LabVIEW Wireless LINX

• Wireless connection for your LINX Arduino
  
• Use the standard LabVIEW LINX library
  
• Raspberry Pi provides a wireless bridge to your Arduino running LINX

Our simple python server for the Pi bridges your existing LabVIEW LINX programs to your Arduino without having to changing any code.

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How to Do It

On the Pi:
Your Pi will need to be able to execute python code, in LXTerminal run:

sudo apt-get install python-dev
sudo apt-get install python-serial

Enabling the serial port requires editing two files, cmdline and inittab:
Cmdline

sudo nano /boot/cmdline.txt

remove all references to ttyAMA0
Change
dwc_otg.lpm_enable=0 console=ttyAMA0,115200 kgdboc=ttyAMA0,115200 console=tty1 root=/dev/mmcblk0p2 rootfs elevator=deadline rootwait
To
dwc_otg.lpm_enable=0 console=tty1 root=/dev/mmcblk0p2 rootfs elevator=deadline rootwait
ctrl+x -> y -> enter, to save
Remove login prompt on serial port:
Inittab

sudo nano /etc/inittab

Change
T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100
To
#T0:23:respawn:/sbin/getty -L ttyAMA0 115200 vt100
ctrl+x -> y -> enter, to save
Reboot your Pi

sudo reboot

Hardware:
A level shifter is required for the Pi’s 3.3 V to connect with the Arduino’s 5 V supply. (More Info)

Run Your Program

Make sure the LINX server is uploaded to the target arduino.
Download our server to your Pi: LINXServer.py
Identify you Pi’s local address by typing ‘ifconfig’ in LXTerminal,
Replace HOST with that local address, adjust the PORT to your choosing
Run the server on the Pi:

sudo python LINXServer.py

Run your LINX program, making sure to use the TCP option of the LINX init, and use the right Host and Port.
bonus: turn on DEBUG to see the LINX bits being transferred.