The wiCAN is a wireless CAN Bus adapter or a device whose basic functionality is to connect to a CAN Bus and route CAN messages via Wi-Fi and vice-versa. The module will be developed using Raspberry Pi device, an USB WI-FI module and a CAN-Bus Board for Raspberry Pi.

1. Pănuță Roman
MISS1

2.  CAN bus (for controller area network) is
a vehicle bus standard designed to
allow microcontrollers and devices to
communicate with each other within a vehicle
without a host computer. [1]
 CAN bus is a message-based protocol,
designed specifically for automotive
applications but now also used in other areas
such as aerospace, maritime, industrial
automation and medical equipment. [1]

3. [2]

4.  Wi-Fi, also spelled Wifi or WiFi, is a local area
wireless technology that allows an electronic device
to exchange data or connect to the internet using
2.4 GHz UHF and 5 GHz SHF radio waves. [1]
 Many devices can use
Wi-Fi, e.g., personal
computers, video-game
consoles, smartphones,
digital cameras, tablet
computers and digital
audio players. [1]

5. Testbench
CAN BUS
Raspberry PI
The wiCAN is a wireless CAN Bus adapter or a device whose
basic functionality is to connect to a CAN Bus and route CAN
messages via Wi-Fi and vice-versa. The module will be
developed using Raspberry Pi device, an USB WI-FI module and
a CAN-Bus Board for Raspberry Pi.

6.  The Raspberry Pi is a low cost, credit-card
sized computer that plugs into a computer
monitor or TV, and uses a standard keyboard
and mouse. [3]

7.  PiCAN board provide CAN-Bus capability for the Raspberry Pi. It uses the
Microchip MCP2515 CAN controller with MCP2551 CAN transceiver.
Connection are made via DB9 or 3 way screw terminal. [4]
 CAN v2.0B at 1 Mb/s
 High speed SPI Interface (10 MHz)
 Standard and extened data and
remote frames
 CAN connection via standard 9-way
sub-D connector or screw terminal
 Can be use with OBDII cable
 serial LCD ready
 Nylon PCB support to the Rev 2
Raspberry Pi. Gives sturdy support
 LED indicator
 Two user push buttons [4]

9. 1) Web browser request the web page;
2) wiCAN_App create the TCP server and send
web page with javascript application and TCP
server parameter;
3) Javascript application run on web browser
and connect to TCP socket and initialize with
user parameters. After data will be
transmitted.

10. Basic functions:
 Show and control signals from CAN
messages;
 Manage projects which includes the ECUs
with messages;
 Upload to a project a .dbc file with ECUs and
messages description;
 Connect to a TCP server to receive and
transmit information about users projects
and send commands to control CAN
messages on CAN-bus;

13.  User request the site;
 Server application return .html page with
javascript application and parameters for connect
to TCP server (there need to specific how the TCP
server ip and port will be transmitted: REST API
or include in html page);
 Javascript application run on web browser and
connect to TCP server;
 After connecting to TCP server server application
request user login;
 After user will login, server transmit information
about projects for this user;

14.  Project will be show on specific frame;
 After selecting one project on the workspace will
be show the windows with control or dashboard
for signal in specific messages Tx or Rx;
 After selecting a signal in message of a project
will appear a button “Create show/dashboard” for
Rx messages and “Create control” for Tx
messages;
 After press button appear a dialog where will be
setted type of dashboard/control;
 After select a dialog appear on workspace and
will be saved for project.

15.  jQuery UI is a collection
of GUI widgets, animated
visual effects,
and themes implemented
with jQuery (a JavaScriptlib
rary), Cascading Style
Sheets, and HTML. [1]
 Both jQuery and jQuery UI
are free and open-source
software distributed by the
jQuery Foundation under
the MIT License; jQuery UI
was first published in
September 2007. [1]

16. jquery.dynatree.js
 Dynatree is a jQuery plugin that allows to dynamically
create html tree view controls using JavaScript.
Main features
 Optimized for large dynamic trees (DOM elements are only
created when really needed).
 Programmable through a rich object oriented interface.
 Support for lazy loading and Ajax.
 Checkboxes and hierarchical selection.
 Supports drag and drop.
 Support for persistence.
 Keyboard aware.
 Initializes from HTML code,
JSON, or JavaScript objects.

17.  WebSocket is a protocol
providing full-
duplex communications
channels over a
single TCP connection.
The WebSocket protocol
was standardized by
the IETF as RFC6455 in
2011, and the
WebSocket API in Web
IDL is being standardized
by the W3C. [1]

18.  [1] Wikipedia - http://en.wikipedia.org/
 [2] AA1Car -
http://www.aa1car.com/library/can_systems.
htm
 [3] Raspberry Pi -
http://www.raspberrypi.org/help/what-is-a-
raspberry-pi/
 [4] PICAN CAN-Bus Board for Raspberry Pi -
http://skpang.co.uk/catalog/pican-canbus-
board-for-raspberry-pi-p-1196.html