PID_ETHANOL_FUEL_PERCENT,
OBD_PID_ABSOLUTE_EVAP_SYS_VAPOR_PRESSURE,
OBD_PID_EVAP_SYSTEM_VAPOR_PRESSURE,
OBD_PID_SHORT_TERM_SECONDARY_O2_TRIM_BANK_1_3,
OBD_PID_LONG_TERM_SECONDARY_O2_TRIM_BANK_1_3,
OBD_PID_SHORT_TERM_SECONDARY_O2_TRIM_BANK_2_4,
OBD_PID_LONG_TERM_SECONDARY_O2_TRIM_BANK_2_4,
OBD_PID_FUEL_RAIL_ABSOLUTE_PRESSURE,
OBD_PID_RELATIVE_ACCELERATOR_PEDAL_POSITION,
OBD_PID_HYBRID_BATTERY_PACK_REMAINING_LIFE,
OBD_PID_ENGINE_OIL_TEMPERATURE,
OBD_PID_FUEL_INJECTION_TIMING,
OBD_PID_ENGINE_FUEL_RATE,
OBD_PID_EMISSION_REQUIREMENTS,
OBD_PID_SUPPORTED_PIDS_61_80,
OBD_PID_DEMAND_PERCENT_TORQUE,
OBD_PID_ACTUAL_PERCENT_TORQUE,
OBD_PID_ENGINE_REFERENCE_TORQUE,
OBD_PID_ENGINE_PERCENT_TORQUE_DATA,
OBD_PID_AUXILLARY_IO_SUPPORTED,
OBD_PID_MASS_AIR_FLOW_SENSOR,
OBD_PID_ENGINE_COOLANT_TEMPERATURE,
OBD_PID_INTAKE_AIR_TEMPERATURE_SENSOR

};
    
    
uint8_t pidIndex = NUM_PIDS_TO_REQUEST - 1;

String dumpForPublish;

auto *obdLoopFunction = sendObdRequest;
unsigned long transitionTime = 0;
uint8_t lastMessageData[8];

void setup() {
    Blynk.begin(auth);
	Serial.begin(115200);
	carloop.begin();
	Particle.connect();
	transitionTime = millis();
}



void loop() {
	
	carloop.update();
	printValuesAtInterval();
	publishValuesAtInterval();
	obdLoopFunction();
	waitForObdResponse();
        math();

}


/*************** Begin: OBD Loop Functions ****************/

/* For help understanding the OBD Query format over CAN bus,
 * see: https://en.wikipedia.org/wiki/OBD-II_PIDs#Query
 *
 * For help understanding why the first data byte is 0x02,
 * see: http://hackaday.com/2013/10/29/can-hacking-protocols/
 *
 * For help understanding modes and PIDs,
 * see: https://en.wikipedia.org/wiki/OBD-II_PIDs#Modes
 * and: https://en.wikipedia.org/wiki/OBD-II_PIDs#Standard_PIDs
 */
void sendObdRequest() {
	pidIndex = (pidIndex + 1) % NUM_PIDS_TO_REQUEST;

	CANMessage message;
	message.id = OBD_CAN_BROADCAST_ID;
	message.len = 8; // just always use 8
	message.data[0] = 0x02; // 0 = single-frame format, 2  = num data bytes
	message.data[1] = OBD_MODE_CURRENT_DATA; // OBD MODE
	message.data[2] = pidsToRequest[pidIndex]; // OBD PID

	carloop.can().transmit(message);

	obdLoopFunction = waitForObdResponse;
	transitionTime = millis();
}

void waitForObdResponse() {
	if (millis() - transitionTime >= 10) {
		obdLoopFunction = delayUntilNextRequest;
		transitionTime = millis();
		return;
	}
    bool responseReceived = false;
	String dump;
	CANMessage message;
	while (carloop.can().receive(message)) {
		canMessageCount++;
		if (message.id == 0x130) {
			if (!byteArray8Equal(message.data, lastMessageData)) {
				memcpy(lastMessageData, message.data, 8);
			}
		} else {
			if (message.id >= OBD_CAN_REPLY_ID_MIN &&
					message.id <= OBD_CAN_REPLY_ID_MAX &&
					message.data[2] == pidsToRequest[pidIndex]) {
				    responseReceived = true;
                    data0 = message.data[0];
                    data1 = message.data[1];
			        data2 = message.data[2];
                    data3 = message.data[3];
                    data4 = message.data[4];
                    data5 = message.data[5];
                    data6 = message.data[6];
                    data7 = message.data[7];
                    return;
					}
		return;
		}
	return;
	}
}


void delayUntilNextRequest() {
	if (millis() - transitionTime >= 8) {
		obdLoopFunction = sendObdRequest;
		transitionTime = millis();
	}
}

/*************** End: OBD Loop Functions ****************/


void printValuesAtInterval() {
	static const unsigned long interval = 500;
	static unsigned long lastDisplay = 0;
	if (millis() - lastDisplay < interval) {
		return;
	}
	lastDisplay = millis();
	printValues();
}

void printValues() {

/////////////////////////////
//PRINT VALUES FOR DEBUGING//
/////////////////////////////

//    Serial.print("Engine Load: ");
//    Serial.println(ENGINE_LOAD);
    
 
}

void publishValuesAtInterval() {
    static const unsigned long interval2 = 10000;
	static unsigned long lastDisplay2 = 0;
    if(millis() - lastDisplay2 < interval2) {
        return;
    }
    lastDisplay2 = millis();
    publishValues();
    blynkValues();
}


///////////////////////////////////////////////////
//FUNCTION TO SEND DATA TO BYNK FOR VISUALIZATION//
//THESE PARAMETERS ARE HERE AS AN EXAMPLE AND ARE//
//AVAILABLE ON MY 2016 MIATA///////////////////////

void blynkValues() {
    //TODO: ONLY SEND DATA WHEN THE ENGINE IS ON
            Blynk.run();
            String StringMIL_STATUS                             = String(MIL_STATUS);
            String StringFUEL_SYSTEM_STATUS                     = String(FUEL_SYSTEM_STATUS);
	    String StringENGINE_LOAD                            = String(ENGINE_LOAD);
	    String StringENGINE_COOLANT_TEMPERATURE             = String(ENGINE_COOLANT_TEMPERATURE);
	    String StringSHORT_TERM_FUEL_TRIM_BANK_1            = String(SHORT_TERM_FUEL_TRIM_BANK_1);
	    String StringLONG_TERM_FUEL_TRIM_BANK_1             = String(LONG_TERM_FUEL_TRIM_BANK_1);
	    String StringINTAKE_MANIFOLD_PRESSURE               = String(INTAKE_MANIFOLD_PRESSURE);
	    String StringENGINE_RPM                             = String(ENGINE_RPM);
	    String StringVEHICLE_SPEED                          = String(VEHICLE_SPEED);
	    String StringTIMING_ADVANCE                         = String(TIMING_ADVANCE);
	    String StringINTAKE_AIR_TEMPERATURE                 = String(INTAKE_AIR_TEMPERATURE);
	    String StringMAF_AIR_FLOW_RATE                      = String(MAF_AIR_FLOW_RATE);
	    String StringTHROTTLE                               = String(THROTTLE);
	    String StringO2_V_6                                 = String(O2_V_6);
	    String StringO2_T_6                                 = String(O2_T_6);
	    String StringDISTANCE_TRAVELED_WITH_MIL_ON          = String(DISTANCE_TRAVELED_WITH_MIL_ON);
	    String StringCOMMANDED_EVAPORATIVE_PURGE            = String(COMMANDED_EVAPORATIVE_PURGE);
	    String StringFUEL_TANK_LEVEL_INPUT                  = String(FUEL_TANK_LEVEL_INPUT);
	    String StringWARM_UPS_SINCE_CODES_CLEARED           = String(WARM_UPS_SINCE_CODES_CLEARED);
	    String StringDISTANCE_TRAVELED_SINCE_CODES_CLEARED  = String(DISTANCE_TRAVELED_SINCE_CODES_CLEARED);
	    String StringEVAPORATOR_SYSTEM_PRESSURE             = String(EVAPORATOR_SYSTEM_PRESSURE);
	    String StringABSOLUTE_BAROMETRIC_PRESSURE           = String(ABSOLUTE_BAROMETRIC_PRESSURE);
	    String StringO2_F_A_E_R_C_1_FUEL                    = String(O2_F_A_E_R_C_1_FUEL);
	    String StringCATALYST_TEMPERATURE_BANK1_SENSOR1     = String(CATALYST_TEMPERATURE_BANK1_SENSOR1);
	    String StringCONTROL_MODULE_VOLTAGE                 = String(CONTROL_MODULE_VOLTAGE);
	    String StringABSOLUTE_LOAD_VALUE                    = String(ABSOLUTE_LOAD_VALUE);
	    String StringFUEL_AIR_COMMANDED_EQUIV_RATIO         = String(FUEL_AIR_COMMANDED_EQUIV_RATIO);
	    String StringRELATIVE_THROTTLE_POSITION             = String(RELATIVE_THROTTLE_POSITION);
	    String StringAMBIENT_AIR_TEMPERATURE                = String(AMBIENT_AIR_TEMPERATURE);
	    String StringABSOLUTE_THROTTLE_B                    = String(ABSOLUTE_THROTTLE_B);
	    String StringACCELERATOR_PEDAL_POSITION_D           = String(ACCELERATOR_PEDAL_POSITION_D);
	    String StringACCELERATOR_PEDAL_POSITION_E           = String(ACCELERATOR_PEDAL_POSITION_E);
	    String StringFUEL_TYPE                              = String(FUEL_TYPE);
	    String StringFUEL_RAIL_ABSOLUTE_PRESSURE            = String(FUEL_RAIL_ABSOLUTE_PRESSURE);
	    
	    ////////////////////////////
	    //PUBLISH STRINGS TO BLYNK//
	    ////////////////////////////
	    Blynk.virtualWrite(V0, StringMIL_STATUS);
	    Blynk.virtualWrite(V1, StringFUEL_SYSTEM_STATUS);
	    Blynk.virtualWrite(V2, StringENGINE_LOAD);
	    Blynk.virtualWrite(V3, StringENGINE_COOLANT_TEMPERATURE);
	    Blynk.virtualWrite(V4, StringSHORT_TERM_FUEL_TRIM_BANK_1);
	    Blynk.virtualWrite(V5, StringLONG_TERM_FUEL_TRIM_BANK_1);
	    Blynk.virtualWrite(V6, StringINTAKE_MANIFOLD_PRESSURE);
	    Blynk.virtualWrite(V7, StringENGINE_RPM);
	    Blynk.virtualWrite(V8, StringVEHICLE_SPEED);
	    Blynk.virtualWrite(V9, StringTIMING_ADVANCE);
	    Blynk.virtualWrite(V10, StringINTAKE_AIR_TEMPERATURE);
	    Blynk.virtualWrite(V11, StringMAF_AIR_FLOW_RATE);
	    Blynk.virtualWrite(V12, StringTHROTTLE);
	    Blynk.virtualWrite(V13, StringO2_V_6);
	    Blynk.virtualWrite(V14, StringO2_T_6);
	    Blynk.virtualWrite(V15, StringDISTANCE_TRAVELED_WITH_MIL_ON);
	    Blynk.virtualWrite(V16, StringCOMMANDED_EVAPORATIVE_PURGE);
	    Blynk.virtualWrite(V17, StringFUEL_TANK_LEVEL_INPUT);
	    Blynk.virtualWrite(V18, StringWARM_UPS_SINCE_CODES_CLEARED);
	    Blynk.virtualWrite(V19, StringDISTANCE_TRAVELED_SINCE_CODES_CLEARED);
	    Blynk.virtualWrite(V20, StringEVAPORATOR_SYSTEM_PRESSURE);
	    Blynk.virtualWrite(V21, StringABSOLUTE_BAROMETRIC_PRESSURE);
	    Blynk.virtualWrite(V22, StringO2_F_A_E_R_C_1_FUEL);
	    Blynk.virtualWrite(V23, StringCATALYST_TEMPERATURE_BANK1_SENSOR1);
	    Blynk.virtualWrite(V24, StringCONTROL_MODULE_VOLTAGE);
	    Blynk.virtualWrite(V25, StringABSOLUTE_LOAD_VALUE);
	    Blynk.virtualWrite(V26, StringFUEL_AIR_COMMANDED_EQUIV_RATIO);
	    Blynk.virtualWrite(V27, StringRELATIVE_THROTTLE_POSITION);
	    Blynk.virtualWrite(V28, StringAMBIENT_AIR_TEMPERATURE);
	    Blynk.virtualWrite(V29, StringABSOLUTE_THROTTLE_B);
	    Blynk.virtualWrite(V30, StringACCELERATOR_PEDAL_POSITION_D);
	    Blynk.virtualWrite(V31, StringACCELERATOR_PEDAL_POSITION_E);
	    Blynk.virtualWrite(V32, StringFUEL_TYPE);
	    Blynk.virtualWrite(V33, StringFUEL_RAIL_ABSOLUTE_PRESSURE);

}

//////////////////////////////////////
//ALMOST EVERY MODE 1 OBDII PID MATH//
//////////////////////////////////////

void math() {

//void mathMIL_STATUS() {
    
    if (data2 == 2) {
        float MILStatus;
        MILStatus = (data3>>7) & 1;
        MIL_STATUS = MILStatus;
    }
//}

//void mathFUEL_SYSTEM_STATUS() {
    
    if (data2 == 3) {
        float fuelSystemStatus;
        fuelSystemStatus = data3;
        FUEL_SYSTEM_STATUS = fuelSystemStatus;
    }
//}

//void mathENGINE_LOAD() {
    
    if (data2 == 4) {
        float load;
        load = (data3)/2.55;
        ENGINE_LOAD = load;
    }
//}

//void mathENGINE_COOLANT_TEMPERATURE() {
    
    if (data2 == 5) {
        float coolantTemp;
        coolantTemp = (data3)-40;
        ENGINE_COOLANT_TEMPERATURE = coolantTemp;
    }
//}

//void mathSHORT_TERM_FUEL_TRIM_BANK_1() {
    
    if (data2 == 6) {
        float stFuelTrimBank1;
        stFuelTrimBank1 = (data3/1.28 - 100);
        SHORT_TERM_FUEL_TRIM_BANK_1 = stFuelTrimBank1;
    }
//}

//void mathLONG_TERM_FUEL_TRIM_BANK_1() {
    
    if (data2 == 7) {
        float ltFuelTrimBank1;
        ltFuelTrimBank1 = (data3/1.28 - 100);
        LONG_TERM_FUEL_TRIM_BANK_1 = ltFuelTrimBank1;
    }
//}

//void mathSHORT_TERM_FUEL_TRIM_BANK_2() {
    
    if (data2 == 8) {
        float stFuelTrimBank2;
        stFuelTrimBank2 = (data3/1.28 - 100);
        SHORT_TERM_FUEL_TRIM_BANK_2 = stFuelTrimBank2;
    }
//}

//void mathLONG_TERM_FUEL_TRIM_BANK_2() {
    
    if (data2 == 9) {
        float ltFuelTrimBank2;
        ltFuelTrimBank2 = (data3/1.28 - 100);
        LONG_TERM_FUEL_TRIM_BANK_2 = ltFuelTrimBank2;
    }
//}

//void mathFUEL_PRESSURE() {
    
    if (data2 == 10) {
        float fuelPressure;
        fuelPressure = (data3*3);
        FUEL_PRESSURE = fuelPressure;
    }
//}

//void mathINTAKE_MANIFOLD_PRESSURE() {
    
    if (data2 == 11) {
        float intakeManifoldPressure;
        intakeManifoldPressure = (data3);
        INTAKE_MANIFOLD_PRESSURE = intakeManifoldPressure;
    }
//}

//void mathENGINE_RPM() {


    if (data2 == 12) {
        float RPM1;
        float RPM2;
        RPM1 = data3;
        RPM2 = data4;
        ENGINE_RPM = ((RPM1*256)+RPM2)/4;
    }
//}

//void mathVEHICLE_SPEED() {
    
    if (data2 == 13) {
        float vehicleSpeed;
        vehicleSpeed = (data3);
        VEHICLE_SPEED = vehicleSpeed;
    }
//}

//void mathTIMING_ADVANCE() {
	
	if (data2 == 14) {
	    float timingAdvance;
		timingAdvance = (data3/2 - 64);
		TIMING_ADVANCE = timingAdvance;
	}
//}

//void mathINTAKE_AIR_TEMPERATURE() {
	
	if (data2 == 15) {
	    float intakeAirTemperature;
		intakeAirTemperature = (data3 - 40);
		INTAKE_AIR_TEMPERATURE = intakeAirTemperature;
	}
//}

//void mathMAF_AIR_FLOW_RATE() {
	
	if (data2 == 16) {
	    float MAFAirFlowRate1;
	    float MAFAirFlowRate2;
		MAFAirFlowRate1 = data3;
		MAFAirFlowRate2 = data4;
		MAF_AIR_FLOW_RATE = ((MAFAirFlowRate1*256)+MAFAirFlowRate2)/4;
	}
//}

//void mathTHROTTLE() {
    
    if (data2 == 17) {
        float throttle;
        throttle = (data3)/2.55;
        THROTTLE = throttle;
    }
//}

//void mathCOMMANDED_SECONDARY_AIR_STATUS() {
    
    if (data2 == 18) {
        float commandedSecondaryAirStatus;
        commandedSecondaryAirStatus = (data3);
        COMMANDED_SECONDARY_AIR_STATUS = commandedSecondaryAirStatus;
    }
//}

//void mathO2_V_T_1(){
    
    if (data2 == 20) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_1 = o2Voltage1;
        O2_T_1 = o2Trim1;
    }
//}

//void mathO2_V_T_2(){
    
    if (data2 == 21) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_2 = o2Voltage1;
        O2_T_2 = o2Trim1;
    }
//}

//void mathO2_V_T_3(){
    
    if (data2 == 22) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_3 = o2Voltage1;
        O2_T_3 = o2Trim1;
    }
//}

//void mathO2_V_T_4(){
    
    if (data2 == 23) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_4 = o2Voltage1;
        O2_T_4 = o2Trim1;
    }
//}

//void mathO2_V_T_5(){

    if (data2 == 24) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_5 = o2Voltage1;
        O2_T_5 = o2Trim1;
    }
//}

//void mathO2_V_T_6(){
    
    if (data2 == 25) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_6 = o2Voltage1;
        O2_T_6 = o2Trim1;
    }
//}

//void mathO2_V_T_7(){
    
    if (data2 == 26) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_7 = o2Voltage1;
        O2_T_7 = o2Trim1;
    }
//}

//void mathO2_V_T_8(){
    
    if (data2 == 27) {
        float o2Voltage1;
        float o2Trim1;
        o2Voltage1 = data3/200;
        o2Trim1 = data4/1.28-100;
        O2_V_8 = o2Voltage1;
        O2_T_8 = o2Trim1;
    }
//}

//void mathENGINE_RUN_TIME() {
    
    if (data2 == 31) {
        float engineRunTime1;
        float engineRunTime2;
        engineRunTime1 = data3;
        engineRunTime2 = data4;
        ENGINE_RUN_TIME = (engineRunTime1*256+engineRunTime2);
    }
//}

//void mathDISTANCE_TRAVELED_WITH_MIL_ON() {
    
    if (data2 == 33) {
        float distanceTraveledWithMILOn1;
        float distanceTraveledWithMILOn2;
        distanceTraveledWithMILOn1 = data3;
        distanceTraveledWithMILOn2 = data4;
        DISTANCE_TRAVELED_WITH_MIL_ON = (distanceTraveledWithMILOn1*256+distanceTraveledWithMILOn2);
    }
//}

//void mathFUEL_RAIL_PRESSURE() {
    
    if (data2 == 34) {
        float fuelRailPressureA;
        float fuelRailPressureB;
        fuelRailPressureA = data3;
        fuelRailPressureB = data4;
        FUEL_RAIL_PRESSURE = 0.079*(256*fuelRailPressureA+fuelRailPressureB);
    }
//}

//void mathFUEL_RAIL_GAUGE_PRESSURE() {
    
    if (data2 == 35) {
        float fuelRailGaugePressureA;
        float fuelRailGaugePressureB;
        fuelRailGaugePressureA = data3;
        fuelRailGaugePressureB = data4;
        FUEL_RAIL_GAUGE_PRESSURE = 10*(256*fuelRailGaugePressureA+fuelRailGaugePressureB);
    }
//}

//void mathOBD_PID_O2_F_A_E_R_V_1() {
    
    if (data2 == 36) {
        float fuelAirRatioA;
        float fuelAirRatioB;
        float voltageC;
        float voltageD;
        fuelAirRatioA = data3;
        fuelAirRatioB = data4;
        voltageC = data5;
        voltageD = data6;
        O2_F_A_E_R_V_1_FUEL = (2/65536)*(256*fuelAirRatioA+fuelAirRatioB);
        O2_F_A_E_R_V_1_VOLTAGE = (8/65536)*(256*voltageC+voltageD);
        
    }
//}

//void mathOBD_PID_O2_F_A_E_R_V_2() {
    
    if (data2 == 37) {
        float fuelAirRatioA;
        float fuelAirRatioB;
        float voltageC;
        float voltageD;
        fuelAirRatioA = data3;
        fuelAirRatioB = data4;
        voltageC = data5;
        voltageD = data6;
        O2_F_A_E_R_V_2_FUEL = (2/65536)*(256*fuelAirRatioA+fuelAirRatioB);
        O2_F_A_E_R_V_2_VOLTAGE = (8/65536)*(256*voltageC+voltageD);
        
    }
//}

//void mathOBD_PID_O2_F_A_E_R_V_3() {
    
    if (data2 == 38) {
        float fuelAirRatioA;
        float fuelAirRatioB;
        float voltageC;
        float voltageD;
        fuelAirRatioA = data3;
        fuelAirRatioB = data4;
        voltageC = data5;
        voltageD = data6;
        O2_F_A_E_R_V_3_FUEL = (2/65536)*(256*fuelAirRatioA+fuelAirRatioB);
...

This file has been truncated, please download it to see its full contents.

/*
 * Copyright 2016 Emerson Garland
 * Free to modify, share and do whatever, just give me credit if you like it!
 *
 * This code will loop over requesting PID availablility and print all parameters available.
 * Monitor you com port (ensure you've installed necessary drivers!) using your favorite tool, program below is set to 115200 baud.
 * Reference https://en.wikipedia.org/wiki/OBD-II_PIDs#Mode_1_PID_00 for pid info.
 *
 *
 * Be sure to include carloop library via the web ide. Libraries>(search Carloop)>add to existing app.
 *
 *
 * Make sure to include base85.h in the ide.
 */




//#include "carloop.h"
#include "base85.h"


SYSTEM_MODE(SEMI_AUTOMATIC);
SYSTEM_THREAD(ENABLED);

void sendObdRequest();
void waitForObdResponse();
void delayUntilNextRequest();
void printValuesAtInterval();
void publishValuesAtInterval();
void printValues();


String dumpMessage(const CANMessage &message);
bool byteArray8Equal(uint8_t a1[8], uint8_t a2[8]);

Carloop<CarloopRevision2> carloop;

int canMessageCount = 0;

///////////////////////////////////////////////////////////////////////////
//GLOBAL INTEGERS FOR USE IN PERFORMING MATH AND EXTRACTION OF OBDII DATA//
///////////////////////////////////////////////////////////////////////////
int data0;
int data1;
int data2;
int data3;
int data4;
int data5;
int data6;
int data7;

int PID_Array[] = {data3, data4, data5, data6};


int AvailablePID_1_20[32];
int AvailablePID_21_40[32];
int AvailablePID_41_60[32];
int AvailablePID_61_80[32];

// OBD CAN MESSAGE IDs
const auto OBD_CAN_BROADCAST_ID    = 0X7DF;
const auto OBD_CAN_REQUEST_ID      = 0x7E0;
const auto OBD_CAN_REPLY_ID_MIN    = 0x7E8;
const auto OBD_CAN_REPLY_ID_MAX    = 0x7EF;

// OBD MODES
const auto OBD_MODE_CURRENT_DATA = 0x01;


///////////////////////////////////////////////////////////////////////////////
//LIST OF ALL MODE 1 AVAILABLE PIDS POLLING. NOT ALL MAY BE AVAILABLE TO YOU.//
///////////////////////////////////////////////////////////////////////////////

const auto OBD_PID_SUPPORTED_PIDS_01_20                  = 0x00;
const auto OBD_PID_SUPPORTED_PIDS_21_40                  = 0x20;
const auto OBD_PID_SUPPORTED_PIDS_41_60                  = 0x40;
const auto OBD_PID_SUPPORTED_PIDS_61_80                  = 0x60;

/////////////////////////////////////////////////////////////////////////////////////////////////////////////
//SUM THE TOTAL AMOUNT OF PIDS YOU WOULD LIKE TO REQUEST AND PLACE THAT IN const size_t NUM_PIDS_TO_REQUEST// 
/////////////////////////////////////////////////////////////////////////////////////////////////////////////

const size_t NUM_PIDS_TO_REQUEST = 4;

///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
//COMMENT OUT OR REMOVE THE PIDS THAT YOU DO NOT HAVE TO INCREASE EFFECIENCY BUT BE SURE TO UPDATE THE ABOVE CONSTANT//
///////////////////////////////////////////////////////////////////////////////////////////////////////////////////////

const uint8_t pidsToRequest[NUM_PIDS_TO_REQUEST] = {
    
OBD_PID_SUPPORTED_PIDS_01_20,
OBD_PID_SUPPORTED_PIDS_21_40,
OBD_PID_SUPPORTED_PIDS_41_60,
OBD_PID_SUPPORTED_PIDS_61_80

};
    
    
uint8_t pidIndex = NUM_PIDS_TO_REQUEST - 1;

String dumpForPublish;

auto *obdLoopFunction = sendObdRequest;
unsigned long transitionTime = 0;
uint8_t lastMessageData[8];

void setup() {

	Serial.begin(115200);
	carloop.begin();
	Particle.connect();
	transitionTime = millis();
}



void loop() {
	
	carloop.update();
	printValuesAtInterval();
	obdLoopFunction();
	waitForObdResponse();
    math();
    
}


/*************** Begin: OBD Loop Functions ****************/

void sendObdRequest() {
	pidIndex = (pidIndex + 1) % NUM_PIDS_TO_REQUEST;

	CANMessage message;
	message.id = OBD_CAN_BROADCAST_ID;
	message.len = 8; // just always use 8
	message.data[0] = 0x02; // 0 = single-frame format, 2  = num data bytes
	message.data[1] = OBD_MODE_CURRENT_DATA; // OBD MODE
	message.data[2] = pidsToRequest[pidIndex]; // OBD PID

	carloop.can().transmit(message);

	obdLoopFunction = waitForObdResponse;
	transitionTime = millis();
}

void waitForObdResponse() {
	if (millis() - transitionTime >= 10) {
		obdLoopFunction = delayUntilNextRequest;
		transitionTime = millis();
		return;
	}
    bool responseReceived = false;
	String dump;
	CANMessage message;
	while (carloop.can().receive(message)) {
		canMessageCount++;
		if (message.id == 0x130) {
			if (!byteArray8Equal(message.data, lastMessageData)) {
				memcpy(lastMessageData, message.data, 8);
			}
		} else {
			if (message.id >= OBD_CAN_REPLY_ID_MIN &&
					message.id <= OBD_CAN_REPLY_ID_MAX &&
					message.data[2] == pidsToRequest[pidIndex]) {
				    responseReceived = true;
				    //Serial.println("response recieved");
                    data0 = message.data[0];
                    data1 = message.data[1];
			        data2 = message.data[2];
                    data3 = message.data[3];
                    data4 = message.data[4];
                    data5 = message.data[5];
                    data6 = message.data[6];
                    data7 = message.data[7];
                    
                    PID_Array[0] = message.data[3];
                    PID_Array[1] = message.data[4];
                    PID_Array[2] = message.data[5];
                    PID_Array[3] = message.data[6];
                    
                    return;
					}
		return;
		}
	return;
	}
}


void delayUntilNextRequest() {
	if (millis() - transitionTime >= 8) {
		obdLoopFunction = sendObdRequest;
		transitionTime = millis();
	}
}

/*************** End: OBD Loop Functions ****************/


void printValuesAtInterval() {
	static const unsigned long interval = 10000;
	static unsigned long lastDisplay = 0;
	if (millis() - lastDisplay < interval) {
		return;
	}
	lastDisplay = millis();
	printValues();
}

void printValues() {

    //PIDs 1-20 in HEX
    Serial.println("**************Printing PIDs 0-20 (HEXIDECIMAL)**************");
    if (AvailablePID_1_20[7] == true) {
        Serial.println("Monitor status since DTCs cleared");
    }
    if (AvailablePID_1_20[6] == true) {
        Serial.println("Freeze DTC");
    }
    if (AvailablePID_1_20[5] == true) {
        Serial.println("Fuel system status");
    }
    if (AvailablePID_1_20[4] == true) {
        Serial.println("Calculated engine load");
    }
    if (AvailablePID_1_20[3] == true) {
        Serial.println("Engine coolant temperature");
    }
    if (AvailablePID_1_20[2] == true) {
        Serial.println("Short term fuel trim Bank 1");
    }
    if (AvailablePID_1_20[1] == true) {
        Serial.println("Long term fuel trim Bank 1");
    }
    if (AvailablePID_1_20[0] == true) {
        Serial.println("Short term fuel trim Bank 2");
    }
    if (AvailablePID_1_20[15] == true) {
        Serial.println("Long term fuel trim Bank 2");
    }
    if (AvailablePID_1_20[14] == true) {
        Serial.println("Fuel pressure");
    }
    if (AvailablePID_1_20[13] == true) {
        Serial.println("Intake manifold absolute pressure");
    }
    if (AvailablePID_1_20[12] == true) {
        Serial.println("Engine RPM");
    }
    if (AvailablePID_1_20[11] == true) {
        Serial.println("Vehicle speed");
    }
    if (AvailablePID_1_20[10] == true) {
        Serial.println("Timing advance");
    }
    if (AvailablePID_1_20[9] == true) {
        Serial.println("Intake air temperature");
    }
    if (AvailablePID_1_20[8] == true) {
        Serial.println("MAF air flow rate");
    }
    if (AvailablePID_1_20[23] == true) {
        Serial.println("Throttle position");
    }
    if (AvailablePID_1_20[22] == true) {
        Serial.println("Commanded secondary air status");
    }
    if (AvailablePID_1_20[21] == true) {
        Serial.println("Oxygen sensors present (in 2 banks)");
    }
    if (AvailablePID_1_20[20] == true) {
        Serial.println("Oxygen Sensor 1 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[19] == true) {
        Serial.println("Oxygen Sensor 2 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[18] == true) {
        Serial.println("Oxygen Sensor 3 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[17] == true) {
        Serial.println("Oxygen Sensor 4 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[16] == true) {
        Serial.println("Oxygen Sensor 5 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[31] == true) {
        Serial.println("Oxygen Sensor 6 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[30] == true) {
        Serial.println("Oxygen Sensor 7 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[29] == true) {
        Serial.println("Oxygen Sensor 8 A:Voltage B:Short term fuel trim");
    }
    if (AvailablePID_1_20[28] == true) {
        Serial.println("OBD standards this vehicle conforms to");
    }
    if (AvailablePID_1_20[27] == true) {
        Serial.println("Oxygen sensors present (in 4 banks)");
    }
    if (AvailablePID_1_20[26] == true) {
        Serial.println("Auxiliary input status");
    }
    if (AvailablePID_1_20[25] == true) {
        Serial.println("Run time since engine start");
    }
    if (AvailablePID_1_20[24] == true) {
        Serial.println("PIDs supported [21 - 40]");
    }
    
    //PIDs 21-40 in HEX
    Serial.println("**************Printing PIDs 21-40 (HEXIDECIMAL)**************");
    if (AvailablePID_21_40[7] == true) {
        Serial.println("Distance traveled with malfunction indicator lamp (MIL) on");
    }
    if (AvailablePID_21_40[6] == true) {
        Serial.println("Fuel Rail Pressure (relative to manifold vacuum)");
    }
    if (AvailablePID_21_40[5] == true) {
        Serial.println("Fuel Rail Gauge Pressure (diesel, or gasoline direct injection)");
    }
    if (AvailablePID_21_40[4] == true) {
        Serial.println("Oxygen Sensor 1 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[3] == true) {
        Serial.println("Oxygen Sensor 2 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[2] == true) {
        Serial.println("Oxygen Sensor 3 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[1] == true) {
        Serial.println("Oxygen Sensor 4 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[0] == true) {
        Serial.println("Oxygen Sensor 5 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[15] == true) {
        Serial.println("Oxygen Sensor 6 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[14] == true) {
        Serial.println("Oxygen Sensor 7 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[13] == true) {
        Serial.println("Oxygen Sensor 8 AB: Fuel Air Equivalence Ratio CD: Voltage");
    }
    if (AvailablePID_21_40[12] == true) {
        Serial.println("Commanded EGR");
    }
    if (AvailablePID_21_40[11] == true) {
        Serial.println("EGR Error");
    }
    if (AvailablePID_21_40[10] == true) {
        Serial.println("Commanded evaporative purge");
    }
    if (AvailablePID_21_40[9] == true) {
        Serial.println("Fuel Tank Level Input");
    }
    if (AvailablePID_21_40[8] == true) {
        Serial.println("Warm-ups since codes cleared");
    }
    if (AvailablePID_21_40[23] == true) {
        Serial.println("Distance traveled since codes cleared");
    }
    if (AvailablePID_21_40[22] == true) {
        Serial.println("Evap. System Vapor Pressure");
    }
    if (AvailablePID_21_40[21] == true) {
        Serial.println("Absolute Barometric Pressure");
    }
    if (AvailablePID_21_40[20] == true) {
        Serial.println("Oxygen Sensor 1 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[19] == true) {
        Serial.println("Oxygen Sensor 2 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[18] == true) {
        Serial.println("Oxygen Sensor 3 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[17] == true) {
        Serial.println("Oxygen Sensor 4 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[16] == true) {
        Serial.println("Oxygen Sensor 5 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[31] == true) {
        Serial.println("Oxygen Sensor 6 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[30] == true) {
        Serial.println("Oxygen Sensor 7 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[29] == true) {
        Serial.println("Oxygen Sensor 8 AB: Fuel Air Equivalence Ratio CD: Current");
    }
    if (AvailablePID_21_40[28] == true) {
        Serial.println("Catalyst Temperature: Bank 1, Sensor 1");
    }
    if (AvailablePID_21_40[27] == true) {
        Serial.println("Catalyst Temperature: Bank 2, Sensor 1");
    }
    if (AvailablePID_21_40[26] == true) {
        Serial.println("Catalyst Temperature: Bank 1, Sensor 2");
    }
    if (AvailablePID_21_40[25] == true) {
        Serial.println("Catalyst Temperature: Bank 2, Sensor 2");
    }
    if (AvailablePID_21_40[24] == true) {
        Serial.println("PIDs supported [41 - 60]");
    }
    
    //PIDs41-60 in HEX
    Serial.println("**************Printing PIDs 41-60 (HEXIDECIMAL)**************");
    if (AvailablePID_41_60[7] == true) {
        Serial.println("Monitor status this drive cycle");
    }
    if (AvailablePID_41_60[6] == true) {
        Serial.println("Control module voltage");
    }
    if (AvailablePID_41_60[5] == true) {
        Serial.println("Absolute load value");
    }
    if (AvailablePID_41_60[4] == true) {
        Serial.println("Fuel Air commanded equivalence ratio");
    }
    if (AvailablePID_41_60[3] == true) {
        Serial.println("Relative throttle position");
    }
    if (AvailablePID_41_60[2] == true) {
        Serial.println("Ambient air temperature");
    }
    if (AvailablePID_41_60[1] == true) {
        Serial.println("Absolute throttle position B");
    }
    if (AvailablePID_41_60[0] == true) {
        Serial.println("Absolute throttle position C");
    }
    if (AvailablePID_41_60[15] == true) {
        Serial.println("Accelerator pedal position D");
    }
    if (AvailablePID_41_60[14] == true) {
        Serial.println("Accelerator pedal position E");
    }
    if (AvailablePID_41_60[13] == true) {
        Serial.println("Accelerator pedal position F");
    }
    if (AvailablePID_41_60[12] == true) {
        Serial.println("Commanded throttle actuator");
    }
    if (AvailablePID_41_60[11] == true) {
        Serial.println("Time run with MIL on");
    }
    if (AvailablePID_41_60[10] == true) {
        Serial.println("Time since trouble codes cleared");
    }
    if (AvailablePID_41_60[9] == true) {
        Serial.println("Maximum value for Fuel–Air equivalence ratio, oxygen sensor voltage, oxygen sensor current, and intake manifold absolute pressure");
    }
    if (AvailablePID_41_60[8] == true) {
        Serial.println("Maximum value for air flow rate from mass air flow sensor");
    }
    if (AvailablePID_41_60[23] == true) {
        Serial.println("Fuel Type");
    }
    if (AvailablePID_41_60[22] == true) {
        Serial.println("Ethanol fuel %");
    }
    if (AvailablePID_41_60[21] == true) {
        Serial.println("Absolute Evap system Vapor Pressure");
    }
    if (AvailablePID_41_60[20] == true) {
        Serial.println("Evap system vapor pressure");
    }
    if (AvailablePID_41_60[19] == true) {
        Serial.println("Short term secondary oxygen sensor trim, A: bank 1, B: bank 3");
    }
    if (AvailablePID_41_60[18] == true) {
        Serial.println("Long term secondary oxygen sensor trim, A: bank 1, B: bank 3");
    }
    if (AvailablePID_41_60[17] == true) {
        Serial.println("Short term secondary oxygen sensor trim, A: bank 2, B: bank 4");
    }
    if (AvailablePID_41_60[16] == true) {
        Serial.println("Long term secondary oxygen sensor trim, A: bank 2, B: bank 4");
    }
    if (AvailablePID_41_60[31] == true) {
        Serial.println("Fuel rail absolute pressure");
    }
    if (AvailablePID_41_60[30] == true) {
        Serial.println("Relative accelerator pedal position");
    }
    if (AvailablePID_41_60[29] == true) {
        Serial.println("Hybrid battery pack remaining life");
    }
    if (AvailablePID_41_60[28] == true) {
        Serial.println("Engine oil temperature");
    }
    if (AvailablePID_41_60[27] == true) {
        Serial.println("Fuel injection timing");
    }
    if (AvailablePID_41_60[26] == true) {
        Serial.println("Engine fuel rate");
    }
    if (AvailablePID_41_60[25] == true) {
        Serial.println("Emission requirements to which vehicle is designed");
    }
    if (AvailablePID_41_60[24] == true) {
        Serial.println("PIDs supported [61 - 80]");
    }
    
    Serial.println("**************Printing PIDs 61-80 (HEXIDECIMAL)**************");
    if (AvailablePID_61_80[7] == true) {
        Serial.println("Driver's demand engine - percent torque");
    }
    if (AvailablePID_61_80[6] == true) {
        Serial.println("Actual engine - percent torque");
    }
    if (AvailablePID_61_80[5] == true) {
        Serial.println("Engine reference torque");
    }
    if (AvailablePID_61_80[4] == true) {
        Serial.println("Engine percent torque data");
    }
    if (AvailablePID_61_80[3] == true) {
        Serial.println("Auxiliary input / output supported");
    }
    if (AvailablePID_61_80[2] == true) {
        Serial.println("Mass air flow sensor");
    }
    if (AvailablePID_61_80[1] == true) {
        Serial.println("Engine coolant temperature");
    }
    if (AvailablePID_61_80[0] == true) {
        Serial.println("Intake air temperature sensor");
    }
    if (AvailablePID_61_80[15] == true) {
        Serial.println("Commanded EGR and EGR Error");
    }
    if (AvailablePID_61_80[14] == true) {
        Serial.println("Commanded Diesel intake air flow control and relative intake air flow position");
    }
    if (AvailablePID_61_80[13] == true) {
        Serial.println("Exhaust gas recirculation temperature");
    }
    if (AvailablePID_61_80[12] == true) {
        Serial.println("Commanded throttle actuator control and relative throttle position");
    }
    if (AvailablePID_61_80[11] == true) {
        Serial.println("Fuel pressure control system");
    }
    if (AvailablePID_61_80[10] == true) {
        Serial.println("Injection pressure control system");
    }
    if (AvailablePID_61_80[9] == true) {
        Serial.println("Turbocharger compressor inlet pressure");
    }
    if (AvailablePID_61_80[8] == true) {
        Serial.println("Boost pressure control");
    }
    if (AvailablePID_61_80[23] == true) {
        Serial.println("Variable Geometry turbo (VGT) control");
    }
    if (AvailablePID_61_80[22] == true) {
        Serial.println("Wastegate control");
    }
    if (AvailablePID_61_80[21] == true) {
        Serial.println("Exhaust pressure");
    }
    if (AvailablePID_61_80[20] == true) {
        Serial.println("Turbocharger RPM");
    }
    if (AvailablePID_61_80[19] == true) {
        Serial.println("Turbocharger temperature");
    }
    if (AvailablePID_61_80[18] == true) {
        Serial.println("Turbocharger temperature");
    }
    if (AvailablePID_61_80[17] == true) {
        Serial.println("Charge air cooler temperature (CACT)");
    }
    if (AvailablePID_61_80[16] == true) {
        Serial.println("Exhaust Gas temperature (EGT) Bank 1");
    }
    if (AvailablePID_61_80[31] == true) {
        Serial.println("Exhaust Gas temperature (EGT) Bank 2");
    }
    if (AvailablePID_61_80[30] == true) {
        Serial.println("Diesel particulate filter (DPF)");
    }
    if (AvailablePID_61_80[29] == true) {
        Serial.println("Diesel particulate filter (DPF)");
    }
    if (AvailablePID_61_80[28] == true) {
        Serial.println("Diesel Particulate filter (DPF) temperature");
    }
    if (AvailablePID_61_80[27] == true) {
        Serial.println("NOx NTE control area status");
    }
    if (AvailablePID_61_80[26] == true) {
        Serial.println("PM NTE control area status");
    }
    if (AvailablePID_61_80[25] == true) {
        Serial.println("Engine run time");
    }
    if (AvailablePID_61_80[24] == true) {
        Serial.println("PIDs supported [81 - A0]");
    }
    
}

///////////////////////////////////////
//MATH FOR DETERMINING AVAILABLE PIDS//
///////////////////////////////////////

void math() {
    if (data2 == 0) {
      int n = 0;
      int arrayPosition = 0;
      int arrayPlaceHolder = 0;

      int a = 0;
      for (int i = 0; i <= 31; i++) {
        int x;

        AvailablePID_1_20[i] = (PID_Array[arrayPosition] >> n) & 1;
        n = n + 1;
        arrayPlaceHolder = i;
        x = arrayPlaceHolder;
        if (x == 7 || x == 15 || x == 23) {
          arrayPosition = arrayPosition + 1;
          n = 0;
        }
      }
    }

    if (data2 == 32) {
      int n = 0;
      int arrayPosition = 0;
      int arrayPlaceHolder = 0;
      
      for (int i = 0; i <= 31; i++) {
        int x;
  
        AvailablePID_21_40[i] = (PID_Array[arrayPosition] >> n) & 1;
        n = n+1;

        arrayPlaceHolder = i;
        x = arrayPlaceHolder;
        if (x == 7 || x == 15 || x == 23) {
          arrayPosition = arrayPosition + 1;
          n = 0;
        }
      }
    }
    
    
    if (data2 == 64) {
      int n = 0;
      int arrayPosition = 0;
      int arrayPlaceHolder = 0;
      
      for (int i = 0; i <= 31; i++) {
        int x;
  
        AvailablePID_41_60[i] = (PID_Array[arrayPosition] >> n) & 1;
        n = n+1;

        arrayPlaceHolder = i;
        x = arrayPlaceHolder;
        if (x == 7 || x == 15 || x == 23) {
          arrayPosition = arrayPosition + 1;
          n = 0;
        }
      }
    }
    
    
     if (data2 == 96) {
      int n = 0;
      int arrayPosition = 0;
      int arrayPlaceHolder = 0;
      
      for (int i = 0; i <= 31; i++) {
        int x;
  
        AvailablePID_61_80[i] = (PID_Array[arrayPosition] >> n) & 1;
        n = n+1;

        arrayPlaceHolder = i;
        x = arrayPlaceHolder;
        if (x == 7 || x == 15 || x == 23) {
          arrayPosition = arrayPosition + 1;
          n = 0;
        }
      }
    }

}

bool byteArray8Equal(uint8_t a1[8], uint8_t a2[8]) {
	for (int i = 0; i < 8; i++) {
		if (a1[i] != a2[i]) return false;
	}
	return true;
}

Credits

Emerson Garland

1 project • 13 followers

Engineer

Visualize Car Data With Carloop And Blynk

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

High Level View

Setting Up the Electron

Connecting the Hardware

Programming the Electron - Part 1

Read PIDs - Mac/Linux

Read PIDs - Windows

Setup Blynk Account

Modify Example Code

Programming the Electron - Part 2

Back to Blynk!

You're Almost Finished!

Summary and Planned Updates

Schematics

High Level Diagram

Code

Mode 1 PIDs to Blynk

Available Mode 1 PIDs

Carloop Repository

Credits

Emerson Garland

Comments

Embed the widget on your own site

Visualize Car Data With Carloop And Blynk

Visualize Car Data With Carloop And Blynk

Things used in this project

Hardware components

Software apps and online services

Story

Introduction

High Level View

Setting Up the Electron

Connecting the Hardware

Programming the Electron - Part 1

Read PIDs - Mac/Linux

Read PIDs - Windows

Setup Blynk Account

Modify Example Code

Programming the Electron - Part 2

Back to Blynk!

You're Almost Finished!

Summary and Planned Updates

Schematics

High Level Diagram

Code

Mode 1 PIDs to Blynk

Available Mode 1 PIDs

Carloop Repository

Credits

Emerson Garland

Comments

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