author | andy simpson <andrews@symbian.org> |
Tue, 12 Oct 2010 17:00:43 +0100 | |
branch | RCL_3 |
changeset 11 | a4ea38e653f9 |
parent 0 | 5de814552237 |
permissions | -rw-r--r-- |
0
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/* |
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* Copyright (c) 2008-2009 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: |
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* naviengine_assp\naviengine.cpp |
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* |
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*/ |
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#include <naviengine_priv.h> |
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#include "watchdog.h" |
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const TInt KWatchdogTimeoutSecs = 5; // the period, in seconds, that the watchdog timer will expire |
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// |
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// Pat the watchdog to prevent the board from resetting |
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// |
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void TNaviEngineWatchdog::WatchdogTimer(TAny* aPtr) |
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{ |
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__KTRACE_OPT(KHARDWARE, Kern::Printf("watchdogTimer expired")); |
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//Kern::Printf("watchdogTimer expired"); |
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TNaviEngineWatchdog *pDog = (TNaviEngineWatchdog *) aPtr; |
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// Pat the Dog now to give us the full period to respond with the timer |
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AsspRegister::Write32(KHwWatchdog_WDTINT, 1); |
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// Now queue the timer again so that we can pat it next time around |
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pDog->iWatchdogTimer.Again(NKern::TimerTicks(pDog->iWatchdogTimerPeriodMs)); |
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} |
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// |
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// Constructor |
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// |
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// We only really need the constructor to create the timer instance. |
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// |
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TNaviEngineWatchdog::TNaviEngineWatchdog() : |
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iWatchdogTimer(WatchdogTimer,this) |
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{ |
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} |
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// Destructor should never be called |
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TNaviEngineWatchdog::~TNaviEngineWatchdog() |
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{ |
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__crash(); |
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} |
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/** |
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Perform hardware-dependent initialisation |
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Called by platform independent layer |
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*/ |
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TInt TNaviEngineWatchdog::Create() |
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{ |
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__KTRACE_OPT(KEXTENSION,Kern::Printf("TNaviEngineWatchdog::Create")); |
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//Kern::Printf("TNaviEngineWatchdog::Create"); |
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SetTimer(KWatchdogTimeoutSecs); |
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return KErrNone; |
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} |
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// |
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// Enable/disable the external watchdog timer (eWDT). |
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// |
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void TNaviEngineWatchdog::SetTimer(TUint aTimeoutInSeconds) |
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{ |
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__KTRACE_OPT(KHARDWARE, Kern::Printf(">TNaviEngine::SetWatchdogTimer timeout=%d seconds", aTimeoutInSeconds)); |
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//Kern::Printf(">TNaviEngine::SetWatchdogTimer timeout=%d seconds", aTimeoutInSeconds); |
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// Disable eWDT |
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AsspRegister::Write32(KHwWatchdog_WDTCNT, 0); |
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// If only disabling then we're done |
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if (aTimeoutInSeconds > 0) |
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{ |
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// Set the WTD period to something very near the required number |
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// of seconds (this assumes a 66.666MHz clock) |
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AsspRegister::Write32(KHwWatchdog_WDTSET, (aTimeoutInSeconds*63)<<20); |
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AsspRegister::Write32(KHwWatchdog_WDTTIM, 0); |
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// Enable eWDT - start counting |
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AsspRegister::Write32(KHwWatchdog_WDTCNT, 1); |
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// Pat the Dog now to give us the full period to respond with the timer |
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AsspRegister::Write32(KHwWatchdog_WDTINT, 1); |
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// We have to decide how often to pat the dog, in seconds. |
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// The board will flag a warning after aTimeoutInSeconds, and reset after a further aTimeoutInSeconds. |
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// So we have to fire the watchdog at least every aTimeoutInSeconds to prevent the warning |
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// I've decided that we'll fire 500ms before the alarm to be sure we've patted the dog in time |
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__KTRACE_OPT(KHARDWARE, Kern::Printf("TNaviEngine::SetWatchdogTimer kicking off a timer...")); |
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//Kern::Printf("TNaviEngine::SetWatchdogTimer kicking off a timer..."); |
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iWatchdogTimerPeriodMs = ((aTimeoutInSeconds * 1000) - 500); |
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iWatchdogTimer.OneShot(NKern::TimerTicks(iWatchdogTimerPeriodMs)); |
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} |
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} |
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DECLARE_STANDARD_EXTENSION() |
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{ |
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__KTRACE_OPT(KEXTENSION,Kern::Printf("Watchdog: Starting timer service")); |
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//Kern::Printf("Watchdog: Starting timer service"); |
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// create the watchdog handler |
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TInt r=KErrNoMemory; |
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TNaviEngineWatchdog* pH=new TNaviEngineWatchdog; |
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Ryan Harkin <ryan.harkin@nokia.com>
parents:
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if (pH) |
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Ryan Harkin <ryan.harkin@nokia.com>
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{ |
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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r=pH->Create(); |
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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} |
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Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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|
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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__KTRACE_OPT(KEXTENSION,Kern::Printf("Watchdog: Returns %d",r)); |
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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//Kern::Printf("Watchdog: Returns %d",r); |
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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return r; |
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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} |
5de814552237
Initial contribution supporting NaviEngine 1
Ryan Harkin <ryan.harkin@nokia.com>
parents:
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136 |