add interface

src/pages/page/device/SAKDevice.cc

@@ -26,3 +26,28 @@ void SAKDevice::wakeMe()
 {
     threadWaitCondition.wakeAll();
 }
+
+void SAKDevice::writeBytes(QByteArray bytes)
+{
+    waitingForWritingBytesListMutex.lock();
+    if (bytes.length()){
+        waitingForWritingBytesList.append(bytes);
+    }else{
+        waitingForWritingBytesList.append(QByteArray("empty"));
+    }
+    waitingForWritingBytesListMutex.unlock();
+}
+
+QByteArray SAKDevice::takeWaitingForWrittingBytes()
+{
+    QByteArray bytes;
+    waitingForWritingBytesListMutex.lock();
+    if (waitingForWritingBytesList.length()){
+        bytes = waitingForWritingBytesList.takeFirst();
+    }else{
+        bytes = QByteArray();
+    }
+    waitingForWritingBytesListMutex.unlock();
+
+    return bytes;
+}

src/pages/page/device/SAKDevice.hh

@@ -38,9 +38,18 @@ public:
      * @param bytes 待发送数据
      */
     void writeBytes(QByteArray bytes);
+
+    /**
+     * @brief takeWaitingForWrittingBytes 提取待发送数据,无数据则返回空数据
+     * @return 一帧待发送数据
+     */
+    QByteArray takeWaitingForWrittingBytes();
 protected:
     QMutex threadMutex;
     QWaitCondition threadWaitCondition;
+private:
+    QMutex waitingForWritingBytesListMutex;
+    QList<QByteArray> waitingForWritingBytesList;
 signals:
     /// @brief 数据发送成功后触发该信号
     void bytesWritten(QByteArray bytes);