通过蓝牙从IEC62056协议获取电表数据 [英] Get data from electricity meter with IEC62056 protocol via bluetooth

问题描述

我正在开发一个Android应用程序。我需要通过蓝牙光学探针从仪表获取数据。据我所知，我应该连接到蓝牙探测并发送一些请求以获取仪表值。如果有人知道怎么做，请帮助我。我使用了BluetoothSocket，Outputstream和inputstream但没有运气！



我尝试过：

I am developing an android application.I need to get data from meter by optical probe via bluetooth. As I know I should connect to probe with bluetooth and send some request to that for getting the meter values. Please if anybody knows about how to do it .. help me. I used BluetoothSocket,Outputstream and inputstream but no luck!

What I have tried:

bluetoothSocket = device.createRfcommSocketToServiceRecord(myUUID);

inputStearm = bluetoothSocket .getInputStream();
             outputStream = bluetoothSocket .getOutputStream();

推荐答案

首先，您是否使用正确的权限更新了清单？

需要包含以下权限：

First of all, did you update the manifest with the right permissions?
The following permissions needed to be included:

<manifest ... >
  <uses-permission android:name="android.permission.BLUETOOTH" />
  <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
  <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION" />
  ...
</manifest>

在继续下一阶段之前，请确保设备已配对。

您只需检查配对状态：

Before continuing to the next phase, make sure the device is already paired up.
You can simply check the paired state with:

if(device.getBondState()==device.BOND_BONDED)

获取正确的UUID（示例）：

Get the correct UUID(example):

private static final UUID MY_UUID = UUID.fromString("0000110E-0000-1000-8000-00805F9B34FB");

此时您必须能够获得套接字。

You must be able to get a socket at this point.

mSocket = device.createInsecureRfcommSocketToServiceRecord(MY_UUID);

阅读套接字：

Read the socket:

mSocket.connect();
InputStream input = mSocket.getInputStream();
DataInputStream dinput = new DataInputStream(input);

稍后您可以阅读：

You can read it later on with:

dinput.readFully(byteArray, 0, byteArray.length);

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