The purpose of this exercise is to send the value read by the accelerometer and
gyroscope of B-L475E-IOT01A2 to a Python socket server hosted on Windows10.

python visual.py

1. Start the server, modify the host name and port number if needed.
2. build the image using main.cpp in the repository, modify the configuration
   in mbed_app.json and the port number in main.cpp if needed, then the preparation is done.

1. Move the subfolder of the example project of “DISCO_L475VG_IOT01-Sensors-BSP”
   under “mbed-os-example-sockets”.
2. Modify the default port number to the port number opened on our server
   
3. Modify the host name of the “mbed_app.json”
   
4. Merge some of the code in the main.cpp of the sensor example into
   the main.cpp of the sockets. including the sensor initialization part
   and sensor value reading part
5. In the method run() of the class SocketDemo, We removed the part of sending
   HTTP request and receiving HTTP response, then We added a while(1) loop to
   implement sensor reading and sending data to the socket server.
6. For data visualization, we use matplotlib to visualize acceleration in three dimensions.
   In addition, we provide a three dimensional model to display the relative position
   of the board. Moreover, we display the three dimensions of the gyro with three charts.