自动判断蓝牙设备是不是OBD？

Question

目前我正在开发 OBDII。在蓝牙发现连接obd时，我如何确定哪个设备是obd，哪个设备是普通蓝牙设备。因为我想自动将我的应用程序与obd连接。

obd设备有什么共同特征可以帮助我确定这是OBD设备吗？

我正在尝试按照 name 配对 obd 设备的代码。

//Register receiver for bluetooth discovery
private final BroadcastReceiver mReceiver = new BroadcastReceiver() {

    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();

        if (BluetoothAdapter.ACTION_DISCOVERY_STARTED.equals(action)) {
            //discovery starts, we can show progress dialog or perform other tasks
        } else if (BluetoothAdapter.ACTION_DISCOVERY_FINISHED.equals(action)) {
            //discovery finishes, dismiss progress dialog
        } else if (BluetoothDevice.ACTION_FOUND.equals(action)) {
            //bluetooth device found for pair
            try {
// Here I want to know device is obd or not?
                BluetoothDevice device = intent.getParcelableExtra(BluetoothDevice.EXTRA_DEVICE);
                //Make pair of obd device as per name:
                if (device != null && !device.getName().equals("")) {
                    LogUtils.LOGE("NEW DEVICE", device.getName());
                    if (device.getName().equals(OBD_DEVICE_NAME_ONE) ||
                            device.getName().equals(OBD_DEVICE_NAME_TWO) ||
                            device.getName().equals(OBD_DEVICE_NAME_THREE)) {
                        pairDevice(device);
                    }
                }
            } catch (Exception e) {
                e.printStackTrace();
            }
        }
    }
};

//Send pairing request to OBD Device
private void pairDevice(BluetoothDevice device) {
    try {
        Method method = device.getClass().getMethod("createBond", (Class[]) null);
        method.invoke(device, (Object[]) null);
    } catch (Exception e) {
        e.printStackTrace();
    }
}

将OBD设备与名称配对后，它将自动连接并正常工作。

Answer 1

找出答案的唯一好方法是连接并发送：

ATI

这将返回一个ID，它始终包含 ELM327。