I made an equivalent tool in python that print real time data from ADXL345 accelerometer. https://github.com/mba7/SerialPort-RealTime-Data-Plotter
may be it will be helpful for someone

Just choose the serial com and speed and sent a serial data on the following format:
- 3 inputs, every input is a 2 bytes (Two's complement )
- 6 bytes seperated by a space
- the packet is a string terminated by '\n'
Could be easily adapted to change this format