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 NON GENUINE DEVICE FOUND! NON GENUINE DEVICE FOUND! 

avrdude: Version 6.0.1, compiled on Apr 15 2015 at 19:59:58

         Copyright (c) 2000-2005 Brian Dean, http://www.bdmicro.com/

         Copyright (c) 2007-2009 Joerg Wunsch

         System wide configuration file is "C:\Program Files (x86)\Arduino\hardware\tools\avr/etc/avrdude.conf"

         Using Port                    : COM6

         Using Programmer              : arduino

         Overriding Baud Rate          : 57600

avrdude: stk500_getsync() attempt 1 of 10: not in sync: resp=0x43

avrdude: stk500_getsync() attempt 2 of 10: not in sync: resp=0x45

avrdude: stk500_getsync() attempt 3 of 10: not in sync: resp=0x20

avrdude: stk500_getsync() attempt 4 of 10: not in sync: resp=0x46

avrdude: stk500_getsync() attempt 5 of 10: not in sync: resp=0x4f

avrdude: stk500_getsync() attempt 6 of 10: not in sync: resp=0x55

avrdude: stk500_getsync() attempt 7 of 10: not in sync: resp=0x4e

avrdude: stk500_getsync() attempt 8 of 10: not in sync: resp=0x44

avrdude: stk500_getsync() attempt 9 of 10: not in sync: resp=0x21

avrdude: stk500_getsync() attempt 10 of 10: not in sync: resp=0x20 

char *dtostrf(double val, signed char width, unsigned char prec, char *s)

Use this method to convert it to a C-Style string and then use sprintf, eg:

char str_temp[6];

/* 4 is mininum width, 2 is precision; float value is copied onto str_temp*/

dtostrf(temp, 4, 2, str_temp);

sprintf(temperature,"%s F", str_temp);

#include <avr/io.h>
#include <Wire.h>

#define I2C_ID  0x53 // ADXL-345

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Wire.begin();

  // adxl345 initialize
  // power setting
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x2d));
    Wire.write(byte(0x18));
  Wire.endTransmission();

  // range setting
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x31));
    Wire.write(byte(0x09));
  Wire.endTransmission();
}

void loop() {
  // put your main code here, to run repeatedly:
  char str[30];
  char data[6];
  unsigned char idx = 0;
  short acc_x;
  short acc_y;
  short acc_z;

  // data request
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x32));
  Wire.endTransmission();
  Wire.requestFrom(0x53, 6);

  idx = 0;
  while (Wire.available())
    data[idx++] = Wire.read();

  acc_x = (data[1] << 8) | data[0];
  acc_y = (data[3] << 8) | data[2];
  acc_z = (data[5] << 8) | data[4];

  sprintf(str,"x:%6d y:%6d z:%6d",acc_x, acc_y, acc_z);
  Serial.println(str);

  delay(100);
}

#include <avr/io.h>
#include <math.h>
#include <Wire.h>

#define I2C_ID  0x53 // ADXL-345

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Wire.begin();

  // adxl345 initialize
  // power setting
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x2d));
    Wire.write(byte(0x18));
  Wire.endTransmission();

  // range setting
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x31));
    Wire.write(byte(0x03));
  Wire.endTransmission();
}

void loop() {
  // put your main code here, to run repeatedly:
  char str[30];
  char data[6];
  unsigned char idx = 0;
  short acc_x;
  short acc_y;
  short acc_z;
  double deg_x;
  double deg_y;

  // data request
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x32));
  Wire.endTransmission();
  Wire.requestFrom(0x53, 6);

  idx = 0;
  while (Wire.available())
    data[idx++] = Wire.read();

  acc_x = (data[1] << 8) | data[0];
  acc_y = (data[3] << 8) | data[2];
  acc_z = (data[5] << 8) | data[4];

  if(acc_z == 0)
  {
    deg_x = 0.0;
    deg_y = 0.0;
  }
  else
  {
    deg_x = atan((double)acc_x / (double)acc_z) * 57.2957;
    deg_y = atan((double)acc_y / (double)acc_z) * 57.2957;
  }
  
  sprintf(str,"x:%6d y:%6d z:%6d",acc_x, acc_y, acc_z);
  Serial.println(str);
  
  sprintf(str,"x:%d y:%d",(short)deg_x, (short)deg_y);
  Serial.println(str);

  delay(100);
}

#include <avr/io.h>
#include <math.h>
#include <Wire.h>

#define I2C_ID  0x53 // ADXL-345

void setup() {
  // put your setup code here, to run once:
  Serial.begin(115200);
  Wire.begin();

  // adxl345 initialize
  // power setting
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x2d));
    Wire.write(byte(0x18));
  Wire.endTransmission();

  // range setting
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x31));
    Wire.write(byte(0x02));
  Wire.endTransmission();
}

void loop() {
  // put your main code here, to run repeatedly:
  char str[30];
  char str_x[15];
  char str_y[15];
  char data[6];
  unsigned char idx = 0;
  short acc_x;
  short acc_y;
  short acc_z;
  double deg_x;
  double deg_y;

  // data request
  Wire.beginTransmission(I2C_ID);
    Wire.write(byte(0x32));
  Wire.endTransmission();
  Wire.requestFrom(0x53, 6);

  idx = 0;
  while (Wire.available())
    data[idx++] = Wire.read();

  acc_x = (data[1] << 8) | data[0];
  acc_y = (data[3] << 8) | data[2];
  acc_z = (data[5] << 8) | data[4];

  if(acc_z == 0)
  {
    deg_x = 0.0;
    deg_y = 0.0;
  }
  else
  {
    deg_x = atan((double)acc_x / (double)acc_z) * 57.2957;
    deg_y = atan((double)acc_y / (double)acc_z) * 57.2957;
  }
  
  sprintf(str,"x:%6d y:%6d z:%6d",acc_x, acc_y, acc_z);
  Serial.println(str);

  dtostrf(deg_x, 4,2, str_x);
  dtostrf(deg_y, 4,2, str_y);
  sprintf(str,"x:%s y:%s",str_x, str_y);
  Serial.println(str);

  delay(100);
}