Joy-it CAN MODULE User manual

3
CAN Module
with MCP2515 CAN Interface & MCP 2562 Transceiver

Published: 30.10.2018 Copyright by Joy-IT 2
CAN Module
1. Overview
2. Details
3. Usage with an Arduino
4. Usage with a Raspberry Pi
5. Informaon and take-back obligaons
7. Support
TABLE OF CONTENTS

Published: 30.10.2018 Copyright by Joy-IT 3
CAN Module
Dear customer,
Thank you for choosing our product.
In the following we will show you what has to be considered during commissioning and use. Should you
encounter any unexpected problems, please feel free to contact us.
The CAN board is compable with Raspberry Pis (and other ARM single board computers) on a voltage
level of 3.3V, as well as with Arduinos on a voltage level of 5V. A general pin assignment can be found in
the following diagram and table. A detailed connecon overview and instrucons for use in combinaon
with the dierent systems can be found in the following chapters.
1. OVERVIEW
2. ANSCHLUSSPLAN

Published: 30.10.2018 Copyright by Joy-IT 4
CAN Module
For best operaon between CAN High and CAN Low, a terminal resistor is required.
A 120Ω resistor at each bus end is opmal for a maximum range over longer distances. This is already
integrated in our module and can be acvated or deacvated at connecon P1.
Connection Description
NT Interrupt
SCK Serial Clock
SI MOSI
S0 MISO
CS Chip Select
GND Ground
VCC1 5V
VCC 3.3V
P2 Addional connecon of CANH and CANL signals
P1 Acvaon / deacvaon of the
terminal resistor
CANH CAN High
CANL CAN Low

Published: 30.10.2018 Copyright by Joy-IT 5
CAN Module
For use with an Arduino, we recommend using the MCP2515 library.
This is available on the Github plaorm and can be downloaded there. Simply copy the library folder into
your Arduino library. This is usually located at : "C:\[your username]\Documents\Arduino\libraries".
Among the examples of this library you can nd an example for a transmier as well as for a receiver.
With these examples the basic funconality of the system can be explored excellently. With a second
Arduino and a second Can module, for example, a communicaon between both devices can be
established, where one module takes over the transmier and the other module the receiver. In this case,
connect both CAN-High interfaces and both CAN-Low interfaces of the two modules with each other.
3. USAGE WITH AN ARDUINO
CAN Module Arduino
NT D2
SCK D13
SI D11
S0 D12
CS D10
GND GND
VCC1 5V
VCC 5V

Published: 30.10.2018 Copyright by Joy-IT 6
CAN Module
Aenon! Please make sure to connect the VCC1 and VCC connectors correctly. The module works with a
voltage level of 5V, but in contrast to an Arduino, the inputs and outputs of the Raspberry Pis are only
designed for a voltage of 3.3V. For this reason, our module has two voltage inputs (VCC1 and VCC). This
allows you to use the module on your Raspberry Pi without hesitaon and without permanently damaging
it.
4. USAGE WITH A RASPBERRY PI
CAN Module Raspberry Pi
NT 22 (GPIO 25)
SCK 23 (SCK)
SI 19 (MOSI)
S0 21 (MISO)
CS 24 (CE0)
GND 6 (GND)
VCC1 2 (5V)
VCC 1 (3.3V)

Published: 30.10.2018 Copyright by Joy-IT 7
CAN Module
To install the necessary extensions and to be able to use the CAN module with a Raspberry Pi, please
update the package lists rst and install the extension can-uls:
Next, use the following command to get the kernel version of your Raspberry pis. This is necessary for the
further conguraon of the system.
You will be shown the current kernel version (e.g. "4.4.41-v7").
Next, open and edit the cong.txt le with the following command:
If your kernel version is 4.4.x or newer, please add the following lines to the end of the le:
However, if your Raspberry Pi runs with an older kernel version, please add the following lines to the end
of the le instead:
Save the le with the key combinaon CTRL+O, conrm the saving process with Enter, and exit the editor
with the combinaon CTRL+X.
Restart your Raspberry Pi with the following command:
sudo apt-get update
sudo apt-get upgrade
sudo apt-get install can-utils
uname -a
sudo nano /boot/config.txt
dtparam=spi=on
dtoverlay=mcp2515-can0,oscillator=8000000,interrupt=25
dtoverlay=sp1-1cs
dtparam=spi=on
dtoverlay=mcp2515-can0,oscillator=8000000,interrupt=25
dtoverlay=sp1-bcm2835-overlay
sudo reboot

Published: 30.10.2018 Copyright by Joy-IT 8
CAN Module
Aer the restart has been completed, you can now start the CAN interface:
The system should now be ready. You can now start a rst send aempt with the following command:
Instead of aempng to send, you can also start receiving:
For example, in order to gain inial experience with the module, two Raspberry Pis and two CAN modules
can be used to iniate communicaon between the two devices.
In this case, make sure that you also connect the CAN high pins of both modules as well as both CAN low
pins.
sudo ip link set can0 up type can bitrate 500000
cansend can0 127#DEADBEEF
candump can0

Published: 30.10.2018 Copyright by Joy-IT 9
CAN Module
Symbol on electrical and electronic equipment
This crossed-out dustbin means that electrical and electronic appliances do not belong in the household
waste. You must return the old appliances to a collecon point. Before handing over waste baeries and
accumulators that are not enclosed by waste equipment must be separated from it.
Return opons
As an end user, you can return your old appliance (which essenally fulls the same funcon as the new
appliance purchased from us) free of charge for disposal when you purchase a new appliance. Small
appliances with no external dimensions greater than 25 cm can be disposed of in normal household
quanes independently of the purchase of a new appliance.
Possibility of return at our company locaon during opening hours
Simac GmbH, Pascalstr. 8, D-47506 Neukirchen-Vluyn
Possibility of return near you
We will send you a parcel stamp with which you can return the device to us free of charge. Please contact
us by e-mail at [e-mail] or by telephone.
Informaon on packaging
If you do not have suitable packaging material or do not wish to use your own, please contact us and we
will send you suitable packaging.
5. INFORMATION AND TAKE-BACK OBLIGATIONS

Published: 30.10.2018 Copyright by Joy-IT 10
CAN Module
We are also there for you aer your purchase. If you sll have quesons or problems, we are also
available by e-mail, telephone and cket support system.
E-Mail: [e-mail]
Ticket-System: hp://support.joy-it.net
Phone: [phone] – 66 (9:30 - 17:00 o‘clock)
For further informaon please visit our website:
www.joy-it.net
6. SUPPORT