ADXL345_I2C Help

[ProgrammerMike7]

Hello everyone! I have been trying to get the ADXL345 accelerometer working. I have it connected to the I2C spare outputs. Here is my code:

#include "WPILib.h"

class MyRobot : public IterativeRobot {
	ADXL345_I2C myAccel;
	DriverStationLCD *driverStation;
public:
	MyRobot():
		myAccel(4, ADXL345_I2C::kRange_2G)
	{
		driverStation = DriverStationLCD::GetInstance();
	}
	void TeleopInit() {
		GetWatchdog().SetEnabled(true);
		driverStation->Clear();		
	}
	void TeleopPeriodic() {
		GetWatchdog().Feed();
		
		char xAccelChar[100];
		char yAccelChar[100];

		sprintf(xAccelChar, "Accel X: %f", myAccel.GetAcceleration(ADXL345_I2C::kAxis_X));
		sprintf(yAccelChar, "Accel Y: %f", myAccel.GetAcceleration(ADXL345_I2C::kAxis_Y));
		
		driverStation->Clear();
		driverStation->PrintfLine(DriverStationLCD::kUser_Line1, xAccelChar);
		driverStation->PrintfLine(DriverStationLCD::kUser_Line2, yAccelChar);
		driverStation->UpdateLCD();
		
	}
};
START_ROBOT_CLASS(MyRobot);

When I run this program, the display on the driver station reads:
Accel X: 0.00000
Accel Y: 0.00000

No matter how much the accelerometer is moved around, these values do not change. Does anyone have any ideas as to what I can do to make the accelerometer work?