Can Bus On Beaglebone Black Using Tja1050 Transceiver

Here you can use these cheaps adapters that you can find online

The BBB has two internal CAN-Bus controller which are called DCAN0 and DCAN1. Here, we are going to use DCAN1 because the DCAN0 interface is shared with I2C-Bus for cape-identification. DCAN1 interface is multiplexed to the connector P9 pin 24 (CAN_RX –> UART1_TXD) and 26 (CAN_TX –> UART1_RXD).

PIN	Function
P9.24	CAN_RX
P9.26	CAN_TX

Configure BeagleBone Black pins

We could assign the CAN function temporary using the config-pin utility

sudo config-pin p9.24 can
sudo config-pin p9.26 can

Enable CAN interface

CAN is implemented as a network in Linux. In other words, you can use similar utils to a common network.

sudo ip link set can1 up type can bitrate 500000
sudo ifconfig can1 up

Send and receive data

By default the Debian distro that comes with the BeagleBone has the can-utils installed.

cansend can1 123#DE.AD.BE.AF

candump can1