syncserialengine.cpp

实现在S60 SDK 3rd Device上的USB串口通信。

/*
 * ============================================================================
 *  Name     : CSyncSerialEngine from SyncSerialEngine.cpp
 *  Part of  : SyncSerial
 *  Created  : 23.02.2006 by ToBeReplacedByAuthor
 *  Implementation notes:
 *     Initial content was generated by Series 60 Application Wizard.
 *  Version  :
 *  Copyright: ToBeReplacedByCopyright
 * ============================================================================
 */
// INCLUDE FILES
#include "SyncSerialEngine.h"

_LIT(CSYMOD, "ECACM");
_LIT(KACMPort1, "ACM::1");

// ================= MEMBER FUNCTIONS =======================

// Two-phased constructor.
CSyncSerialEngine* CSyncSerialEngine::NewL()
	{
	CSyncSerialEngine* self = new (ELeave) CSyncSerialEngine;
	CleanupStack::PushL(self);
	self->ConstructL();
	CleanupStack::Pop();
	return self;
	}

CSyncSerialEngine::CSyncSerialEngine()
	{
	}

// Destructor
CSyncSerialEngine::~CSyncSerialEngine()
	{
	this->Close();
	if ( iCommServ )
		{
		delete iCommServ;
		iCommServ = NULL;
		}
	if ( iComm )
		{
		delete iComm;
		iComm = NULL;
		}
	}

TInt CSyncSerialEngine::Send(const TDesC8& aData)
	{
	TRequestStatus stat;
	iComm->Write(stat, aData);
	User::WaitForRequest(stat);
	return stat.Int();
	}

TInt CSyncSerialEngine::Recv(TDes8& aData)
	{
	TRequestStatus stat;
	iComm->ReadOneOrMore(stat, aData);
	User::WaitForRequest(stat);
	return stat.Int();
	}

// ---------------------------------------------------------
// CSyncSerialEngine::ConstructL(const TRect& aRect)
// EPOC two phased constructor
// ---------------------------------------------------------
//
void CSyncSerialEngine::ConstructL()
	{
	iCommServ = new (ELeave) RCommServ;
	iComm = new (ELeave) RComm;
	}

// New functions
void CSyncSerialEngine::InitializeL()
	{
	// RComm is a client to the RCommServ Comms server
	// Start this service before any connections are made.
	TInt ret = StartC32();
	if (ret != KErrNone && ret != KErrAlreadyExists)
		{
		User::Leave(ret);
		}
	// Connect to CommServer
	User::LeaveIfError(iCommServ->Connect());
	// Load CSY Module
	User::LeaveIfError(iCommServ->LoadCommModule(CSYMOD));
	}

void CSyncSerialEngine::OpenL()
	{
	TBuf16<KMaxPortName> portName;
	portName.Copy(KACMPort1);
	// Open the comm. port
	User::LeaveIfError(iComm->Open(*iCommServ, portName, ECommShared));
	}

void CSyncSerialEngine::ConfigurateL()
	{
	// Verify capabilities of the port and configure it
	TCommCaps portCaps;
	iComm->Caps(portCaps);
	if (((portCaps().iRate & EBps115200) == 0) | ((portCaps().iDataBits
			& KCapsData8) == 0) | ((portCaps().iStopBits & KCapsStop1) == 0)
			| ((portCaps().iParity & KCapsParityNone) == 0))
		{
		User::Leave(KErrNotSupported);
		}
	TCommConfig portCfg;
	iComm->Config(portCfg);
	portCfg().iRate = EBps115200;
	portCfg().iParity = EParityNone;
	portCfg().iDataBits = EData8;
	portCfg().iStopBits = EStop1;
	portCfg().iHandshake = 0;
	User::LeaveIfError(iComm->SetConfig(portCfg));

	// now turn on DTR and RTS, and set our buffer size
	iComm->SetSignals(KSignalDTR, 0);
	iComm->SetSignals(KSignalRTS, 0);
	TInt curlenth = iComm->ReceiveBufferLength();
	iComm->SetReceiveBufferLength(4096);
	}

void CSyncSerialEngine::Close()
	{
	if ( iComm )
		{
		iComm->Close();
		}
	if ( iCommServ )
		{
		iCommServ->Close();
		}
	}

void CSyncSerialEngine::InitSerial()
	{
	this->InitializeL();
	this->OpenL();
	this->ConfigurateL();
	}

void CSyncSerialEngine::CloseSerial()
	{
	this->Close();
	}

// End of File