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// // Copyright (c) 2002-2009 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: Location Based Services sample application // // // Include Files #include "Location.h" #include <e32base.h> #include <e32std.h> #include <e32cons.h> // Console // Constants _LIT(KTextConsoleTitle, "Console"); _LIT(KTextFailed, " failed, leave code = %d"); _LIT(KTextPressAnyKey, " [press any key]\n"); // Global Variables LOCAL_D CConsoleBase* console; // write all messages to this #include <lbs.h> #include <lbscommon.h> #include <LbsErrors.h> #include <LbsSatellite.h> RPositionServer server; RPositioner positioner; TInt GetModuleIdsL(RArray<TPositionModuleId>& aModuleIds, TPositionModuleInfo::TTechnologyType aType, TPositionModuleInfo::TCapabilities aCaps) { TUint numModules; TPositionModuleId modId; TPositionModuleInfo modInfo; TPositionModuleStatus modStatus; aModuleIds.Reset(); // 2. Get the number of modules installed User::LeaveIfError(server.GetNumModules(numModules)); // 3. Iterate over the modules to get information about each module // 4. Get the availability of a module // 5. Get information about the module technology, quality etc. for (TUint i=0 ; i < numModules ; i++) { User::LeaveIfError(server.GetModuleInfoByIndex(i, modInfo)); console->Printf(_L("Found modId = %X\n"),modInfo.ModuleId().iUid); /* Check module technology type and availability */ TBool modAvailable = modInfo.IsAvailable(); TPositionModuleInfo::TTechnologyType modType = modInfo.TechnologyType(); if ( modAvailable && (modType == aType) ) { /* Check module capabilities In this example does the module supply speed information? */ TPositionModuleInfo::TCapabilities caps = modInfo.Capabilities(); if (caps & aCaps == aCaps) { // Check module position quality TPositionQuality quality; modInfo.GetPositionQuality(quality); // In this example, check for horizontal accuracy better than 10 metres TReal horzAccuracy = quality.HorizontalAccuracy(); if ( !Math::IsNaN(horzAccuracy) && horzAccuracy < 1000 ) { // This module has all the required characteristics! modId = modInfo.ModuleId(); aModuleIds.AppendL(modId); } } } } // 6. Close the server session //CleanupStack::PopAndDestroy(&server); return aModuleIds.Count(); } void SetCriteriaL(TPositionCriteria& criteria) { // Define module selection criteria TPositionQuality quality; //TPositionSelectionOrder order; // Set required capabilities - want altitude information... criteria.AddRequiredCapabilities(TPositionModuleInfo::ECapabilityHorizontal); // Set quality - want horizontal position within 500m quality.SetHorizontalAccuracy(1000); // Set ordering - make vertical accuracy a high priority //User::LeaveIfError(order.SetOrderVerticalAccuracy(TPositionSelectionOrder::EOrderHigh)); criteria.SetRequiredQuality(quality); //criteria.SetSelectionOrder(order); } void GetModuleStateL(TPositionModuleId& modId) { TPositionModuleStatus modStatus; // Get module status User::LeaveIfError(server.GetModuleStatus(modStatus, modId)); // Use the status TPositionModuleStatus::TDeviceStatus deviceStatus = modStatus.DeviceStatus(); TPositionModuleStatus::TDataQualityStatus qualityStatus = modStatus.DataQualityStatus(); console->Printf(_L("ModuleId = {0x%X} deviceStatus = %d, qualityStatus = %d\n"),modId.iUid,(TInt)deviceStatus,(TInt)qualityStatus); // Can check the status of the module device - for example check for // device error if (deviceStatus == TPositionModuleStatus::EDeviceError) { // Device error for this module console->Printf(_L("Device Error\n")); return; } // Can check the data quality for the module - for example check for loss of data quality if (qualityStatus == TPositionModuleStatus::EDataQualityLoss) { // Loss of quality for this module console->Printf(_L("Loss Of Quality\n")); } } void GetDegreesString(const TReal64& aDegrees, TBuf<16>& aDegreesString) { const TReal KSecondsInMinute = 60.0; const TInt KNumWidth = 3; // Degrees sign delimeter used in formatting methods _LIT(KDelimDegree,"\xb0"); // "�" symbol // Dot delimeter used in formatting methods _LIT(KDelimDot,"\x2e"); // "." symbol // Plus sign delimeter used in formatting methods _LIT(KDelimPlus,"\x2b"); // "+" symbol // Minus sign delimeter used in formatting methods _LIT(KDelimMinus,"\x2d"); // "-" symbol // Quotation sign delimeter used in formatting methods _LIT(KDelimQuot,"\x22"); // "\"" symbol // Apostrophe sign delimeter used in formatting methods _LIT(KApostrophe,"\x27"); // "'" symbol // Not-a-number string _LIT(KNan,"NaN"); TReal realTmp = 0.0; // Check if aDegree is a proper number and exit otherwise if ( Math::IsNaN(aDegrees) ) { aDegreesString = KNan; return; } // Integer part of the degrees TInt intDegrees = 0; if ( Math::Int(realTmp,aDegrees) == KErrNone ) intDegrees = (TInt)realTmp; // Positive float of the degrees TReal64 realDegrees = aDegrees; // Convert to positive values if ( intDegrees < 0 ) { intDegrees = -intDegrees; realDegrees = -realDegrees; } // Minutes TReal64 realMinutes = 0; if ( Math::Frac(realMinutes,realDegrees) != KErrNone ) { realMinutes = (realDegrees - intDegrees) * KSecondsInMinute; } else { realMinutes *= KSecondsInMinute; } // Integer part of the minutes TInt intMinutes = 0; if ( Math::Int(realTmp,realMinutes) == KErrNone ) intMinutes = (TInt)realTmp; // Seconds TReal64 realSeconds = 0; if ( Math::Frac(realSeconds,realMinutes) != KErrNone ) { realSeconds = (realMinutes - intMinutes) * KSecondsInMinute; } else { realSeconds *= KSecondsInMinute; } TInt intSeconds = 0; if ( Math::Int(realTmp,realSeconds) == KErrNone ) intSeconds = (TInt)realTmp; // Check the sign of the result if ( aDegrees >= 0 ) { aDegreesString.Append(KDelimPlus); } else { aDegreesString.Append(KDelimMinus); } // Add the degrees TInt64 value = intDegrees; aDegreesString.AppendNum(value); // Add the separator aDegreesString.Append(KDelimDegree); // Add the minutes value = intMinutes; aDegreesString.AppendNum(value); // Add the separator aDegreesString.Append(KApostrophe); // Add the seconds value = intSeconds; aDegreesString.AppendNum(value); // Add the separator aDegreesString.Append(KDelimQuot); // Add the separator aDegreesString.Append(KDelimDot); // Get six last digits realSeconds -= intSeconds; realSeconds *= 1000; // Add the seconds aDegreesString.AppendNumFixedWidth(static_cast<TInt>(realSeconds), EDecimal, KNumWidth); } TInt GetPositionInfoL(TPosition& aPos) { RPositionServer serverEx; RPositioner positionerEx; // Create a session with the location server User::Leave