b01e8bf57b
SerialManager: provides access to serial ports SerialPort: for reading and writing data to and from serial ports IO with both array based and direct ByteBuffers is supported. Accessing serial ports requires android.permission.SERIAL_PORT permission Each platform must configure list of supported serial ports in the config_serialPorts resource overlay (this is needed to prevent apps from accidentally accessing the bluetooth or other system UARTs). In addition, the platform uevent.rc file must set the owner to the /dev/tty* files to "system" so the framework can access the port. Signed-off-by: Mike Lockwood <lockwood@android.com>
59 lines
1.9 KiB
Java
59 lines
1.9 KiB
Java
/*
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* Copyright (C) 2011 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions an
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* limitations under the License.
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*/
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package com.android.server;
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import android.content.Context;
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import android.hardware.ISerialManager;
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import android.os.ParcelFileDescriptor;
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import java.io.File;
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import java.util.ArrayList;
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public class SerialService extends ISerialManager.Stub {
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private final Context mContext;
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private final String[] mSerialPorts;
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public SerialService(Context context) {
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mContext = context;
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mSerialPorts = context.getResources().getStringArray(
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com.android.internal.R.array.config_serialPorts);
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}
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public String[] getSerialPorts() {
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mContext.enforceCallingOrSelfPermission(android.Manifest.permission.SERIAL_PORT, null);
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ArrayList<String> ports = new ArrayList<String>();
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for (int i = 0; i < mSerialPorts.length; i++) {
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String path = mSerialPorts[i];
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if (new File(path).exists()) {
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ports.add(path);
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}
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}
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String[] result = new String[ports.size()];
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ports.toArray(result);
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return result;
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}
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public ParcelFileDescriptor openSerialPort(String path) {
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mContext.enforceCallingOrSelfPermission(android.Manifest.permission.SERIAL_PORT, null);
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return native_open(path);
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}
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private native ParcelFileDescriptor native_open(String path);
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}
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