gistfile1.c

void getAccelerometerData(int16_t * result) {
  //int regAddress = 0x32;    //first axis-acceleration-data register on the ADXL345
  int regAddress = 0x30;	// One before the first, to see if we were just off by two bytes
  
  byte buff[A_TO_READ];
  
  readFrom(ACC, regAddress, A_TO_READ, buff); //read the acceleration data from the ADXL345
  
  //each axis reading comes in 10 bit resolution, ie 2 bytes.  Least Significat Byte first!!
  //thus we are converting both bytes in to one int
  result[0] = (((int)buff[1]) << 8) | buff[0];   
  result[1] = (((int)buff[3])<< 8) | buff[2];
  result[2] = (((int)buff[5]) << 8) | buff[4];
  result[3] = (((int)buff[6]) << 8) | buff[7];
}