code: def getDataFromFIFO(self, bytesToRead):
          
          return self.i2c_io.readBlock(self.MPU6050_ADDRESS, self.MPU6050_RA_FIFO_R_W, bytesToRead)
docs: reads the specified number of bytes from the FIFO, should be called after a call to getFifoCount to ensure there
          is new data available (to avoid reading duplicate data).
          :param bytesToRead: the number of bytes to read.
          :return: the bytes read.