// Copyright (c) 1994-2009 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:

// omap3530/shared/monitor/monitor.cpp

// 

//

#include <monitor.h>

#include <assp/omap3530_assp/omap3530_assp_priv.h>

#include <assp/omap3530_assp/omap3530_uart.h>

#include <assp/omap3530_assp/omap3530_prcm.h>

void CrashDebugger::InitUart()

	{

	const Omap3530Uart::TUartNumber portNumber( Omap3530Assp::DebugPortNumber() );

	if( portNumber >= 0 )

		{

		Omap3530Uart::TUart uart( portNumber );

		// Ensure UART clocks are running

		Prcm::SetClockState( uart.PrcmInterfaceClk(),Prcm::EClkOn );

		Prcm::SetClockState( uart.PrcmFunctionClk(), Prcm::EClkOn );

		// Add new line and wait for uart to fihish any transmission (i.e. crash info from fifo)

		uart.Write('\r');

		uart.Write('\n');

		while(!uart.TxFifoEmpty());

		// We don't know what state the UART is in, so reinitialize it

		uart.Init();

		uart.DefineMode( Omap3530Uart::TUart::EUart );

		uart.SetBaud( Omap3530Uart::TUart::E115200 );

		uart.SetDataFormat( Omap3530Uart::TUart::E8Data, Omap3530Uart::TUart::E1Stop, Omap3530Uart::TUart::ENone );

		uart.Enable();

		}

	}

void CrashDebugger::UartOut(TUint aChar)

	{

	const Omap3530Uart::TUartNumber portNumber( Omap3530Assp::DebugPortNumber() );

	if( portNumber >= 0 )

		{

		Omap3530Uart::TUart uart( portNumber );

		TUint c=0;

		while ( !uart.RxFifoEmpty() )

			{ 

			if ( CheckPower() )

				{

				return;

				}

			c = uart.Read();

			if ( c == 19 )            // XOFF

				{

				FOREVER

					{

					while( uart.RxFifoEmpty() )

						{

						if ( CheckPower() )

							{

							return;

							}

						}

					c = uart.Read();

					if ( c == 17 )    // XON

						{

						break;

						}

					else if ( c == 3 )		// Ctrl C

						{

						Leave(KErrCancel);

						}

					}

				}

			else if ( c == 3 )		// Ctrl C

				{

				Leave(KErrCancel);

				}

			}

		while ( uart.TxFifoFull() )

			{

			CheckPower();

			}

		uart.Write( aChar );

		}

	}

TUint8 CrashDebugger::UartIn()

	{

	const Omap3530Uart::TUartNumber portNumber( Omap3530Assp::DebugPortNumber() );

	if( portNumber >= 0 )

		{

		Omap3530Uart::TUart uart( portNumber );

		while ( uart.RxFifoEmpty() )

			{

			if ( CheckPower() )

				{

				return 0x0d;

				}

			}

		return uart.Read();

		}

	return 0;

	}

TBool CrashDebugger::CheckPower()

	{

	//

	// Check if power supply is stable and return ETrue if not

	//

	return EFalse;	// EXAMPLE ONLY

	}