===== The Carberry daemon =====

To simplify the interaction between Linux world and Carberry, we have developed a Linux daemon that: 

  * Starts on poweron.
  * Opens the serial port twards Carberry.
  * Exposes a TCP/IP server at port (7070) on localhost 127.0.0.1.
  * Allows multi client connection.
  * Dispatches events coming from Carberry to all clients connected.

==== Downlaod the daemon ====

Click here to [[http://www.carberry.it/down.php?download_id=709|download]] the carberry daemon, or follow installation steps below:

==== Build the daemon ====
  
Enter home directory:

  cd

Download the daemon:

  curl -O -J "https://www.carberry.it/index.php?route=download/download/download&download_id=30"
  
Untar the file:

  tar -xvf carberry_d_1.5.tar

Build the daemon

  cd carberry_d/
  gcc -o carberry carberry.c

Add execution rights to just built carberry

  sudo chmod +x carberry

Try to execute carberry:

  ./carberry

You will see something like this:

  pi@raspberrypi ~ $ ./carberry
  Carberry Started
    

Kill process with CTRL-C.

==== Install the daemon ====

Back to home directory

  cd

Create directory in /usr/local/bin

  sudo mkdir -p /usr/local/bin/carberry

Move directory to /usr/local/bin/carberry

  sudo mv carberry_d /usr/local/bin/carberry/

Move the service file in /etc/init.d

  sudo mv /usr/local/bin/carberry/carberry_d/carberry.sh /etc/init.d/carberry

Add execution rights to the service script

  sudo chmod +x /etc/init.d/carberry

Install with:

  sudo update-rc.d carberry defaults

Service operations:

  sudo service carberry stop
  sudo service carberry start
  sudo service carberry restart

Start service with:

  sudo service carberry start
  
Reboot system:

  sudo reboot

==== Check the daemon ====

Check daemon execution 

  ps aux | grep carberry

You will see:

  pi@raspberrypi ~/carberry_d $ ps aux | grep carberry
  root     29523  0.0  0.0   2576   360 ?        S    14:35   0:00 /usr/local/bin/carberry/carberry_d/carberry
  pi       29657  0.0  0.1   3568   832 pts/0    S+   14:36   0:00 grep --color=auto carberry

The daemon is correctly installed.