examples/SerialComms/ServerClientSide/IRPrinting/IRPrinting.cpp

// Copyright (c) 1997-2009 Nokia Corporation and/or its subsidiary(-ies).
// All rights reserved.
// This component and the accompanying materials are made available
// under the terms of "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:
//


#include <e32base.h>
#include <e32test.h>
#include <e32svr.h>
#include <c32comm.h>
#include "f32file.h"

#include "CommonFiles.h"

// Device driver names
#if defined (__WINS__)
_LIT(PDD_NAME,"ECDRV");
_LIT(LDD_NAME,"ECOMM");
#else
_LIT(PDD_NAME,"EUART1");
_LIT(LDD_NAME,"ECOMM");
#endif

_LIT8(DATA_STRING,"Symbian platform infra red printing\n\r");

LOCAL_C void InitL();

// Do the example 
LOCAL_C void doExampleL()
    {
        _LIT(KStatus0,"Connect to file server\n");
        _LIT(KStatus1,"Connect to comm server\n");
        _LIT(KStatus2,"Load IrCOMM.CSY\n");
        _LIT(KStatus3,"Open IrCOMM::0\n");
        _LIT(KStatus4,"Write to IrCOMM::0\n");
        _LIT(KStatus5,"Close IrCOMM::0\n");
        _LIT(KStatus6,"Close server connection\n");
        _LIT(KIrCOMM,"IrCOMM");
        _LIT(KIrCOMM0,"IrCOMM::0");

        const TTimeIntervalMicroSeconds32 KTimeOut(4000000);
        //time-out value

        console->Printf(KStatus0);
                                // force a link to the file server
                                // so that we're sure the loader 
                                // will be present

        RFs f;
        User::LeaveIfError(f.Connect());
        f.Close();
                                // InitLialisation

        InitL();
                                
        RCommServ server;

                                // Connect to the comm server
        console->Printf(KStatus1);
        User::LeaveIfError(server.Connect());

                                // Load the IrCOMM comm module
                                // C32 will automatically search \System\Libs
                                // on all drives for IrCOMM.CSY
        console->Printf(KStatus2);
        TInt ret=server.LoadCommModule(KIrCOMM);
        
        //test(ret==KErrNone);
        User::LeaveIfError(ret);
                
        RComm commPort;
                                // Open the IrCOMM port unit 0 (the only one supported)
                                // Open port in exclusive mode because we don't 
                                // have any access control code.
        console->Printf(KStatus3);
        ret=commPort.Open(server,KIrCOMM0,ECommExclusive);
        //test(ret==KErrNone);
        User::LeaveIfError(ret);

        TRequestStatus status;
                                // Write to the IrCOMM port - the first write 
                                // takes a long time as the IrDA connection is 
                                // set up in response to this request. Subsequent 
                                // writes to IrCOMM are very fast.
        console->Printf(KStatus4);
        commPort.Write(status,KTimeOut,DATA_STRING);
        User::WaitForRequest(status);

        //test(status.Int()==KErrNone);

                                // Close port
        console->Printf(KStatus5);
        commPort.Close();

        console->Printf(KStatus6);
        server.Close();
        }


LOCAL_C void InitL()
//
// InitLialisation code - loads the serial LDD and PDD
// starts the comm subsystem (for EPOC32 builds)
// On a full Symbian platform implementation, this code would not
// be required because higher level GUI components  
// automatically start the services.
//
        {
        // Load the physical device driver
        // The OS will automatically append .PDD and 
        // search /System/Libs on all drives.

        TInt r=User::LoadPhysicalDevice(PDD_NAME);
        if (r != KErrNone && r!= KErrAlreadyExists)
                User::Leave(r);
        //test(r==KErrNone || r==KErrAlreadyExists);
        // Similarly for the Logical device driver
        r=User::LoadLogicalDevice(LDD_NAME);
        if (r != KErrNone && r != KErrAlreadyExists)
                User::Leave(r);
        //test(r==KErrNone|| r==KErrAlreadyExists);

#if defined (__EPOC32__)
        // For EPOC builds we need to start the comms subsystem
        // This call actually starts the comms server process
        r=StartC32();
        if (r != KErrAlreadyExists)
                User::LeaveIfError(r);
#endif
        }

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