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12 How to manage interfaces in Linux
12.7
How to manage the CAN ports
The ReliaGATE 10-12 exposes the CAN ports as follows:
CAN 0 port:
l
CAN 1 port:
l
CAN ports are added through the SocketCAN kernel extension.
For more information on SocketCAN refer to the Linux kernel documentation:
www.kernel.org/doc/Documentation/networking/can.txt
12.7.1
How to enable the CAN Bus 5V
To enable can0 5V, enter the following command:
gpio_utility gpio8 1
To enable can1 5V, enter the following command:
gpio_utility gpio9 1
12.7.2
How to setup a CAN port
To setup a CAN port, enter the following commands:
#Set CAN0 to work at 125 kbps
ip link set can0 type can bitrate 125000
#Open the connection
ip link set up can0
12.7.3
How to send/receive a message via a CAN port
Example: Sending / receiving a message via a CAN port (once the CAN port has been setup)
#Send a byte via CAN0
cansend can0 255
#Example of received message on can0
root@productname...:~# candump can0
interface = can0, family = 29, type = 3, proto = 1
<0x001> [1] 01
<0x001> [1] 02
<0x001> [1] 05
<0x001> [1] 00
<0x001> [1] ff
12.8
How the TTL Serial Console is exposed
The ReliaGATE 10-12 exposes the Console as follows:
Console
l
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can0
can1
/dev/ttyS0 (available in the Service Panel)
ReliaGATE 10-12 User manual Rev. 2-1
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