android-serialport-api串口工具测试随笔

android-serialport-api是网上下载的，如果原作者看到，请留个名，谢谢

以下是随笔，很乱的，也有错误和笔误。--记录的目的是后面NDK开发做前期的铺垫

 

在data/data/android.serialport.sample中放有lib和shared_prefs中android.serialport.sample_preferences----来保存串口和波特率参数前面我们说过，Android系统会将Preference元素的值存储在sharedPreference文件中。该文件存放路径位于

DDMS视图下的data/data/[packgename]/shared_prefs/文件下，命名约定为：packagename_preferencse.xml。

所以android.serialport.sample_preferences.xml就会存有我们在SerialPortPreferences类中设定的设备和波特率，其就是一个共享文件哦

 

public class Application extends android.app.Application {

 

       public SerialPortFinder mSerialPortFinder = new SerialPortFinder();

       private SerialPort mSerialPort = null;

 

       public SerialPort getSerialPort() throws SecurityException, IOException, InvalidParameterException {

              if (mSerialPort == null) {

                     /* Read serial port parameters */

           

                     /* Check parameters */

                     if ( (path.length() == 0) || (baudrate == -1)) {

                            throw new InvalidParameterException();

                     }

 

                     /* Open the serial port */

                     mSerialPort = new SerialPort(new File(path), baudrate);

              }

              return mSerialPort;

       }

 

       public void closeSerialPort() {

              if (mSerialPort != null) {

                     mSerialPort.close();

                     mSerialPort = null;

              }

       }

 

 

1,跳转到SerialPortPreferences；--》建立”setup”

获取Application自定义的数据类，类成员mSerialPortFinder，在Application中构造（即初始化）

addPreferencesFromResource(R.xml.serial_port_preferences);设置界面布局，对于device和baudrates进行配置

ListPreference类！！！！！！保存

在data/data/android.serialport.sample中lib和shared_prefs中android.serialport.sample_preferences

获取设备下面所有串口设备和路径，SerialPortFinder类！！！！

SerialPortFinder类！！！！------------------------如下

itdriv = getDrivers().iterator();iterator为迭代器给getDrivers加上一个迭代器，遍历所有的驱动。

 

 

 

Getdrivers中proc/tty/drivers遍历控制台设备

得到要的驱动设备的名称和路径：

1， 先遍历itdriv = getDrivers().iterator();即getDRIVERS

吧每遍历到一个即添加到设备mDrivers.add(new Driver(w[0], w[1])); driver类

 

 

 

 

public String[] getAllDevices() {Vector<String> devices = new Vector<String>();// Parse each driverIterator<Driver> itdriv;try {//frankLog.d(TAG, "getAllDevices1: ");itdriv = getDrivers().iterator();//先遍历注册所有符合要求的终端设备while(itdriv.hasNext()) {Log.d(TAG, "getAllDevices2: ");Driver driver = itdriv.next();Iterator<File> itdev = driver.getDevices().iterator();//比较/dev下路径前缀是否相同的保存下来

 

 

 然后再到/dev下面去所搜前缀相同的设备名：

譬如：上面遍历到/dev/tty，那么这里就会搜索有没有dev/tty0，1，2，3等等类推

 

这样最后就能在初始化的地方映射到/dev/ttyGS0  dev/s3c2410_serial0/1/2/3等等

 

           while(itdev.hasNext()) {

           Log.d(TAG, "getAllDevices3: ");

                  String device = itdev.next().getName();

                  String value = String.format("%s (%s)", device, driver.getName());

                  devices.add(value);

              }

           }

       } catch (IOException e) {

           e.printStackTrace();

       }

       return devices.toArray(new String[devices.size()]);

    }

 

    public String[] getAllDevicesPath() {

       Vector<String> devices = new Vector<String>();

       // Parse each driver

       Iterator<Driver> itdriv;

       try {

           //frank

           Log.d(TAG, "getAllDevicesPath1: ");

           itdriv = getDrivers().iterator();         while(itdriv.hasNext()) {

              Log.d(TAG, "getAllDevicesPath1: ");

              Driver driver = itdriv.next();

              Iterator<File> itdev = driver.getDevices().iterator();

              while(itdev.hasNext()) {

                  Log.d(TAG, "getAllDevicesPath1: ");

                  String device = itdev.next().getAbsolutePath();

                  devices.add(device);

              }

           }

       } catch (IOException e) {

           e.printStackTrace();

       }

       return devices.toArray(new String[devices.size()]);

    }

}

 

 

输出

D/SerialPort(  577): getAllDevices1:

D/SerialPort(  577): Found new driver1: /dev/ttyGS

D/SerialPort(  577): Found new driver3: 0

D/SerialPort(  577): Found new driver2: 251

D/SerialPort(  577): Found new driver0: g_serial

D/SerialPort(  577): Found new driver1: /dev/ttyUSB

D/SerialPort(  577): Found new driver3: 0-253

D/SerialPort(  577): Found new driver2: 188

D/SerialPort(  577): Found new driver0: usbserial

D/SerialPort(  577): Found new driver1: /dev/s3c2410_serial

D/SerialPort(  577): Found new driver3: 64-67

D/SerialPort(  577): Found new driver2: 204

D/SerialPort(  577): Found new driver0: ttySAC

 

 

D/SerialPort(  577): getAllDevices2:

D/SerialPort(  577): Found new deviceww: /dev/ttyGS0

D/SerialPort(  577): getAllDevices3:

D/SerialPort(  577): getAllDevices2:

D/SerialPort(  577): getAllDevices2:

D/SerialPort(  577): Found new deviceww: /dev/s3c2410_serial0

D/SerialPort(  577): Found new deviceww: /dev/s3c2410_serial1

D/SerialPort(  577): Found new deviceww: /dev/s3c2410_serial2

D/SerialPort(  577): Found new deviceww: /dev/s3c2410_serial3

D/SerialPort(  577): getAllDevices3:

D/SerialPort(  577): getAllDevices3:

D/SerialPort(  577): getAllDevices3:

D/SerialPort(  577): getAllDevices3:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

D/SerialPort(  577): getAllDevicesPath1:

第一部分”setup”的初始化总的device基本到这里，遍历出了接口，波特率类似

 

记录到这里