+
+// Java packages
+import java.io.IOException;
+import java.net.DatagramPacket;
+import java.net.DatagramSocket;
+import java.net.InetAddress;
+import java.net.SocketException;
+import java.net.UnknownHostException;
+import java.util.concurrent.atomic.AtomicBoolean;
+import java.util.List;
+import java.util.ArrayList;
+import java.util.Map;
+import java.util.HashMap;
+import java.util.concurrent.ConcurrentHashMap;
+import java.util.Set;
+import java.util.HashSet;
+import java.nio.charset.StandardCharsets;
+import java.util.concurrent.Semaphore;
+
+
+/** Class IoTZigbee
+ *
+ * @author Ali Younis <ayounis @ uci.edu>, Changwoo Lee <changwl2 @ uci.edu>
+ * @version 1.0
+ * @since 2016-04-12, 2016-10-28
+ */
+public class IoTZigbee {
+
+ public final int SOCKET_SEND_BUFFER_SIZE = 1024;
+ public final int SOCKET_RECEIVE_BUFFER_SIZE = 1024;
+ public final int SHORT_ADDRESS_UPDATE_TIME_MSEC = 10000;
+ public final int SHORT_ADDRESS_UPDATE_TIME_FAST_MSEC = 500;
+ public final int RESEND_WAIT_TIME = 500;
+
+ /**
+ * IoTZigbee class properties
+ */
+
+ // UDP connection stuff
+ private final String strHostAddress;
+ private final int iSrcPort;
+ private final int iDstPort;
+ private DatagramSocket socket; // the socket interface that we are guarding
+ private boolean didClose; // make sure that the clean up was done correctly
+
+ private final IoTZigbeeAddress zigbeeAddress;
+
+ // list that holds the callbacks
+ private List<IoTZigbeeCallback> callbackList = new ArrayList<IoTZigbeeCallback>();
+
+ /**
+ * IoTZigbee class concurrency and concurrency control
+ */
+ private Thread receiveThread = null;
+
+ private AtomicBoolean endTask = new AtomicBoolean(false);
+ private AtomicBoolean didSuccesfullySendAddress = new AtomicBoolean(false);
+
+ /**
+ * Class constructor
+ */
+ public IoTZigbee(IoTDeviceAddress iotDevAdd, IoTZigbeeAddress zigAddress) throws SocketException, IOException, InterruptedException {
+
+ strHostAddress = iotDevAdd.getHostAddress();
+ iSrcPort = iotDevAdd.getSourcePortNumber();
+ iDstPort = iotDevAdd.getDestinationPortNumber();
+ didClose = false;
+ zigbeeAddress = zigAddress;
+
+ socket = new DatagramSocket(iSrcPort);
+ socket.setSendBufferSize(SOCKET_SEND_BUFFER_SIZE);
+ socket.setReceiveBufferSize(SOCKET_RECEIVE_BUFFER_SIZE);
+
+ receiveThread = new Thread(new Runnable() {
+ public void run() {
+ receieveWorker();
+ }
+ });
+ receiveThread.start();
+ }
+
+ public void init() throws IOException {
+ while (!didSuccesfullySendAddress.get()) {
+
+ sendDeviceAddress();
+
+ try {
+ Thread.sleep(RESEND_WAIT_TIME);
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ }
+ //made by changwoo
+ public void sendChangeSwtichRequest(int packetId, int clusterId, int profileId, int value, int deviceEndpoint) throws IOException {
+ String message = "type: zcl_change_switch_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "value: " + String.format("%01x", value) + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ //made by Jiawei
+ public void sendLockOrUnlockDoorRequest(int packetId, int clusterId, int profileId, int deviceEndpoint, int value) throws IOException {
+ String message = "type: zcl_lock_or_unlock_door_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "value: " + String.format("%01x", value) + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ //made by Jiawei
+ public void sendReadDoorStatusRequest(int packetId, int clusterId, int profileId, int deviceEndpoint, int framecontrol, int commandframe, int attribute_id) throws IOException {
+ String message = "type: zcl_read_door_status_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "framecontrol: " + String.format("%02x", framecontrol) + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ message += "commandframe: " + String.format("%02x", commandframe) + "\n";
+ message += "attribute_id: " + String.format("%04x", attribute_id) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ //made by changwoo
+ public void sendBroadcastingRouteRecordRequest(int packetId) throws IOException {
+ String message = "type: zdo_broadcast_route_record_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ //made by changwoo
+ public void sendEnrollmentResponse(int packetId, int clusterId, int profileId, int deviceEndpoint) throws IOException {
+ String message = "type: zcl_enrollment_response\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ //made by changwoo
+ public void sendWriteAttributesCommand(int packetId, int clusterId, int profileId, int deviceEndpoint) throws IOException {
+ String message = "type: zcl_write_attributes\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ //made by changwoo
+ public void sendManagementPermitJoiningRequest(int packetId, int clusterId, int deviceEndpoint) throws IOException {
+ String message = "type: management_permit_joining_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ public void sendBindRequest(int packetId, int clusterId, int deviceEndpoint) throws IOException {
+ String message = "type: zdo_bind_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ public void sendUnBindRequest(int packetId, int clusterId, int deviceEndpoint) throws IOException {
+ String message = "type: zdo_unbind_request\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ public void sendReadAttributesCommand(int packetId, int clusterId, int profileId, int deviceEndpoint, List<Integer> attributeIds) throws IOException {
+ String message = "type: zcl_read_attributes\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "device_endpoint: " + String.format("%02x", deviceEndpoint) + "\n";
+
+ message += "attribute_ids: ";
+
+ for (Integer i : attributeIds) {
+ message += String.format("%04x", i) + ",";
+ }
+
+ message = message.substring(0, message.length() - 1);
+ message += "\n";
+
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ public void sendConfigureReportingCommand(int packetId, int clusterId, int profileId, int src_endpoint, int dest_endpoint, int attributeId, int dataType, int minReportingInterval, int maxReportingInterval, byte[] reportableChange) throws IOException {
+ String message = "type: zcl_configure_reporting\n";
+ message += "packet_id: " + String.format("%04x", packetId) + "\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ message += "cluster_id: " + String.format("%04x", clusterId) + "\n";
+ message += "profile_id: " + String.format("%04x", profileId) + "\n";
+ message += "src_endpoint: " + String.format("%02x", src_endpoint) + "\n";
+ message += "device_endpoint: " + String.format("%02x", dest_endpoint) + "\n";
+ message += "attribute_id: " + String.format("%04x", attributeId) + "\n";
+ message += "data_type: " + String.format("%02x", dataType) + "\n";
+ message += "min_reporting_interval: " + String.format("%04x", minReportingInterval) + "\n";
+ message += "max_reporting_interval: " + String.format("%04x", maxReportingInterval) + "\n";
+
+ if (reportableChange != null) {
+ message += "reportable_change: ";
+ for (Byte b : reportableChange) {
+ message += String.format("%02x", (int)b);
+ }
+ message += "\n";
+ }
+
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ public void sendConfigureReportingCommand(int packetId, int clusterId, int profileId, int dest_endpoint, int attributeId, int dataType, int minReportingInterval, int maxReportingInterval, byte[] reportableChange) throws IOException {
+ sendConfigureReportingCommand(packetId, clusterId, profileId, 0x00, dest_endpoint, attributeId, dataType, minReportingInterval, maxReportingInterval, reportableChange);
+ }
+
+ public void registerCallback(IoTZigbeeCallback callbackTo) {
+
+ callbackList.add(callbackTo);
+
+ }
+
+ public void close() throws InterruptedException {
+ endTask.set(true);
+
+ // wait for the threads to end
+ receiveThread.join();
+
+ socket.close();
+ didClose = true;
+ }
+
+ /**
+ * close() called by the garbage collector right before trashing object
+ */
+ public void Finalize() throws SocketException, InterruptedException {
+
+ if (!didClose) {
+ close();
+ throw new SocketException("Socket not closed before object destruction, must call close method.");
+ }
+ }
+
+ private void sendDeviceAddress() throws IOException {
+ String message = "type: send_address\n";
+ message += "packet_id: 00\n";
+ message += "device_address_long: " + zigbeeAddress.getAddress() + "\n";
+ System.out.println(message);
+ DatagramPacket sendPacket = new DatagramPacket(message.getBytes(), message.getBytes().length, InetAddress.getByName(strHostAddress), iDstPort);
+ socket.send(sendPacket);
+ }
+
+ private void receieveWorker() {
+ while (!(endTask.get())) {
+
+ byte[] recBuffer = new byte[SOCKET_RECEIVE_BUFFER_SIZE];
+ try {
+ DatagramPacket recPacket = new DatagramPacket(recBuffer, recBuffer.length);
+ socket.receive(recPacket);
+
+ // Convert the UDP data into a string format
+ String dataString = new String(recPacket.getData());
+
+ // split the data by line so we can start procesisng
+ String[] lines = dataString.split("\n");
+
+ Map<String, String> packetData = new HashMap<String, String>();
+ for (String line : lines) {
+
+ // trim the line
+ String trimmedLine = line.trim();
+ // make sure this is a valid data line and not just blank
+ if (trimmedLine.length() == 0) {
+ continue;
+ }
+
+ // Split the data into parts
+ String[] parts = trimmedLine.split(":");
+ parts[0] = parts[0].trim();
+ parts[1] = parts[1].trim();
+ packetData.put(parts[0], parts[1]);
+ }
+
+ if (packetData.get("type").equals("send_address_response")) {
+ didSuccesfullySendAddress.set(true);
+
+ } else {
+ IoTZigbeeMessage callbackMessage = null;
+
+/*
+ // made by changwoo
+ if (packetData.get("type").equals("zcl_match_descriptor_response")) {
+ System.out.println("zcl_match_descriptor_response message arrives");
+
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+ boolean successOrFail = false;
+ if(packetData.get("attributes").equals("success")) successOrFail=true;
+
+ callbackMessage = new IoTZigbeeMessageMatchDescriptorResponse(packetId, clusterId, profileId, successOrFail);
+
+ }
+*/
+
+ // made by changwoo
+ if (packetData.get("type").equals("zcl_zone_status_change_notification")){
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+ int status = Integer.parseInt(packetData.get("status"), 10);
+ boolean successOrFail = false;
+ if(packetData.get("attributes").equals("success")) successOrFail=true;
+ callbackMessage = new IoTZigbeeMessageZclZoneStatusChangeNotification(packetId, clusterId, profileId, status, successOrFail);
+
+ // made by yuting
+ }else if (packetData.get("type").equals("zcl_change_switch_response")){
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+ int status = Integer.parseInt(packetData.get("status"), 10);
+ boolean successOrFail = false;
+ if(packetData.get("attributes").equals("success")) successOrFail=true;
+ callbackMessage = new IoTZigbeeMessageZclChangeSwitchResponse(packetId, clusterId, profileId, status, successOrFail);
+
+ //made by changwoo
+ } else if (packetData.get("type").equals("zcl_write_attributes_response")) {
+
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+ boolean successOrFail = false;
+ if(packetData.get("attributes").equals("success")) successOrFail=true;
+
+ callbackMessage = new IoTZigbeeMessageZclWriteAttributesResponse(packetId, clusterId, profileId, successOrFail);
+
+ } else if (packetData.get("type").equals("zcl_read_attributes_response")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+
+ List<IoTZigbeeMessageZclReadAttributesResponse.Attribute> attrList = new ArrayList<IoTZigbeeMessageZclReadAttributesResponse.Attribute>();
+
+ String[] attributes = packetData.get("attributes").split(";");
+ for (String attr : attributes) {
+ attr = attr.trim();
+ String[] parts = attr.split(",");
+
+ if (parts.length == 2) {
+ parts[0] = parts[0].trim();
+ parts[1] = parts[1].trim();
+
+ IoTZigbeeMessageZclReadAttributesResponse.Attribute at = new IoTZigbeeMessageZclReadAttributesResponse.Attribute(Integer.parseInt(parts[0], 16), 0, false, null);
+ attrList.add(at);
+ } else {
+ parts[0] = parts[0].trim();
+ parts[1] = parts[1].trim();
+ parts[2] = parts[2].trim();
+ parts[3] = parts[3].trim();
+ IoTZigbeeMessageZclReadAttributesResponse.Attribute at = new IoTZigbeeMessageZclReadAttributesResponse.Attribute(Integer.parseInt(parts[0], 16), Integer.parseInt(parts[1], 16), true, hexStringToByteArray(parts[3]));
+ attrList.add(at);
+ }
+ }
+
+ callbackMessage = new IoTZigbeeMessageZclReadAttributesResponse(packetId, clusterId, profileId, attrList);
+
+ } else if (packetData.get("type").equals("zcl_configure_reporting_response")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+
+ if (packetData.get("attributes").equals("all_success")) {
+ callbackMessage = new IoTZigbeeMessageZclConfigureReportingResponse(packetId, clusterId, profileId, true, null);
+ } else {
+ List<IoTZigbeeMessageZclConfigureReportingResponse.Attribute> attrList = new ArrayList<IoTZigbeeMessageZclConfigureReportingResponse.Attribute>();
+
+ String[] attributes = packetData.get("attributes").split(";");
+ for (String attr : attributes) {
+ attr = attr.trim();
+ String[] parts = attr.split(",");
+ parts[0] = parts[0].trim();
+ parts[1] = parts[1].trim();
+ parts[2] = parts[2].trim();
+ IoTZigbeeMessageZclConfigureReportingResponse.Attribute at = new IoTZigbeeMessageZclConfigureReportingResponse.Attribute(Integer.parseInt(parts[0], 16), parts[1].equals("success"), parts[2].equals("reported"));
+ attrList.add(at);
+ }
+ callbackMessage = new IoTZigbeeMessageZclConfigureReportingResponse(packetId, clusterId, profileId, false, attrList);
+ }
+
+ } else if (packetData.get("type").equals("zcl_report_attributes")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ int clusterId = Integer.parseInt(packetData.get("cluster_id"), 16);
+ int profileId = Integer.parseInt(packetData.get("profile_id"), 16);
+
+ List<IoTZigbeeMessageZclReportAttributes.Attribute> attrList = new ArrayList<IoTZigbeeMessageZclReportAttributes.Attribute>();
+
+ String[] attributes = packetData.get("attributes").split(";");
+ for (String attr : attributes) {
+ attr = attr.trim();
+ String[] parts = attr.split(",");
+
+ parts[0] = parts[0].trim();
+ parts[1] = parts[1].trim();
+ parts[2] = parts[2].trim();
+ IoTZigbeeMessageZclReportAttributes.Attribute at = new IoTZigbeeMessageZclReportAttributes.Attribute(Integer.parseInt(parts[0], 16), Integer.parseInt(parts[1], 16), hexStringToByteArray(parts[2]));
+ attrList.add(at);
+ }
+
+ callbackMessage = new IoTZigbeeMessageZclReportAttributes(packetId, clusterId, profileId, attrList);
+
+ } else if (packetData.get("type").equals("zcl_read_attributes")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ boolean success = packetData.get("response").equals("success");
+
+ if (success) {
+ callbackMessage = new IoTZigbeeMessageZclReadAttributes(packetId, success, "");
+ } else {
+ callbackMessage = new IoTZigbeeMessageZclReadAttributes(packetId, success, packetData.get("reason"));
+ }
+
+ } else if (packetData.get("type").equals("zcl_configure_reporting")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ boolean success = packetData.get("response").equals("success");
+
+ if (success) {
+ callbackMessage = new IoTZigbeeMessageZclConfigureReporting(packetId, success, "");
+ } else {
+ callbackMessage = new IoTZigbeeMessageZclConfigureReporting(packetId, success, packetData.get("reason"));
+ }
+
+ } else if (packetData.get("type").equals("zdo_bind_request")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ boolean success = packetData.get("response").equals("success");
+
+ if (success) {
+ callbackMessage = new IoTZigbeeMessageZdoBindResponse(packetId, success, "");
+ } else {
+ callbackMessage = new IoTZigbeeMessageZdoBindResponse(packetId, success, packetData.get("reason"));
+ }
+ }
+
+ else if (packetData.get("type").equals("zdo_unbind_request")) {
+ int packetId = Integer.parseInt(packetData.get("packet_id"), 16);
+ boolean success = packetData.get("response").equals("success");
+
+ if (success) {
+ callbackMessage = new IoTZigbeeMessageZdoUnBindResponse(packetId, success, "");
+ } else {
+ callbackMessage = new IoTZigbeeMessageZdoUnBindResponse(packetId, success, packetData.get("reason"));
+ }
+ }
+
+ if (callbackMessage != null) {
+ for (IoTZigbeeCallback c : callbackList) {
+ c.newMessageAvailable(callbackMessage);
+ }
+ }
+ }
+
+
+
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+ }
+
+ public static String changeHexEndianness(String hexData) {
+
+ List<String> pairedValues = new ArrayList<String>();
+ for (int i = 0; i < hexData.length(); i += 2) {
+ String part = hexData.substring(i, Math.min(i + 2, hexData.length()));
+ pairedValues.add(part);
+ }
+
+ String retString = "";
+ for (int i = (pairedValues.size() - 1); i >= 0; i--) {
+ retString += pairedValues.get(i);
+ }
+ return retString;
+ }
+
+ // taken from: http://stackoverflow.com/questions/140131/convert-a-string-representation-of-a-hex-dump-to-a-byte-array-using-java
+ public static byte[] hexStringToByteArray(String s) {
+ int len = s.length();
+ byte[] data = new byte[len / 2];
+ for (int i = 0; i < len; i += 2) {
+ data[i / 2] = (byte) ((Character.digit(s.charAt(i), 16) << 4)
+ + Character.digit(s.charAt(i + 1), 16));
+ }
+ return data;
+ }
+
+}
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
+
projects / iot2.git / blobdiff