android串口so文件.zip

package android_serialport_api; import android.util.Log; import java.io.File; import java.io.FileDescriptor; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; import java.io.InputStream; import java.io.OutputStream; public class SerialPort { private static final String TAG = "SerialPort"; /* * Do not remove or rename the field mFd: it is used by native method close(); */ private FileDescriptor mFd; private FileInputStream mFileInputStream; private FileOutputStream mFileOutputStream; public SerialPort(File device) throws SecurityException, IOException { this(device,9600,0,8,1); } /** * 打开串口 *@param device 串口设备文件 *@param baudrate 波特率，一般是9600 *@param parity 奇偶校验，0 None, 1 Odd, 2 Even *@param dataBits 数据位，5 - 8 *@param stopBit 停止位，1 或 2 * */ public SerialPort(File device, int baudrate, int parity, int dataBits, int stopBit) throws SecurityException, IOException { /* Check access permission */ if (!device.canRead() || !device.canWrite()) { try { /* Missing read/write permission, trying to chmod the file */ Process su; su = Runtime.getRuntime().exec("/system/xbin/su"); String cmd = "chmod 666 " + device.getAbsolutePath() + "\n" + "exit\n"; su.getOutputStream().write(cmd.getBytes()); if ((su.waitFor() != 0) || !device.canRead() || !device.canWrite()) { throw new SecurityException(); } } catch (Exception e) { e.printStackTrace(); throw new SecurityException(); } } mFd = open(device.getAbsolutePath(), baudrate, parity, dataBits, stopBit); if (mFd == null) { Log.e(TAG, "native open returns null"); throw new IOException(); } mFileInputStream = new FileInputStream(mFd); mFileOutputStream = new FileOutputStream(mFd); } // Getters and setters public InputStream getInputStream() { return mFileInputStream; } public OutputStream getOutputStream() { return mFileOutputStream; } // JNI private native static FileDescriptor open(String path, int baudrate, int parity, int dataBits, int stopBit); public native void close(); static { try { System.loadLibrary("serial_port"); } catch ( Exception ex){ ex.printStackTrace(); } } }