// Copyright (c) 1998-2009 Nokia Corporation and/or its subsidiary(-ies).

// All rights reserved.

// This component and the accompanying materials are made available

// under the terms of the License "Eclipse Public License v1.0"

// which accompanies this distribution, and is available

// at the URL "http://www.eclipse.org/legal/epl-v10.html".

//

// Initial Contributors:

// Nokia Corporation - initial contribution.

//

// Contributors:

//

// Description:

// e32test\misc\t_lbk.cpp

// 

//

#include <e32test.h>

#include <d32comm.h>

RTest test(_L("LoopBack"));

#define TEST(c)	((void)((c)||(test.Printf(_L("Failed at line %d\n"),__LINE__),test.Getch(),test(0),0)))

const TInt KBufferSize=4096;

_LIT(KLddName,"ECOMM");

_LIT(KPddName,"EUART");

TUint8 Buffer[2*KBufferSize];

void LoadCommDrivers()

	{

	test.Printf(_L("Load LDD\n"));

	TInt r=User::LoadLogicalDevice(KLddName);

	TEST(r==KErrNone || r==KErrAlreadyExists);

	TInt i;

	TInt n=0;

	for (i=-1; i<10; ++i)

		{

		TBuf<16> pddName=KPddName();

		if (i>=0)

			pddName.Append('0'+i);

		TInt r=User::LoadPhysicalDevice(pddName);

		if (r==KErrNone || r==KErrAlreadyExists)

			{

			++n;

			test.Printf(_L("%S found\n"),&pddName);

			}

		}

	TEST(n!=0);

	}

GLDEF_C TInt E32Main()

	{

	RThread().SetPriority(EPriorityAbsoluteForeground);

	test.SetLogged(EFalse);

	test.Title();

	TBuf<256> cmd;

	User::CommandLine(cmd);

	TInt port=0;

	if (cmd.Length()!=0)

		{

		TUint8 c=(TUint8)cmd[0];

		if (c>='0' && c<='9')

			{

			port=c-'0';

			}

		}

	TInt r=KErrNone;

	LoadCommDrivers();

	RBusDevComm comm;

	r=comm.Open(port);

	test(r==KErrNone);

	TCommConfig cfg;

	TCommConfigV01& c=cfg();

	comm.Config(cfg);

	c.iRate=EBps115200;

	c.iDataBits=EData8;

	c.iStopBits=EStop1;

	c.iParity=EParityNone;

	c.iHandshake=0;

	c.iFifo=EFifoEnable;

	c.iTerminatorCount=0;

	r=comm.SetConfig(cfg);

	test(r==KErrNone);

	TRequestStatus rxs, txs;

	TRequestStatus* pS=&txs;

	User::RequestComplete(pS,0);

	TInt pos=0;

	FOREVER

		{

		TPtr8 dptr(Buffer+pos,0,KBufferSize);

		comm.ReadOneOrMore(rxs,dptr);

		User::WaitForRequest(rxs);

		if (rxs!=KErrNone)

			test.Printf(_L("RX error %d\n"),rxs.Int());

		User::WaitForRequest(txs);

		if (txs!=KErrNone)

			test.Printf(_L("TX error %d\n"),txs.Int());

		comm.Write(txs,dptr);

		if (pos)

			pos=0;

		else

			pos=KBufferSize;

		}

	}