You've already forked ChameleonBLEAPI
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https://github.com/RfidResearchGroup/ChameleonBLEAPI.git
synced 2026-05-12 11:20:47 -07:00
225 lines
8.3 KiB
Java
225 lines
8.3 KiB
Java
package com.proxgrind.chameleon.executor;
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import com.proxgrind.chameleon.utils.tools.HexUtil;
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import com.proxgrind.chameleon.utils.system.LogUtils;
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import com.proxgrind.chameleon.utils.system.SystemUtils;
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import com.proxgrind.chameleon.defined.IChameleonExecutor;
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import com.proxgrind.chameleon.utils.chameleon.ChameleonResult;
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import com.proxgrind.devices.DriverInterface;
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import java.io.ByteArrayOutputStream;
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import java.io.IOException;
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/**
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* @author DXL
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* BLE执行器实现类,具体封装了执行和获得返回值的函数!
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* 由于BLE的通讯原因,我们必须实现封包和解包!
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*/
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public class ChameleonStdExecutor implements IChameleonExecutor {
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//static final Object lock = new Object();
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static DriverInterface mCom;
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public static String version = "not";
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/**
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* 设备初始化方法!
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*
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* @param com 传入的串口通信接口!
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*/
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@Override
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public boolean initExecutor(DriverInterface com) {
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mCom = com;
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//判断一下设备是否可以正常开启关闭!
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byte[] result = requestChameleon("VERSION?", 2000, false);
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// 重发!
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if (result == null)
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result = requestChameleon("VERSION?", 2000, false);
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// 判断结果!
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if (result != null && ChameleonResult.isCommandResponse(result)) {
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ChameleonResult r = new ChameleonResult(null);
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if (r.processCommandResponse(result)) {
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version = r.getCmdResponseData();
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ChameleonExecutorProxy.setExecutor(this);
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LogUtils.d("ChameleonExecutorProxy初始化成功: " + this);
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return true;
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}
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}
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LogUtils.d("ChameleonExecutorProxy初始化失败: " + new String(result != null ? result : new byte[0]));
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return false;
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}
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/**
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* @param at 指令,ascii编码集,需要在后缀附带\r换行!
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* @param timeout 超时,多久之后接收不到完整的数据帧自动返回?
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* @return 设备的返回信息,可能超时(无返回值),如果超时则返回null,否则返回对应命令的应答!
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*/
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@Override
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public byte[] requestChameleon(String at, int timeout, boolean xmodemMode) {
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try {
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//请求并且判断结果!
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if (requestChameleon(at, timeout) == -1) return null;
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//初始化必须的变量
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ByteArrayOutputStream bos = new ByteArrayOutputStream(512);
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long currentTime = System.currentTimeMillis();
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//Log.d(LOG_TAG, "得到锁成功,当前线程ID: " + Thread.currentThread().getId());
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do {
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if (SystemUtils.isTimeout(currentTime, timeout)) return null;
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//开始接收,每次接收一个字节!
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byte tmpByte = read(1);
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if (tmpByte != -1) {
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//接收完毕,有有效的字节!!!
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bos.write(tmpByte);
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//Log.d(LOG_TAG, "打印接收到的字节: " + HexUtil.toHexString(tmpByte));
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//有有效数据,进行超时拖延!
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currentTime = System.currentTimeMillis();
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//判断到换行,则可能是一帧的结束!
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// FIXME: 2019/4/21 谨记,上传或下载将会打开xmodem通道,此时应当进行判断,断定下一步的操作!
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if (tmpByte == 0x0A) {
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//Log.d(LOG_TAG, "有换行,下一步判断是否需要继续接收!");
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if (!xmodemMode) {
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//延迟判断新行,最大限度提升成功率!!!
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tmpByte = read(50);
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if (tmpByte != -1) {
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//Log.d(LOG_TAG, "需要");
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bos.write(tmpByte);
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currentTime = System.currentTimeMillis();
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} else {
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//Log.d(LOG_TAG, "不需要");
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//接收完毕,直接返回!
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//Log.d(LOG_TAG, "锁释放完成: " + Thread.currentThread().getId());
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return bos.toByteArray();
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}
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} else {
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return bos.toByteArray();
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}
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}
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}
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} while (true); //超时中处理!
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} catch (IOException e) {
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e.printStackTrace();
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return null;
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}
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}
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/**
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* 在指定的时间内接收指定的长度的值,
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*
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* @param timeout 超时值
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* @param length 欲接收的长度!
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* @return 接收结果!
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*/
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@Override
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public byte[] requestChameleon(int timeout, int length) {
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byte[] ret = new byte[length];
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int pos = 0;
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long currentTime = System.currentTimeMillis();
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//Log.d(LOG_TAG, "得到锁成功,当前线程ID: " + Thread.currentThread().getId());
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do {
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//开始接收,每次接收一个字节!
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byte tmpByte = read(1);
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if (tmpByte != -1) {
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ret[pos] = tmpByte;
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if (++pos == length) break;
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}
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} while (SystemUtils.isTimeout(currentTime, timeout)); //超时中处理!
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return ret;
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}
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/**
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* @param at 指令,ascii编码集,需要在后缀附带\r换行!
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* @param timeout 超时,多久之后接收不到完整的数据帧自动返回?
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* @return 发送成功的字节数,如果发送失败则返回 -1
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*/
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@Override
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public int requestChameleon(String at, int timeout) throws IOException {
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if (at == null) return -1;
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//Log.d(LOG_TAG, "尝试得到锁,当前线程ID: " + Thread.currentThread().getId());
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//发送命令必须回应,否则系命令错误!
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at = checkAT(at);
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byte[] sendBuf = HexUtil.getAsciiBytes(at);
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return mCom.write(sendBuf, 0, sendBuf.length, timeout);
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}
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/**
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* @param at 指令!
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* @return 如果命令带\r后缀,则直接返回,否则添加!
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*/
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protected String checkAT(String at) {
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return at.endsWith("\r") ? at : (String.format("%s\r", at));
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}
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/**
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* 读取一个字节,简化读取!
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*
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* @param timeout 超时值
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* @return 读取结果,-1为失败!
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*/
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protected byte read(int timeout) {
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byte[] b = new byte[1];
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try {
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int len = mCom.read(b, 0, 1, timeout);
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if (len > 0) {
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return b[0];
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}
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return -1;
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} catch (IOException e) {
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e.printStackTrace();
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}
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return -1;
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}
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/**
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* 得到通信端口!
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*
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* @return 通信端口!
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*/
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@Override
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public DriverInterface getDriver() {
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LogUtils.w("警告,直接操作COM端口可能产生通信数据串行干扰的问题," +
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"请务必保证同时操作com的只有一个Thread: " + Thread.currentThread().getId());
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return mCom;
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}
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/**
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* 清除可能缓存的数据!
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*
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* @param timeout 超时值
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* @return 被清除的字节个数
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*/
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@Override
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public int clear(int timeout) {
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int count = 0;
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long currentTime = System.currentTimeMillis();
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//Log.d(LOG_TAG, "得到锁成功,当前线程ID: " + Thread.currentThread().getId());
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do {
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//开始接收,每次接收一个字节!
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byte tmpByte = read(1);
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if (tmpByte != -1) {
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++count;
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}
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} while (System.currentTimeMillis() - currentTime < timeout); //超时中处理!
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return count;
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}
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@Override
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public void close() {
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if (getDriver() != null) {
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try {
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getDriver().close();
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} catch (IOException e) {
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e.printStackTrace();
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}
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}
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}
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@Override
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public String getVersion() {
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return version;
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}
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@Override
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public boolean isConnected() {
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return mCom != null && mCom.isDeviceConnected();
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}
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}
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