這篇文章給大家介紹怎么在Android中使用OkUSB封裝一個(gè)串口通信,內(nèi)容非常詳細(xì),感興趣的小伙伴們可以參考借鑒,希望對(duì)大家能有所幫助。
OkUSB
一個(gè)簡(jiǎn)潔的Android串口通信框架。
功能簡(jiǎn)介
支持設(shè)置波特率
支持設(shè)置數(shù)據(jù)位
支持設(shè)置停止位
支持設(shè)置校驗(yàn)位
支持DTS和RTS
支持串口連接狀態(tài)監(jiān)聽
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:
在需要連接串口的Activity中添加:
2.在res文件夾創(chuàng)建xml文件夾,新建device_filter.xml
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)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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