Designing a distress signal generator for vehicles

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1

Hey guys i recently bought an emulator from the freematics its called obd2 emulator mk2.

I connected it to my Arduino UNO with wires and it doesn’t seem to be working x_x

please help someone.

Here’s my code ,

#include <Arduino.h>
#include <Wire.h>
#include <OBD.h>

COBDI2C obd;

void setup()
{  Serial.begin(38400);
   Serial.println("ATZ"); //shoud initialize the emulator
   Serial.println("ATE1"); // turn on character echoeing 
   //  use the debug LED as output
  pinMode(13, OUTPUT);  
  // start communication with OBD-II UART adapter
  obd.begin();
  // initiate OBD-II connection until success
  while (!obd.init());  
}

void loop()
{
  int value;
  if (obd.read(PID_RPM, value)) {
    // RPM is successfully read and its value stored in variable 'value'
    // light on LED when RPM exceeds 3000
    digitalWrite(13, value > 3000 ? HIGH : LOW);
     delay (2000);
  }
}

The emulator comes with a GUI , when i increase rpm in it to above 3000 the led should light up but the led doesnt light up. can someone tell me what i am dong wrong?

heres the serial interface commands for the emulator:

Serial Control Interface
========================

The serial control interface is implemented as AT command-set containing following commands. The baud rate is 38400bps. All commands and responses are terminated with '\r' (ASCII: 0xd).

ATZ

    Function: initializing the emulator
    Response: the name and version of the emulator

ATE0/ATE1

    Function: turning off/on character echoing
    Response: OK

ATSET BUS [Protocol]

    Function: changing the simulated protocol (default is CAN bus 11-bit/500Kbps)
    Argument: a string that specifies the protocol which can be one of the following:
        CAN_11B_500K
        CAN_29B_500K
        CAN_11B_250K
        CAN_29B_250K
        KWP2000_FAST
        KWP2000_5BPS
        ISO9141_2
    Response: OK or Error

ATSET DTC=[OBD-II Trouble Code]

    Function: setting a DTC (up to 6 allowed)
    Argument: a code that identifies a malfunction or failure of a vehicle component (refer to this website)
    Response: OK or Error

ATSET VIN=[Vehicle Identification Number]

    Function: setting the emulated VIN
    Argument: a 17-digit vehicle identification number
    Response: OK or Error

ATSET [PID]=[Value]

    Function: setting the value of an OBD-II PID
    Arguments:
        PID: a 4-digit HEX number specifying an OBD-II PID
        Value£º the value of the OBD-II-PID
    Response: OK or Error

ATGET [PID]

    Function: retrieving the current value of an OBD-II PID
    Argument: a 4-digit HEX number specifying an OBD-II PID
    Response: The raw HEX data of the requested OBD-II PID
2

How did you connect it to the Uno? If you used the serial port on the Freematics unit, I think that’s the wrong side. It looks like that serial port is the same as the USB port, used to configure the emulator.

Please describe your exact configuration: What is the Arduino connected to (device, pins, etc). Are you using an ODB to I2C interface between the Arduino and the emulator?

/mike