author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 02 Feb 2010 01:57:15 +0200 | |
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/* |
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* Copyright (c) 2009 Nokia Corporation and/or its subsidiary(-ies). |
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* All rights reserved. |
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* This component and the accompanying materials are made available |
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* under the terms of "Eclipse Public License v1.0" |
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* which accompanies this distribution, and is available |
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* at the URL "http://www.eclipse.org/legal/epl-v10.html". |
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* |
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* Initial Contributors: |
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* Nokia Corporation - initial contribution. |
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* |
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* Contributors: |
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* |
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* Description: |
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* This file contains headers of SerialComm communication channel plugin objects. |
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* These classes are SerialComm, SerialCommPlugin and SerialCommIoThread classes. |
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*/ |
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#ifndef SERIALCOMMPLUGIN_H |
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#define SERIALCOMMPLUGIN_H |
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#pragma warning ( disable : 4786 ) |
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#include <iostream> |
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#include <process.h> |
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#include <string> |
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#include <map> |
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#include <comdef.h> |
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#include "common.h" |
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#include "plugin.h" |
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#include "safequeue.h" |
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#include "thread.h" |
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using namespace std; |
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#define SERIAL_INI_FILE_NAME "serialplugin.ini" |
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#define SERIAL_INI_INIT_PARAM "INIT_STRING" |
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#define PARAM_SWITCH_INIT_PARAM "-INIT_STRING" |
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#define SERIAL_INI_COMPORT_PARAM "COMPORT" |
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#define PARAM_SWITCH_COMPORT_PARAM "-COMPORT" |
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#define SERIAL_INI_COMPORT_TIMEOUT "TIMEOUT" |
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#define PARAM_SWITCH_COMPORT_TIMEOUT "-TIMEOUT" |
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#define SERIAL_INI_USE_HW_FLOW_CONTROL "HW_FLOWCONTROL" |
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#define PARAM_SWITCH_USE_HW_FLOW_CONTROL "-HW_FLOWCONTROL" |
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#define SERIAL_INI_SEND_SLEEP_PAUSE "SEND_PAUSE" |
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#define PARAM_SWITCH_SEND_SLEEP_PAUSE "-SEND_PAUSE" |
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#define SERIAL_INI_SEND_SIZE "SEND_SIZE" |
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#define PARAM_SWITCH_SEND_SIZE "-SEND_SIZE" |
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#define SERIAL_DEFAULT_INIT_STRING "115200,n,8,1" |
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#define SERIAL_DEFAULT_COMPORT "COM2" |
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const DWORD g_SerialCommDefaultTimeout = 40000; //ms |
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const DWORD g_SerialPluginTimeout = 10000; //not used |
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const long g_SerialCommDefaultSendPause = 0; |
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// Maximum time to wait |
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extern long g_MaximumShutdownWaitTime; |
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//********************************************************************************** |
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// Class SerialComm |
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// |
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// This class implements the actual serial communication |
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//********************************************************************************** |
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class SerialComm |
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{ |
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public: |
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SerialComm(); |
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~SerialComm(); |
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/* |
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* This method opens a communication device that uses serial communication and |
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* configures it according initialization parameters |
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*/ |
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WORD Open( const string& commPort, const string& initParameters, long timeout, |
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bool hwFlowControl, long sendPause, long sendMaxSize); |
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DWORD Close(); |
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/* |
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* This method is used to send Data object using serial communication |
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*/ |
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DWORD Send(const Data& data_in); |
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/* |
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* This method reads all available data from communication media |
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* and returns it in the Data object given as parameter |
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*/ |
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DWORD Receive(Data* data_out); |
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/* |
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* This method returns number of bytes available in incoming queue or |
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* -1 if communication error has occurred |
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*/ |
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LONG GetRxBytesAvailable(); |
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private: |
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//handle to communication resource |
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HANDLE m_Com; |
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bool m_Open; |
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long m_SendPause; |
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long m_SendMaxSize; |
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}; |
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|
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//********************************************************************************** |
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// Class SerialCommIoThread |
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// |
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// This thread is used to send data from outgoing queue to serial port |
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// and read bytes from serial port and push it to incoming queue |
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//********************************************************************************** |
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|
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class SerialCommIoThread : public Thread<SerialCommIoThread> |
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{ |
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public: |
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SerialCommIoThread(SafeQueue<Data*>* in, SafeQueue<Data*>* out, |
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const string& init, const string& commPort, long timeout, |
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bool hwFlowControl, long sendPause, long sendMaxSize); |
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/* |
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* Main execution loop which is used to send Data from outgoing queue to serial port |
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* and read bytes from serial port, encapsulate it to Data objects and push them to incoming queue |
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*/ |
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void Run(); |
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void Stop(); |
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void SetTimeout(long timeout); |
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long GetTimeout() const; |
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Event GetOpenedEvent(); |
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private: |
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//incoming queue |
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SafeQueue<Data*>* m_InQueue; |
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//outgoing queue |
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SafeQueue<Data*>* m_OutQueue; |
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Event m_OpenedEvent; |
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bool m_Running; |
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long m_PropertySerialCommTimeout; |
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const string& m_InitString; |
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const string& m_CommPort; |
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long m_ProperySerialSendPause; |
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bool m_PropertySerialHwFlowControl; |
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long m_PropertySerialMaxSendSize; |
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}; |
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|
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//********************************************************************************** |
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// Class SerialCommPlugin |
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// |
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// This class implements a CommChannelPlugin used in serial communication with device |
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//********************************************************************************** |
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|
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class SerialCommPlugin : public CommChannelPlugin |
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{ |
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public: |
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/* |
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* This method initializes SerialCommPlugin and starts SerialCommPluginIoThread |
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*/ |
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DWORD Init(); |
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/* |
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* This method is used to: |
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* -push given data to outgoing queue |
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* -wait for data to become available in incoming queue |
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* -pop the first Data object from queue and store it to the Data object given as parameter |
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*/ |
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DWORD SendReceive(Data* data_in, Data** data_out, long timeout = g_SerialPluginTimeout); |
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/* |
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* This method pushes the given Data object(of type Data::EData) to outgoing queue |
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*/ |
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DWORD Send(Data* data_in, long timeout = g_SerialPluginTimeout); |
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/* |
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* This method is used to pop the first data object from incoming queue and store it to data object given as parameter |
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*/ |
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DWORD Receive(Data** data_out, long timeout = g_SerialPluginTimeout); |
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/* |
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* This method is used to wait for data to become available in incoming queue |
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* and then pop the first Data object from the queue and and store it to Data object given as parameter. |
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*/ |
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DWORD ReceiveWait(Data** data_out, long timeout = g_SerialPluginTimeout); |
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/* |
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* This method checks if data is available on incoming queue |
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*/ |
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bool IsDataAvailable(); |
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DWORD Open(); |
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/* |
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* This method stops SerialCommIoThread and waits for it to be in signaled state |
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*/ |
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DWORD Close(); |
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SerialCommPlugin(const CommChannelPluginObserver* observer = NULL); |
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~SerialCommPlugin(); |
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private: |
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void CheckProperties(map<string, string>& props); |
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private: |
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//outgoing queue |
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SafeQueue<Data*> m_TxQueue; |
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//incoming queue |
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SafeQueue<Data*> m_RxQueue; |
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SerialCommIoThread* m_IoThread; |
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//map that properties are read to from ini file |
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map<string, string> m_SerialCommPluginProperties; |
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long m_PropertySerialCommTimeout; |
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string m_PropertySerialCommInitString; |
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string m_PropertySerialCommPort; |
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long m_ProperySerialSendPause; |
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bool m_PropertySerialHwFlowControl; |
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long m_PropertySerialMaxSendSize; |
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}; |
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|
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#endif |
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|
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// End of the file |