android - 为 android (API 15) 从 hdp 设备解析数据

Question

我正在使用 HDP 样本并且我有一个血压传感器 (http://www.andonline.com/medical/products/details.php?catname=&product_num=UA-767PBT-C)。我从中获取数据，但我不知道如何将其解析为人类可读的内容。

这是我到目前为止尝试过的类似：

while(fis.read(data) > -1) {
    String value = null;
    BigInteger bi = new BigInteger(data);
//  for(byte b:data){
//  value+=b;
//  }

Log.d("read data binary", "the data "+bi.toString(2));

Log.d("read data decimal", "the data "+bi.toString());

Log.d("read data hexa", "the data "+bi.toString(16));

Log.d("read data pure", "the data "+data);

//  Log.d("read data in for", "the data "+value);

我得到类似的东西：

05-01 20:17:56.208: D/读取数据六进制(4760):数据-00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005-01 20:17:56.208: D/丁/丁/丁/丁/read data pure (4760): data [B@40d67e70 05-01 20:18:04.626: D/ read data binary(4760):数据-00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005-01 20:18:06.828: D/丁/丁/丁/丁/读取数据十进制(4760):数据-0576160767677597715480386547121881849032192752633260581611407011853157254121988717573734877969134052424768517755583145720631774483604063081880432610973919518566690840732483917669693281934080872472643538204409333772095149193754543981303816862226602900932185731291218078343359909141826950522259981065979565825353771918309503909195400250270592097346140180255661323498680525840321588156171474185334819513148415443728234379507600359229093281074473243790684599034208199088683338454677621174483491191074351971358537028690315653099028602232230871902656137643830877283946170700882775921345249124458496887893344541537861170446155618915889154457316279931810886758741778466015814266662502325019252008275552963949417505527790579950678630694847351385927023263169674418774269260054062018597523133414318281716321106676019125971120320369677915824373299981376100493615932096583905733998938604880344209979507207389461881566668730566105933697505053128626488714804178563386957441767127359946655045064697358061551371027355282580217366653953689149217957268335824794738057555973823505958847701190906572003379211131572099550194123133402637104389561589064917255194334844269183378807442410026970212304915398750162342030862720562356574960395088223916289512342191699176716017309140213638536098383639091011729776310430620082118888497862622038695401701710387402100087840950940846152066514765108855402410952099725385450736354603210781118974198215554193785785859382435002755250153009251411946038850315108576684984106702193657963347897709677566091677495576556681656068507314031372074156531214767021895212919495909358260588291818568553609578646758938365326563499166628415041706131521582622947791012917744251071555344476280175567553030365868879087958701356749275597544555441192209535828193783528540378443653793007478915664994969246893177676787034473169357958664807853394146528881072611495728346161885141354339050534315795112871110590890270640490572109200167490678091854953195502952814139817930997734428369811037792170901222000605941722889749066363212792188473959033320542149557873698406208807103283915464017738102761293835485103233871320167686509199843523640244281618906825238870441363628235844748462133103276301174838663071551726880398794656562034968579187231564731597466312085292931401626425031219367372880105669524021703795487930074660269606852850348561943174481059683047939007210225601490478637988520094254176801854728550931572581072192577323801255123376568421142859931699183781795327546624931509936963718203679145081654772615676143950491156457709879833213770861474166550002893895004539378141404484514321501254425186584306317322820119080073521246583023928855680771674834459485547140458179583411000552946721557465941584607592684759973667328534420531200360125049393165249939125462273655943012452796198719607891446709638525939136041376672224464954765768003499209670257743095489459555485012164498854972198547405433983837840151414071849172134515511345320372998343869719318698995124097830586163312565522099108379088383907029795001179557033732925854106484925992046251994418246510444641426185467437327268959477603463411587255087111960727666751094267733565670470254329185066819049347190875320805571892878980923324446702125088753743095489459555485012164498854972198547405433983837840151414071849172134515511345320372998343869719318698995124097830586163312565522099108379088383907029795001179557033732925854106484925992046251994418246510444641426185467437327268959477603463411587255087111960727666751094267733565670470254329185066819049347190875320805571892878980923324446702125088753743095489459555485012164498854972198547405433983837840151414071849172134515511345320372998343869719318698995124097830586163312565522099108379088383907029795001179557033732925854106484925992046251994418246510444641426185467437327268959477603463411587255087111960727666751094267733565670470254329185066819049347190875320805571892878980923324446702125088753

任何人都知道如何解析它，好吗？

PS：很抱歉把所有东西都放在了logcat里，但也许有人发现了任何联系

Answer 1

我找到了解决方案。我需要传感器发送的确切字节数+传感器发送信息的方式。

我将把为我的血压计解析数据的部分放在课堂上。

 public String byte2hex(byte[] b)
    {
     // String Buffer can be used instead
       String hs = "";
       String stmp = "";

       for (int n = 0; n < b.length; n++)
       {
          stmp = (java.lang.Integer.toHexString(b[n] & 0XFF));

          if (stmp.length() == 1)
          {
             hs = hs + "0" + stmp;
          }
          else
          {
             hs = hs + stmp;
          }

          if (n < b.length - 1)
          {
             hs = hs + "";
          }
       }

       return hs;
    }

    public static int byteToUnsignedInt(byte b) {
        return 0x00 << 24 | b & 0xff;
      }

    // Thread to read incoming data received from the HDP device.  This sample application merely
    // reads the raw byte from the incoming file descriptor.  The data should be interpreted using
    // a health manager which implements the IEEE 11073-xxxxx specifications.
    private class ReadThread extends Thread {
        private ParcelFileDescriptor mFd;

        public ReadThread(ParcelFileDescriptor fd) {
            super();
            mFd = fd;
        }


        @Override
        public void run() {
            FileInputStream fis = new FileInputStream(mFd.getFileDescriptor());
            byte data[] = new byte[300];
            try {
                while(fis.read(data) > -1) {
                    // At this point, the application can pass the raw data to a parser that
                    // has implemented the IEEE 11073-xxxxx specifications.  Instead, this sample
                    // simply indicates that some data has been received.                   
                    if (data[0] != (byte) 0x00)
                    {
                        String test = byte2hex(data);
                        Log.i(TAG, test);
                        if(data[0] == (byte) 0xE2){
                            Log.i(TAG, "E2");
                            count = 1;
                            (new WriteThread(mFd)).start();
                            try {
                                sleep(100);
                            } catch (InterruptedException e) {
                                e.printStackTrace();
                            }
                            count = 2;
                            (new WriteThread(mFd)).start();
                        }
                        else if (data[0] == (byte)0xE7){
                            Log.i(TAG, "E7");

                            //work for legacy device...
                            if (data[18] == (byte) 0x0d && data[19] == (byte) 0x1d)  //fixed report
                            {
                                count = 3; 
                                //set invoke id so get correct response
                                invoke = new byte[] { data[6], data[7] };
                                //write back response
                                (new WriteThread(mFd)).start();     
                                //parse data!!
                                int length = data[21];
                                Log.i(TAG, "length is " + length);
                                // check data-req-id 
                                int report_no = data[22+3];
                                int number_of_data_packets = data[22+5];
                                //packet_start starts from handle 0 byte
                                int packet_start = 30;
                                final int SYS_DIA_MAP_DATA = 1;
                                final int PULSE_DATA = 2;
                                final int ERROR_CODE_DATA = 3;
                                for (int i = 0; i < number_of_data_packets; i++)
                                {
                                    int obj_handle = data[packet_start+1];
                                    switch (obj_handle)
                                    {
                                    case SYS_DIA_MAP_DATA:
                                        int sys = byteToUnsignedInt(data[packet_start+9]);
                                        int dia = byteToUnsignedInt(data[packet_start+11]);
                                        int map = byteToUnsignedInt(data[packet_start+13]);
                                        //create team string... 9+13~9+20   
                                        Log.i(TAG, "sys is "+ sys);
                                        sendMessage(RECEIVED_SYS, sys);
                                        Log.i(TAG, "dia is "+ dia);
                                        sendMessage(RECEIVED_DIA, dia);
                                        Log.i(TAG, "map is "+ map);
                                        //test
//                                      sendMessage(RECEIVED_MAP, map);
                                        break;
                                    case PULSE_DATA:
                                        //parse
                                        int pulse = byteToUnsignedInt(data[packet_start+5]);
                                        Log.i(TAG, "pulse is " + pulse);
                                        sendMessage(RECEIVED_PUL, pulse);
                                        break;
                                    case ERROR_CODE_DATA:
                                        //need more signal
                                        break;
                                    }
                                    packet_start += 4 + data[packet_start+3];   //4 = ignore beginning four bytes
                                }                               
                            }
                            else
                            {
                                count = 2;
                            }
                        }
                        else if (data[0] == (byte) 0xE4)
                        {
                            count = 4;
                            (new WriteThread(mFd)).start();
//                          sendMessage();
                        }
                        //zero out the data
                        for (int i = 0; i < data.length; i++){
                            data[i] = (byte) 0x00;
                        }
                    }
                    sendMessage(STATUS_READ_DATA, 0);
                }
            } catch(IOException ioe) {}
            if (mFd != null) {
                try {
                    mFd.close();
                } catch (IOException e) { /* Do nothing. */ }
            }   
            sendMessage(STATUS_READ_DATA_DONE, 0);
        }
    }


    private class WriteThread extends Thread {
        private ParcelFileDescriptor mFd;

        public WriteThread(ParcelFileDescriptor fd) {
            super();
            mFd = fd;
        }

        @Override
        public void run() {
            FileOutputStream fos = new FileOutputStream(mFd.getFileDescriptor());
//            FileInputStream fis = new FileInputStream(mFd.getFileDescriptor());
            final byte data_AR[] = new byte[] {         (byte) 0xE3, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x2C, 
                                                        (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x50, (byte) 0x79,
                                                        (byte) 0x00, (byte) 0x26,
                                                        (byte) 0x80, (byte) 0x00, (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x80, (byte) 0x00,
                                                        (byte) 0x80, (byte) 0x00, (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x80, (byte) 0x00, (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x08,  //bt add for phone, can be automate in the future
                                                        (byte) 0x3C, (byte) 0x5A, (byte) 0x37, (byte) 0xFF, 
                                                        (byte) 0xFE, (byte) 0x95, (byte) 0xEE, (byte) 0xE3,
                                                        (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x00, 
                                                        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00};
            final byte data_DR[] = new byte[] {         (byte) 0xE7, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x12,
                                                        (byte) 0x00, (byte) 0x10,
                                                        (byte) invoke[0], (byte) invoke[1],
                                                        (byte) 0x02, (byte) 0x01,
                                                        (byte) 0x00, (byte) 0x0A,
                                                        (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x00, (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x0D, (byte) 0x1D,
                                                        (byte) 0x00, (byte) 0x00 };

            final byte get_MDS[] = new byte[] {         (byte) 0xE7, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x0E,
                                                        (byte) 0x00, (byte) 0x0C,
                                                        (byte) 0x00, (byte) 0x24,
                                                        (byte) 0x01, (byte) 0x03,
                                                        (byte) 0x00, (byte) 0x06,
                                                        (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x00 };

            final byte data_RR[] = new byte[] {         (byte) 0xE5, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x02,
                                                        (byte) 0x00, (byte) 0x00 };

            final byte data_RRQ[] = new byte[] {        (byte) 0xE4, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x02,
                                                        (byte) 0x00, (byte) 0x00 };

            final byte data_ABORT[] = new byte[] {      (byte) 0xE6, (byte) 0x00,
                                                        (byte) 0x00, (byte) 0x02,
                                                        (byte) 0x00, (byte) 0x00 };
            try {
                Log.i(TAG, String.valueOf(count));
                if (count == 1)
                {
                    fos.write(data_AR);
                    Log.i(TAG, "Association Responsed!");
                }  
                else if (count == 2)
                {
                    fos.write(get_MDS);
                    Log.i(TAG, "Get MDS object attributes!");
//                  fos.write(data_ABORT);
                }
                else if (count == 3) 
                {
                    fos.write(data_DR);
                    Log.i(TAG, "Data Responsed!");
                }
                else if (count == 4)
                {
                    fos.write(data_RR);
                    Log.i(TAG, "Data Released!");
                }
            } catch(IOException ioe) {}
        }
    }

为了理解此代码，您还必须阅读 IEEE 11073 规范。每种传感器都有自己的字节数。

这段代码不是我做的，有人给我的。如果他要求我删除它，我会:)