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Android串口通信封裝之OkUSB的示例代碼

 更新時(shí)間:2017年10月26日 09:22:07   作者:zhouzhuo810  
本篇文章主要介紹了Android串口通信封裝之OkUSB的示例代碼,小編覺(jué)得挺不錯(cuò)的,現(xiàn)在分享給大家,也給大家做個(gè)參考。一起跟隨小編過(guò)來(lái)看看吧

本文介紹了Android串口通信封裝之OkUSB的示例代碼,分享給大家。具體如下:

Github傳送門:OkUSB

OkUSB

一個(gè)簡(jiǎn)潔的Android串口通信框架。

功能簡(jiǎn)介

  1. 支持設(shè)置波特率
  2. 支持設(shè)置數(shù)據(jù)位
  3. 支持設(shè)置停止位
  4. 支持設(shè)置校驗(yàn)位
  5. 支持DTS和RTS
  6. 支持串口連接狀態(tài)監(jiān)聽(tīng)

用法簡(jiǎn)介

Gradle

  allprojects {
    repositories {
      ...
      maven { url 'https://jitpack.io' }
    }
  }

  dependencies {
      compile 'com.github.zhouzhuo810:OkUSB:1.0.0'
  }

具體用法

1.在AndroidManifest.xml中添加如下特性:

<uses-feature android:name="android.hardware.usb.host" />

在需要連接串口的Activity中添加:

  <intent-filter>
    <action android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED" />
  </intent-filter>
  <meta-data
    android:name="android.hardware.usb.action.USB_DEVICE_ATTACHED"
    android:resource="@xml/device_filter" />

2.在res文件夾創(chuàng)建xml文件夾,新建device_filter.xml

<?xml version="1.0" encoding="utf-8"?>
<resources>
  <!-- 要進(jìn)行通信的USB設(shè)備的供應(yīng)商ID(VID)和產(chǎn)品識(shí)別碼(PID)-->
  <usb-device vendor-id="0403" product-id="6001" />
</resources>

3.前面都是準(zhǔn)備工作,這里才真正使用。

  //初始化
  usb = new USB.USBBuilder(this)
      .setBaudRate(115200) //波特率
      .setDataBits(8)    //數(shù)據(jù)位
      .setStopBits(UsbSerialPort.STOPBITS_1) //停止位
      .setParity(UsbSerialPort.PARITY_NONE) //校驗(yàn)位
      .setMaxReadBytes(20)  //接受數(shù)據(jù)最大長(zhǎng)度
      .setReadDuration(500) //讀數(shù)據(jù)間隔時(shí)間
      .setDTR(false)  //DTR enable
      .setRTS(false)  //RTS enable
      .build();

  //實(shí)現(xiàn)監(jiān)聽(tīng)連接狀態(tài)和數(shù)據(jù)收發(fā)。
  usb.setOnUsbChangeListener(new USB.OnUsbChangeListener() {
    @Override
    public void onUsbConnect() {
      Toast.makeText(MainActivity.this, "conencted", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onUsbDisconnect() {
      Toast.makeText(MainActivity.this, "disconencted", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onDataReceive(byte[] data) {
      tvResult.setText(new String(data, Charset.forName("GB2312")));
    }

    @Override
    public void onUsbConnectFailed() {
      Toast.makeText(MainActivity.this, "connect fail", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onPermissionGranted() {
      Toast.makeText(MainActivity.this, "permission ok", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onPermissionRefused() {
      Toast.makeText(MainActivity.this, "permission fail", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onDriverNotSupport() {
      Toast.makeText(MainActivity.this, "no driver", Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onWriteDataFailed(String error) {
      Toast.makeText(MainActivity.this, "write fail" + error, Toast.LENGTH_SHORT).show();
    }

    @Override
    public void onWriteSuccess(int num) {
      Toast.makeText(MainActivity.this, "write ok " + num, Toast.LENGTH_SHORT).show();
    }
  });

4.如果是Activity,可以在onDestroy中調(diào)用如下代碼關(guān)閉串口。

    if (usb != null) {
      usb.destroy();
    }

License

Copyright 2017 zhouzhuo810

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

  http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.

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