author | Dremov Kirill (Nokia-D-MSW/Tampere) <kirill.dremov@nokia.com> |
Tue, 31 Aug 2010 17:02:06 +0300 | |
branch | RCL_3 |
changeset 42 | a828660c511c |
permissions | -rw-r--r-- |
42
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/* |
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* Copyright (c) 2007-2008 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: spia interface declaration |
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* |
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*/ |
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|
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/* |
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* %version: 7 % |
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*/ |
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|
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#ifndef WLANSPIA_H |
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#define WLANSPIA_H |
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|
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class MWlanSpiaClient; |
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class MWlanOsaExt; |
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|
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#include <wlanspiatypes.h> |
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|
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/** |
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* spia interface declaration |
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* |
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* |
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* @lib wlanpdd.pdd |
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* @since S60 v3.2 |
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*/ |
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class WlanSpia |
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{ |
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|
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public: |
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|
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typedef TInt TRequestId; |
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|
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/* SPI transfer clock speed. The closest one is selected if the |
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* exact clock frequency cannot be achieved. |
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* The closest is always less than the requested frequency.*/ |
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enum TClockSpeed |
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{ |
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EClk1_5MHz = 0, |
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EClk3MHz, |
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EClk6MHz, |
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EClk12MHz, |
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EClk24MHz, |
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EClk48MHz, |
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EClk96MHz |
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}; |
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|
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/* SPI clock modes used for transfer. |
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Next picture shows what different configuration values means. |
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|
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,--> Sampling |
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| ,> Shift out |
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| | |
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high/rising ______|¯|_|¯|_|¯|_ (mode 0) |
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|
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high/falling ____|¯|_|¯|_|¯|_|¯ (mode 1) |
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|
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low/falling ¯¯¯¯¯¯|_|¯|_|¯|_|¯ (mode 2) |
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|
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low/rising ¯¯¯¯|_|¯|_|¯|_|¯|_ (mode 3) |
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*/ |
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enum TClockMode |
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{ |
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/* SPI clock active high, sampling occurs on the rising edge */ |
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EPolarityHighRisingEdge = 0, |
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/* SPI clock active high, sampling occurs on the falling edge */ |
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EPolarityHighFallingEdge, |
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/* SPI clock active low, sampling occurs on the falling edge */ |
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EPolarityLowFallingEdge, |
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/* SPI clock active low, sampling occurs on the rising edge */ |
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EPolarityLowRisingEdge |
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}; |
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|
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/* SPI slave select signal polarity used for transfer */ |
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enum TSsPolarity |
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{ |
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/** SS is held \e high during the active state */ |
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ESsPolarityHigh = 0, |
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/** SS is held \e low during the active state */ |
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ESsPolarityLow |
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}; |
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|
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/* SPI read mode, used when reading is done */ |
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enum TReadMode |
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{ |
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/* normal read from SPI slave device |
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* (i.e no write involved for this call) */ |
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ENormalRead = 0, |
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/* write buffer is written completely |
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* before the read operation is done */ |
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EWriteB4Read, |
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/* full duplex mode |
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* Tx and Rx are done at same time |
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* NOTE: Tx and Rx buffers must not overlap and must be of equal size */ |
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ECombinedWriteRead |
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}; |
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107 |
|
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struct TConfig |
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{ |
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/* SPI clock mode */ |
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TClockMode iSpiaClockMode; |
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/* SPI slave select signal polarity */ |
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TSsPolarity iSpiaSsPolarity; |
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/* number of bytes per frame in tx */ |
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TUint8 iTxBytesPerFrame; |
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/* number of bytes per frame in rx */ |
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TUint8 iRxBytsPerFrame; |
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}; |
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119 |
|
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/* SPI slave select mode */ |
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enum TSsMode |
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{ |
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/* slave select is active during the whole SPI request operation */ |
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EForcedActive = 0, |
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/* slave select is toggled on SPI frame basis during the whole SPI request */ |
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EFrameControlled |
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}; |
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128 |
|
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struct TCapabilities |
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{ |
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/* bit 0 - memory config support: |
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* bit clear non cached memory supported, bit set cached memory supported |
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* default value is cleared |
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* bit 1 - ENormalRead support in TReadMode: bit set when supported |
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* bit 2 - EWriteB4Read support in TReadMode: bit set when supported |
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* bit 3 - ECombinedWriteRead support in TReadMode: bit set when supported |
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* bit 4 - EForcedActive support in TSsMode: bit set when supported |
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* bit 5 - EFrameControlled in TSsMode: bit set when supported */ |
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TUint32 iCapability; |
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/* Length of the memory cache line in bytes (needed for buffer alignment) */ |
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TUint32 iCacheLineLength; |
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/* DMA threshold for SPI operations */ |
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TUint32 iDMAThreshold; |
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}; |
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|
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/* SPIA request structure */ |
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struct TRequest |
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{ |
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/* tx buffer. Buffer length must be multiple of sizeof(TInt) */ |
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const TUint8* iTxBuffer; |
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/* amount of data to transmit in the tx buffer in bytes */ |
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TUint iTxBufferSize; |
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/* rx buffer. Buffer length must be multiple of sizeof(TInt) */ |
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TUint8* iRxBuffer; |
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/* amount of data to read to the rx buffer in bytes */ |
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TUint iRxBufferSize; |
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/* read operation type */ |
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TReadMode iReadMode; |
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/* complete callback method client to be called after |
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* the request has completed */ |
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MWlanSpiaClient* iRequestClient; |
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/* unique request ID passed back to client as |
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* is in SPIA request callback */ |
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TRequestId iRequestId; |
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/* SPI transfer clock speed. |
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* The closest one is selected if exact clock frequency |
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* can not be achieved. The closest is always less |
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* than the requested frequency. */ |
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TClockSpeed iSpiaClockSpeed; |
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/* last request or not for a while, a hint for power management |
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* ETrue upon last request, any other not */ |
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TBool iLastRequest; |
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/* SPI slave select mode used */ |
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TSsMode iSsMode; |
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}; |
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|
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/** |
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* Destructor. |
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* |
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* @since S60 v3.2 |
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*/ |
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virtual ~WlanSpia() {}; |
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|
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/** |
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* Create spia layer object |
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* |
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* @since S60 v3.2 |
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* @param aOsaExt osa extension object |
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* @return spia layer object, NULL upon failure |
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* @deprecated Create() and Attach( MWlanOsaExt& ) should be used instead |
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*/ |
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static WlanSpia* Create( MWlanOsaExt& aOsaExt ); |
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|
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/** |
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* Create spia layer object |
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* |
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* @since S60 v3.2 |
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* @return spia layer object, NULL upon failure |
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*/ |
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static WlanSpia* Create(); |
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|
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/** |
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* Attach the OSA extension object |
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* |
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* @since S60 v3.2 |
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* @param aOsaExt osa extension object |
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*/ |
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void Attach( MWlanOsaExt& aOsaExt ); |
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|
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/** |
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* Destroy spia layer object |
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* |
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* @since S60 v3.2 |
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* @param aWlanSpia spia layer object |
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*/ |
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static void Destroy( WlanSpia* aWlanSpia ); |
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/** |
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* Extract module capabilities |
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* |
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* @since S60 v3.2 |
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* @param aCapabilities capabilities of the module |
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*/ |
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virtual void Capability( TCapabilities& aCapabilities ) { aCapabilities.iCapability = 0; } |
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/** |
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* Configures the SPI HW block |
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* |
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* @since S60 v3.2 |
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* @param aConfig SPI configuration data |
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*/ |
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virtual void Configure( const TConfig& aConfig ) = 0; |
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/** |
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* Issues SPIA request |
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* |
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* NOTE: the request must remain valid until operation completes |
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* (either synchronously or asynchronously by completion callback). |
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* It is guaranteed by the system that no SPIA request complete callback |
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* gets called during this call |
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* |
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* @since S60 v3.2 |
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* @param aRequest request to execute |
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* @return status of the operation |
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* ESuccess - request was accepted for asynchronous |
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* excecution and will complete at a later time. |
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* Request completion is notified by |
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* SPIA request complete callback. |
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* SPIA user is allowed to issue additional |
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* requests |
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* |
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* EFailure - request was not accepted as it failed due |
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* unspecified reason. |
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* SPIA request complete callback is not called |
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* |
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* ESuccessXfer - request was accepted and completed |
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* synchronously inside the SPIA. |
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* SPIA request complete callback is not called. |
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* SPIA user is allowed to issue additional |
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* requests |
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* |
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* EPending - request was accepted for asynchronous |
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* excecution and will complete at later time. |
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* Request completion is notified by |
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* SPIA request complete callback. |
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* SPIA user is NOT allowed to issue additional |
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* requests until SPIA request complete callback is called |
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*/ |
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virtual SPIA::TStatus Request( const TRequest& aRequest ) = 0; |
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|
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/** |
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* Cancels a pending SPIA request. Either succeeds or has no effect |
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* |
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* NOTE: it is guaranteed by the system that no SPIA request complete callback |
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* gets called during this call |
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* |
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* @since S60 v3.2 |
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* @param aRequestId request ID that identifies the SPIA request to cancel |
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* @return status of the operation |
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* ESuccess - operation success. |
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* SPIA request was cancelled and no SPIA request |
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* complete callback gets executed for the request |
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* that was cancelled |
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* |
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* |
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* EFailure - the request is in use and can not be cancelled. |
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*/ |
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virtual SPIA::TStatus Cancel( TRequestId aRequestId ) = 0; |
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|
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protected: |
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|
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/** |
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* Constructor |
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* |
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* @since S60 v3.2 |
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*/ |
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explicit WlanSpia() : iOsaExt( NULL ) {} |
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|
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/** |
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* Constructor |
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* |
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* @since S60 v3.2 |
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* @param aOsaExt osa extension object |
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*/ |
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explicit WlanSpia( MWlanOsaExt& aOsaExt ) : iOsaExt( &aOsaExt ) {} |
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|
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/** |
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* Extract osa extension |
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* |
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* @since S60 v3.2 |
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* @return osa extension |
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*/ |
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inline MWlanOsaExt& OsaExtCb(); |
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|
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private: |
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/** |
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* osa extension |
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*/ |
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MWlanOsaExt* iOsaExt; |
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}; |
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#include <wlanspia.inl> |
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#endif // WLANSPIA_H |