Android与计算机的USB串行通信
我需要创建一个应用程序,从计算机接收文本数据并将其传输到Android应用程序。我找到了这个:。 我用这个例子来看看,如果我像这样开始,我可以看到一个通信,然后,当我在我的手机上使用时,似乎1设备发现供应商1519产品0020没有驱动程序。就像没有发生通讯,也没有找到电脑一样 代码如下: SerialConsoleActivity.java--Android与计算机的USB串行通信,android,eclipse,usbserial,Android,Eclipse,Usbserial,我需要创建一个应用程序,从计算机接收文本数据并将其传输到Android应用程序。我找到了这个:。 我用这个例子来看看,如果我像这样开始,我可以看到一个通信,然后,当我在我的手机上使用时,似乎1设备发现供应商1519产品0020没有驱动程序。就像没有发生通讯,也没有找到电脑一样 代码如下: SerialConsoleActivity.java-- package com.hoho.android.usbserial.examples; 导入android.app.Activity; 导入andro
package com.hoho.android.usbserial.examples;
导入android.app.Activity;
导入android.content.Context;
导入android.content.Intent;
导入android.os.Bundle;
导入android.util.Log;
导入android.widget.ScrollView;
导入android.widget.TextView;
导入com.hoho.android.usbserial.driver.UsbSerialDriver;
导入com.hoho.android.usbserial.util.hextump;
导入com.hoho.android.usbserial.util.SerialInputInputManager;
导入java.io.IOException;
导入java.util.concurrent.ExecutorService;
导入java.util.concurrent.Executors;
/**
*监视单个{@link UsbSerialDriver}实例,显示所有数据
*收到。
*
*@作者迈克·韦克莉(opensource@hoho.com)
*/
公共类SerialConsoleActivity扩展了活动{
private final String TAG=SerialConsoleActivity.class.getSimpleName();
/**
*驱动程序实例,通过
*{@link#show(上下文,UsbSerialDriver)}。
*
*
*这是一个狡猾的黑客;使用
*参数以{@link#startActivity(Intent)}意图传入
*因为这两个活动将在同一时间运行,所以可以不受影响
*这是一个简单的演示。
*/
专用静态UsbSerialDriver sDriver=null;
私有文本视图mTitleTextView;
私有文本视图mDumpTextView;
私有滚动视图mScrollView;
private final executor service mExecutor=Executors.newSingleThreadExecutor();
专用串行输入输出管理器mSerialIoManager;
私有最终SerialInputOutputManager.Listener mListener=
新建SerialInputOutManager.Listener(){
@凌驾
公共void onRunError(异常e){
Log.d(标签“Runner stopped”);
}
@凌驾
公共无效onNewData(最终字节[]数据){
SerialConsoleActivity.this.runOnUiThread(new Runnable()){
@凌驾
公开募捐{
SerialConsoleActivity.this.updateReceivedData(数据);
}
});
}
};
@凌驾
创建时的公共void(Bundle savedInstanceState){
super.onCreate(savedInstanceState);
setContentView(R.layout.serial_控制台);
mTitleTextView=(TextView)findViewById(R.id.demoTitle);
mDumpTextView=(TextView)findViewById(R.id.consoleText);
mScrollView=(ScrollView)findViewById(R.id.demoScroller);
}
@凌驾
受保护的void onPause(){
super.onPause();
停止管理器();
if(sDriver!=null){
试一试{
sDriver.close();
}捕获(IOE异常){
//忽略。
}
sDriver=null;
}
完成();
}
@凌驾
受保护的void onResume(){
super.onResume();
Log.d(标签,“恢复,sDriver=“+sDriver”);
if(sDriver==null){
mTitleTextView.setText(“无串行设备”);
}否则{
试一试{
sDriver.open();
sDriver.setParameters(115200,8,UsbSerialDriver.STOPBITS_1,UsbSerialDriver.PARITY_NONE);
}捕获(IOE异常){
Log.e(标签,“设置设备时出错:”+e.getMessage(),e);
mTitleTextView.setText(“打开设备时出错:+e.getMessage());
试一试{
sDriver.close();
}捕获(IOE2异常){
//忽略。
}
sDriver=null;
返回;
}
mTitleTextView.setText(“串行设备:+sDriver.getClass().getSimpleName());
}
onDeviceStateChange();
}
私有void stopIoManager(){
if(mSerialIoManager!=null){
Log.i(标记“停止io管理器…”);
mSerialIoManager.stop();
mSerialIoManager=null;
}
}
私人经理(){
if(sDriver!=null){
Log.i(标记“启动io管理器…”);
mSerialIoManager=新的串行输入输出管理器(sDriver,mListener);
mExecutor.submit(mSerialIoManager);
}
}
私有无效OnDevicestatechRange(){
停止管理器();
startIoManager();
}
私有void updateReceivedData(字节[]数据){
最终字符串message=“Read”+data.length+“字节:\n”
+hextump.dumphextstring(数据)+“\n\n”;
mDumpTextView.append(消息);
mScrollView.smoothScrollTo(0,mDumpTextView.getBottom());
}
/**
*使用提供的驱动程序实例启动活动。
*
*@param上下文
*@param驱动程序
*/
静态void显示(上下文,UsbSerialDriver驱动程序){
sDriver=驱动器;
最终意图=新意图(上下文,SerialConsoleActivity.class);
intent.addFlags(intent.FLAG_ACTIVITY_SINGLE_TOP | intent.FLAG_ACTIVITY_NO_HISTORY);
背景。开始触觉(意图);
}
}
抗恶魔性--
导入android.app.Activity;
导入android.content.Context;
导入android.hardware.usb.UsbDevice;
导入android.hardware.usb.UsbManager;
导入android.os.AsyncTask;
导入android.os.Bundle;
导入android.os.Handler;
导入android.os.Message;
导入android.os.SystemClock;
导入android.util.Log;
导入android.view.LayoutInflater;
导入android.view.view;
导入android.view.ViewGroup;
导入android.widget.AdapterView;
导入android.widget.ArrayAdapter;
package com.hoho.android.usbserial.examples;
import android.app.Activity;
import android.content.Context;
import android.content.Intent;
import android.os.Bundle;
import android.util.Log;
import android.widget.ScrollView;
import android.widget.TextView;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import com.hoho.android.usbserial.util.HexDump;
import com.hoho.android.usbserial.util.SerialInputOutputManager;
import java.io.IOException;
import java.util.concurrent.ExecutorService;
import java.util.concurrent.Executors;
/**
* Monitors a single {@link UsbSerialDriver} instance, showing all data
* received.
*
* @author mike wakerly (opensource@hoho.com)
*/
public class SerialConsoleActivity extends Activity {
private final String TAG = SerialConsoleActivity.class.getSimpleName();
/**
* Driver instance, passed in statically via
* {@link #show(Context, UsbSerialDriver)}.
*
* <p/>
* This is a devious hack; it'd be cleaner to re-create the driver using
* arguments passed in with the {@link #startActivity(Intent)} intent. We
* can get away with it because both activities will run in the same
* process, and this is a simple demo.
*/
private static UsbSerialDriver sDriver = null;
private TextView mTitleTextView;
private TextView mDumpTextView;
private ScrollView mScrollView;
private final ExecutorService mExecutor = Executors.newSingleThreadExecutor();
private SerialInputOutputManager mSerialIoManager;
private final SerialInputOutputManager.Listener mListener =
new SerialInputOutputManager.Listener() {
@Override
public void onRunError(Exception e) {
Log.d(TAG, "Runner stopped.");
}
@Override
public void onNewData(final byte[] data) {
SerialConsoleActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
SerialConsoleActivity.this.updateReceivedData(data);
}
});
}
};
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.serial_console);
mTitleTextView = (TextView) findViewById(R.id.demoTitle);
mDumpTextView = (TextView) findViewById(R.id.consoleText);
mScrollView = (ScrollView) findViewById(R.id.demoScroller);
}
@Override
protected void onPause() {
super.onPause();
stopIoManager();
if (sDriver != null) {
try {
sDriver.close();
} catch (IOException e) {
// Ignore.
}
sDriver = null;
}
finish();
}
@Override
protected void onResume() {
super.onResume();
Log.d(TAG, "Resumed, sDriver=" + sDriver);
if (sDriver == null) {
mTitleTextView.setText("No serial device.");
} else {
try {
sDriver.open();
sDriver.setParameters(115200, 8, UsbSerialDriver.STOPBITS_1, UsbSerialDriver.PARITY_NONE);
} catch (IOException e) {
Log.e(TAG, "Error setting up device: " + e.getMessage(), e);
mTitleTextView.setText("Error opening device: " + e.getMessage());
try {
sDriver.close();
} catch (IOException e2) {
// Ignore.
}
sDriver = null;
return;
}
mTitleTextView.setText("Serial device: " + sDriver.getClass().getSimpleName());
}
onDeviceStateChange();
}
private void stopIoManager() {
if (mSerialIoManager != null) {
Log.i(TAG, "Stopping io manager ..");
mSerialIoManager.stop();
mSerialIoManager = null;
}
}
private void startIoManager() {
if (sDriver != null) {
Log.i(TAG, "Starting io manager ..");
mSerialIoManager = new SerialInputOutputManager(sDriver, mListener);
mExecutor.submit(mSerialIoManager);
}
}
private void onDeviceStateChange() {
stopIoManager();
startIoManager();
}
private void updateReceivedData(byte[] data) {
final String message = "Read " + data.length + " bytes: \n"
+ HexDump.dumpHexString(data) + "\n\n";
mDumpTextView.append(message);
mScrollView.smoothScrollTo(0, mDumpTextView.getBottom());
}
/**
* Starts the activity, using the supplied driver instance.
*
* @param context
* @param driver
*/
static void show(Context context, UsbSerialDriver driver) {
sDriver = driver;
final Intent intent = new Intent(context, SerialConsoleActivity.class);
intent.addFlags(Intent.FLAG_ACTIVITY_SINGLE_TOP | Intent.FLAG_ACTIVITY_NO_HISTORY);
context.startActivity(intent);
}
}
import android.app.Activity;
import android.content.Context;
import android.hardware.usb.UsbDevice;
import android.hardware.usb.UsbManager;
import android.os.AsyncTask;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.os.SystemClock;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.AdapterView;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.ProgressBar;
import android.widget.TextView;
import android.widget.TwoLineListItem;
import com.hoho.android.usbserial.driver.UsbSerialDriver;
import com.hoho.android.usbserial.driver.UsbSerialProber;
import com.hoho.android.usbserial.util.HexDump;
import java.util.ArrayList;
import java.util.List;
/**
* Shows a {@link ListView} of available USB devices.
*
* @author mike wakerly (opensource@hoho.com)
*/
public class DeviceListActivity extends Activity {
private final String TAG = DeviceListActivity.class.getSimpleName();
private UsbManager mUsbManager;
private ListView mListView;
private TextView mProgressBarTitle;
private ProgressBar mProgressBar;
private static final int MESSAGE_REFRESH = 101;
private static final long REFRESH_TIMEOUT_MILLIS = 5000;
private final Handler mHandler = new Handler() {
@Override
public void handleMessage(Message msg) {
switch (msg.what) {
case MESSAGE_REFRESH:
refreshDeviceList();
mHandler.sendEmptyMessageDelayed(MESSAGE_REFRESH, REFRESH_TIMEOUT_MILLIS);
break;
default:
super.handleMessage(msg);
break;
}
}
};
/** Simple container for a UsbDevice and its driver. */
private static class DeviceEntry {
public UsbDevice device;
public UsbSerialDriver driver;
DeviceEntry(UsbDevice device, UsbSerialDriver driver) {
this.device = device;
this.driver = driver;
}
}
private List<DeviceEntry> mEntries = new ArrayList<DeviceEntry>();
private ArrayAdapter<DeviceEntry> mAdapter;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mUsbManager = (UsbManager) getSystemService(Context.USB_SERVICE);
mListView = (ListView) findViewById(R.id.deviceList);
mProgressBar = (ProgressBar) findViewById(R.id.progressBar);
mProgressBarTitle = (TextView) findViewById(R.id.progressBarTitle);
mAdapter = new ArrayAdapter<DeviceEntry>(this, android.R.layout.simple_expandable_list_item_2, mEntries) {
@Override
public View getView(int position, View convertView, ViewGroup parent) {
final TwoLineListItem row;
if (convertView == null){
final LayoutInflater inflater =
(LayoutInflater) getSystemService(Context.LAYOUT_INFLATER_SERVICE);
row = (TwoLineListItem) inflater.inflate(android.R.layout.simple_list_item_2, null);
} else {
row = (TwoLineListItem) convertView;
}
final DeviceEntry entry = mEntries.get(position);
final String title = String.format("Vendor %s Product %s",
HexDump.toHexString((short) entry.device.getVendorId()),
HexDump.toHexString((short) entry.device.getProductId()));
row.getText1().setText(title);
final String subtitle = entry.driver != null ?
entry.driver.getClass().getSimpleName() : "No Driver";
row.getText2().setText(subtitle);
return row;
}
};
mListView.setAdapter(mAdapter);
mListView.setOnItemClickListener(new ListView.OnItemClickListener() {
@Override
public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
Log.d(TAG, "Pressed item " + position);
if (position >= mEntries.size()) {
Log.w(TAG, "Illegal position.");
return;
}
final DeviceEntry entry = mEntries.get(position);
final UsbSerialDriver driver = entry.driver;
if (driver == null) {
Log.d(TAG, "No driver.");
return;
}
showConsoleActivity(driver);
}
});
}
@Override
protected void onResume() {
super.onResume();
mHandler.sendEmptyMessage(MESSAGE_REFRESH);
}
@Override
protected void onPause() {
super.onPause();
mHandler.removeMessages(MESSAGE_REFRESH);
}
private void refreshDeviceList() {
showProgressBar();
new AsyncTask<Void, Void, List<DeviceEntry>>() {
@Override
protected List<DeviceEntry> doInBackground(Void... params) {
Log.d(TAG, "Refreshing device list ...");
SystemClock.sleep(1000);
final List<DeviceEntry> result = new ArrayList<DeviceEntry>();
for (final UsbDevice device : mUsbManager.getDeviceList().values()) {
final List<UsbSerialDriver> drivers =
UsbSerialProber.probeSingleDevice(mUsbManager, device);
Log.d(TAG, "Found usb device: " + device);
if (drivers.isEmpty()) {
Log.d(TAG, " - No UsbSerialDriver available.");
result.add(new DeviceEntry(device, null));
} else {
for (UsbSerialDriver driver : drivers) {
Log.d(TAG, " + " + driver);
result.add(new DeviceEntry(device, driver));
}
}
}
return result;
}
@Override
protected void onPostExecute(List<DeviceEntry> result) {
mEntries.clear();
mEntries.addAll(result);
mAdapter.notifyDataSetChanged();
mProgressBarTitle.setText(
String.format("%s device(s) found",Integer.valueOf(mEntries.size())));
hideProgressBar();
Log.d(TAG, "Done refreshing, " + mEntries.size() + " entries found.");
}
}.execute((Void) null);
}
private void showProgressBar() {
mProgressBar.setVisibility(View.VISIBLE);
mProgressBarTitle.setText(R.string.refreshing);
}
private void hideProgressBar() {
mProgressBar.setVisibility(View.INVISIBLE);
}
private void showConsoleActivity(UsbSerialDriver driver) {
SerialConsoleActivity.show(this, driver);
}
}