Using values from a MPU6050

I am currently building a human posture analyzing system and I am using an Arduino Uno and an MPU6050. I have code that allows me to obtain the x,y,z values but i now want to used those values.
when ether of the values exceed a set value of mine I want the on-board LED to come on, and then off again when the mpu6050 stabilizes again.
does anybody know on how to do this, Below is the code I am using.

#include “I2Cdev.h”

#include “MPU6050_6Axis_MotionApps20.h”

#include “Wire.h”

MPU6050 mpu;

// uncomment “OUTPUT_READABLE_EULER” if you want to see Euler angles
// (in degrees) calculated from the quaternions coming from the FIFO.
// Note that Euler angles suffer from gimbal lock (for more info, see

#define LED_PIN 13 // (Arduino is 13, Teensy is 11, Teensy++ is 6)
bool blinkState = false;

// MPU control/status vars
bool dmpReady = false; // set true if DMP init was successful
uint8_t mpuIntStatus; // holds actual interrupt status byte from MPU
uint8_t devStatus; // return status after each device operation (0 = success, !0 = error)
uint16_t packetSize; // expected DMP packet size (default is 42 bytes)
uint16_t fifoCount; // count of all bytes currently in FIFO
uint8_t fifoBuffer[64]; // FIFO storage buffer

// orientation/motion vars
Quaternion q; // [w, x, y, z] quaternion container
VectorInt16 aa; // [x, y, z] accel sensor measurements
VectorInt16 aaReal; // [x, y, z] gravity-free accel sensor measurements
VectorInt16 aaWorld; // [x, y, z] world-frame accel sensor measurements
VectorFloat gravity; // [x, y, z] gravity vector
float euler[3]; // [psi, theta, phi] Euler angle container
float ypr[3]; // [yaw, pitch, roll] yaw/pitch/roll container and gravity vector

// packet structure for InvenSense teapot demo
uint8_t teapotPacket[14] = { ‘$’, 0x02, 0,0, 0,0, 0,0, 0,0, 0x00, 0x00, ‘\r’, ‘\n’ };

// ================================================================
// ================================================================

volatile bool mpuInterrupt = false; // indicates whether MPU interrupt pin has gone high
void dmpDataReady() {
mpuInterrupt = true;

// ================================================================
// === INITIAL SETUP ===
// ================================================================

void setup() {
// join I2C bus (I2Cdev library doesn’t do this automatically)
TWBR = 24; // 400kHz I2C clock (200kHz if CPU is 8MHz)
Fastwire::setup(400, true);

while (!Serial); // wait for Leonardo enumeration, others continue immediately

// initialize device
Serial.println(F(“Initializing I2C devices…”));

// verify connection
Serial.println(F(“Testing device connections…”));
Serial.println(mpu.testConnection() ? F(“MPU6050 connection successful”) : F(“MPU6050 connection failed”));

// wait for ready
Serial.println(F("\nSend any character to begin MPU6050 readings: "));
while (Serial.available() &&; // empty buffer
while (!Serial.available()); // wait for data
while (Serial.available() &&; // empty buffer again

// load and configure the DMP
Serial.println(F(“Initializing DMP…”));
devStatus = mpu.dmpInitialize();

// supply your own gyro offsets here, scaled for min sensitivity
mpu.setZAccelOffset(1788); // 1688 factory default for my test chip

// make sure it worked (returns 0 if so)
if (devStatus == 0) {
// turn on the DMP, now that it’s ready
Serial.println(F(“Enabling DMP…”));

// enable Arduino interrupt detection
Serial.println(F(“Enabling interrupt detection (Arduino external interrupt 0)…”));
attachInterrupt(0, dmpDataReady, RISING);
mpuIntStatus = mpu.getIntStatus();

// set our DMP Ready flag so the main loop() function knows it’s okay to use it
Serial.println(F(“DMP ready! Waiting for first interrupt…”));
dmpReady = true;

// get expected DMP packet size for later comparison
packetSize = mpu.dmpGetFIFOPacketSize();
} else {
// 1 = initial memory load failed
// 2 = DMP configuration updates failed
// (if it’s going to break, usually the code will be 1)
Serial.print(F(“DMP Initialization failed (code “));

// configure LED for output

// ================================================================
// ================================================================

void loop() {
// if programming failed, don’t try to do anything
if (!dmpReady) return;

// wait for MPU interrupt or extra packet(s) available
while (!mpuInterrupt && fifoCount < packetSize) {


// reset interrupt flag and get INT_STATUS byte
mpuInterrupt = false;
mpuIntStatus = mpu.getIntStatus();

// get current FIFO count
fifoCount = mpu.getFIFOCount();

// check for overflow (this should never happen unless our code is too inefficient)
if ((mpuIntStatus & 0x10) || fifoCount == 1024) {
// reset so we can continue cleanly
Serial.println(F(“FIFO overflow!”));

// otherwise, check for DMP data ready interrupt (this should happen frequently)
} else if (mpuIntStatus & 0x02) {
// wait for correct available data length, should be a VERY short wait
while (fifoCount < packetSize) fifoCount = mpu.getFIFOCount();

// read a packet from FIFO
mpu.getFIFOBytes(fifoBuffer, packetSize);

// track FIFO count here in case there is > 1 packet available
// (this lets us immediately read more without waiting for an interrupt)
fifoCount -= packetSize;

// display Euler angles in degrees
mpu.dmpGetQuaternion(&q, fifoBuffer);
mpu.dmpGetEuler(euler, &q);
Serial.print(euler[0] * 180/M_PI);
Serial.print(euler[1] * 180/M_PI);
Serial.println(euler[2] * 180/M_PI);

// blink LED to indicate activity
blinkState = !blinkState;
digitalWrite(LED_PIN, blinkState);

Thank you