This blog will show you how to install Python-CAN for the Raspberry Pi 2 for use with the PiCAN board.
Before the install use latest Raspbian Jessie, currently it is (2015-11-21) Kernel 4.1
Do an update first.
sudo apt-get update sudo apt-get upgrade sudo reboot
Add the overlays by:
sudo nano /boot/config.txt
Add these 3 lines to the end of file:
dtparam=spi=on dtoverlay=mcp2515-can0,oscillator=16000000,interrupt=25 dtoverlay=spi-bcm2835-overlay
Reboot and bring up the can0 interface:
sudo /sbin/ip link set can0 up type can bitrate 500000
Now download the Python-CAN files:
https://bitbucket.org/hardbyte/python-can/get/4085cffd2519.zip
Unzip and install by
sudo python3 setup.py install
Now start python3
python3
To sent a message out type the following lines:
import can bus = can.interface.Bus(channel='can0', bustype='socketcan_native') msg = can.Message(arbitration_id=0x7de,data=[0, 25, 0, 1, 3, 1, 4, 1]) bus.send(msg)
To received messages and display on screen type:
notifier = can.Notifier(bus, [can.Printer()])
