#include <hwrmpower.h> 

 // A CHWRMPower instance can be created by using NewL() or NewLC() methods. 
 // Periodical measurements are required so callbacks are provided. Assume 
 // the calling object implements  both interfaces.
 CHWRMPower* power = CHWRMPower::NewL(this, this);

 // Get battery info.
 TRequestStatus& status;
 TBatteryConsumptionData batteryConsumptionData;
 power->GetBatteryInfo(status, batteryConsumptionData); 
 
 User::WaitForRequest(status);
 User::LeaveIfError(status.Int());
 
 // Start receiving periodical voltage measurements.
 TRequestStatus& statusStart;
 TIntervalMultiple intervalMultiple = EThreeTimesBaseTimeInterval;
 power->StartAverageVoltageReporting(statusStart, intervalMultiple);
  
 User::WaitForRequest(statusStart);
 User::LeaveIfError(statusStart.Int());
 
 // Measurements are being when the ProcessVoltageMeasurement() method 
 // of the MHWRMBatteryVoltageObserver interface is called.
  
 // Stop receiving measurements when done
 power->StopAverageVoltageReportingL(); 

 // To clean up, delete the created object:
 delete power;