Reading the values from OBD II Bluetooth adapter in the android application

Question

Can anyone give me an idea on how to read the values from the OBD II Bluetooth adapter in an android application.

I want to start with scanning for the bluetooth devices from my android application, then after bluetooth device is found, how would I interact with it and get the values from it?

Answer 1

You should start by reading this http://developer.android.com/guide/topics/wireless/bluetooth.html it contains step by step procedure .

add required permissions, make a bt adapter, then find paired/unpaired devices

Answer 2

I used the BluetoothChat Application and was able to get some basic communications, I am not moving into data logging. You can use this application to have a sort of instant messenger conversation with your ECM.

1. What particular dongle are you using?
2. Do you know what protocols are in use within your vehicle?

Download the BluetoothChat sample application -

1. They will have already handled the intricacies of the connection for you, you will have to change the UUID in order to connect with your device - 00001101-0000-1000-8000-00805F9B34FB
2. Read up on your particular dongle, some require the return character to be sentat the end of every command "\r"

This should get you started!