Selects the device as the target you want to communicate with,
Only one device can be selected at a time and WebbotLib will make sure that when one device is selected that all other devices on the same SPI bus are de-selected first.
All of the calls that send, receive or transfer data will automatically call this function to select the device.
Where SpiDevice is the name you have given to the device in Project Designer.
TRUE to select the device or FALSE to un-select.