SK Pang Electronics PiCAN FD User manual

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

Product name PICAN FD CAN-Bus Board for Raspberry Pi 4

Model number RSP-PICAN FD DUO

Manufacturer SK Pang Electronics Ltd

PiCAN FD DUO with RTC

USER GUIDE V2.0

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

Contents

Table of Contents

1.!Introduction ............................................................................................................ 3!

1.1.!Features*................................................................................................................................................................*3!

2.!Hardware Installation .............................................................................................. 3!

1.2.!Screw*Terminals*...............................................................................................................................................*4!

1.3.!120W*Terminator*.............................................................................................................................................*4!

1.4.!LED*..........................................................................................................................................................................*4!

1.5.!Not*Fitted*Items*.................................................................................................................................................*4!

1.6.!Switch*Mode*Power*Supply*(optional)*....................................................................................................*4!

3.!Software Installation ............................................................................................... 5!

1.7.!Installing*CAN*Utils*..........................................................................................................................................*5!

1.8.!Bring*Up*the*Interface*....................................................................................................................................*5!

4.!Real Time Clock (RTC) Software Installation ............................................................. 6!

5.!Python Installation and Use ..................................................................................... 9!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

1. Introduction

This!PiCAN!FD!Duo!board!provides!two!channel!CAN-Bus!FD!capability!for!the!

Raspberry!Pi.!It!uses!the!Microchip!MCP2517FD!CAN!controller!with!MCP2562FD!

CAN!transceiver.!Connection!are!made!via!4!way!screw!terminal.!A!real!time!clock!

with!battery!back!up!(battery!not!included)!is!also!on!the!board.!

The!improved!CAN!FD!extends!the!length!of!the!data!section!to!up!to!64!bytes!per!

frame!and!a!data!rate!of!up!to!8!Mbps.!

Easy!to!install!SocketCAN!driver.!Programming!can!be!done!in!C!or!Python.!

1.1. Features

• Arbitration!Bit!Rate!upto!1Mbps!

• Data!Bit!Rate!up!to!8Mbps!

• CAN!FD!Controller!modes!

• Mixed!CAN2.0B!and!CANFD!mode!

• CAN2.0B!mode!

• Conforms!to!ISO11898-1:2015!

• High!speed!SPI!Interface!!

• CAN!connection!via!4way!screw!terminal!

• 120Ω!terminator!ready!

• Serial!LCD!ready!

• LED!indicator!

• Four!fixing!holes,!comply!with!Pi!Hat!standard!

• SocketCAN!driver,!appears!as!can0!and!can1!to!application!

• Interrupt!RX!on!GPIO25!and!05!

• RTC!with!battery!backup!(battery!not!included)!

2. Hardware Installation

Before!installing!the!board!make!sure!the!Raspberry!is!switched!off.!Carefully!align!

the!40way!connector!on!top!of!the!Pi.!Use!spacer!and!screw!(optional!items)!to!secure!

the!board.!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

1.2. Screw Terminals

The!CAN!connections!are!made!via!the!4way!screw!terminals.!

! !

!!!

Note!:!The!+12v!In!is!only!used!on!the!PiCAN2!FD!Duo!board!with!SMPS!option!fitted.!

1.3. 120

Terminator

There!is!a!120W!fitted!to!the!board.!To!use!the!terminator!solder!a!2way!header!pin!to!

JP1!and!JP2!then!insert!a!jumper.!

1.4. LED

There!is!a!red!LED!fitted!to!each!channel.!This!is!connected!to!GPIO04!and!GPIO26.!

1.5. Not Fitted Items

J2!can!be!use!to!power!a!serial!LCD!with!data!on!TXD!line!from!the!Pi.!There!is!also!5v!

supply!on!J5.!

1.6. Switch Mode Power Supply (optional)

This!is!an!optional!5v!module!that!can!power!the!Pi.!It!has!an!input!voltage!range!of!6v!

to!20v.!

J4#

Function#

CAN_L!

CAN_H!

GND!

n/c!

J3#

Function#

CAN_L!

CAN_H!

GND!

+12v!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

3. Software Installation

It!is!best!to!start!with!a!brand!new!Raspbian!image.!Download!the!latest!from:!

https://www.raspberrypi.org/downloads/raspbian/!

After!first!time!boot!up,!do!an!update!and!upgrade!first.!

sudo apt-get update

sudo apt-get upgrade

sudo reboot

Add!the!overlays!by:!

sudo nano /boot/config.txt

Add!these!lines!to!the!end!of!file:!

dtparam=spi=on

dtoverlay=i2c-rtc,pcf8523

dtoverlay=mcp251xfd,spi0-0,interrupt=25

dtoverlay=mcp251xfd,spi0-1,interrupt=05

Reboot!Pi:!

sudo reboot

1.7. Installing CAN Utils

Install!the!CAN!utils!by:!

sudo apt-get install can-utils

1.8. Bring Up the Interface

You!can!now!bring!the!CAN!interface!up!with!CAN!2.0B!at!500kbps:!

sudo /sbin/ip link set can0 up type can bitrate 500000

or!CAN!FD!at!500kpbs!/!2Mbps.!Use!copy!and!paste!to!a!terminal.!

sudo /sbin/ip link set can0 up type can bitrate 500000 dbitrate 2000000 fd on sample-point .8 dsample-point .8

Connect!the!PiCAN2!to!your!CAN!network!via!screw!terminal!or!DB9.!

To!send!a!CAN!2.0!message!use!:!

cansend can0 7DF#0201050000000000

This!will!send!a!CAN!ID!of!7DF.!Data!02!01!05!–!coolant!temperature!request.!

To!send!a!CAN!FD!message!with!BRS!use!:!

cansend can0 7df##15555555555555555

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

To!send!a!CAN!FD!message!with!no!BRS!use!:!

cansend can0 7df##05555555555555555

Connect!the!PiCAN!to!a!CAN-bus!network!and!monitor!traffic!by!using!command:!

candump can0

You!should!see!something!like!this:

To!use!the!other!CAN!channel!replace!can0!with!can1.!

4. Real Time Clock (RTC) Software Installation

Insert!a!CR1220!battery!(not!supplied)!into!battery!holder.!Ensure!the!“+”!is!facing!

upward.!

Install!the!i2c-tools!by:!

sudo apt-get install i2c-tools

Then!check!the!RTC:!

sudo i2cdetect -y 1

You!should!see!68!or!UU!on!address!0x68:!

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

Now!you!need!to!disable!the!"fake!hwclock"!which!interferes!with!the!'real'!hwclock!

sudo apt-get -y remove fake-hwclock

sudo update-rc.d -f fake-hwclock remove

Start!the!original!hw!clock!script!by:!

sudo nano /lib/udev/hwclock-set

and!comment!out!these!three!lines:!

#if [ -e /run/systemd/system ] ; then

# exit 0

#fi

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

Reboot!the!Pi.!

Type!the!following!to!stop!the!fake!clock!services.!

sudo systemctl stop fake-hwclock.service

sudo systemctl disable fake-hwclock.service

Ensure!the!Ethernet!cable!or!Wifi!is!on.!This!will!get!the!time!from!the!network.!!

Set!the!clock!by:!

sudo hwclock -w

To!read!the!clock:!

sudo hwclock -r

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

5. Python Installation and Use

Ensure!the!driver!for!PiCAN!FD!is!installed!and!working!correctly!first.!

Clone!the!pythonCan!repository!by:!

git clone https://github.com/hardbyte/python-can

cd python-can

sudo python3 setup.py install

Check!there!is!no!error!been!displayed.!

Bring!up!the!can0!interface:!

sudo /sbin/ip link set can0 up type can bitrate 500000 dbitrate 2000000 fd on sample-point .8 dsample-point .8

Now!start!python3!and!try!the!transmit!with!CAN!FD!and!BRS!set.!

python3

import can

bus = can.interface.Bus(channel='can0', bustype='socketcan_native',fd =

True)

msg = can.Message(arbitration_id=0x7de,extended_id=False,is_fd = True,

bitrate_switch = True,data=[0,0,0,0,0,0x1e,0x21,0xfe, 0x80, 0, 0,1,0])

bus.send(msg)!

To!received!messages!and!display!on!screen!type!in:!

notifier = can.Notifier(bus, [can.Printer()])

!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!PiCAN FD DUO Rev B 2.0

SK Pang Electronics Ltd Ó 2021

www.skpang.co.uk

Documentation!for!python-can!can!be!found!at!:!!

https://python-can.readthedocs.io/en/stable/index.html!

More!expamles!in!github:!

https://github.com/skpang/PiCAN-FD-Python-examples!

Other manuals for PiCAN FD

Table of contents

Other SK Pang Electronics Computer Hardware manuals

SK Pang Electronics

SK Pang Electronics RSP-PICANFDLIN User manual

SK Pang Electronics

SK Pang Electronics RSP-PICANFD-NEO-M8M User manual

SK Pang Electronics

SK Pang Electronics PiCAN2 DUO SMPS User manual

SK Pang Electronics

SK Pang Electronics PiCAN FD User manual

SK Pang Electronics

SK Pang Electronics RSP-PICAN FD DUO ISO User manual

SK Pang Electronics

SK Pang Electronics PiCAN-M User manual

SK Pang Electronics

SK Pang Electronics RSP-PICANGPS User manual

SK Pang Electronics

SK Pang Electronics RSP-PICAN FD User manual

Popular Computer Hardware manuals by other brands

EMC2

EMC2 VNX Series Hardware Information Guide

Panasonic

Panasonic DV0PM20105 Operation manual

Mitsubishi Electric

Mitsubishi Electric Q81BD-J61BT11 user manual

Gigabyte

Gigabyte B660M DS3H AX DDR4 user manual

Raidon

Raidon iT2300 Quick installation guide

National Instruments

National Instruments PXI-8186 user manual

Hauppauge

Hauppauge WinTV-HVR-2250 Quick installation guide

Kontron

Kontron CP6002 user guide

Manhattan

Manhattan 702843 user manual

Aphex

Aphex 230 instruction manual

AMD

AMD Phenom II Product data sheet

Intel

Intel NUC 12 Pro user guide

dbx

dbx Zone Pro 1260 user manual

Galaxy

Galaxy GHDX2-2430S-24F4D Installation and hardware reference manual

Intel

Intel AXXRMFBU4 Quick installation user's guide

Kontron

Kontron DIMM-PC/MD product manual

ST X-NUCLEO-SAFEA1B How to use

STEINWAY LYNGDORF

STEINWAY LYNGDORF SP-1 installation manual