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      1 /*
      2  * Copyright (C) 2011 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 
     18 package android.hardware;
     19 
     20 import android.app.PendingIntent;
     21 import android.content.Context;
     22 import android.os.Bundle;
     23 import android.os.ParcelFileDescriptor;
     24 import android.os.RemoteException;
     25 import android.os.SystemProperties;
     26 import android.util.Log;
     27 
     28 import java.io.IOException;
     29 import java.util.HashMap;
     30 
     31 /**
     32  * @hide
     33  */
     34 public class SerialManager {
     35     private static final String TAG = "SerialManager";
     36 
     37     private final Context mContext;
     38     private final ISerialManager mService;
     39 
     40     /**
     41      * {@hide}
     42      */
     43     public SerialManager(Context context, ISerialManager service) {
     44         mContext = context;
     45         mService = service;
     46     }
     47 
     48     /**
     49      * Returns a string array containing the names of available serial ports
     50      *
     51      * @return names of available serial ports
     52      */
     53     public String[] getSerialPorts() {
     54         try {
     55             return mService.getSerialPorts();
     56         } catch (RemoteException e) {
     57             Log.e(TAG, "RemoteException in getSerialPorts", e);
     58             return null;
     59         }
     60     }
     61 
     62     /**
     63      * Opens and returns the {@link android.hardware.SerialPort} with the given name.
     64      * The speed of the serial port must be one of:
     65      * 50, 75, 110, 134, 150, 200, 300, 600, 1200, 1800, 2400, 4800, 9600,
     66      * 19200, 38400, 57600, 115200, 230400, 460800, 500000, 576000, 921600, 1000000, 1152000,
     67      * 1500000, 2000000, 2500000, 3000000, 3500000 or 4000000
     68      *
     69      * @param name of the serial port
     70      * @param speed at which to open the serial port
     71      * @return the serial port
     72      */
     73     public SerialPort openSerialPort(String name, int speed) throws IOException {
     74         try {
     75             ParcelFileDescriptor pfd = mService.openSerialPort(name);
     76             if (pfd != null) {
     77                 SerialPort port = new SerialPort(name);
     78                 port.open(pfd, speed);
     79                 return port;
     80             } else {
     81                 throw new IOException("Could not open serial port " + name);
     82             }
     83         } catch (RemoteException e) {
     84             Log.e(TAG, "exception in UsbManager.openDevice", e);
     85         }
     86         return null;
     87     }
     88 }
     89